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Id: biblio-885710
Autor: Alves, Maxley Martins; Araújo, Lilhian Alves de; Mrué, Fátima; Gomes, Clayson Moura; Oliveira, Milton Adriano Pelli de; Neves, Roberpaulo Anacleto; Silva-Júnior, Nelson Jorge da; Melo-Reis, Paulo Roberto de.
Título: Immunomodulating effects of the purified hev b 13 fraction on septic rats / Efeitos imunomoduladores da fração purificada hev b 13 em ratos com sepse
Fonte: ABCD arq. bras. cir. dig;30(2):93-97, Apr.-June 2017. tab, graf.
Idioma: en.
Resumo: ABSTRACT Background: Sepsis is a potentially life-threatening complication of an infection that occurs when chemicals released into the bloodstream to fight the infection trigger inflammatory responses throughout the body, especially in the acute phase of the disease, producing excessive pro-inflammatory cytokines, leading to multiple organ injury and death. The Hev b 13 fraction has demonstrated biological activity capable of inducing IL-10 production and shrinking inflammatory disease lesions. Aim: To investigate the immunomodulating effects of the Hev b 13 fraction on septic rats. Methods: Acinetobacter baumannii was injected into the peritoneal cavity of the animals after sustaining a lesion in the pancreas, with the stomach as an entry point. After 10 h of infection, they were euthanized for blood and lung collection, followed by total and differential leukocyte count, determination of cytokine level and histopathological analysis. Results: Administering a single dose of the Hev b 13 fraction 2 h after sepsis induction significantly decreased total leukocyte count. Higher IL-10 and IL-4 and lower IL-6 production shrank the lung tissue lesions compared to the control groups. Conclusion: The Hev b 13 fraction exhibits an anti-inflammatory tendency, with potential for sepsis treatment.

RESUMO Racional: Sepse se correlaciona com a ruptura do complexo equilíbrio entre os mediadores inflamatórios, que principalmente na fase aguda da doença, produz exacerbadamente citocinas pró-inflamatórias levando a lesão de múltiplos órgãos e morte. A fração Hev b 13 tem demonstrado atividade biológica capaz de induzir a produção de IL-10 e regredir lesões de doenças inflamatórias. Objetivo: Investigar os efeitos imunomoduladores da fração Hev b 13 em ratos com sepse. Métodos: Foi injetado Acinetobacter baumannii na cavidade peritoneal dos animais após lesão no pâncreas e estômago como porta de entrada. Após 10 h de infecção, foi realizada eutanásia para coleta de sangue e pulmões, em seguida, contagem total e diferencial de leucócitos, dosagem de citocinas e histopatologia para análise. Resultados: A administração de dose única da fração Hev b 13, 2 h após a indução de sepse, diminuiu significativamente a contagem total de leucócitos. Associado a maior produção de IL-10 e IL-4, e menor de IL-6, atenuou as lesões nos tecidos pulmonares em comparação com os grupos controles. Conclusão: A fração Hev b 13 apresenta tendência anti-inflamatória, com potencialidades no tratamento da sepse.
Descritores: Proteínas de Plantas/uso terapêutico
Sepse/terapia
Antígenos de Plantas/uso terapêutico
Imunomodulação
Fitoterapia
-Ratos Wistar
Sepse/imunologia
Limites: Animais
Masculino
Ratos
Responsável: BR1.1 - BIREME


