Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374034
Diego Santos, Ângela Maria de Miranda Freitas, Maria Iracema Bezerra Loiola, Maria Teresa Buril
Abstract We present the taxonomic treatment of Evolvulus in the state of Ceará, as part of the project “Flora do Ceará: Knowing to conserve”. The study was based on the floristic-morphological analysis of specimens deposited in the ASE, CEN, EAC, ESA, HCDAL, HST, HUEFS, HUVA, HVASF, IPA, PEUFR, and UFP herbaria, specialized bibliography, typus collections available on on-line platforms, collections and field observations. In Ceará, we registered 13 species of Evolvulus: E. anagalloides, E. cardiophyllus, E. eleaegnifolius, E. ericifolius, E. filipes, E. glomeratus, E. gypsophiloides, E. linoides, E. nummularius, E. ovatus, E. phyllanthoides, E. pterocaulon, and E. sericeus. Of these, ten occur in protected areas from Ceara state. The greatest species richness for the genus (10) was registered in the open crystalline caatinga. Additionally, we present an identification key, morphological descriptions, geographic distribution, taxonomic and ecological comments, phenology and illustrations of the diagnostic characters of the species.
{"title":"Flora of Ceará state, Brazil: Evolvulus (Cresseae, Convolvulaceae)","authors":"Diego Santos, Ângela Maria de Miranda Freitas, Maria Iracema Bezerra Loiola, Maria Teresa Buril","doi":"10.1590/2175-7860202374034","DOIUrl":"https://doi.org/10.1590/2175-7860202374034","url":null,"abstract":"Abstract We present the taxonomic treatment of Evolvulus in the state of Ceará, as part of the project “Flora do Ceará: Knowing to conserve”. The study was based on the floristic-morphological analysis of specimens deposited in the ASE, CEN, EAC, ESA, HCDAL, HST, HUEFS, HUVA, HVASF, IPA, PEUFR, and UFP herbaria, specialized bibliography, typus collections available on on-line platforms, collections and field observations. In Ceará, we registered 13 species of Evolvulus: E. anagalloides, E. cardiophyllus, E. eleaegnifolius, E. ericifolius, E. filipes, E. glomeratus, E. gypsophiloides, E. linoides, E. nummularius, E. ovatus, E. phyllanthoides, E. pterocaulon, and E. sericeus. Of these, ten occur in protected areas from Ceara state. The greatest species richness for the genus (10) was registered in the open crystalline caatinga. Additionally, we present an identification key, morphological descriptions, geographic distribution, taxonomic and ecological comments, phenology and illustrations of the diagnostic characters of the species.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285185","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374037
Fernanda Santos-Silva, P. Cardoso, Andressa Cabral
Abstract A floristic treatment is presented for Cunoniaceae in the Caparaó National Park (PNC), located in the Mantiqueira Mountain Range, on the border of the Minas Gerais and Espírito Santo states. This conservation unit comprises the highest mountain peak in southeastern Brazil, Bandeira Peak, at 2,890 m of elevation. Its vegetation encompasses different phytophysiognomies, including Dense Ombrophilous Forests, Montane Semi-deciduous Seasonal Forests, and High-Altitude Grasslands. Cunoniaceae was represented in the PNC by four species: Lamanonia ternata, L. ulei, Weinmannia humilis, and W. paulliniifolia. To contribute to further taxonomic studies and species conservation in the Mantiqueira Mountain Range, morphological descriptions, identification keys, photographs in vivo, and comments on the taxonomy, geographic distribution of the recorded species are provided.
