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| Registros recuperados: 28 | |
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| Finatto,Taciane; Viana,Vívian Ebeling; Woyann,Leomar Guilherme; Busanello,Carlos; Maia,Luciano Carlos da; Oliveira,Antonio Costa de. |
| Abstract WRKY transcription factors (TFs) are responsible for the regulation of genes responsive to many plant growth and developmental cues, as well as to biotic and abiotic stresses. The modulation of gene expression by WRKY proteins primarily occurs by DNA binding at specific cis-regulatory elements, the W-box elements, which are short sequences located in the promoter region of certain genes. In addition, their action can occur through interaction with other TFs and the cellular transcription machinery. The current genome sequences available reveal a relatively large number of WRKY genes, reaching hundreds of copies. Recently, functional genomics studies in model plants have enabled the identification of function and mechanism of action of several WRKY... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Transcriptional regulation; Signaling; Abscisic acid; Kinases; Stresses. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400533 |
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| Ferreira,Gisela; De-la-Cruz-Chacón,Ivan; González-Esquinca,Alma Rosa. |
| Abstract Studies on the effect of the applying of phytoregulators to overcome seed dormancy have been carried out in Annonaceae species, thus the endogenous relationship between abscisic acid and gibberellins after the application of phytoregulators needs to be known in these species. Considering the importance of hormonal balance in dormancy mechanisms, the aim of this research was to elucidate how endogenous ABA and GA concentrations change after the application of phytoregulators in seeds and how these changes affect reserve degradation during germination of Annona macroprophyllata and A. purpurea seeds. Seeds were submitted to three conditions: - no soaking, soaking-in-water and soaking-in-GA4+7+benzyladenine. ABA, GA, lipids, proteins, and total... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abscisic acid; Gibberellins; Germination; Lipids; Proteins; Soluble sugars; Plant growth regulators; Phytoregulators. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000602002 |
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| Benítez Domínguez, Lizeth. |
| Las heliconias son especies que desempeñan importantes funciones en los ecosistemas y que tienen un valor comercial alto debido a sus vistosas inflorescencias. Estas especies normalmente se reproducen de manera asexual y su producción se reduce a manejos tradicionales, por lo que existen pocos estudios de sus semillas y del manejo nutrimental de las plantas para elevar su producción. En esta investigación de hicieron estudios anatómicos, fisiológico y nutrimentales de cinco especies de heliconias: Heliconia bourgaeana, H. collinsiana, H. latispatha, H. psittacorum y H. rostrata. Las semillas de estas especies resultaron impermeables al agua. En H. collinsiana y H. latispatha los embriones se encontraron bien desarrollados y sin daños después de un año de... |
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Palavras-chave: Heliconiaceae; Embrión; Endospermo; Ácido abscísico; Nutrimentos; Heliconiaceae; Embryo; Endosperm; Abscisic acid; Nutrients; Maestría; Edafología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/80 |
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| Benítez Domínguez, Lizeth. |
| Las heliconias son especies que desempeñan importantes funciones en los ecosistemas y que tienen un valor comercial alto debido a sus vistosas inflorescencias. Estas especies normalmente se reproducen de manera asexual y su producción se reduce a manejos tradicionales, por lo que existen pocos estudios de sus semillas y del manejo nutrimental de las plantas para elevar su producción. En esta investigación de hicieron estudios anatómicos, fisiológico y nutrimentales de cinco especies de heliconias: Heliconia bourgaeana, H. collinsiana, H. latispatha, H. psittacorum y H. rostrata. Las semillas de estas especies resultaron impermeables al agua. En H. collinsiana y H. latispatha los embriones se encontraron bien desarrollados y sin daños después de un año de... |
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Palavras-chave: Heliconiaceae; Embrión; Endospermo; Ácido abscísico; Nutrimentos; Heliconiaceae; Embryo; Endosperm; Abscisic acid; Nutrients; Maestría; Edafología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/80 |
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| COTTA, M. G.; BOCS, S.; REGO, E. C. S.; COSTA, T. S.; AQUINO, S. O. de; CARNEIRO, F. De A.; THIS, D.; MARRACCINI, P.; ANDRADE, A. C.. |
| O déficit hídrico e altas temperaturas são consequências atuais e diretas do aquecimento global e fatores-chave que afetam o desenvolvimento e a produtividade cafeeira. Apesar das complexas estratégias utilizadas por plantas perenes para adaptarem-se à seca, existe no gênero Coffea variabilidade genética que pode ser utilizada como ferramenta para potencializar a tolerância das plantas a esse estresse. O Ácido abscísico (ABA) é o hormônio central que regula a fisiologia da planta na resposta ao déficit hídrico. O objetivo do presente trabalho foi identificar e caracterizar os genes componentes do sistema tripartite (PYL-PP2C-SnRK2) de percepção e transdução de sinal de ABA em Coffea canephora. Clones tolerantes (14, 73 e 120) de C. canephora Conilon têm... |
| Tipo: Artigo em anais de congresso (ALICE) |
Palavras-chave: Déficit hídrico; PYR/PYL/RCAR; PP2C e SnRK2; Drought; Abscisic acid. |
| Ano: 2015 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1041125 |
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| Guerrini,Iraê A.; Trigueiro,Rodrigo M.; Leite,Regina M.; Wilcken,Carlos F.; Velini,Edivaldo D.; Mori,Edson S.; Furtado,Edson L.; Marino,Celso L.; Maia,Ivan G.. |
