Base de dados : MEDLINE Pesquisa : B01.650.940.800.575.912.250.401.125 [Categoria DeCS] Referências encontradas : 25 [refinar] Mostrando: 1 .. 10   no formato [Detalhado]

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[PMID]: 28094097 [Au] Autor: Santos JM; Casaes Alves PA; Silva VC; Kruschewsky Rhem MF; James EK; Gross E [Ad] Endereço: Programa de Pós-Graduação em Biotecnologia, Universidade Estadual de Feira de Santana, Brazil. [Ti] Título: Diverse genotypes of Bradyrhizobium nodulate herbaceous Chamaecrista (Moench) (Fabaceae, Caesalpinioideae) species in Brazil. [So] Source: Syst Appl Microbiol;40(2):69-79, 2017 Mar. [Is] ISSN: 1618-0984 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: The genus Chamaecrista comprises more than 330 species which are mainly distributed across tropical America, especially in Brazil (256 spp.), the main center of radiation. In this study, nodulation of herbaceous Chamaecrista species that are commonly found growing in different vegetation types in the north eastern Brazilian state of Bahia was assessed together with the diversity of rhizobia isolated from their root nodules. Genetic characterization of the isolates was performed using molecular markers to examine the phylogeny of their "core" (16S rRNA, ITS, recA, glnII, dnaK and gyrB) and symbiosis-related (nifH, nodC) genomes. Nodule morphology, anatomy and ultrastructure were also examined, as was the capacity of the isolates to form nodules on Chamaecrista desvauxii and siratro (Macroptilium atropurpureum). Analysis of 16S rRNA gene sequences demonstrated that the isolates belonged to seven clusters within the genus Bradyrhizobium, and more detailed analyses using sequences of the ITS region and concatenated housekeeping genes grouped the Chamaecrista rhizobia by vegetation type and plant species. These analyses also suggested some potentially novel Bradyrhizobium species, which was corroborated by analyses of their nifH and nodC sequences, as these formed separated branches from all Bradyrhizobium type strains. All the 47 strains tested produced effective nodules on C. desvauxii but none on siratro. Chamaecrista nodules are herein described for the first time in detail: they are indeterminate and structurally similar to others described in the Caesalpinioideae, with infection threads in the invasion and nitrogen fixation zones, and with both infected and uninfected (interstitial) cells in the nitrogen fixation zone. [Mh] Termos MeSH primário: Bradyrhizobium/classificação Bradyrhizobium/isolamento & purificação Chamaecrista/microbiologia Genótipo Nodulação Raízes de Plantas/microbiologia [Mh] Termos MeSH secundário: Bradyrhizobium/genética Brasil Análise por Conglomerados DNA Bacteriano/química DNA Bacteriano/genética DNA Ribossômico/química DNA Ribossômico/genética DNA Espaçador Ribossômico/química DNA Espaçador Ribossômico/genética Genes Essenciais Filogenia RNA Ribossômico 16S/genética Análise de Sequência de DNA Simbiose [Pt] Tipo de publicação: JOURNAL ARTICLE [Nm] Nome de substância: 0 (DNA, Bacterial); 0 (DNA, Ribosomal); 0 (DNA, Ribosomal Spacer); 0 (RNA, Ribosomal, 16S) [Em] Mês de entrada: 1704 [Cu] Atualização por classe: 170403 [Lr] Data última revisão: 170403 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 170118 [St] Status: MEDLINE

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[PMID]: 26033188 [Au] Autor: Wadgymar SM; Cumming MN; Weis AE [Ad] Endereço: Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, ON, M5S3B9, Canada. [Ti] Título: The success of assisted colonization and assisted gene flow depends on phenology. [So] Source: Glob Chang Biol;21(10):3786-99, 2015 Oct. [Is] ISSN: 1365-2486 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: Global warming will jeopardize the persistence and genetic diversity of many species. Assisted colonization, or the movement of species beyond their current range boundary, is a conservation strategy proposed for species with limited dispersal abilities or adaptive potential. However, species that rely on photoperiodic and thermal cues for development may experience conflicting signals if transported across latitudes. Relocating multiple, distinct