{"title":"Cunoniaceae from Caparaó National Park, Mantiqueira Mountain Range, Brazil","authors":"Fernanda Santos-Silva, P. Cardoso, Andressa Cabral","doi":"10.1590/2175-7860202374037","DOIUrl":"https://doi.org/10.1590/2175-7860202374037","url":null,"abstract":"Abstract A floristic treatment is presented for Cunoniaceae in the Caparaó National Park (PNC), located in the Mantiqueira Mountain Range, on the border of the Minas Gerais and Espírito Santo states. This conservation unit comprises the highest mountain peak in southeastern Brazil, Bandeira Peak, at 2,890 m of elevation. Its vegetation encompasses different phytophysiognomies, including Dense Ombrophilous Forests, Montane Semi-deciduous Seasonal Forests, and High-Altitude Grasslands. Cunoniaceae was represented in the PNC by four species: Lamanonia ternata, L. ulei, Weinmannia humilis, and W. paulliniifolia. To contribute to further taxonomic studies and species conservation in the Mantiqueira Mountain Range, morphological descriptions, identification keys, photographs in vivo, and comments on the taxonomy, geographic distribution of the recorded species are provided.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374040
Bruna Benazi Vieira, M. Milward‑de-Azevedo
Abstract Rural communities have repertoires of knowledge associated with the use of plants related to various social and biological aspects. The objective of this study was to identify the diversity of use of food and medicinal plants by the Brejal rural community in Rio de Janeiro state, Brazil. Ethnobotanical data was obtained using the snowball technique and semi-structured interviews with 22 farmers. Species diversity and use-value indices were calculated. Relationships among the numbers of plants cited, interviewee age, gender, and working time in agriculture were investigated. We identified a high diversity index, comprising 185 species belonging to 53 botanical families, notably Asteraceae, Lamiaceae, and Brassicaceae. The greatest use-values were associated with exotic species. Leaves were the plant structures most utilized, and infusions the predominant method of preparation. The prescriptions most commonly cited related to illnesses of the digestive system. Men and women did not differ in terms of the numbers of species cited. We found no correlations between the ages of the interviewees and their working time in agriculture. The uniformity of the number of citations demonstrates the shared knowledge throughout the community, covering a high diversity of plants, uses, indications and preparations.
{"title":"Use of plants and aspects of local knowledge in the rural community of Brejal, Rio de Janeiro, Brazil","authors":"Bruna Benazi Vieira, M. Milward‑de-Azevedo","doi":"10.1590/2175-7860202374040","DOIUrl":"https://doi.org/10.1590/2175-7860202374040","url":null,"abstract":"Abstract Rural communities have repertoires of knowledge associated with the use of plants related to various social and biological aspects. The objective of this study was to identify the diversity of use of food and medicinal plants by the Brejal rural community in Rio de Janeiro state, Brazil. Ethnobotanical data was obtained using the snowball technique and semi-structured interviews with 22 farmers. Species diversity and use-value indices were calculated. Relationships among the numbers of plants cited, interviewee age, gender, and working time in agriculture were investigated. We identified a high diversity index, comprising 185 species belonging to 53 botanical families, notably Asteraceae, Lamiaceae, and Brassicaceae. The greatest use-values were associated with exotic species. Leaves were the plant structures most utilized, and infusions the predominant method of preparation. The prescriptions most commonly cited related to illnesses of the digestive system. Men and women did not differ in terms of the numbers of species cited. We found no correlations between the ages of the interviewees and their working time in agriculture. The uniformity of the number of citations demonstrates the shared knowledge throughout the community, covering a high diversity of plants, uses, indications and preparations.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374035
Leonardo Biral, Gabriel Mendes Marcusso
Abstract Here we present a taxonomic treatment of the subfamily Celastroideae (Celastraceae) in the state of Espírito Santo, southeastern Brazil, as a part of the ongoing project Flora do Espírito Santo. The work is based on analyses of herbaria specimens and fieldwork since 2012. Two genera and thirteen species are reported for Espírito Santo, covering all the vegetation formations found in the state. Celastrus is represented by one species, C. liebmannii, the unique climbing species of the subfamily in Brazil. Monteverdia are shrubs and trees characterized by fruits 2-valved, pericarp coriaceous and white aril. The genus is represented by twelve species, corresponding nearly to one third of the Brazilian species. Celastrus liebmannii is formally reported by the first time to Espírito Santo. Morphological descriptions, comments, color photographs plates, and identification keys for genera and Monteverdia species are provided.
