Rice Science最新文献

英文中文

Leucine-Rich Repeat Protein Family Regulates Stress Tolerance and Development in Plants

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-01-01 DOI: 10.1016/j.rsci.2024.12.003

Hao Zhiqi , Wang Tingyi , Chen Dongdong , Shen Lan , Zhang Guangheng , Qian Qian , Zhu Li

The leucine-rich repeat (LRR) protein family is involved in a variety of fundamental metabolic and signaling processes in plants, including growth and defense responses. LRR proteins can be divided into two categories: those containing LRR domains along with other structural elements, which are further subdivided into five groups, LRR receptor-like kinases, LRR receptor-like proteins, nucleotide-binding site LRR proteins, LRR-extensin proteins, and polygalacturonase-inhibiting proteins, and those containing only LRR domains. Functionally, various LRR proteins are primarily involved in plant development and responses to environmental stress. Notably, the LRR protein family plays a central role in signal transduction pathways related to stress adaptation. In this review, we classify and analyze the functions of LRR proteins in plants. While extensive research has been conducted on the roles of LRR proteins in disease resistance signaling, these proteins also play important roles in abiotic stress responses. This review highlights recent advances in understanding how LRR proteins mediate responses to biotic and abiotic stresses. Building upon these insights, further exploration of the roles of LRR proteins in abiotic stress resistance may aid efforts to develop rice varieties with enhanced stress and disease tolerance.

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引用次数: 0

CHOLINE TRANSPORTER-RELATED 4 (CTR4) Is Involved in Drought and Saline Tolerance in Rice

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2025-01-01 DOI: 10.1016/j.rsci.2024.10.002

Yu Shicong , Luo Ruxian , Zheng Shuqin , Ning Jing , Shi Yuanzhu , Guo Daiming , Jia Liangmeng , Wang Sen , Xiao Guizong , Guo Pengwang , Li Yang , Ma Xiaoding

The tolerance of rice to drought and saline stress is crucial for maintaining yields and promoting widespread cultivation. From an ethyl methanesulfonate (EMS)-mutagenized mutant library, we identified a mutant that is susceptible to osmotic stress, named Osmotic Stress Sensitivity 1 (Oss1). Using MutMap sequencing, we characterized the role of a choline transporter-related family gene, CTR4 (Choline Transporter-Related 4), in rice’s tolerance to drought and salt stress. CTR4 plays a critical role in regulating membrane lipid synthesis. In knockout mutants, the total membrane lipid content, especially unsaturated fatty acids, was significantly reduced. Compared with the wild type, knockout mutants exhibited decreased membrane lipid stability under drought and salt stress, faster water loss, higher relative electrolyte leakage, and lower levels of proline and soluble sugars, leading to impaired tolerance to drought and salt stress. In contrast, the overexpression of CTR4 enhanced seedling tolerance to drought and saline stress. The overexpression lines displayed lower malondialdehyde levels, reduced relative electrolyte leakage, and slower rates of leaf water loss under stress conditions, thereby improving seedling survival rates during stress. Moreover, lipid synthesis gene expression was down-regulated in CTR4 mutants, potentially exacerbating membrane permeability defects and further compromising stress resistance. These findings suggest that CTR4 mediates choline transport and influences cell membrane formation, thereby enhancing rice defenses against drought and salt stress by maintaining lipid homeostasis.