populations may remedy this quandary by expanding genetic variation and promoting evolutionary responses in the receiving habitat--a strategy known as assisted gene flow. To better inform these policies, we planted seeds from latitudinally distinct populations of the annual legume, Chamaecrista fasciculata, in a potential future colonization site north of its current range boundary. Plants were exposed to ambient or elevated temperatures via infrared heating. We monitored several life history traits and estimated patterns of natural selection to determine the adaptive value of plastic responses. To assess the feasibility of assisted gene flow between phenologically distinct populations, we counted flowers each day and estimated the degree of temporal isolation between populations. Increased temperatures advanced each successive phenological trait more than the last, resulting in a compressed life cycle for all but the southern-most population. Warming altered patterns of selection on flowering onset and vegetative biomass. Population performance was dependent on latitude of origin, with the northern-most population performing best under ambient conditions and the southern-most performing most poorly, even under elevated temperatures. Among-population differences in flowering phenology limited the potential for genetic exchange among the northern- and southern-most populations. All plastic responses to warming were neutral or adaptive; however, photoperiodic constraints will likely necessitate evolutionary responses for long-term persistence, especially when involving populations from disparate latitudes. With strategic planning, our results suggest that assisted colonization and assisted gene flow may be feasible options for preservation. [Mh] Termos MeSH primário: Chamaecrista/fisiologia Fluxo Gênico Aquecimento Global Seleção Genética [Mh] Termos MeSH secundário: Chamaecrista/genética Chamaecrista/crescimento & desenvolvimento Ontário Fenótipo Dispersão Vegetal Estados Unidos [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Em] Mês de entrada: 1606 [Cu] Atualização por classe: 150909 [Lr] Data última revisão: 150909 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 150603 [St] Status: MEDLINE [do] DOI: 10.1111/gcb.12988

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[PMID]: 25425095 [Au] Autor: Seethapathy GS; Ganesh D; Santhosh Kumar JU; Senthilkumar U; Newmaster SG; Ragupathy S; Uma Shaanker R; Ravikanth G [Ad] Endereço: Ashoka Trust for Research in Ecology and the Environment (ATREE), Royal Enclave, Srirampura, Jakkur Post, Bangalore, 560064, India. [Ti] Título: Assessing product adulteration in natural health products for laxative yielding plants, Cassia, Senna, and Chamaecrista, in Southern India using DNA barcoding. [So] Source: Int J Legal Med;129(4):693-700, 2015 Jul. [Is] ISSN: 1437-1596 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Medicinal plants such as Cassia, Senna, and Chamaecrista (belonging to the family Fabaceae) are well known for their laxative properties. They are extensively used within indigenous health care systems in India and several other countries. India exports over 5000 metric tonnes per year of these specific herbal products, and the demand for natural health product market is growing at approximately 10-15% annually. The raw plant material used as active ingredients is almost exclusively sourced from wild populations. Consequently, it is widely suspected that the commercial herbal products claiming to contain these species may be adulterated or contaminated. In this study, we have attempted to assess product authentication and the extent of adulteration in the herbal trade of these species using DNA barcoding. Our method includes four common DNA barcode regions: ITS, matK, rbcL, and psbA-trnH. Analysis of market samples revealed considerable adulteration of herbal products: 50% in the case of Senna auriculata, 37% in Senna tora, and 8% in Senna alexandrina. All herbal products containing Cassia fistula were authentic, while the species under the genus Chamaecrista were not in trade. Our results confirm the suspicion that there is rampant herbal product