Pub Date : 2024-06-28DOI: 10.3389/fsufs.2024.1366878
Ee Von Goh, Nafiisa Sobratee-Fajurally, Antonio Allegretti, Mallika Sardeshpande, Maysoun Mustafa, Susan Helen Azam-Ali, Rose Omari, Johanna Schott, Vimbayi Grace Petrova Chimonyo, Daniela Weible, George Mutalemwa, Tafadzwanashe Mabhaudhi, Festo Massawe
Food environments are rapidly changing globally, both in developed and developing contexts, contributing to poor dietary habits and environmental concerns. As a result, more than 80% of countries in the world face different forms of malnutrition, while the environment faces further degradation due to unsustainable production and consumption patterns. Understanding food environments in diverse settings via a global lens is critical for facilitating the global transition to sustainable and healthy food environments. A virtual workshop was held with stakeholders from five nations (Germany, Ghana, Malaysia, South Africa, and Tanzania) representing varying levels of development to interrogate global food environment concerns and propose cross cutting thematic areas that may be explored and addressed through policy change and intervention. The workshop initiated a transdisciplinary project to shape food environments for sustainable and healthy diets. The Reference Manual for Convenors of Food Systems Summit Dialogues for United Nations Food Systems Summit (UNFSS) (United Nations, 2020) was used as guidance to ensure that an inclusive mix of stakeholders were invited. The stakeholders included key players from public and private sectors in disciplines of agriculture, agro-forestry, environment and ecology, education, food retail and market, trade and commerce, health care and nutrition. Following the workshop discussion, the findings were analyzed using a general inductive approach. Through triangulation of findings, we identified the common challenges and opportunities for achieving collective nutritional, social and environmental sustainability in the modern food environments, which have become more universal globally. It is evident that research and data are essential for sustainable development of food systems, while Sustainable Development Goal (SDG) 17 - Partnership for the Goals - should be placed at the core of the transformative process. We proposed several research-driven transdisciplinary interventions to facilitate a paradigm shift from the profit logic model over everything else, and to counter the existing policy fragmentation and systemic challenges to making food environments nutrition-sensitive and socially and environmentally sustainable.
{"title":"Transforming food environments: a global lens on challenges and opportunities for achieving healthy and sustainable diets for all.","authors":"Ee Von Goh, Nafiisa Sobratee-Fajurally, Antonio Allegretti, Mallika Sardeshpande, Maysoun Mustafa, Susan Helen Azam-Ali, Rose Omari, Johanna Schott, Vimbayi Grace Petrova Chimonyo, Daniela Weible, George Mutalemwa, Tafadzwanashe Mabhaudhi, Festo Massawe","doi":"10.3389/fsufs.2024.1366878","DOIUrl":"10.3389/fsufs.2024.1366878","url":null,"abstract":"<p><p>Food environments are rapidly changing globally, both in developed and developing contexts, contributing to poor dietary habits and environmental concerns. As a result, more than 80% of countries in the world face different forms of malnutrition, while the environment faces further degradation due to unsustainable production and consumption patterns. Understanding food environments in diverse settings via a global lens is critical for facilitating the global transition to sustainable and healthy food environments. A virtual workshop was held with stakeholders from five nations (Germany, Ghana, Malaysia, South Africa, and Tanzania) representing varying levels of development to interrogate global food environment concerns and propose cross cutting thematic areas that may be explored and addressed through policy change and intervention. The workshop initiated a transdisciplinary project to shape food environments for sustainable and healthy diets. The Reference Manual for Convenors of Food Systems Summit Dialogues for United Nations Food Systems Summit (UNFSS) (United Nations, 2020) was used as guidance to ensure that an inclusive mix of stakeholders were invited. The stakeholders included key players from public and private sectors in disciplines of agriculture, agro-forestry, environment and ecology, education, food retail and market, trade and commerce, health care and nutrition. Following the workshop discussion, the findings were analyzed using a general inductive approach. Through triangulation of findings, we identified the common challenges and opportunities for achieving collective nutritional, social and environmental sustainability in the modern food environments, which have become more universal globally. It is evident that research and data are essential for sustainable development of food systems, while Sustainable Development Goal (SDG) 17 - Partnership for the Goals - should be placed at the core of the transformative process. We proposed several research-driven transdisciplinary interventions to facilitate a paradigm shift from the profit logic model over everything else, and to counter the existing policy fragmentation and systemic challenges to making food environments nutrition-sensitive and socially and environmentally sustainable.</p>","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"8 ","pages":"1366878"},"PeriodicalIF":3.7,"publicationDate":"2024-06-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7617158/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142802562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1297858
Beatrice Jasso, Luisa Quinchia, T. M. Waliczek, M. Drewery