{"title":"CHOLINE TRANSPORTER-RELATED 4 (CTR4) Is Involved in Drought and Saline Tolerance in Rice","authors":"Yu Shicong , Luo Ruxian , Zheng Shuqin , Ning Jing , Shi Yuanzhu , Guo Daiming , Jia Liangmeng , Wang Sen , Xiao Guizong , Guo Pengwang , Li Yang , Ma Xiaoding","doi":"10.1016/j.rsci.2024.10.002","DOIUrl":"10.1016/j.rsci.2024.10.002","url":null,"abstract":"<div><div>The tolerance of rice to drought and saline stress is crucial for maintaining yields and promoting widespread cultivation. From an ethyl methanesulfonate (EMS)-mutagenized mutant library, we identified a mutant that is susceptible to osmotic stress, named <em>Osmotic Stress Sensitivity 1</em> (<em>Oss1</em>). Using MutMap sequencing, we characterized the role of a choline transporter-related family gene, <em>CTR4</em> (<em>Choline Transporter-Related 4</em>), in rice’s tolerance to drought and salt stress. <em>CTR4</em> plays a critical role in regulating membrane lipid synthesis. In knockout mutants, the total membrane lipid content, especially unsaturated fatty acids, was significantly reduced. Compared with the wild type, knockout mutants exhibited decreased membrane lipid stability under drought and salt stress, faster water loss, higher relative electrolyte leakage, and lower levels of proline and soluble sugars, leading to impaired tolerance to drought and salt stress. In contrast, the overexpression of <em>CTR4</em> enhanced seedling tolerance to drought and saline <em>stre</em>ss. The overexpression lines displayed lower malondialdehyde levels, reduced relative electrolyte leakage, and slower rates of leaf water loss under stress conditions, thereby improving seedling survival rates during stress. Moreover, lipid synthesis gene expression was down-regulated in <em>CTR4</em> mutants, potentially exacerbating membrane permeability defects and further compromising stress resistance. These findings suggest that <em>CTR4</em> mediates choline transport and influences cell membrane formation, thereby enhancing rice defenses against drought and salt stress by maintaining lipid homeostasis.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"32 1","pages":"Pages 52-66"},"PeriodicalIF":5.6,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143378827","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}

引用次数: 0

Simulating Responses of Rice Yield and Nitrogen Fates to Ground Cover Rice Production System under Different Types of Precipitation Years

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.06.004

Ren Jian , Hu Kelin , Feng Puyu , William D. Batchelor , Liu Haitao , Lü Shihua

The Ground Cover Rice Production System (GCRPS) has considerable potential for securing rice production in hilly areas. However, its impact on yields and nitrogen (N) fates remains uncertain under varying rainfall conditions. A two-year field experiment (2021–2022) was conducted in Ziyang, Sichuan Province, located in the hilly areas of Southwest China. The experiment included two cultivation methods: conventional flooding paddy (Paddy, W1) and GCRPS (W2). These methods were combined with three N management practices: N1 (no-N fertilizer), N2 (135 kg/hm² urea as a base fertilizer in both W1 and W2), and N3 (135 kg/hm² urea with split application for W1 and 67.5 kg/hm² urea and chicken manure separately for W2). The WHCNS (Soil Water Heat Carbon Nitrogen Simulator) model was calibrated and validated to simulate ponding water depth, soil water storage, soil mineral N content, leaf area index, aboveground dry matter, crop N uptake, and rice yield. Subsequently, this model was used to simulate the responses of rice yield and N fates to GCRPS under different types of precipitation years using meteorological data from 1980 to 2018. The results indicated that the WHCNS model performed well in simulating crop growth and N fates for both Paddy and GCRPS. Compared with Paddy, GCRPS reduced N leaching (35.1%–54.9%), ammonia volatilization (0.7%–13.6%), N runoff (71.1%–83.5%), denitrification (3.8%–6.7%), and total N loss (33.8%–56.9%) for all precipitation year types. However, GCRPS reduced crop N uptake and yield during wet years, while increasing crop N uptake and yield during dry and normal years. Fertilizer application reduced the stability and sustainability of rice yield in wet years, but increased the stability and sustainability of rice yield in dry and normal years. In conclusion, GCRPS is more suitable for normal and dry years in the study region, leading to increased rice yield and reduced N loss.