adulteration in Indian markets. DNA barcodes such as that demonstrated in this study could be effectively used as a regulatory tool to control the adulteration of herbal products and contribute to restoring quality assurance and consumer confidence in natural health products. [Mh] Termos MeSH primário: Cassia/genética Chamaecrista/genética Código de Barras de DNA Taxonômico Contaminação de Medicamentos Fitoterapia Senna (Planta)/genética [Mh] Termos MeSH secundário: DNA de Plantas Seres Humanos Índia Laxantes Plantas Medicinais/genética Controle de Qualidade Análise de Sequência de DNA [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (DNA, Plant); 0 (Laxatives) [Em] Mês de entrada: 1603 [Cu] Atualização por classe: 170928 [Lr] Data última revisão: 170928 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 141127 [St] Status: MEDLINE [do] DOI: 10.1007/s00414-014-1120-z

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[PMID]: 25245262 [Au] Autor: Keller KR [Ad] Endereço: Kellogg Biological Station and Department of Plant Biology, Michigan State University, Hickory Corners, MI, 49060, USA, keller47@msu.edu. [Ti] Título: Mutualistic rhizobia reduce plant diversity and alter community composition. [So] Source: Oecologia;176(4):1101-9, 2014 Dec. [Is] ISSN: 1432-1939 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Mutualistic interactions can be just as important to community dynamics as antagonistic species interactions like competition and predation. Because of their large effects on both abiotic and biotic environmental variables, resource mutualisms, in particular, have the potential to influence plant communities. Moreover, the effects of resource mutualists such as nitrogen-fixing rhizobia on diversity and community composition may be more pronounced in nutrient-limited environments. I experimentally manipulated the presence of rhizobia across a nitrogen gradient in early assembling mesocosm communities with identical starting species composition to test how the classic mutualism between nitrogen-fixing rhizobia and their legume host influence diversity and community composition. After harvest, I assessed changes in α-diversity, community composition, ß-diversity, and ecosystem properties such as inorganic nitrogen availability and productivity as a result of rhizobia and nitrogen availability. The presence of rhizobia decreased plant community diversity, increased community convergence (reduced ß-diversity), altered plant community composition, and increased total community productivity. These community-level effects resulted from rhizobia increasing the competitive dominance of their legume host Chamaecrista fasciculata. Moreover, different non-leguminous species responded both negatively and positively to the presence of rhizobia, indicating that rhizobia are driving both inhibitory and potentially facilitative effects in communities. These findings expand our understanding of plant communities by incorporating the effects of positive symbiotic interactions on plant diversity and composition. In particular, rhizobia that specialize on dominant plants may serve as keystone mutualists in terrestrial plant communities, reducing diversity by more than 40%. [Mh] Termos MeSH primário: Biodiversidade Chamaecrista/microbiologia Ecossistema Nitrogênio/metabolismo Simbiose [Mh] Termos MeSH secundário: Chamaecrista/crescimento & desenvolvimento Chamaecrista/metabolismo Meio Ambiente Plantas/metabolismo Plantas/microbiologia Rhizobium/crescimento & desenvolvimento Rhizobium/metabolismo [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: N762921K75 (Nitrogen) [Em] Mês de entrada: 1509 [Cu] Atualização por classe: 171010 [Lr] Data última revisão: 171010 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 140924 [St] Status: MEDLINE [do] DOI: 10.1007/s00442-014-3089-1