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Id: biblio-1048187
Autor: Jiménez-Guillen, Doribet; Pérez-Pascual, Daniel; Souza-Perera, Ramón; Godoy-Hernández, Gregorio; Zúñiga-Aguilar, José Juan.
Título: Cloning of the Coffea canephora SERK1 promoter and its molecular analysis during the cell-to-embryo transition
Fonte: Electron. j. biotechnol;36:34-46, nov. 2018. tab, ilus.
Idioma: en.
Projeto: Consejo Nacional de Ciencia y Tecnología; . Comisión Intersecretarial de Bioseguridad de los Organismos Genéticamente Modificados; . DJG and DPP received CONACYT Ph.D..
Resumo: Background: Somatic embryogenesis receptor-like kinase 1 (SERK1) is a cell membrane receptor active in different plant tissues and involved in cell differentiation activities including somatic embryogenesis. The identification of promoter elements responsible for SERK1 expression during the onset of somatic embryogenesis can be useful to understand the molecular regulation of the cell-to embryo transition, and these promoter elements represent biotechnological tools in plant organ tissue culture. Results: A −1,620 bp DNA sequence located upstream of the Coffea canephora SERK1 gene homologue (CcSERK1) was isolated, and then, different segments containing key response elements (REs) for somatic embryogenesis onset and development were fused to the uidA (encoding a ß-glucuronidase, GUS) reporter gene to evaluate its expression in transgenic leaf explants. DNA segments of −1,620 and −1048 bp in length directed uidA expression with patterns in leaf explants similar to those occurring during somatic embryogenesis. When a −792-bp fragment was used, uidA expression disappeared only in leaf explants and pro-embryogenic mass but persisted in developing embryos. No uidA expression was detected in any embryogenic stage when a −618-bp fragment was used. Conclusion: DNA deletions showed that a −1048-bp sequence located upstream of the CcSERK1 gene is sufficient to direct gene expression during the onset and the development of C. canephora somatic embryogenesis. The DNA segment located between −1048 and −792 bp (containing BBM and WUS REs) is needed for gene expression before embryogenesis onset but not during embryo development. The promoter segment between −792 and −618 bp (including GATA, ARR1AT, and ANT REs) regulates gene expression in developing embryos.
Descritores: Proteínas de Plantas/genética
Proteínas Quinases/genética
Coffea/genética
-Biotecnologia
Expressão Gênica
Regiões Promotoras Genéticas
Plantas Geneticamente Modificadas
Clonagem Molecular
Genes Reporter
Regulação da Expressão Gênica de Plantas
Desenvolvimento Embrionário
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1177381
Autor: Kironji Githeng'u, Stephen; Ding, Lian; Zhao, Kunkun; Zhao, Wenqian; Chen, Sumei; Jiang, Jiafu; Chen, Fadi.
Título: Ectopic expression of Chrysanthemum CDM19 in Arabidopsis reveals a novel function in carpel development
Fonte: Electron. j. biotechnol;45:10-18, May 15, 2020. tab, ilus, graf.
Idioma: en.
Projeto: National Natural Science Foundation of China; . Natural Science Fund of Jiangsu Province; . China Postdoctoral Science Foundation; . Fundamental Research Funds for the Central Universities.
Resumo: BACKGROUND: APETALA3 (AP3) has significant roles in petal and stamen development in accordance with the classical ABC model. RESULTS: The AP3 homolog, CDM19, from Chrysanthemum morifolium cv. Jinba was cloned and sequenced. Sequence and phylogenetic analyses revealed that CDM19 is of DEF/AP3 lineage possessing the characteristic MIKC-type II structure. Expression analysis showed that CDM19 was transcribed in petals and stamens of ray and disc florets with weak expression in the carpels. Ectopic expression of CDM19 in Arabidopsis wild-type background altered carpel development resulting in multi-carpel siliques. CDM19 could only partially rescue the Arabidopsis ap3­­3 mutant. CONCLUSIONS: Our results suggest that CDM19 may partially be involved in petal and stamen development in addition to having novel function in carpel development.
Descritores: Proteínas de Plantas/fisiologia
Proteínas de Plantas/genética
Arabidopsis/crescimento & desenvolvimento
-Chrysanthemum
Flores/crescimento & desenvolvimento
Expressão Ectópica do Gene
Responsável: CL1.1 - Biblioteca Central