在这里，我们提出了在巴西东南部的Espírito Santo州的Celastroideae亚科(Celastraceae)的分类处理，作为正在进行的Flora do Espírito Santo项目的一部分。这项工作是基于对植物标本的分析和自2012年以来的实地调查。据报道，Espírito Santo有2属13种，覆盖了该州所有的植被结构。Celastrus以一种C. liebmannii为代表，是该亚科在巴西特有的攀援种。Monteverdia是灌木和乔木，其特点是果实2瓣，果皮皮质和白色假种皮。该属有12种，相当于巴西种的近三分之一。第一次正式报道为Espírito Santo。提供了属和种的形态描述、注释、彩色照片和鉴定钥匙。
{"title":"Flora of Espírito Santo: Celastroideae (Celastraceae)","authors":"Leonardo Biral, Gabriel Mendes Marcusso","doi":"10.1590/2175-7860202374035","DOIUrl":"https://doi.org/10.1590/2175-7860202374035","url":null,"abstract":"Abstract Here we present a taxonomic treatment of the subfamily Celastroideae (Celastraceae) in the state of Espírito Santo, southeastern Brazil, as a part of the ongoing project Flora do Espírito Santo. The work is based on analyses of herbaria specimens and fieldwork since 2012. Two genera and thirteen species are reported for Espírito Santo, covering all the vegetation formations found in the state. Celastrus is represented by one species, C. liebmannii, the unique climbing species of the subfamily in Brazil. Monteverdia are shrubs and trees characterized by fruits 2-valved, pericarp coriaceous and white aril. The genus is represented by twelve species, corresponding nearly to one third of the Brazilian species. Celastrus liebmannii is formally reported by the first time to Espírito Santo. Morphological descriptions, comments, color photographs plates, and identification keys for genera and Monteverdia species are provided.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285201","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374038
Vívian Tamaki, Nelson Augustos dos Santos Junior, Janaina Pinheiro Costa, Waldyr Baptista, Yoshito Shidomi, R. M. Suzuki
Abstract The relocation of epiphytes contributes to biodiversity conservation. In this sense, studies that aim to promote the success of the process are necessary. Therefore, the objective of this work was to analyze the effects of initial fresh mass and fertilization on the propagation of two species of Rhipsalis, thus ensuring their success after relocation to a protected area. Therefore, fertilized and unfertilized plants of Rhipsalis puniceodiscus and Rhipsalis trigona initially with one or two cladodes were propagated in a greenhouse for 25 months. After relocation to a forest area, their survival was monitored for 16 months. Survival percentage, shoot length and root length were analyzed every four months. Fresh mass, dry mass and photosynthetic pigment were analyzed before relocating to a native forest. During the protected propagation stage, for both species, individuals presenting more branches and those that were fertilized exhibited more intense overall development. The propagation of R. puniceodiscus and R. trigona in a greenhouse with two cladodes is better than with one cladode. In general, R. puniceodiscus displayed better development under controlled conditions than R. trigona. Propagation using fertilization increased fresh mass and favors growth and survival rate of R. puniceodiscus and R. trigona. It is possible to relocate both species to a preserved area of the Atlantic Forest, but R. trigona presented more potential.
{"title":"Propagation of two epiphytic Cactaceae for relocation to an urban protected area of the Atlantic Forest in São Paulo, Brazil","authors":"Vívian Tamaki, Nelson Augustos dos Santos Junior, Janaina Pinheiro Costa, Waldyr Baptista, Yoshito Shidomi, R. M. Suzuki","doi":"10.1590/2175-7860202374038","DOIUrl":"https://doi.org/10.1590/2175-7860202374038","url":null,"abstract":"Abstract The relocation of epiphytes contributes to biodiversity conservation. In this sense, studies that aim to promote the success of the process are necessary. Therefore, the objective of this work was to analyze the effects of initial fresh mass and fertilization on the propagation of two species of Rhipsalis, thus ensuring their success after relocation to a protected area. Therefore, fertilized and unfertilized plants of Rhipsalis puniceodiscus and Rhipsalis trigona initially with one or two cladodes were propagated in a greenhouse for 25 months. After relocation to a forest area, their survival was monitored for 16 months. Survival percentage, shoot length and root length were analyzed every four months. Fresh mass, dry mass and photosynthetic pigment were analyzed before relocating to a native forest. During the protected propagation stage, for both species, individuals presenting more branches and those that were fertilized exhibited more intense overall development. The propagation of R. puniceodiscus and R. trigona in a greenhouse with two cladodes is better than with one cladode. In general, R. puniceodiscus displayed better development under controlled conditions than R. trigona. Propagation using fertilization increased fresh mass and favors growth and survival rate of R. puniceodiscus and R. trigona. It is possible to relocate both species to a preserved area of the Atlantic Forest, but R. trigona presented more potential.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285227","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374039
Guilherme de Almeida Machado, K. P. Cavalcante, T. A. Ludwig
Abstract Diatoms constitute a representative portion of the algal community of freshwater aquatic environments, but their studies are centered mostly in the south and southern regions of Brazil, making the microalgae biodiversity of water bodies in the semiarid practically unknown. In the state of Ceará, the few records of the Bacillariaceae are centered in the southern region of the state and are generally not identified at specific level. Denticula, Hantzschia, and Tryblionella are worldwide distributed diatom genera that belong to the family Bacillariaceae. The group is characterized by raphe located on a channel, internally supported by silica extensions, the fibulae. This is a taxonomic study on the genera Denticula, Hantzschia, and Tryblionella found in water bodies in northwestern Ceará state. Planktonic and periphytic samples were collected in four hydrographic basins, which are influenced by the semiarid climate, located in northwestern Ceará, northeastern Brazil. Fourteen infrageneric taxa were identified, described, and illustrated, all being pioneer citations for Ceará. The present study highlighted the underestimated diversity of diatoms in the semiarid region of Ceará and the need to cover undersampled or never explored regions to significantly contribute to the knowledge of the diatom flora and its distribution in Brazilian aquatic environments.