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[PMID]: 24969467 [Au] Autor: Mateos-Martín ML; Fuguet E; Jiménez-Ardón A; Herrero-Uribe L; Tamayo-Castillo G; Torres JL [Ad] Endereço: Institute of Advanced Chemistry of Catalonia (IQAC-CSIC), Jordi Girona 18-26, 08034, Barcelona, Spain. [Ti] Título: Identification of polyphenols from antiviral Chamaecrista nictitans extract using high-resolution LC-ESI-MS/MS. [So] Source: Anal Bioanal Chem;406(22):5501-6, 2014 Sep. [Is] ISSN: 1618-2650 [Cp] País de publicação: Germany [La] Idioma: eng [Ab] Resumo: Chamaecrista nictitans (L) extract possesses antiviral properties; it acts against the herpes simplex virus, and this may be attributed to its constituent phenolics. Here, high-resolution LC-ESI-MS/MS is used to identify the phenolic components of the most potent fraction of the extract. The fraction is a complex mixture rich in oligomeric proanthocyanidins with a high content of monohydroxyphenol moieties ((epi)fisetinidol, (epi)afzelechin and (epi)guibourtinidol) and A-type linkages, uncommon in other proanthocyanidin-rich phenolic extracts, such as those from grape seeds or pine bark. As monohydroxyphenolic structures and A-type linkages have been related to antiviral effects, particularly through the inhibition of late transcription, we suggest that the fraction of C. nictitans extract exerts its action through a particularly effective combination of proanthocyanidins that include these two structural features. [Mh] Termos MeSH primário: Antivirais/química Chamaecrista/química Extratos Vegetais/química Polifenóis/química Proantocianidinas/química [Mh] Termos MeSH secundário: Química Farmacêutica Cromatografia Líquida DNA Viral/química Flavonas/química Flavonoides/química Depuradores de Radicais Livres Herpes Simples/tratamento farmacológico Herpes Simples/prevenção & controle Seres Humanos Fenóis/química Espectrometria de Massas por Ionização por Electrospray Relação Estrutura-Atividade Espectrometria de Massas em Tandem [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 0 (Antiviral Agents); 0 (DNA, Viral); 0 (Flavones); 0 (Flavonoids); 0 (Free Radical Scavengers); 0 (Phenols); 0 (Plant Extracts); 0 (Polyphenols); 0 (Proanthocyanidins); 18206-61-6 (proanthocyanidin); W782YDV47U (afzelechin) [Em] Mês de entrada: 1505 [Cu] Atualização por classe: 171116 [Lr] Data última revisão: 171116 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 140628 [St] Status: MEDLINE [do] DOI: 10.1007/s00216-014-7982-6

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[PMID]: 24026440 [Au] Autor: Almeida NM; Castro CC; Leite AV; Novo RR; Machado IC [Ad] Endereço: Programa de Pós-Graduação em Botânica. [Ti] Título: Floral polymorphism in Chamaecrista flexuosa (Fabaceae-Caesalpinioideae): a possible case of atypical enantiostyly? [So] Source: Ann Bot;112(6):1117-23, 2013 Oct. [Is] ISSN: 1095-8290 [Cp] País de publicação: England [La] Idioma: eng [Ab] Resumo: BACKGROUND AND AIMS: Reciprocal herkogamy, including enantiostyly and heterostyly, involves reciprocity in the relative positions of the sexual elements within the flower. Such systems result in morphologically and, since pollen is deposited on and captured from different parts of the pollinator, functionally distinct floral forms. Deviations from the basic pattern may modify the functionality of these mechanisms. For heterostylous species, such deviations are generally related to environmental disturbances, pollination services and/or reduced numbers of one floral morph. Deviations for enantiostylous species have not yet been reported. This study aims to investigate enantiostyly in Chamaecrista flexuosa, in particular the presence of deviations from the standard form, in an area of coastal vegetation in north-east Brazil. METHODS: Observations and investigations of floral biology, the reproductive system, pollinator behaviour, floral morphology and morphometry were performed. KEY RESULTS: In C. flexuosa flowers, anthers of different size but similar function are grouped. The flowers were self-compatible and set fruits after every treatment, except in the spontaneous self-pollination experiment, thereby indicating their dependence on pollen vectors. The flowers were pollinated by bees, especially Xylocopa cearensis and X. grisencens. Pollen is deposited and captured from the ventral portion of the pollinator's body. Variations in the spatial arrangement of floral elements allowed for the identification of floral morphs based on both morphological and functional