{"title":"Simulating Responses of Rice Yield and Nitrogen Fates to Ground Cover Rice Production System under Different Types of Precipitation Years","authors":"Ren Jian , Hu Kelin , Feng Puyu , William D. Batchelor , Liu Haitao , Lü Shihua","doi":"10.1016/j.rsci.2024.06.004","DOIUrl":"10.1016/j.rsci.2024.06.004","url":null,"abstract":"<div><div>The Ground Cover Rice Production System (GCRPS) has considerable potential for securing rice production in hilly areas. However, its impact on yields and nitrogen (N) fates remains uncertain under varying rainfall conditions. A two-year field experiment (2021–2022) was conducted in Ziyang, Sichuan Province, located in the hilly areas of Southwest China. The experiment included two cultivation methods: conventional flooding paddy (Paddy, W1) and GCRPS (W2). These methods were combined with three N management practices: N1 (no-N fertilizer), N2 (135 kg/hm<sup>2</sup> urea as a base fertilizer in both W1 and W2), and N3 (135 kg/hm<sup>2</sup> urea with split application for W1 and 67.5 kg/hm<sup>2</sup> urea and chicken manure separately for W2). The WHCNS (Soil Water Heat Carbon Nitrogen Simulator) model was calibrated and validated to simulate ponding water depth, soil water storage, soil mineral N content, leaf area index, aboveground dry matter, crop N uptake, and rice yield. Subsequently, this model was used to simulate the responses of rice yield and N fates to GCRPS under different types of precipitation years using meteorological data from 1980 to 2018. The results indicated that the WHCNS model performed well in simulating crop growth and N fates for both Paddy and GCRPS. Compared with Paddy, GCRPS reduced N leaching (35.1%–54.9%), ammonia volatilization (0.7%–13.6%), N runoff (71.1%–83.5%), denitrification (3.8%–6.7%), and total N loss (33.8%–56.9%) for all precipitation year types. However, GCRPS reduced crop N uptake and yield during wet years, while increasing crop N uptake and yield during dry and normal years. Fertilizer application reduced the stability and sustainability of rice yield in wet years, but increased the stability and sustainability of rice yield in dry and normal years. In conclusion, GCRPS is more suitable for normal and dry years in the study region, leading to increased rice yield and reduced N loss.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 6","pages":"Pages 725-739"},"PeriodicalIF":5.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178708","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}

引用次数: 0

Breeding Resilience: Exploring Lodging Resistance Mechanisms in Rice

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.08.002

Durga Prasad Mullangie , Kalaimagal Thiyagarajan , Manonmani Swaminathan , Jagadeesan Ramalingam , Sritharan Natarajan , Senthilkumar Govindan

Lodging is more than just plants falling over; it incurs significant economic losses for farmers leading to a decrease in both yield and quality of the final produce. Human management practices, such as dense sowing, excessive nitrogen fertilizer applications, inappropriate sowing dates, and upland rice cultivation, exacerbate the risk of lodging in rice. While breeders have developed high-yielding rice varieties utilizing the sd1 gene, relying solely on this gene is insufficient to enhance lodging resistance. Identifying the traits that contribute to lodging resistance is crucial. Key factors include biochemical, anatomical, and morphological traits, such as the levels of lignin, cellulose, hemicellulose, silicon, and potassium, along with the number and area of vascular bundles and the thickness, diameter, and length of the culm. Moreover, markers associated with lodging-related genes, like SCM2, SCM3, SCM4, and prl4, can be utilized effectively in marker-assisted backcrossing to develop rice varieties with desirable culm traits. This literature review aims to aid rice breeders in addressing the issue of lodging by examining traits that influence lodging resistance, developing phenotyping strategies for these traits, identifying suitable instrumentation, exploring methods for screening lodging-resistant plants, understanding the mathematical relationships involved, and considering molecular breeding aspects for pyramiding genes related to lodging.