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Texto completo SciELO Chile
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Id: biblio-950803
Autor: Vásquez-Soto, Beatriz; Manríquez, Nicolás; Cruz-Amaya, Mirna; Zouhar, Jan; Raikhel, Natasha V; Norambuena, Lorena.
Título: Sortin2 enhances endocytic trafficking towards the vacuole in Saccharomyces cerevisiae
Fonte: Biol. Res;48:1-11, 2015. ilus, graf, tab.
Idioma: en.
Projeto: FONDECYT.
Resumo: BACKGROUND: A highly regulated trafficking of cargo vesicles in eukaryotes performs protein delivery to a variety of cellular compartments of endomembrane system. The two main routes, the secretory and the endocytic pathways have pivotal functions in uni- and multi-cellular organisms. Protein delivery and targeting includes cargo recognition, vesicle formation and fusion. Developing new tools to modulate protein trafficking allows better understanding the endomembrane system mechanisms and their regulation. The compound Sortin2 has been described as a protein trafficking modulator affecting targeting of the vacuolar protein carboxypeptidase Y (CPY), triggering its secretion in Saccharomyces cerevisiae. RESULTS: A reverse chemical-genetics approach was used to identify key proteins for Sortin2 bioactivity. A genome-wide Sortin2 resistance screen revealed six yeast deletion mutants that do not secrete CPY when grown at Sortin2 condition where the parental strain does: met18, sla1, clc1, dfg10, dpl1 and yjl175w. Integrating mutant phenotype and gene ontology annotation of the corresponding genes and their interactome pointed towards a high representation of genes involved in the endocytic process. In wild type yeast endocytosis towards the vacuole was faster in presence of Sortin2, which further validates the data of the genome-wide screen. This effect of Sortin2 depends on structural features of the molecule, suggesting compound specificity. Sortin2 did not affect endocytic trafficking in Sortin2-resistant mutants, strongly suggesting that the Sortin2 effects on the secretory and endocytic pathways are linked. CONCLUSIONS: Overall, the results reveal that Sortin2 enhances the endocytic transport pathway in Saccharomyces cerevisiae. This cellular effect is most likely at the level where secretory and endocytic pathways are merged. Them Sortin2 specificity over the endomembrane system places it as a powerful biological modulator for cell biology.
Descritores: Proteínas de Plantas/fisiologia
Rodanina/análogos & derivados
Saccharomyces cerevisiae/metabolismo
Vacúolos/metabolismo
Alcanossulfonatos/farmacologia
Transporte Proteico/genética
Endocitose/fisiologia
-Fenótipo
Rodanina/farmacologia
Vacúolos/fisiologia
Transporte Biológico
Via Secretória
Tipo de Publ: Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-1179287
Autor: Patil, Sharanabasappa A.
Título: Studies of dietary phytoestrogen from momordica charantia Linn. Seeds / Estudios de fitoestrógeno en la dieta a partir de semillas de momordica charantia Linn
Fonte: Int. j. med. surg. sci. (Print);7(1):26-33, mar. 2020. graf, ilus.
Idioma: en.
Resumo: Phytoestrogens are secondary plant metabolites produced by plants that are similar in structure of estrogen. Human consumption of these compounds has been associated with many health benefits. In this study, we investigated the potential phytoestrogen content of dietary Momordica charantia Linn. (Bitter melon) seeds were collected from the Hyderabad-Karnataka regions of India. A phenolic dietary phytoestrogen has been isolated from the crude ethanol extract of Bitter melonseeds. After preparative HPLC whitish amorphous compound was yielded. The HPLC purified compound is subjected to spectral analysis using IR, NMR and MS. The spectral data revealed that the phenolphthalein a phytoestrogenic molecule is present in the ethanol extract of dietary Bitter melonseeds.

Los fitoestrógenos son metabolitos vegetales secundarios, producidos por plantas que tienen una estructura similar al estrógeno. El consumo humano de estos compuestos se ha asociado con muchos beneficios para la salud. En este estudio, investigamos el contenido potencial de fitoestrógenos de Momordica charantia Linn en la dieta. Se recolectaron semillas (melón amargo) de las regiones de Hyderabad-Karnataka de la India. Se ha aislado un fitoestrógeno dietético fenólico del extracto de etanol crudo de semillas de melón amargo. Después de HPLC preparativa, se obtuvo un compuesto amorfo blanquecino. El compuesto purificado por HPLC se somete a análisis espectral usando IR, NMR y MS. Los datos espectrales revelaron que la fenolftaleína, una molécula fitoestrogénica, está presente en el extracto etanólico de las semillas de melón amargo en la dieta.
Descritores: Proteínas de Plantas/química
Momordica charantia/química
Fitoestrógenos/química
Responsável: CL61.1 - Biblioteca Central Campus Sur