One of the byproducts from rearing Black soldier fly larvae (BSFL) is its excrement, referred to as frass, and sheddings. As the commercial insect rearing industry is emerging in the U.S., there is not yet an established market for frass although the yield often exceeds that of BSFL by two- to three-fold. It has been suggested that frass could be converted into compost; however, there is a lack of literature investigating the effect of frass and larval sheddings inclusion on final compost quality. Accordingly, the objective of this study was to determine if BSFL frass and sheddings are a viable compost ingredient with the overarching purpose of identifying a potential market for an otherwise waste product of the insect-rearing industry. To address this objective, four experimental compost piles (6.12 m3 each) with increasing levels of BSFL frass and sheddings (18.75, 22.87, 27.13, 31.25%) were developed. Across piles, wood chips (37.50%) and unscreened compost (18.75%) were consistent and frass and sheddings displaced food waste. Piles were mixed and tested for moisture and temperature weekly. Once internal temperatures decreased to 38°C, piles cured until internal temperatures were consistently <32°C. After curing, samples were collected from each pile and analyzed for pH, macro- and micro-nutrients, particle size, stability, and maturity. The entire composting process, including 2 months of curing, required 5 months. For each pile, pH, nitrogen, carbon, carbon:nitrogen, and potassium were within optimal ranges. Further, stability, measured as mg CO2-C/g solids/day, and maturity, measured as seed emergence and seedling vigor, were also within optimal ranges. However, moisture/solids; organic matter; phosphorus; and stability, measured as mg CO2-C/g organic matter/day, were out-of-specification for each pile given compost quality tests. Our findings indicate BSFL frass and sheddings may be a viable compost ingredient, but further research is recommended to establish optimal inclusion levels to maximize finished compost quality.
{"title":"Black soldier fly larvae (Hermetia illucens) frass and sheddings as a compost ingredient","authors":"Beatrice Jasso, Luisa Quinchia, T. M. Waliczek, M. Drewery","doi":"10.3389/fsufs.2023.1297858","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1297858","url":null,"abstract":"One of the byproducts from rearing Black soldier fly larvae (BSFL) is its excrement, referred to as frass, and sheddings. As the commercial insect rearing industry is emerging in the U.S., there is not yet an established market for frass although the yield often exceeds that of BSFL by two- to three-fold. It has been suggested that frass could be converted into compost; however, there is a lack of literature investigating the effect of frass and larval sheddings inclusion on final compost quality. Accordingly, the objective of this study was to determine if BSFL frass and sheddings are a viable compost ingredient with the overarching purpose of identifying a potential market for an otherwise waste product of the insect-rearing industry. To address this objective, four experimental compost piles (6.12 m3 each) with increasing levels of BSFL frass and sheddings (18.75, 22.87, 27.13, 31.25%) were developed. Across piles, wood chips (37.50%) and unscreened compost (18.75%) were consistent and frass and sheddings displaced food waste. Piles were mixed and tested for moisture and temperature weekly. Once internal temperatures decreased to 38°C, piles cured until internal temperatures were consistently <32°C. After curing, samples were collected from each pile and analyzed for pH, macro- and micro-nutrients, particle size, stability, and maturity. The entire composting process, including 2 months of curing, required 5 months. For each pile, pH, nitrogen, carbon, carbon:nitrogen, and potassium were within optimal ranges. Further, stability, measured as mg CO2-C/g solids/day, and maturity, measured as seed emergence and seedling vigor, were also within optimal ranges. However, moisture/solids; organic matter; phosphorus; and stability, measured as mg CO2-C/g organic matter/day, were out-of-specification for each pile given compost quality tests. Our findings indicate BSFL frass and sheddings may be a viable compost ingredient, but further research is recommended to establish optimal inclusion levels to maximize finished compost quality.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"32 7","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139383006","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1306525
Sarah M. Collier, Alan Ismach, Victoria Jansen, Aba Kiser, Holly Henning, Laura R. Lewis, Marie L. Spiker, Jennifer J. Otten
A well-trained food systems workforce is in high demand, and food systems education programs are proliferating in higher education. However, these programs often struggle to embody the full interdisciplinary scope of the field of food systems, in part due to the limitations of traditional academic structures. Here, we present an inventory of existing U.S. food systems educational programs which showcases the breadth of their geographic distribution and disciplinary contexts. We pair this with a case study of two geographically proximal, highly complementary programs, one at a land grant university and one within a school of public health. While the individual programs face challenges in achieving full interdisciplinarity, their pairing showcases that striking opportunities exist to augment interdisciplinarity through inter-institutional collaboration. More models of successful inter-institutional collaborative food systems education are needed. Growth in this area would be aided by external funding for proof-of-concept models, fostering learning networks across disciplinarily distinct programs, and fighting the mission creep of individual programs striving to “do it all” at the expense of quality, stability, or an appreciation for the value of diverse core strengths.