criteria. Using morphological criteria, morphologically right (MR) and morphologically left (ML) floral morphs were identified. Three floral morphs were identified using functional criteria: functionally right (FR), functionally central (FC) and functionally left (FL). Combinations of morphologically and functionally defined morphs did not occur in equal proportions. There was a reduced frequency of the MR-FR combination. CONCLUSIONS: The results indicate the occurrence of an atypical enantiostyly in C. flexuosa. This seems to improve reproductive success by increasing the efficiency of pollen deposition and capture. [Mh] Termos MeSH primário: Abelhas/fisiologia Chamaecrista/anatomia & histologia Flores/anatomia & histologia [Mh] Termos MeSH secundário: Animais Comportamento Animal Brasil Cruzamento Chamaecrista/fisiologia Flores/fisiologia Pólen/anatomia & histologia Pólen/fisiologia Polinização/fisiologia Reprodução [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Em] Mês de entrada: 1404 [Cu] Atualização por classe: 170220 [Lr] Data última revisão: 170220 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 130913 [St] Status: MEDLINE [do] DOI: 10.1093/aob/mct188

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[PMID]: 23667586 [Au] Autor: Henson TM; Cory W; Rutter MT [Ad] Endereço: Department of Biology, College of Charleston, Charleston, South Carolina, United States of America. [Ti] Título: Extensive variation in cadmium tolerance and accumulation among populations of Chamaecrista fasciculata. [So] Source: PLoS One;8(5):e63200, 2013. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Plant populations may vary substantially in their tolerance for and accumulation of heavy metals, and assessment of this variability is important when selecting species to use in restoration or phytoremediation projects. We examined the population variation in cadmium tolerance and accumulation in a leguminous pioneer species native to the eastern United States, the partridge pea (Chamaecrista fasciculata). We assayed growth, reproduction and patterns of cadmium accumulation in six populations of C. fasciculata grown on a range of cadmium-contaminated soils. In general, C. fasciculata exhibited tolerance in low to moderate soil cadmium concentrations. Both tolerance and accumulation patterns varied across populations. C. fasciculata exhibited many characteristics of a hyperaccumulator species, with high cadmium uptake in shoots and roots. However, cadmium was excluded from extrafloral nectar. As a legume with tolerance for moderate cadmium contamination, C. fasciculata has potential for phytoremediation. However, our findings also indicate the importance of considering the effects of genetic variation on plant performance when screening plant populations for utilization in remediation and restoration activities. Also, there is potential for cadmium contamination to affect other species through contamination of leaves, fruits, flowers, pollen and root nodules. [Mh] Termos MeSH primário: Adaptação Fisiológica/efeitos dos fármacos Cádmio/toxicidade Chamaecrista/efeitos dos fármacos Chamaecrista/fisiologia [Mh] Termos MeSH secundário: Chamaecrista/crescimento & desenvolvimento Germinação/efeitos dos fármacos Raízes de Plantas/efeitos dos fármacos Raízes de Plantas/fisiologia Brotos de Planta/efeitos dos fármacos Brotos de Planta/fisiologia Reprodução/efeitos dos fármacos [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T [Nm] Nome de substância: 00BH33GNGH (Cadmium) [Em] Mês de entrada: 1312 [Cu] Atualização por classe: 150426 [Lr] Data última revisão: 150426 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 130514 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0063200