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Id: biblio-1011416
Autor: Wang, Xinbo; Ren, Yongzhe; Li, Jingjing; Wang, Zhiqiang; Xin, Zeyu; Lin, Tongbao.
Título: Knock-down the expression of TaH2B-7D using virus-induced gene silencing reduces wheat drought tolerance
Fonte: Biol. Res;52:14, 2019. graf.
Idioma: en.
Projeto: National Key Research and Development Program of China; . Natural Science Foundation of Henan province; . State Key Laboratory Program.
Resumo: BACKGROUND: Drought is a major abiotic stress affecting global wheat (Triticum aestivum L.) production. Exploration of drought-tolerant genes is essential for the genetic improvement of drought tolerance in wheat. Previous studies have shown that some histone encoding genes are involved in plant drought tolerance. However, whether the H2B family genes are involved in drought stress response remains unclear. METHODS: Here, we identified a wheat histone H2B family gene, TaH2B-7D, which was significantly up-regulated under drought stress conditions. Virus-induced gene silencing (VIGS) technology was used to further verify the function of TaH2B-7D in wheat drought tolerance. The phenotypic and physiological changes were examined in the TaH2B-7D knock-down plants. RESULTS: In the TaH2B-7D knock-down plants, relative electrolyte leakage rate and malonaldehyde (MDA) content significantly increased, while relative water content (RWC) and proline content significantly decreased compared with those in the non-knocked-down plants under drought stress conditions. TaH2B-7D knock-down plants exhibited severe sagging, wilting and dwarf phenotypes under drought stress conditions, but not in the non-knocked-down plants, suggesting that the former were more sensitive to drought stress. CONCLUSION: These results indicate that TaH2B-7D potentially plays a vital role in conferring drought tolerance in wheat.
Descritores: Proteínas de Plantas/genética
Estresse Fisiológico/genética
Triticum/genética
Regulação da Expressão Gênica de Plantas/genética
Inativação Gênica
Secas
-Fenótipo
Proteínas de Plantas/metabolismo
Estresse Fisiológico/fisiologia
Triticum/metabolismo
Plantas Geneticamente Modificadas/genética
Fenômenos Fisiológicos Vegetais/genética
Reação em Cadeia da Polimerase em Tempo Real
Responsável: CL1.1 - Biblioteca Central


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Id: biblio-886777
Autor: LOVATTO, NAGLEZI M; GOULART, FERNANDA R; LOUREIRO, BRUNO B; SPERONI, CAROLINE S; BENDER, ANA B B; GIACOMINI, SANDRO J; RADÜNZ NETO, JOÃO; SILVA, LEILA P DA.
Título: Crambe (Crambe abyssinica) and sunflower (Helianthus annuus) protein concentrates: production methods and nutritional properties for use in fish feed
Fonte: An. acad. bras. ciênc;89(3,supl):2495-2504, 2017. tab, graf.
Idioma: en.
Resumo: ABSTRACT The purpose of this study was to develop and improve protein concentration techniques for two industrial by-products with the potential for use in fish feed. In particular, we chemically characterized crambe meal and sunflower meal and their protein concentrates. Three different protein concentration methods were tested: isoelectric pH (pHi), acid pH and alkaline pH. For crambe and sunflower meals extraction using the pHi method was most efficient in terms of protein yield and crude protein content in the concentrates; this method also increased lysine and methionine content in the concentrates. The water holding capacity of the sunflower protein concentrate was greater than that of the crambe protein concentrate. The crambe protein concentrate had a foam-formation capacity of 15%, which stabilized at 6% after 90 minutes. The protein concentration method also reduced total phenolic content by approximately 50% in the concentrates compared with the meals. Therefore, we conclude that protein concentration using the pHi method is the most efficient technique for crambe and sunflower meals, and the use of this technique can decrease total phenolic compounds while improving meal quality for fish feeding.
Descritores: Proteínas de Plantas
Crambe (Planta)/química
Peixes
Helianthus/química
Ração Animal
Valor Nutritivo
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-959185
Autor: Silva, Mara Thais de Oliveira; Maia, Mara Andrade Colares; Silva, Michele Dalvina Correia da; Torres, Taffarel Melo; Pereira, José Carlos da Silveira; Araújo, João Ronielly Campêlo; Silva, Ryan Emiliano da; Souza, Anna Lopes da Costa; Barbosa, Tallyson Nogueira; Bezerra, Ana Carla Diógenes Suassuna.
Título: Anthelmintic effect of Cassia fistula and Combretum leprosum protein fractions against goat gastrointestinal nematodes / Efeito antihelmíntico das frações proteicas de Cassia fistula e Combretum leprosum contra nematodeos gastrintestinais de caprinos
Fonte: Rev. bras. parasitol. vet;27(2):237-241, Apr.-June 2018. tab, graf.
Idioma: en.
Resumo: Abstract In this study, we evaluated the ovicidal and larvicidal activity of protein preparations obtained from Cassia fistula L. and Combretum leprosum Mart. leaves on the gastrointestinal parasites of goats. Protein preparations were obtained after the extraction of C. fistula L. and C. leprosum Mart. leaves, followed by protein fractionation (with ammonium sulfate saturation percentages of 30%, 30%-60%, and 60%-90%) and dialysis, which resulted in protein fractions (called F1, F2, and F3, respectively). The fractions were evaluated by egg hatching (the eggs were recovered in stool samples from naturally infected goats) and larval development tests. The results reveled that the inhibition of hatching of eggs caused by the protein fractions of C. fistula (38%) were similar to that of the control drug, thiabendazole. In addition, the fractions of C. fistula caused significant inhibition (61-69%) of larval development also. However, C. leprosum did not reveal significant inhibition of egg hatching and larval development. We conclude that C. fistula L. showed better ovicidal and larvicidal activity against endoparasites.

