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ABA regulation of post-germination desiccation tolerance in wheat cultivars contrasting in drought tolerance Anais da ABC (AABC)
KOUR,SATINDER; ZHAWAR,VIKRAMJIT K..
ABSTRACT Post-germination desiccation tolerance (DT) was studied in two wheat cultivars. Effect of pretreatment of abscisic acid (ABA)/ osmotic/ salt/ heat stress was also studied. One day (d)-old seedlings of wheat cultivars PBW 644 (drought tolerant) and PBW 343 (drought susceptible) were exposed to ABA/stress treatment for next 1 d, desiccated for 4 d and subsequently rehydrated for 4 d. Biomass, protein, water, protein carbonyls (oxidative toxicity) and nitric oxide (NO) levels were measured in 2 d (treated), 6 d (desiccated), 10 d (rehydrated) seedlings. Vegetative reactive oxygen species (ROS)/ NO-pathways were studied under normal condition and ABA supply by supplying ROS/NO scavengers. Desiccation caused water loss and increased oxidative toxicity....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abiotic; Abscisic acid; Nitric oxide; Post germination desiccation tolerance; Wheat.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401493
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AtAREB1 overexpression in cotton enhances water use efficiency but not improve growth in response to mild drought. Repositório Alice
LOBO, A. K. M.; MORGANTE, C. V.; GUILHERME, E. A.; CARVALHO, F. E. L.; ALENCAR, V. T. C. B.; LISEI-DE-SÁ, M. E.; SA, M. F. G. de; SILVEIRA, J. A. G..
Plants have evolved complex mechanisms to cope efficiently with drought. Abscisic acid (ABA)-responsive element binding (AREB) proteins are a family of ABA-dependent transcription factors that control the expression of stress-induced genes to improve drought tolerance. It has been hypothesized that overexpression of AREB1 constitutively active is able to increase plantwater deficit resistance.
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Gossypium hirsutum L; Stress; Algodão; Fotossíntese; Ácido Abscisico; Photosynthesis; Abscisic acid.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1120223
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AtAREB1 overexpression in cotton enhances water use efficiency but not improve growth in response to mild drought. Repositório Alice
LOBO, A. K. M.; MORGANTE, C. V.; GUILHERME, E. A.; CARVALHO, F. E. L.; ALENCAR, V. T. C. B.; LISEI-DE-SÁ, M. E.; SA, M. F. G. de; SILVEIRA, J. A. G..
bitstream/item/209233/1/Anais2XVIICBFV.pdf
Tipo: Resumo em anais de congresso (ALICE) Palavras-chave: Gossypium hirsutum L; Stress; Photosynthesis; Abscisic acid.
Ano: 2019 URL: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1119085
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Can WRKY transcription factors help plants to overcome environmental challenges? Genet. Mol. Biol.
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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Drying and reduction in sensitivity to desiccation of seeds of Alibertia edulis: the influence of fruit ripening stage Anais da ABC (AABC)
CREMON,THAIS; DRESCH,DAIANE M.; SCALON,SILVANA P.Q.; MASETTO,TATHIANA E..
ABSTRACT The intense environmental degradation in tropical regions suitable for agriculture has decreased native forest populations of plants with important fruits and medicinal properties. Alibertia edulis is a native tree from the Brazilian Cerrado. Knowledge about the effects of drying and storage on the physiological behavior of its seeds may aid in its sustainable exploitation and conservation. The goal of the present study was to determine which fruit ripening stage results in A. edulis seeds with higher tolerance to desiccation, and to investigate the effectiveness of polyethylene glycol (PEG) induced osmotic stress in combination with abscisic acid (ABA) in increasing seed desiccation tolerance during storage. Seeds were dried in activated silica...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fast drying; Slow drying; Polyethylene glycol; Abscisic acid; Storage.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000401481
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Effect of abscisic acid, abscisic acid analogues, tetcyclacis and the combination of abscisic acid analogues and tetcyclacis on chilling resistance and transplanting stress in crops International Rice Research Institute
Flores, Ma. Agnes Abad.
117, [7] l. : ill. Thesis (Ph.D.) -- University of Santo Tomas
Tipo: Thesis Palavras-chave: Abscisic acid; Plant growth substances; Drought tolerance; Cold tolerance; Transplanting; Plant physiology; Rice; Zea mays; Cucumbers; Cotton.
Ano: 1989 URL: http://hdl.handle.net/123456789/1152
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Effect of abscisic acid on the mobilisation of galactomannan and embryo development of Sesbania virgata (Cav.) Pers. (Leguminosae - Faboideae) Rev. Bras. Bot.