{"title":"A call for collaboration among food systems programs in higher education to train the future workforce","authors":"Sarah M. Collier, Alan Ismach, Victoria Jansen, Aba Kiser, Holly Henning, Laura R. Lewis, Marie L. Spiker, Jennifer J. Otten","doi":"10.3389/fsufs.2023.1306525","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1306525","url":null,"abstract":"A well-trained food systems workforce is in high demand, and food systems education programs are proliferating in higher education. However, these programs often struggle to embody the full interdisciplinary scope of the field of food systems, in part due to the limitations of traditional academic structures. Here, we present an inventory of existing U.S. food systems educational programs which showcases the breadth of their geographic distribution and disciplinary contexts. We pair this with a case study of two geographically proximal, highly complementary programs, one at a land grant university and one within a school of public health. While the individual programs face challenges in achieving full interdisciplinarity, their pairing showcases that striking opportunities exist to augment interdisciplinarity through inter-institutional collaboration. More models of successful inter-institutional collaborative food systems education are needed. Growth in this area would be aided by external funding for proof-of-concept models, fostering learning networks across disciplinarily distinct programs, and fighting the mission creep of individual programs striving to “do it all” at the expense of quality, stability, or an appreciation for the value of diverse core strengths.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"20 5","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139383186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1306521
Andrea N. Hanke, Amanda Niptanatiak Dumond, J. Di Francesco, Cindy Adams, Terry Milton, L. Leclerc, Beverly Maksagak, Rosemin Nathoo, Amélie Roberto-Charron, Gwendolyn Blue, Susan Kutz
Climate change is increasing vulnerability to food insecurity and biodiversity loss for many Indigenous Peoples globally. For Inuit, food sovereignty is one expression of Indigenous self-determination, and it includes the right of all Inuit to define their own conservation policies. Caribou conservation is particularly pertinent because of the central role caribou play in Inuit food systems. The “Dolphin and Union” (DU) caribou herd is a critical component of Inuit food systems in the Canadian Arctic and has declined by 89% in 2020 (3,815) from the peak measured by aerial survey in 1997 (34,558).Our first objective was to identify insights about this herd from and with Inuit Qaujimajatuqangit (knowledge). Using thematic analysis, we created a collective account on the DU caribou herd through a research partnership among Indigenous knowledge keepers, government, and academia. Our second objective was to put our findings into the broader literature on the DU caribou herd and connect isolated data on their abundance and distribution.We found understanding Inuit knowledge of caribou meant situating harvesters’ knowledge within their family history, harvesting methods, conservation ethics, and in relation to other harvesters. Through this framework, we conceptualized Inuit-described metrics of caribou status, resulting in three sub-themes of caribou trends over time – their abundance, distribution, and health, − and ending with conservation concerns and potential actions. The synthesized data indicated that the overall population size increased since ~1990s and then decreased after ~2000s alongside a range contraction. Our results add value to co-management literature by (1) articulating Inuit-described metrics of a population decline that inform continued monitoring and incorporation of these metrics into management planning and (2) synthesizing data from various studies on the DU caribou herd abundance and distribution that assists management to make informed conservation decisions based on Inuit and Western knowledge.Results from this research contribute to understanding the six dimensions of environmental health, i.e., availability, stability, accessibility, health and wellness, Inuit culture, and decision-making power and management relating to caribou. The results contribute information that is used by to support environmental health, i.e., knowledge systems, policy, and co-management relating to caribou. Thus, this collaborative research study supports the expression of Inuit food sovereignty through caribou conservation.