Resumo Neste estudo, foram avaliadas as atividades ovicida e larvicida de preparações proteicas de Cassia fistula L. e Combretum leprosum Mart. em parasitas gastrointestinais de caprinos. As preparações proteicas foram obtidas por extração das folhas de C. fistula L. e C. leprosum Mart. seguido pelo fracionamento proteico (com porcentagens de saturação de sulfato de amônio de 30%, 30-60%, 60-90%) e diálise, resultando nas frações proteicas (intituladas F1, F2 e F3, respectivamente). As frações foram avaliadas nos testes de eclosão de ovos (os ovos foram recuperados em amostras de fezes de cabras naturalmente infectadas) e de desenvolvimento larvar. Os resultados revelaram que a inibição da eclosão de ovos causada pelas frações proteicas de C. fistula (38%) foi semelhante à do fármaco controle, o tiabendazol. Além disso, as frações de C. fistula também causaram inibição significativa (61-69%) do desenvolvimento larvar. No entanto, C. leprosum não revelou inibição significativa na eclosão dos ovos e no desenvolvimento larvar. Concluiu-se que C. fistula L. mostrou uma melhor atividade ovicida e larvicida contra endoparasitas.
Descritores: Proteínas de Plantas/farmacologia
Estômago/parasitologia
Cabras/parasitologia
Extratos Vegetais/farmacologia
Cassia
Combretum
Intestinos/parasitologia
Nematoides/isolamento & purificação
Nematoides/efeitos dos fármacos
-Óvulo/efeitos dos fármacos
Folhas de Planta
Larva/efeitos dos fármacos
Limites: Animais
Responsável: BR1.1 - BIREME


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Id: biblio-1042513
Autor: Soares, Alexandra Martins dos Santos; Wanderley, Lêdia Feitosa; Costa Junior, Livio Martins.
Título: The potential of plant and fungal proteins in the control of gastrointestinal nematodes from animals / Potencial de proteínas de plantas e fungos no controle de nematoides gastrintestinais de animais
Fonte: Rev. bras. parasitol. vet;28(3):339-345, July-Sept. 2019.
Idioma: en.
Resumo: Abstract Gastrointestinal nematode infection is an important cause of high economic losses in livestock production. Nematode control based on a synthetic chemical approach is considered unsustainable due to the increasing incidence of anthelmintic resistance. Control alternatives such as the use of natural products are therefore becoming relevant from an environmental and economic point of view. Proteins are macromolecules with various properties that can be obtained from a wide range of organisms, including plants and fungi. Proteins belonging to different classes have shown great potential for the control of nematodes. The action of proteins can occur at specific stages of the nematode life cycle, depending on the composition of the external layers of the nematode body and the active site of the protein. Advances in biotechnology have resulted in the emergence of numerous protein and peptide therapeutics; however, few have been discussed with a focus on the control of animal nematodes. Here, we discuss the use of exogenous proteins and peptides in the control of gastrointestinal.