{"title":"Breeding Resilience: Exploring Lodging Resistance Mechanisms in Rice","authors":"Durga Prasad Mullangie , Kalaimagal Thiyagarajan , Manonmani Swaminathan , Jagadeesan Ramalingam , Sritharan Natarajan , Senthilkumar Govindan","doi":"10.1016/j.rsci.2024.08.002","DOIUrl":"10.1016/j.rsci.2024.08.002","url":null,"abstract":"<div><div>Lodging is more than just plants falling over; it incurs significant economic losses for farmers leading to a decrease in both yield and quality of the final produce. Human management practices, such as dense sowing, excessive nitrogen fertilizer applications, inappropriate sowing dates, and upland rice cultivation, exacerbate the risk of lodging in rice. While breeders have developed high-yielding rice varieties utilizing the <em>sd1</em> gene, relying solely on this gene is insufficient to enhance lodging resistance. Identifying the traits that contribute to lodging resistance is crucial. Key factors include biochemical, anatomical, and morphological traits, such as the levels of lignin, cellulose, hemicellulose, silicon, and potassium, along with the number and area of vascular bundles and the thickness, diameter, and length of the culm. Moreover, markers associated with lodging-related genes, like <em>SCM2</em>, <em>SCM3</em>, <em>SCM4</em>, and <em>prl4</em>, can be utilized effectively in marker-assisted backcrossing to develop rice varieties with desirable culm traits. This literature review aims to aid rice breeders in addressing the issue of lodging by examining traits that influence lodging resistance, developing phenotyping strategies for these traits, identifying suitable instrumentation, exploring methods for screening lodging-resistant plants, understanding the mathematical relationships involved, and considering molecular breeding aspects for pyramiding genes related to lodging.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 6","pages":"Pages 659-672"},"PeriodicalIF":5.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178332","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}

引用次数: 0

Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.08.001

Yang Yigang , Xu Ya’nan , Bai Yeran , Zhang Yuanpei , Han Wei , Makoto Saito , Lü Guohua , Song Jiqing , Bai Wenbo

Rice direct seeding technology is an appealing alternative to traditional transplanting because it conserves labor and irrigation resources. Nevertheless, there are two main issues, salt stress and alkaline stress, which contribute to poor emergence and seedling growth, thereby preventing the widespread adoption and application of this technique in the Ningxia Region of China. Therefore, to determine whether germination can be promoted by mixed-oligosaccharide (KP) priming (in which seeds are soaked in a KP solution before sowing) under salt and alkaline stress, a proteomics study was performed. KP-priming significantly mitigated abiotic stress, such as salt and alkaline stress, by inhibiting root elongation, ultimately improving seedling establishment. By comparing the proteomics analyses, we found that energy metabolic pathway was a vital factor in KP-priming, which explains the alleviation of salt and alkaline stress. Key proteins involved in starch mobilization, pyruvate mobilization, and ATP synthesis, were up-regulated by KP-priming, significantly blocking salt and alkaline-triggered starch accumulation while enhancing pyruvate metabolism. KP-priming also up-regulated ATP synthase to improve energy efficiency, thereby improving ATP production. In addition, it enhanced antioxidant enzymatic activities and reduced the accumulation of reactive oxygen species. All of these factors contributed to a better understanding of the energy regulatory pathway enhanced by KP-priming, which mediated the promotion of growth under salt and alkaline conditions. Thus, this study demonstrated that KP-priming can improve rice seed germination under salt and alkaline stress by altering energy metabolism.

{"title":"Mixed-Oligosaccharides Promote Seedling Growth of Direct-Seeded Rice under Salt and Alkaline Stress","authors":"Yang Yigang , Xu Ya’nan , Bai Yeran , Zhang Yuanpei , Han Wei , Makoto Saito , Lü Guohua , Song Jiqing , Bai Wenbo","doi":"10.1016/j.rsci.2024.08.001","DOIUrl":"10.1016/j.rsci.2024.08.001","url":null,"abstract":"<div><div>Rice direct seeding technology is an appealing alternative to traditional transplanting because it conserves labor and irrigation resources. Nevertheless, there are two main issues, salt stress and alkaline stress, which contribute to poor emergence and seedling growth, thereby preventing the widespread adoption and application of this technique in the Ningxia Region of China. Therefore, to determine whether germination can be promoted by mixed-oligosaccharide (KP) priming (in which seeds are soaked in a KP solution before sowing) under salt and alkaline stress, a proteomics study was performed. KP-priming significantly mitigated abiotic stress, such as salt and alkaline stress, by inhibiting root elongation, ultimately improving seedling establishment. By comparing the proteomics analyses, we found that energy metabolic pathway was a vital factor in KP-priming, which explains the alleviation of salt and alkaline stress. Key proteins involved in starch mobilization, pyruvate mobilization, and ATP synthesis, were up-regulated by KP-priming, significantly blocking salt and alkaline-triggered starch accumulation while enhancing pyruvate metabolism. KP-priming also up-regulated ATP synthase to improve energy efficiency, thereby improving ATP production. In addition, it enhanced antioxidant enzymatic activities and reduced the accumulation of reactive oxygen species. All of these factors contributed to a better understanding of the energy regulatory pathway enhanced by KP-priming, which mediated the promotion of growth under salt and alkaline conditions. Thus, this study demonstrated that KP-priming can improve rice seed germination under salt and alkaline stress by altering energy metabolism.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 6","pages":"Pages 712-724"},"PeriodicalIF":5.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178709","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}