气候变化加剧了全球许多土著人民粮食不安全和生物多样性丧失的脆弱性。对因纽特人来说，粮食主权是土著自决的一种表现形式，它包括所有因纽特人制定自己的保护政策的权利。由于驯鹿在因纽特人的食物体系中发挥着核心作用，因此驯鹿保护尤为重要。海豚与联盟"（DU）驯鹿群是加拿大北极地区因纽特人食物系统的重要组成部分，与 1997 年航空调查测量的峰值（34,558 头）相比，2020 年已减少 89%（3,815 头）。利用主题分析法，我们通过土著知识保存者、政府和学术界之间的研究合作，创建了关于 DU 驯鹿群的集体描述。我们发现，了解因纽特人对驯鹿的知识意味着将捕猎者的知识置于其家族历史、捕猎方法、保护伦理以及与其他捕猎者的关系之中。通过这一框架，我们将因纽特人描述的驯鹿状况指标概念化，形成了驯鹿随时间变化趋势的三个次主题--其数量、分布和健康状况，最后是保护问题和潜在行动。综合数据表明，自 ~1990 年代以来，驯鹿的总体数量有所增加，但在 ~2000 年代之后，随着分布范围的缩小，数量有所减少。我们的研究结果为共同管理文献增添了价值：(1) 阐明了因纽特人描述的种群数量下降指标，为持续监测和将这些指标纳入管理规划提供了依据；(2) 综合了有关 DU 驯鹿群数量和分布的各种研究数据，有助于管理部门根据因纽特人和西方知识做出明智的保护决策。研究结果提供的信息可用于支持环境健康，即与驯鹿有关的知识体系、政策和共同管理。因此，这项合作研究有助于通过驯鹿保护体现因纽特人的食物主权。
{"title":"Supporting Inuit food sovereignty through collaborative research of an at-risk caribou herd","authors":"Andrea N. Hanke, Amanda Niptanatiak Dumond, J. Di Francesco, Cindy Adams, Terry Milton, L. Leclerc, Beverly Maksagak, Rosemin Nathoo, Amélie Roberto-Charron, Gwendolyn Blue, Susan Kutz","doi":"10.3389/fsufs.2023.1306521","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1306521","url":null,"abstract":"Climate change is increasing vulnerability to food insecurity and biodiversity loss for many Indigenous Peoples globally. For Inuit, food sovereignty is one expression of Indigenous self-determination, and it includes the right of all Inuit to define their own conservation policies. Caribou conservation is particularly pertinent because of the central role caribou play in Inuit food systems. The “Dolphin and Union” (DU) caribou herd is a critical component of Inuit food systems in the Canadian Arctic and has declined by 89% in 2020 (3,815) from the peak measured by aerial survey in 1997 (34,558).Our first objective was to identify insights about this herd from and with Inuit Qaujimajatuqangit (knowledge). Using thematic analysis, we created a collective account on the DU caribou herd through a research partnership among Indigenous knowledge keepers, government, and academia. Our second objective was to put our findings into the broader literature on the DU caribou herd and connect isolated data on their abundance and distribution.We found understanding Inuit knowledge of caribou meant situating harvesters’ knowledge within their family history, harvesting methods, conservation ethics, and in relation to other harvesters. Through this framework, we conceptualized Inuit-described metrics of caribou status, resulting in three sub-themes of caribou trends over time – their abundance, distribution, and health, − and ending with conservation concerns and potential actions. The synthesized data indicated that the overall population size increased since ~1990s and then decreased after ~2000s alongside a range contraction. Our results add value to co-management literature by (1) articulating Inuit-described metrics of a population decline that inform continued monitoring and incorporation of these metrics into management planning and (2) synthesizing data from various studies on the DU caribou herd abundance and distribution that assists management to make informed conservation decisions based on Inuit and Western knowledge.Results from this research contribute to understanding the six dimensions of environmental health, i.e., availability, stability, accessibility, health and wellness, Inuit culture, and decision-making power and management relating to caribou. The results contribute information that is used by to support environmental health, i.e., knowledge systems, policy, and co-management relating to caribou. Thus, this collaborative research study supports the expression of Inuit food sovereignty through caribou conservation.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"20 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139382838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1271811
Abrham Kassa Ejigu, Kumelachew Yeshitela
This study assesses the factors influencing urban farmers’ intentions to adopt excreta-based organic fertilizers in Arba Minch City, Ethiopia, to address the pressing global resource use challenge, particularly the linear system of organic nutrient use and the practice of closing the nutrient loop. To do this, the study applies the Combined Model of Theory of Planned Behavior and Technology Acceptance Model (C-TPB-TAM) to examine the links between attitude, subjective norm, perceived behavioral control, perceived usefulness, perceived ease of use, and farmers’ intentions. Surveys that were given to a sample of urban farmers in Arba Minch City were used to get the data. The results shed light on the factors that influence farmers’ decisions to use organic fertilizers and offer useful information for resolving the problem of resource use in the context of urban agriculture. The findings specifically show how attitudes, perceived behavioral control, perceived usefulness, and perceived ease of use significantly affect farmers’ intentions. However, it was discovered that the subjective norm did not significantly affect the farmer’s intention. These results highlight how critical it is to address farmers’ attitudes, perceived behavioral control, perceived usefulness, and perceived ease of use to encourage the adoption of sustainable farming methods and close the nutrient loop. Farmers can help mitigate the negative environmental effects of the linear nutrient system and speed up the transition to a more resource- and sustainably efficient agriculture system by implementing organic fertilizers. This study not only adds to the body of knowledge but also has applications for practitioners and policymakers who want to encourage the use of organic fertilizers. To better understand the adoption of organic fertilizer in various locations and nations, future research projects should think about extending the geographical reach and examining real adoption behavior. We can encourage sustainable agricultural practices and work toward a more resource-oriented and resilient future by building on these lessons.