Resumo A infecção por nematoides gastrintestinais é uma importante causa de grandes perdas econômicas na pecuária. O controle de nematoides com compostos químicos sintéticos é considerado insustentável devido ao aumento da resistência anti-helmíntica. Alternativas de controle, como o uso de produtos naturais, estão se tornando relevantes do ponto de vista ambiental e econômico. As proteínas são macromoléculas com várias propriedades que podem ser obtidas de uma ampla gama de organismos, incluindo plantas e fungos. Proteínas pertencentes a diferentes classes têm mostrado grande potencial para o controle de nematoides. A ação das proteínas pode ocorrer em estágios específicos do ciclo de vida do nematoide, dependendo da composição das camadas externas do parasito e do sítio ativo da proteína. Avanços na biotecnologia resultaram no surgimento de numerosas terapias de proteínas e peptídeos; no entanto, pouco foi discutido com foco no controle de nematoides parasitos de animais. Na presente revisão foi discutido o uso de proteínas exógenas e peptídeos no controle de nematoides gastrintestinais, os mecanismos sugeridos de ação, e os desafios e perspectivas para o uso dessas biomoléculas como uma classe de anti-helmínticos.
Descritores: Peptídeos/isolamento & purificação
Proteínas de Plantas/isolamento & purificação
Proteínas Fúngicas/isolamento & purificação
Gastroenteropatias/veterinária
Infecções por Nematoides/veterinária
Antinematódeos/isolamento & purificação
-Peptídeo Hidrolases/administração & dosagem
Peptídeo Hidrolases/isolamento & purificação
Peptídeos/administração & dosagem
Proteínas de Plantas/administração & dosagem
Biotecnologia
Proteínas Fúngicas/administração & dosagem
Quitinases/administração & dosagem
Quitinases/isolamento & purificação
Gastroenteropatias/parasitologia
Infecções por Nematoides/tratamento farmacológico
Antinematódeos/administração & dosagem
Limites: Animais
Tipo de Publ: Revisão
Responsável: BR1.1 - BIREME


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Id: biblio-888738
Autor: Lima, T E; Sartori, A L B; Rodrigues, M L M.
Título: Plant antiherbivore defenses in Fabaceae species of the Chaco / Defesas das plantas anti-herbivoria em espécies de Fabaceae do Chaco
Fonte: Braz. j. biol;77(2):299-303, Apr.-June 2017. tab.
Idioma: en.
Resumo: Abstract The establishment and maintenance of plant species in the Chaco, one of the widest continuous areas of forests in the South American with sharp climatic variations, are possibly related to biological features favoring plants with particular defenses. This study assesses the physical and chemical defenses mechanisms against herbivores of vegetative and reproductive organs. Its analyses of 12 species of Fabaceae (Leguminosae) collected in remnants of Brazilian Chaco shows that 75% present structural defense characters and 50% have chemical defense - defense proteins in their seeds, like protease inhibitors and lectins. Physical defenses occur mainly on branches (78% of the species), leaves (67%), and reproductive organs (56%). The most common physical characters are trichomes and thorns, whose color represents a cryptic character since it does not contrast with the other plant structures. Defense proteins occur in different concentrations and molecular weight classes in the seeds of most species. Protease inhibitors are reported for the first time in seeds of: Albizia niopoides, Anadenanthera colubrina, Mimosa glutinosa, Prosopis rubriflora, and Poincianella pluviosa. The occurrence of physical and chemical defenses in members of Fabaceae indicate no associations between defense characters in these plant species of the Chaco.

Resumo O estabelecimento e a manutenção de espécies no Chaco, uma planície semi-árida da América do Sul com variações climáticas importantes, possivelmente estão relacionados a características biológicas que favorecem as plantas detentoras de defesas particulares. Este estudo teve como objetivos avaliar os mecanismos de defesa física e química anti-herbivoria em órgãos vegetativos e reprodutivos. Analisamos 12 espécies da família Fabaceae (Leguminosae) obtidas em remanescentes de Chaco brasileiro. Observamos que 75% das espécies estudadas apresentam atributo de defesa física e 50% possuem defesa química - proteínas de defesa nas sementes, como inibidores de protease e lectinas. As defesas físicas ocorrem principalmente nos ramos (78% das espécies), nos órgãos reprodutivos (56% das espécies) e nas folhas (67%). Os atributos físicos mais frequentes são tricomas e espinhos, cuja coloração não contrastante com as demais estruturas das plantas representa um caráter críptico. Proteínas de defesa ocorrem nas sementes da maioria das espécies, com diferentes concentrações e classes de pesos moleculares. Inibidores de protease nas sementes estão sendo relatados pela primeira vez em: Albizia niopoides, Anadenanthera colubrina, Mimosa glutinosa, Prosopis rubriflora e Poincianella pluviosa. A ocorrência de defesas física e química entre os membros de Fabaceae indica que não há associações entre as características de defesa das espécies de plantas avaliadas no Chaco.
Descritores: Cadeia Alimentar
Fabaceae/anatomia & histologia
Fabaceae/fisiologia
-Proteínas de Plantas/análise
Sementes/química
Brasil
Herbivoria
Fabaceae/química
Responsável: BR1.1 - BIREME



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BIREME/OPAS/OMS - Centro Latino-Americano e do Caribe de Informação em Ciências da Saúde