引用次数: 0

Histone Acetyltransferase GCN5 Regulates Rice Growth and Development and Enhances Salt Tolerance

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.06.002

Chao Xue , Xinru Zhao , Xu Chen , Xingjing Cai , Yingying Hu , Xiya Li , Yong Zhou , Zhiyun Gong

Histone acetylation is indispensable in the process of crops resisting abiotic stress, which is jointly catalyzed by histone acetyltransferases and deacetylases. However, the mechanism of regulating salt tolerance through histone acetyltransferase GCN5 is still unclear. We revealed that GCN5 can catalyze the acetylation of canonical H3 and H4 lysine residues both in vivo and in vitro in rice. The knockout mutants and RNA interference lines of OsGCN5 exhibited severe growth inhibition and defects in salt tolerance, while the over-expression of OsGCN5 enhanced the salt tolerance of rice seedlings, indicating that OsGCN5 positively regulated the response of rice to salt stress. RNA-seq analysis suggested OsGCN5 may positively regulate the salt tolerance of rice by inhibiting the expression of OsHKT2;1 or other salt-responsive genes. Taken together, our study indicated that GCN5 plays a key role in enhancing salt tolerance in rice.

引用次数: 0

Applying Boron Fertilizer at Different Growth Stages Promotes Boron Uptake and Productivity in Rice

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.08.007

Sitthikorn Bodeerath , Jeeraporn Veeradittakit , Sansanee Jamjod , Chanakan Prom-U-Thai

Boron (B) is an essential micronutrient for plant growth and yield. We investigated the optimal growth stage for B fertilizer application to improve rice production. The study was conducted using a 2 × 4 factorial design in a randomized complete block during the rainy season of 2022. We utilized two premium Thai rice varieties Khao Dawk Mali 105 (KDML105) and Pathum Thani 1 (PTT1), and four soil B fertilizer treatments: a control (no B application), B application at the tillering stage, B application at the flowering stage, and B application at both the tillering and flowering stages. The results showed that the application of B fertilizer at the flowering stage and at both the tillering and flowering stages increased grain yield of KDML105 by 25.0% and 34.0%, respectively. In contrast, the grain yield of PTT1 showed no response to B application. The increased grain yield of KDML105 was attributed to an increased number of panicles per plant and a higher filled grain rate, which was due to the elevated B concentration in all plant parts and the total B uptake, particularly when B was applied at the flowering and tillering stages. Notably, B application increased the fertilized grain rates and reduced the proportion of unfertilized grains, a phenomenon that corresponded with the increased B concentration across all plant parts. The total B uptake ranged from 5.11 to 15.85 mg/m² in KDML105 and from 8.37 to 24.26 mg/m² in PTT1, with the highest total B uptake observed when B was applied at both the tillering and flowering stages for both rice varieties.