{"title":"Exploring the factors influencing urban farmers’ perception and attitude toward the use of excreta-based organic fertilizers in Arba Minch City, Ethiopia","authors":"Abrham Kassa Ejigu, Kumelachew Yeshitela","doi":"10.3389/fsufs.2023.1271811","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1271811","url":null,"abstract":"This study assesses the factors influencing urban farmers’ intentions to adopt excreta-based organic fertilizers in Arba Minch City, Ethiopia, to address the pressing global resource use challenge, particularly the linear system of organic nutrient use and the practice of closing the nutrient loop. To do this, the study applies the Combined Model of Theory of Planned Behavior and Technology Acceptance Model (C-TPB-TAM) to examine the links between attitude, subjective norm, perceived behavioral control, perceived usefulness, perceived ease of use, and farmers’ intentions. Surveys that were given to a sample of urban farmers in Arba Minch City were used to get the data. The results shed light on the factors that influence farmers’ decisions to use organic fertilizers and offer useful information for resolving the problem of resource use in the context of urban agriculture. The findings specifically show how attitudes, perceived behavioral control, perceived usefulness, and perceived ease of use significantly affect farmers’ intentions. However, it was discovered that the subjective norm did not significantly affect the farmer’s intention. These results highlight how critical it is to address farmers’ attitudes, perceived behavioral control, perceived usefulness, and perceived ease of use to encourage the adoption of sustainable farming methods and close the nutrient loop. Farmers can help mitigate the negative environmental effects of the linear nutrient system and speed up the transition to a more resource- and sustainably efficient agriculture system by implementing organic fertilizers. This study not only adds to the body of knowledge but also has applications for practitioners and policymakers who want to encourage the use of organic fertilizers. To better understand the adoption of organic fertilizer in various locations and nations, future research projects should think about extending the geographical reach and examining real adoption behavior. We can encourage sustainable agricultural practices and work toward a more resource-oriented and resilient future by building on these lessons.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"72 3","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139383662","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The life cycles of plants are characterized by significant alternations between the diploid sporophytic and the haploid gametophytic generations. Meiosis and fertilization are the prerequisites for achieving the alternation of generations. Diploid sporophytes undergo meiosis to produce haploid gametes, and male–female gametes fuse (double fertilization) to revert to the diploid sporophyte. The formation and development of male gametophytes are crucial for the alternation of generations in higher plants. During the long evolution of plants from aquatic to terrestrial, the way of sexual reproduction has undergone subversive innovations. From sperm swimming for fertilization to relying on the precise delivery of pollen tubes to female gametes for the fusion of the male–female gametes, higher requirements are placed on the male gametophytes’ development and fertilization process. The formation of male gametophytes has undergone significant changes to meet the needs for delivery and transportation of the male gametes. With the emergence of more and more evidence, the molecular mechanism underlying male gametophytes’ development, especially the initiation and specialization of germline cells has been better understood. Focusing on the latest studies, we reviewed and elucidated the critical proteins and factors involved in male gametophyte formation, highlighting the decisive role of auxin in archesporial cell specialization and the importance of microspore maturation in pre-mitosis, and analyzed the molecular mechanisms underlying male gametogenesis, with a view to providing insights for further exploration of male gametophytes formation in the future.