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[PMID]: 22919907 [Au] Autor: Stanton-Geddes J; Tiffin P; Shaw RG [Ad] Endereço: Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota 55108, USA. stant067@umn.edu [Ti] Título: Role of climate and competitors in limiting fitness across range edges of an annual plant. [So] Source: Ecology;93(7):1604-13, 2012 Jul. [Is] ISSN: 0012-9658 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: It is often assumed that the geographic distributions of species match their climatic tolerances, but this assumption is not frequently tested. Moreover, few studies examine the relative importance of abiotic and biotic factors for limiting species ranges. We combined multiple approaches to assess the extent to which fitness of a widespread native annual legume, Chamaecrista fasciculata, decreases at and beyond its northern and western range edges, and how this is influenced by the presence of neighbors. First, we examined plant fitness and the effect of neighbors in natural populations at different geographic range locations for three years. Fitness decreased toward the northern range edge, but not the western edge. Neighbor removal had a consistently positive effect on seedpod production across all years and sites. Second, we established experimental populations at sites within the range, and at and beyond the northern and western range edges. We tracked individual fitness and recorded seedling recruitment in the following year (a complete generation) to estimate population growth rate. Individual fitness and population growth declined to near zero beyond both range edges, indicating that C. fasciculata with its present genetic composition will not establish in these regions, given conditions currently. We also carried out a neighbor removal treatment. Consistent with the natural populations, neighbors reduced seedpod production of reproductive adults. However, neighbors also increased early-season survival, and this positive effect early in life history resulted in a net positive effect of neighbors on lifetime fitness at most range locations. Our data show that the population growth rate of C. fasciculata includes values above replacement, and populations are well adapted to conditions up to the edge of the range, whereas the severely compromised fitness at sites beyond the edge precludes immediate establishment of populations and thereby impedes adaptation to these conditions. [Mh] Termos MeSH primário: Chamaecrista/crescimento & desenvolvimento Chamaecrista/fisiologia Clima Aptidão Genética [Mh] Termos MeSH secundário: Demografia Ecossistema Germinação Sementes/crescimento & desenvolvimento Estados Unidos [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S. [Em] Mês de entrada: 1209 [Cu] Atualização por classe: 120827 [Lr] Data última revisão: 120827 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 120828 [St] Status: MEDLINE

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[PMID]: 22615745 [Au] Autor: Stanton-Geddes J; Shaw RG; Tiffin P [Ad] Endereço: Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America. stant067@umn.edu [Ti] Título: Interactions between soil habitat and geographic range location affect plant fitness. [So] Source: PLoS One;7(5):e36015, 2012. [Is] ISSN: 1932-6203 [Cp] País de publicação: United States [La] Idioma: eng [Ab] Resumo: Populations are often found on different habitats at different geographic locations. This habitat shift may be due to biased dispersal, physiological tolerances or biotic interactions. To explore how fitness of the native plant Chamaecrista fasciculata depends on habitat within, at and beyond its range edge, we planted seeds from five populations in two soil substrates at these geographic locations. We found that with reduced competition, lifetime fitness was always greater or equivalent in one habitat type, loam soils, though early-season survival was greater on sand soils. At the range edge, natural populations are typically found on sand soil habitats, which are also less competitive environments. Early-season survival and fitness differed among source populations, and when transplanted beyond the range edge, range edge populations had greater fitness than interior populations. Our results indicate that even when the optimal soil substrate for a species does not change with geographic range location, the realized niche of a species may be restricted to sub-optimal habitats at the range edge because of the combined effects of differences in abiotic and biotic effects (e.g. competitors) between substrates. [Mh] Termos MeSH primário: Chamaecrista/fisiologia Ecossistema Geografia Solo [Pt] Tipo de publicação: JOURNAL ARTICLE; RESEARCH SUPPORT, NON-U.S. GOV'T; RESEARCH SUPPORT, U.S. GOV'T, NON-P.H.S. [Nm] Nome de substância: 0 (Soil) [Em] Mês de entrada: 1209 [Cu] Atualização por classe: 171116 [Lr] Data última revisão: 171116 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 120523 [St] Status: MEDLINE [do] DOI: 10.1371/journal.pone.0036015