{"title":"Applying Boron Fertilizer at Different Growth Stages Promotes Boron Uptake and Productivity in Rice","authors":"Sitthikorn Bodeerath , Jeeraporn Veeradittakit , Sansanee Jamjod , Chanakan Prom-U-Thai","doi":"10.1016/j.rsci.2024.08.007","DOIUrl":"10.1016/j.rsci.2024.08.007","url":null,"abstract":"<div><div>Boron (B) is an essential micronutrient for plant growth and yield. We investigated the optimal growth stage for B fertilizer application to improve rice production. The study was conducted using a 2 × 4 factorial design in a randomized complete block during the rainy season of 2022. We utilized two premium Thai rice varieties Khao Dawk Mali 105 (KDML105) and Pathum Thani 1 (PTT1), and four soil B fertilizer treatments: a control (no B application), B application at the tillering stage, B application at the flowering stage, and B application at both the tillering and flowering stages. The results showed that the application of B fertilizer at the flowering stage and at both the tillering and flowering stages increased grain yield of KDML105 by 25.0% and 34.0%, respectively. In contrast, the grain yield of PTT1 showed no response to B application. The increased grain yield of KDML105 was attributed to an increased number of panicles per plant and a higher filled grain rate, which was due to the elevated B concentration in all plant parts and the total B uptake, particularly when B was applied at the flowering and tillering stages. Notably, B application increased the fertilized grain rates and reduced the proportion of unfertilized grains, a phenomenon that corresponded with the increased B concentration across all plant parts. The total B uptake ranged from 5.11 to 15.85 mg/m<sup>2</sup> in KDML105 and from 8.37 to 24.26 mg/m<sup>2</sup> in PTT1, with the highest total B uptake observed when B was applied at both the tillering and flowering stages for both rice varieties.</div></div>","PeriodicalId":56069,"journal":{"name":"Rice Science","volume":"31 6","pages":"Pages 751-760"},"PeriodicalIF":5.6,"publicationDate":"2024-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143178710","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}

引用次数: 0

Does Financial Inclusion Influence Economic Efficiency of Rice Farming? Evidence from Ogun State, Nigeria

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.10.001

Shakirat B. Ibrahim , Raheem O. Aminu , Aisha O. Arowolo , Opeyemi O. Okanlawon , Afeez A. Adegbola

引用次数: 0

Immune Sensor Xa21 Regulates Bacterial Leaf Blight Infection in Seven Rice Cultivars from Myanmar

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.06.008

Nay Chi Aye , Rizwana Begum Syed Nabi , Muhammad Shahid , Nkulu Kabange Rolly , Rupesh Tayade , Lee-Bong Choon , Adil Hussain , Byung-Wook Yun

引用次数: 0

Molecular Evolution of Rice Blast Resistance Gene bsr-d1

IF 5.6 2区农林科学 Q1 AGRONOMY

Rice Science

Pub Date : 2024-11-01 DOI: 10.1016/j.rsci.2024.08.004

Wei Li , Mengchen Zhang , Yaolong Yang , Lin Weng , Peisong Hu , Xinghua Wei

Rice blast, caused by the fungus Magnaporthe oryzae, reduces rice yields by 10% to 35%. Incorporating blast resistance genes into breeding programs is an effective strategy to combat this disease. Understanding the genetic variants that confer resistance is crucial to this strategy. The gene Bsr-d1 encodes a C₂H₂-like transcription factor, and its recessive allele confers broad-spectrum resistance against infections by various strains of M. oryzae. In this study, we investigated the molecular evolution of the rice blast resistance gene bsr-d1 in a representative population consisting of 827 cultivated and wild rice accessions. Our results revealed that wild rice exhibited significantly higher nucleotide diversity, with polymorphic regions primarily concentrated in the promoter region, in contrast to indica and japonica rice varieties. The Bsr-d1 gene displayed significant differentiation between indica and japonica rice varieties, with the bsr-d1 resistance allele being unique to indica rice. Haplotype network and phylogenetic analyses suggested that the bsr-d1 resistance allele most likely originated from Oryza nivara in the region adjacent to the Indian Peninsula and the Indochina Peninsula. Moreover, we explored the utilization of bsr-d1 resistance alleles in China and designed a pair of DNA primers based on the polymorphic sites for the detection of the bsr-d1 resistance gene. In summary, our study uncovering the origin and evolution of bsr-d1 will enhance our understanding of resistance gene variation and expedite the resistance breeding process.

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