{"title":"Male gametogenesis in flowering plants","authors":"Dan-Lu Cui, Chun-Xia Xu, Ping Wang, Tianjun Gao, Bo Wang, Tian-Ying Yu","doi":"10.3389/fsufs.2023.1333544","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1333544","url":null,"abstract":"The life cycles of plants are characterized by significant alternations between the diploid sporophytic and the haploid gametophytic generations. Meiosis and fertilization are the prerequisites for achieving the alternation of generations. Diploid sporophytes undergo meiosis to produce haploid gametes, and male–female gametes fuse (double fertilization) to revert to the diploid sporophyte. The formation and development of male gametophytes are crucial for the alternation of generations in higher plants. During the long evolution of plants from aquatic to terrestrial, the way of sexual reproduction has undergone subversive innovations. From sperm swimming for fertilization to relying on the precise delivery of pollen tubes to female gametes for the fusion of the male–female gametes, higher requirements are placed on the male gametophytes’ development and fertilization process. The formation of male gametophytes has undergone significant changes to meet the needs for delivery and transportation of the male gametes. With the emergence of more and more evidence, the molecular mechanism underlying male gametophytes’ development, especially the initiation and specialization of germline cells has been better understood. Focusing on the latest studies, we reviewed and elucidated the critical proteins and factors involved in male gametophyte formation, highlighting the decisive role of auxin in archesporial cell specialization and the importance of microspore maturation in pre-mitosis, and analyzed the molecular mechanisms underlying male gametogenesis, with a view to providing insights for further exploration of male gametophytes formation in the future.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"45 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139384160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1281496
Nilson Aparecido Vieira Junior, Ana J. P. Carcedo, Doohong Min, A. Diatta, Alemie Araya, P. V. V. Prasad, Amadiane Diallo, Ignacio Ciampitti
Critical management interventions to target the yield potential for each environment are key to food security, increasing the resilience of current agricultural systems in Senegal. Cereal production is highly dependent on pearl millet (Pennisetum glaucum L.) rainfed systems as one of the major field crops for smallholders. This study aims to (i) quantify the production of pearl millet at the department level for the last quinquennial (until 2020), (ii) assess the impact of weather (temperature and precipitation) on the millet-based supply of cereal demand, and (iii) investigate, through crop modeling, the impact of millet-based supply of cereal demand by comparing recommended management interventions with smallholder-based strategies at the department level. Millet-based cereal supply–demand was estimated considering the observed population and the supply via the simulated pearl millet production (obtained using the APSIM-Millet model) at the department level from 1990 to 2021. High temperature and low precipitation occurrence presented a frequency of 35% across departments, leading to a reduction in millet production by roughly 6% relative to the normal average for 32 years. Adoption of recommended management showed the potential to increase the millet supply, more than doubling the current cereal supply, closing the current supply–demand gap (89 kg inhabitant−1). Achieving future cereal self-sufficiency will also require an intensification of other cereal production.
{"title":"Management interventions of pearl millet systems for attaining cereal self-sufficiency in Senegal","authors":"Nilson Aparecido Vieira Junior, Ana J. P. Carcedo, Doohong Min, A. Diatta, Alemie Araya, P. V. V. Prasad, Amadiane Diallo, Ignacio Ciampitti","doi":"10.3389/fsufs.2023.1281496","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1281496","url":null,"abstract":"Critical management interventions to target the yield potential for each environment are key to food security, increasing the resilience of current agricultural systems in Senegal. Cereal production is highly dependent on pearl millet (Pennisetum glaucum L.) rainfed systems as one of the major field crops for smallholders. This study aims to (i) quantify the production of pearl millet at the department level for the last quinquennial (until 2020), (ii) assess the impact of weather (temperature and precipitation) on the millet-based supply of cereal demand, and (iii) investigate, through crop modeling, the impact of millet-based supply of cereal demand by comparing recommended management interventions with smallholder-based strategies at the department level. Millet-based cereal supply–demand was estimated considering the observed population and the supply via the simulated pearl millet production (obtained using the APSIM-Millet model) at the department level from 1990 to 2021. High temperature and low precipitation occurrence presented a frequency of 35% across departments, leading to a reduction in millet production by roughly 6% relative to the normal average for 32 years. Adoption of recommended management showed the potential to increase the millet supply, more than doubling the current cereal supply, closing the current supply–demand gap (89 kg inhabitant−1). Achieving future cereal self-sufficiency will also require an intensification of other cereal production.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"2 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139380964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1291866
Yulian Gao, Lin Wang, Yaojie Yue
An inadequate understanding of the impacts of adaptation countermeasures tends to exaggerate the adverse effects of climate change on agricultural systems. Motivated by proposing reasonable climate change adaptation countermeasures, the present study applied the EPIC model to quantify the impacts of climate change and irrigation changes with future socioeconomic development on agricultural production. Winter wheat yield losses using dynamic irrigation parameters in the North China Plain (NCP) from 2010 to 2099 under a scenario coupling climate change and future socioeconomic development (RCP8.5-SSP3), and those under an extreme climate change scenario (RCP8.5), were simulated. Results show that EPIC model demonstrates superior performance in simulating winter wheat yields in NCP (RMSE = 12.79 kg/ha), with the distribution of simulated and observed yields is relatively consistent. The winter wheat yield loss in the NCP was high in the south and low in the north. The yield loss rate of winter wheat was 0.21 under the RCP8.5-SSP3 scenario, compared with 0.35 under the RCP8.5 scenario, indicating a superior climatic adaptation of irrigation. However, under the RCP8.5-SSP3 scenario, the yield loss rate increased from 0.17 in the near term to 0.26 in the long term, implying the benefits of irrigation will be diminished with long-term climate change. It is noteworthy that yield improvement was facilitated by irrigation in part of the NCP (accounting for 14.6% area), suggesting that irrigation may lead to an increase in winter wheat yields in some regions even under extreme climate change conditions. This study highlights the significance of quantitatively revealing the benefits and limitations of adaptive countermeasures which could assist in enhancing climate change adaptation while preserving a sustainable agricultural system.