{"title":"Denticula, Hantzschia and Tryblionella (Bacillariaceae, Bacillariophyta) from northwestern Ceará freshwaters","authors":"Guilherme de Almeida Machado, K. P. Cavalcante, T. A. Ludwig","doi":"10.1590/2175-7860202374039","DOIUrl":"https://doi.org/10.1590/2175-7860202374039","url":null,"abstract":"Abstract Diatoms constitute a representative portion of the algal community of freshwater aquatic environments, but their studies are centered mostly in the south and southern regions of Brazil, making the microalgae biodiversity of water bodies in the semiarid practically unknown. In the state of Ceará, the few records of the Bacillariaceae are centered in the southern region of the state and are generally not identified at specific level. Denticula, Hantzschia, and Tryblionella are worldwide distributed diatom genera that belong to the family Bacillariaceae. The group is characterized by raphe located on a channel, internally supported by silica extensions, the fibulae. This is a taxonomic study on the genera Denticula, Hantzschia, and Tryblionella found in water bodies in northwestern Ceará state. Planktonic and periphytic samples were collected in four hydrographic basins, which are influenced by the semiarid climate, located in northwestern Ceará, northeastern Brazil. Fourteen infrageneric taxa were identified, described, and illustrated, all being pioneer citations for Ceará. The present study highlighted the underestimated diversity of diatoms in the semiarid region of Ceará and the need to cover undersampled or never explored regions to significantly contribute to the knowledge of the diatom flora and its distribution in Brazilian aquatic environments.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-08-11DOI: 10.1590/2175-7860202374036
Lícia Priscila Nogueira Azevedo, Tiago Borges Rocha, F. B. Gonçalves, Ana Beatriz Frazão Ribeiro, Victorina Bispo Aires, E. Erasmo, K. L. F. Silva
Abstract Brazil is among the countries that most use pesticides in the world. These chemicals cause undesirable changes in ecosystems, particularly the contamination of non-target native forest species through drift. The nuisances caused by pesticides go beyond environmental damage and include public health problems. The objective of this work was to evaluate the effects of glyphosate on leaf gas exchange, photosynthetic pigments and morphoanatomy of seedlings of Eugenia dysenterica. The visual toxicity, physiological and morphoanatomical characteristics of E. dysenterica, when exposed to concentrations of 0, 550, 1110 and 2220 g a.e. ha-1 of glyphosate, were analyzed. The results indicate that the herbicide caused toxicity in the leaves in all treatments. Reductions in photosynthesis (A), stomatal conductance (gs), and transpiration (E) at 47 DAA, were also identified. Glyphosate caused damage to the anatomical structures of E. dysenterica leaves. From the data analyzed it is possible to affirm that plants of E. dysenterica are sensitive to the action of glyphosate. Visible symptoms such as chlorosis and necrosis in the leaf edge are indicators that can be used by rural communities as a warning of the risk of contamination.