| Abscisic acid (ABA) regulates stress responses in plants, and genomic tools can help us to understand the mechanisms involved in that process. FAPESP, a Brazilian research foundation, in association with four private forestry companies, has established the FORESTs database (<A HREF="https://forests.esalq.usp.br">https://forests.esalq.usp.br</A>). A search was carried out in the Eucalyptus expressed sequence tag database to find ESTs involved with 9-cis epoxycarotenoid dioxygenase (NCED), the regulatory enzyme for ABA biosynthesis, using the basic local BLAST alignment tool. We found four clusters (EGEZLV2206B11.g, EGJMWD2252H08.g, EGBFRT3107F10.g, and EGEQFB1200H10.g), which represent similar sequences of the gene that produces NCED. Data... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Eucalyptus EST; Abscisic acid; Water deficit; Drought resistance; NCED. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400020 |
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| LIU,Shuchun; YANG,Ming; ZHAO,Huijie; LI,Hua; SUO,Biao; WANG,Yuexia. |
| Abstract Postharvest lettuce often lose water, thus affecting both its market value and consumer acceptance. However, the mechanism of the water-loss is still waiting well exploration. The aim of the present study was to investigate the effect of a foliar application of ABA on the fresh weight-loss and the chlorophyll content of postharvest lettuce as well as its association with the regulation of stomata. The present data demonstrated that exogenously application of ABA, in a concentration range of 0 to 100 µM, significantly lowered the fresh weight-loss of postharvest lettuce. ABA also delayed chlorophyll reduction during ambient storage, but this protective effect was ABA concentration-dependent. Among the tested ABA concentrations, 50 µM or lower ABA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lettuce; Postharvest; Abscisic acid; Water-loss; Stomatal closure. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-20612015000400729 |
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| ABREU, F. R. M.; DEUS, K. E. de; PEREIRA, W. .J.; SILVEIRA, R. D. D.; VIANELLO, R. P.; BRONDANI, C.. |
| The identification and validation of candidate genes related to traits of interest is a time consuming and expensive process and the homology among genes from different species can facilitate the identification of genes of the target species from the genomic information of a model species. This study aimed to quantify the expression of homologous rice genes previously related to drought tolerance in Arabidopsis. Five genes (CPK6, PLDa, GluR2, CesA8, and EIN2) were identified in rice by the homology of the amino acid sequence between rice and Arabidopsis. The genotypes Douradão (drought tolerant) and Primavera (drought susceptible) were subjected to a water deficit experiment, and subsequently evaluated for gene expression by qPCR for the five homologous... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Gene homology; Arroz; Oryza sativa; Acido abscisico; Rendimento; Rice; Abscisic acid; Quantitative polymerase chain reaction; Yields; Arabidopsis. |
| Ano: 2016 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054691 |
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| SANTOS, F.C. dos; ROSA, S. D. V. F. da; COELHO, S. V. B.; CLEMENTE, A. C. S.; FANTAZZINI, T. B.; PEREIRA, C. C.; CAIXETA, F.; FÁVARIS, N. A. B.; BAÚTE, J. L.. |
| During maturation in seeds, metabolic processes dependent on gene expression are controlled by hormones, including abscisic acid and gibberellin. These hormones determine dormancy or the capacity for germination in seeds and may have different expression levels in the endosperm and embryo of coffee seeds. We quantified gene expression in the biosynthetic pathway of gibberellin and abscisic acid in different parts of Coffea arabica L. seeds in pre and post physiological maturity, in order to better understand the germination mechanisms of this species. Coffee fruits were harvested at green, yellowish-green, cherry, over-ripe and dry stages. For studies of gene expression, intact seeds were used in addition to endosperm and isolated embryos. The RNA from... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: QRT-PCR; Coffea Arábica; Gibberellic acid; Abscisic acid. |
| Ano: 2019 |
URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1114204 |
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| Ybañez, Rochelle Haidee D.; Leesombun, Arpron; Nishimura, Maki; Matsubara, Ryuma; Kojima, Mikiko; Sakakibara, Hitoshi; Nagamune, Kisaburo; Nishikawa, Yoshifumi. |
| Neospora caninum causes abortion and stillbirth in cattle. Identification of effective drugs against this parasite remains a challenge. Previous studies have suggested that disruption of abscisic acid (ABA)-mediated signaling in apicomplexan parasites such as Toxoplasma gondii offers a new drug target. In this study, the ABA inhibitor, fluridone (FLU), was evaluated for its action against N. caninum. Production of endogenous ABA within N. caninum was confirmed by ultra-performance liquid chromatography-tandem quadruple mass spectrometry. Subsequently, FLU treatment efficacy was assessed using in vitro. Results revealed that FLU inhibited the growth of N. caninum and T. gondii in vitro (IC50 143.1 +/- 43.96 mu M and 330.6 +/- 5238 mu M, respectively).... |
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Palavras-chave: Neospora caninum; Fluridone; Abscisic acid. |
| Ano: 2016 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4491 |
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| Faria,José M.R.; Davide,Lisete C.; Silva,Edvaldo A. A. da; Davide,Antonio C.; Pereira,Roselaine C.; van Lammeren,André A.M.; Hilhorst,Henk W.M.. |
| The remarkably short storability of recalcitrant seeds has prevented their inclusion in programs of ex situ conservation. The causes of their desiccation sensitivity and rapid decline in viability during storage are not fully elucidated yet. In this study the highly recalcitrant, fully viable embryos of the tree species Inga vera subsp. affinis were stored under various conditions and analyzed physiologically and cytologically at intervals, in order to obtain more insights in their loss of viability during storage. Embryos stored fully hydrated at 5ºC fully lost viability in 18 d. Sealed storage of partially dehydrated embryos slightly prolonged their viability, with 95% germination being attained after 14 d of storage. However, after 30 d of storage,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Abscisic acid; Polyethylene glycol; Recalcitrant seeds; Seed conservation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202006000400008 |
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| Registros recuperados: 28 | |
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