{"title":"Impact of irrigation on vulnerability of winter wheat under extreme climate change scenario: a case study of North China Plain","authors":"Yulian Gao, Lin Wang, Yaojie Yue","doi":"10.3389/fsufs.2023.1291866","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1291866","url":null,"abstract":"An inadequate understanding of the impacts of adaptation countermeasures tends to exaggerate the adverse effects of climate change on agricultural systems. Motivated by proposing reasonable climate change adaptation countermeasures, the present study applied the EPIC model to quantify the impacts of climate change and irrigation changes with future socioeconomic development on agricultural production. Winter wheat yield losses using dynamic irrigation parameters in the North China Plain (NCP) from 2010 to 2099 under a scenario coupling climate change and future socioeconomic development (RCP8.5-SSP3), and those under an extreme climate change scenario (RCP8.5), were simulated. Results show that EPIC model demonstrates superior performance in simulating winter wheat yields in NCP (RMSE = 12.79 kg/ha), with the distribution of simulated and observed yields is relatively consistent. The winter wheat yield loss in the NCP was high in the south and low in the north. The yield loss rate of winter wheat was 0.21 under the RCP8.5-SSP3 scenario, compared with 0.35 under the RCP8.5 scenario, indicating a superior climatic adaptation of irrigation. However, under the RCP8.5-SSP3 scenario, the yield loss rate increased from 0.17 in the near term to 0.26 in the long term, implying the benefits of irrigation will be diminished with long-term climate change. It is noteworthy that yield improvement was facilitated by irrigation in part of the NCP (accounting for 14.6% area), suggesting that irrigation may lead to an increase in winter wheat yields in some regions even under extreme climate change conditions. This study highlights the significance of quantitatively revealing the benefits and limitations of adaptive countermeasures which could assist in enhancing climate change adaptation while preserving a sustainable agricultural system.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"18 4","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139382995","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1296922
Qinglong Huang, Meiqiu Chen, Ting Zhang, Fulin Zhang, Jie Zhang
Rice production is the core component of the food security strategy in China, but it is also a major source of methane and nitrous oxide. Promoting low-carbon rice farming (LCRF) to increase the carbon sink, decrease carbon emissions, and achieve low-carbon, high-yield production is an inevitable “win-win” choice for achieving “double carbon” targets and guaranteeing national food security. This study contributes to the advancement of research on farmers’ adoption decisions and fills gaps in LCRF’s technical research on farmers’ decision-making behavior. The results also provide a basis for formulating policies to encourage LCRF and protect cultivated land.This study conducted field research on 2,173 farming households in Jiangxi Province, a traditional agricultural province in China, and examined the effects of personal forces, local forces, and cultural forces on LCRF adoption behavior by introducing the distributed cognition theoretical framework based on a status quo analysis and employing the multivariate ordinal logistic model.The results of the study showed that: 1) the overall acceptance of LCRF behavior is currently not very high. In the 2173 questionnaires, the mean number of LCRF behavior items accepted by farmers was 3.10 items; 153 farmers did not adopt any LCRF behavior, and only 77 farmers adopted all LCRF behaviors. Most farmers (n = 535) adopted three LCRF behaviors. 2) In distributed cognition affecting LCRF behavior, acceptance was primarily affected by cultural forces, followed by local forces, while the effects of personal forces were limited. Therefore, it is recommended that training and promotion should be increased, policy subsidies should be increased, the land market should be improved, and LCRF demonstrations should be carried out to increase the acceptance of LCRF behavior among rice farmers.