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[PMID]: 21755150 [Au] Autor: Oliveira-Rebouças P; Gimenes M [Ad] Endereço: Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana, Feira de Santana, BA, Brazil, 44031-460. [Ti] Título: Potential pollinators of Comolia ovalifolia DC Triana (Melastomataceae) and Chamaecrista ramosa (Vog.) H.S. Irwin and Barneby var. ramosa (Leguminosae-Caesalpinioideae), in restinga, Bahia, Brazil. [So] Source: Braz J Biol;71(2):343-51, 2011 May. [Is] ISSN: 1678-4375 [Cp] País de publicação: Brazil [La] Idioma: eng [Ab] Resumo: Comolia ovalifolia DC Triana (Melastomataceae) and Chamaecrista ramosa (Vog.) H.S. Irwin and Barneby var. ramosa (Leguminosae-Caesalpinioideae) are tropical plant species found in restinga (herbaceous-shrubby, sandy costal ecosystems). They have flowers with poricidal anthers and are pollinated by bees. The study sought to analyse potential pollinators of both plants during visits to their flowers in a restinga area in Bahia. The flowering displayed by both species was considered continuous and long duration, constantly providing pollen to floral visitors. C. ovalifolia was visited by 17 species of bees and C. ramosa by 16 species, predominantly from the Apidae family (with a similarity index of 74%). The behavior displayed by these visiting bees was of vibrating anthers. The small-sized Euglossa sp. Latreille, 1802 and Florilegus similis Urban, 1970 bees played less of a role as pollinators, since they rarely touched the flower stigma during harvests and were thus considered opportunist visitors or casual pollinators. Centris decolorata Lepetier, 1841 (= C. leprieuri) and Xylocopa subcyanea Perez, 1901 are large bees and were considered efficient pollinators of C. ovalifolia and C. ramosa because of the higher frequency and constancy of their visits, and their favourable behaviour and size for pollen transfer between flowers, which guarantees the survival of these native restinga plant species. [Mh] Termos MeSH primário: Abelhas/fisiologia Comportamento Animal/fisiologia Chamaecrista Melastomataceae Polinização/fisiologia [Mh] Termos MeSH secundário: Animais Abelhas/classificação Brasil [Pt] Tipo de publicação: JOURNAL ARTICLE [Em] Mês de entrada: 1201 [Cu] Atualização por classe: 110714 [Lr] Data última revisão: 110714 [Sb] Subgrupo de revista: IM [Da] Data de entrada para processamento: 110715 [St] Status: MEDLINE

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1			PalavrasDescritor de assuntoDescritor de assunto primárioLimitesAutorPalavras do títuloPalavras do resumoIdiomaPaís de publicaçãoNome de substânciaNome de pessoa como assuntoRevistaAssunto de RevistaISSNTipo de publicaçãoIdentificador únicoMês de entradaAno de publicaçãoTexto completoAtualização por classeCategoria DeCSCategoria DeCS explodidaCategoria CID-10SubSetsPais de AfiliaçãoAfiliaçãoAfiliação 2
2	and or and not		PalavrasDescritor de assuntoDescritor de assunto primárioLimitesAutorPalavras do títuloPalavras do resumoIdiomaPaís de publicaçãoNome de substânciaNome de pessoa como assuntoRevistaAssunto de RevistaISSNTipo de publicaçãoIdentificador únicoMês de entradaAno de publicaçãoTexto completoAtualização por classeCategoria DeCSCategoria DeCS explodidaCategoria CID-10SubSetsPais de AfiliaçãoAfiliaçãoAfiliação 2
3	and or and not		PalavrasDescritor de assuntoDescritor de assunto primárioLimitesAutorPalavras do títuloPalavras do resumoIdiomaPaís de publicaçãoNome de substânciaNome de pessoa como assuntoRevistaAssunto de RevistaISSNTipo de publicaçãoIdentificador únicoMês de entradaAno de publicaçãoTexto completoAtualização por classeCategoria DeCSCategoria DeCS explodidaCategoria CID-10SubSetsPais de AfiliaçãoAfiliaçãoAfiliação 2

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