巴西是世界上使用农药最多的国家之一。这些化学物质会对生态系统造成不利的变化，特别是通过漂流对非目标原生森林物种的污染。杀虫剂造成的危害不仅是环境破坏，还包括公共健康问题。本研究旨在探讨草甘膦对赤霉素幼苗叶片气体交换、光合色素和形态结构的影响。分析了0、550、1110和2220 g a.e. ha-1浓度草甘膦对大肠杆菌的视觉毒性、生理和形态解剖特征。结果表明，该除草剂在不同处理下均对叶片产生毒性。在47 DAA时，光合作用(A)、气孔导度(gs)和蒸腾作用(E)也有所减少。草甘膦对痢疾杆菌叶片的解剖结构造成损伤。从分析的数据可以肯定，痢疾杆菌的植物对草甘膦的作用是敏感的。可见的症状，如叶片边缘的黄化和坏死，是农村社区可以用来警告污染风险的指标。
{"title":"Physiological and anatomical responses of Eugenia dysenterica to glyphosate","authors":"Lícia Priscila Nogueira Azevedo, Tiago Borges Rocha, F. B. Gonçalves, Ana Beatriz Frazão Ribeiro, Victorina Bispo Aires, E. Erasmo, K. L. F. Silva","doi":"10.1590/2175-7860202374036","DOIUrl":"https://doi.org/10.1590/2175-7860202374036","url":null,"abstract":"Abstract Brazil is among the countries that most use pesticides in the world. These chemicals cause undesirable changes in ecosystems, particularly the contamination of non-target native forest species through drift. The nuisances caused by pesticides go beyond environmental damage and include public health problems. The objective of this work was to evaluate the effects of glyphosate on leaf gas exchange, photosynthetic pigments and morphoanatomy of seedlings of Eugenia dysenterica. The visual toxicity, physiological and morphoanatomical characteristics of E. dysenterica, when exposed to concentrations of 0, 550, 1110 and 2220 g a.e. ha-1 of glyphosate, were analyzed. The results indicate that the herbicide caused toxicity in the leaves in all treatments. Reductions in photosynthesis (A), stomatal conductance (gs), and transpiration (E) at 47 DAA, were also identified. Glyphosate caused damage to the anatomical structures of E. dysenterica leaves. From the data analyzed it is possible to affirm that plants of E. dysenterica are sensitive to the action of glyphosate. Visible symptoms such as chlorosis and necrosis in the leaf edge are indicators that can be used by rural communities as a warning of the risk of contamination.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285267","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-29DOI: 10.1590/2175-7860202374030
A. Valentin-Silva
Abstract Piper species are important components of the understory in tropical and subtropical forests, and some species are of economic and medicinal importance. This genus has been studied in different areas of science. However, some questions remain unanswered after the new circumscription as proposed by phylogenetic studies. Here, I review different aspects related to the reproductive biology of Piper species (phenology, sexual expression, floral biology, pollination and mating systems), comparing the results between Neotropical (representing most of the studies carried out so far) and Paleotropical regions. Seventy-five species were analyzed. Some patterns can be observed, mainly in Neotropical species, such as the predominance of annual flowering and fruiting, dichogamy (generally incomplete protogyny) with gradual and sequential exposure of stigmas, asynchronous pollen release, and pollination by insects. Some aspects have been poorly studied, such as variations in sexual expression, the efficiency of different pollinators, and the chemical composition of floral volatiles associated with their role in pollination. In addition, I discuss remaining gaps and further studies that are required, mainly on Paleotropical Piper species, to obtain basic information on the reproductive biology of these plants. From this, comparisons with Neotropical species can be made, allowing the verification of patterns in this genus.