{"title":"Analysis of low-carbon rice farming behavior and its influencing factors in farmers under the distributed cognition perspective—empirical study based on 2,173 farmers in Jiangxi Province","authors":"Qinglong Huang, Meiqiu Chen, Ting Zhang, Fulin Zhang, Jie Zhang","doi":"10.3389/fsufs.2023.1296922","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1296922","url":null,"abstract":"Rice production is the core component of the food security strategy in China, but it is also a major source of methane and nitrous oxide. Promoting low-carbon rice farming (LCRF) to increase the carbon sink, decrease carbon emissions, and achieve low-carbon, high-yield production is an inevitable “win-win” choice for achieving “double carbon” targets and guaranteeing national food security. This study contributes to the advancement of research on farmers’ adoption decisions and fills gaps in LCRF’s technical research on farmers’ decision-making behavior. The results also provide a basis for formulating policies to encourage LCRF and protect cultivated land.This study conducted field research on 2,173 farming households in Jiangxi Province, a traditional agricultural province in China, and examined the effects of personal forces, local forces, and cultural forces on LCRF adoption behavior by introducing the distributed cognition theoretical framework based on a status quo analysis and employing the multivariate ordinal logistic model.The results of the study showed that: 1) the overall acceptance of LCRF behavior is currently not very high. In the 2173 questionnaires, the mean number of LCRF behavior items accepted by farmers was 3.10 items; 153 farmers did not adopt any LCRF behavior, and only 77 farmers adopted all LCRF behaviors. Most farmers (n = 535) adopted three LCRF behaviors. 2) In distributed cognition affecting LCRF behavior, acceptance was primarily affected by cultural forces, followed by local forces, while the effects of personal forces were limited. Therefore, it is recommended that training and promotion should be increased, policy subsidies should be increased, the land market should be improved, and LCRF demonstrations should be carried out to increase the acceptance of LCRF behavior among rice farmers.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"2 6","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139383145","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-01-05DOI: 10.3389/fsufs.2023.1287150
Yusi Xie, Zhong Xing
China’s current urban gardening promotion policies mainly focus on community gardens and lack in-depth research on the differentiated needs of different urban gardeners. To meet the diverse needs of China’s gardeners, this study proposes a typology that classifies gardeners into urban native and migrant ones based on their urban and rural living experiences in China. A questionnaire survey conducted in the core area of Chongqing city revealed significant differences and some similarities in gardening motivations and behaviors between urban native and migrant gardeners: (1) Although most of the gardeners approved of the value of food production and green scenery creation that Chinese urban gardening has, and disapproved of its value for family income generation, the urban native gardeners’ disapproving attitude towards family income generation, and their approval of green scenery creation were more assertive, while on the contrary, the urban migrant gardeners had a more robust approval attitude towards food production. (2) The urban native gardeners preferred proximity and small private spaces for a combination of ornamental vegetation and edible vegetables. In contrast, the urban migrated gardeners preferred larger areas for gardening in non-community spaces and leaned towards edible vegetables. (3) Both have shared motivations related to the recreation and ecological conservation values of urban gardening. Given the above differences and similarities, this paper proposes an urban gardening development strategy that meets the needs of the two types of gardeners in China, including space planning and design, operation, and management of gardening spaces, and organization of activities.
{"title":"Adapting to urban gardening in China: how will policymaking help migrant and native gardeners?","authors":"Yusi Xie, Zhong Xing","doi":"10.3389/fsufs.2023.1287150","DOIUrl":"https://doi.org/10.3389/fsufs.2023.1287150","url":null,"abstract":"China’s current urban gardening promotion policies mainly focus on community gardens and lack in-depth research on the differentiated needs of different urban gardeners. To meet the diverse needs of China’s gardeners, this study proposes a typology that classifies gardeners into urban native and migrant ones based on their urban and rural living experiences in China. A questionnaire survey conducted in the core area of Chongqing city revealed significant differences and some similarities in gardening motivations and behaviors between urban native and migrant gardeners: (1) Although most of the gardeners approved of the value of food production and green scenery creation that Chinese urban gardening has, and disapproved of its value for family income generation, the urban native gardeners’ disapproving attitude towards family income generation, and their approval of green scenery creation were more assertive, while on the contrary, the urban migrant gardeners had a more robust approval attitude towards food production. (2) The urban native gardeners preferred proximity and small private spaces for a combination of ornamental vegetation and edible vegetables. In contrast, the urban migrated gardeners preferred larger areas for gardening in non-community spaces and leaned towards edible vegetables. (3) Both have shared motivations related to the recreation and ecological conservation values of urban gardening. Given the above differences and similarities, this paper proposes an urban gardening development strategy that meets the needs of the two types of gardeners in China, including space planning and design, operation, and management of gardening spaces, and organization of activities.","PeriodicalId":36666,"journal":{"name":"Frontiers in Sustainable Food Systems","volume":"44 31","pages":""},"PeriodicalIF":4.7,"publicationDate":"2024-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139382354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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