{"title":"Reproductive biology of Piper species (Piperaceae): a review to link the past to the future","authors":"A. Valentin-Silva","doi":"10.1590/2175-7860202374030","DOIUrl":"https://doi.org/10.1590/2175-7860202374030","url":null,"abstract":"Abstract Piper species are important components of the understory in tropical and subtropical forests, and some species are of economic and medicinal importance. This genus has been studied in different areas of science. However, some questions remain unanswered after the new circumscription as proposed by phylogenetic studies. Here, I review different aspects related to the reproductive biology of Piper species (phenology, sexual expression, floral biology, pollination and mating systems), comparing the results between Neotropical (representing most of the studies carried out so far) and Paleotropical regions. Seventy-five species were analyzed. Some patterns can be observed, mainly in Neotropical species, such as the predominance of annual flowering and fruiting, dichogamy (generally incomplete protogyny) with gradual and sequential exposure of stigmas, asynchronous pollen release, and pollination by insects. Some aspects have been poorly studied, such as variations in sexual expression, the efficiency of different pollinators, and the chemical composition of floral volatiles associated with their role in pollination. In addition, I discuss remaining gaps and further studies that are required, mainly on Paleotropical Piper species, to obtain basic information on the reproductive biology of these plants. From this, comparisons with Neotropical species can be made, allowing the verification of patterns in this genus.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-29DOI: 10.1590/2175-7860202374031
Jéssica Tamara Laet Abreu, Maria Helena Menezes Cordeiro, Leidiane Santana das Neves, A. P. S. Caetano, C. A. Silva
Abstract Etlingera is a genus of the family Zingiberaceae that is native to tropical Asia. Many species are economically important as a source of food, spices, medicines, and ornamental plants. This study aims to elucidate the floral morphology of E. elatior and understand the behavior of the set of stamen and style during floral anthesis, seeking to identify the mechanisms that promote xenogamy in the species. Flower morphology, time of anthesis and movement of the stamen and style during this period, pollen viability, nectar volume, floral visitors, and the reproductive system were evaluated. The flowers of E. elatior exhibited synchronous movement of the style and stamen, however, this movement was not considered as flexistyly, since the species does not present dichogamy. The synchronous movement of the stamen and pistil, by itself, was not enough to promote self-pollination. Fruiting depends on pollinators. The stigma fluid is an important means whereby pollen adheres to the mouthpart of the pollinator. Hummingbirds and bees were considered the most effective pollinators of E. elatior in the area studied.
{"title":"Simultaneous movement of style and stamen set during anthesis in Etlingera elatior (Zingiberaceae)","authors":"Jéssica Tamara Laet Abreu, Maria Helena Menezes Cordeiro, Leidiane Santana das Neves, A. P. S. Caetano, C. A. Silva","doi":"10.1590/2175-7860202374031","DOIUrl":"https://doi.org/10.1590/2175-7860202374031","url":null,"abstract":"Abstract Etlingera is a genus of the family Zingiberaceae that is native to tropical Asia. Many species are economically important as a source of food, spices, medicines, and ornamental plants. This study aims to elucidate the floral morphology of E. elatior and understand the behavior of the set of stamen and style during floral anthesis, seeking to identify the mechanisms that promote xenogamy in the species. Flower morphology, time of anthesis and movement of the stamen and style during this period, pollen viability, nectar volume, floral visitors, and the reproductive system were evaluated. The flowers of E. elatior exhibited synchronous movement of the style and stamen, however, this movement was not considered as flexistyly, since the species does not present dichogamy. The synchronous movement of the stamen and pistil, by itself, was not enough to promote self-pollination. Fruiting depends on pollinators. The stigma fluid is an important means whereby pollen adheres to the mouthpart of the pollinator. Hummingbirds and bees were considered the most effective pollinators of E. elatior in the area studied.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-29DOI: 10.1590/2175-7860202374029
M. O. Garcia, Suzane Olachea Allend, K. F. Cunha, D. Hartwig
Abstract Respiratory bacterial infections are a cause of morbidity and mortality worldwide; most of these infections respond well to antibiotic therapies, although several factors cause bacteria to become increasingly resistant, leading to a concerning public health problem. Hence, researchers have sought new antibiotics that can replace or enhance the effectiveness of existing drugs. Given this scenario, this review is based on original articles from the PubMed and Science Direct databases published from May 2015 to February 2022 that reported the potential of essential oils, extracts, and formulations containing Myrtaceae and nanoparticles against bacteria that affect the respiratory system.
{"title":"Myrtaceae family: an update on plant-derived bioactive compounds against bacteria that affect the respiratory system","authors":"M. O. Garcia, Suzane Olachea Allend, K. F. Cunha, D. Hartwig","doi":"10.1590/2175-7860202374029","DOIUrl":"https://doi.org/10.1590/2175-7860202374029","url":null,"abstract":"Abstract Respiratory bacterial infections are a cause of morbidity and mortality worldwide; most of these infections respond well to antibiotic therapies, although several factors cause bacteria to become increasingly resistant, leading to a concerning public health problem. Hence, researchers have sought new antibiotics that can replace or enhance the effectiveness of existing drugs. Given this scenario, this review is based on original articles from the PubMed and Science Direct databases published from May 2015 to February 2022 that reported the potential of essential oils, extracts, and formulations containing Myrtaceae and nanoparticles against bacteria that affect the respiratory system.","PeriodicalId":38672,"journal":{"name":"Rodriguesia","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67285049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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