POTOMATI,ADRIANA; BUCKERIDGE,MARCOS S..
Galactomannans (GM) are storage cell wall polysaccharides present in endospermic seeds of legumes. They are thought to be storage polymers, since it has been observed for a few species (among them Sesbania virgata) that they are completely broken down after germination and their products are transferred to the growing embryo. We examined the effect of 10-4 M abscisic acid (ABA) on the degradation of galactomannan in isolated endosperms and intact seeds of S. virgata. We found that after seed germination the initial embryo growth was retarded. Ultrastructural analysis showed that the embryo is completely surrounded by an endosperm which displays very thick galactomannan-containing cell walls. Although an inhibitory effect has been observed on the increase...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abscisic acid; Galactomannan; Seed; Leguminosae; Storage mobilisation.
Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000300006
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Estudios anatómicos fisiológicos y nutrimentales de semillas de heliconias Colegio de Postgraduados
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...
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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Estudios anatómicos fisiológicos y nutrimentales de semillas de heliconias Colegio de Postgraduados
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...
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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Estudo das famílias gênicas CcPYL, CcPP2C e CcSnRK2: componentes centrais na via aba-dependente para a resposta ao déficit hídrico em Coffea Canephora. Repositório Alice
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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Ethylene and abscisic acid in the control of development of the rhizome of Kohleria eriantha (Benth.) Hanst. (Gesneriaceae) Braz. J. Plant Physiol.
Almeida,Julieta Andrea Silva de; Kascheres,Concetta; Pereira,Maria de Fátima D.A..
Kohleria eriantha has rhizomes which are underground stems with buds enclosed by modified leaves, that store starch. The buds of this rhizome can develop in two morphological patterns: an aerial shoot (similar to the mother plant) or a rhizome, depending on the water level present in the substrate. Development of the shoot was inhibited by low water availability (1 mL) in the substrate. It was verified that ethylene and ABA were involved in controlling the development of the rhizome pattern under low water availability. Treatments with ethrel, PEG and ABA induced shoot development whereas treatments with AgNO3 or AVG inhibited shoot development. Increased ethylene and ABA were observed under conditions that inhibited shoot development. Moreover, it is...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abscisic acid; Buds; Ethylene; Meristem; Rhizome.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000400007
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Eucalyptus ESTs involved in the production of 9-cis epoxycarotenoid dioxygenase, a regulatory enzyme of abscisic acid production Genet. Mol. Biol.
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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Exogenous abscisic acid inhibits the water-loss of postharvest romaine lettuce during storage by inducing stomatal closure Ciênc. Tecnol. Aliment.
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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Expression of rice genes homologous of Arabidopsis genes previously related to drought tolerance. Repositório Alice
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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GA3 and ABI3 gene expression in coffee seeds during maturation. Repositório Alice
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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In vitro and in vivo effects of the phytohormone inhibitor fluridone against Neospora caninum infection OAK
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)....
Palavras-chave: Neospora caninum; Fluridone; Abscisic acid.
Ano: 2016 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/4491
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Interactions between leaf water potential, stomatal conductance and abscisic acid content of orange trees submitted to drought stress Braz. J. Plant Physiol.
Gomes,Mara de Menezes de Assis; Lagôa,Ana Maria Magalhães Andrade; Medina,Camilo Lázaro; Machado,Eduardo Caruso; Machado,Marcos Antônio.
Thirty-month-old 'Pêra' orange trees grafted on 'Rangpur' lemon trees grown in 100 L pots were submitted to water stress by the suspension of irrigation. CO2 assimilation (A), transpiration (E) and stomatal conductance (g s) values declined from the seventh day of stress, although the leaf water potential at 6:00 a.m. (psipd) and at 2:00 p.m. (psi2) began to decline from the fifth day of water deficiency. The CO2 intercellular concentration (Ci) of water-stressed plants increased from the seventh day, reaching a maximum concentration on the day of most severe stress. The carboxylation efficiency, as revealed by the ratio A/Ci was low on this day and did not show the same values of non-stressed plants even after ten days of rewatering. After five days of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Abscisic acid; Citrus sinensis; Gas exchanges; Water stress.
Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000300005
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Network analysis of ABA-dependent and ABA-independent drought responsive genes in Arabidopsis thaliana Genet. Mol. Biol.
Liu,Shiwei; Lv,Zongyou; Liu,Yihui; Li,Ling; Zhang,Lida.
Abstract Drought is one of the most severe abiotic factors restricting plant growth and yield. Numerous genes functioning in drought response are regulated by abscisic acid (ABA) dependent and independent pathways, but knowledge of interplay between the two pathways is still limited. Here, we integrated transcriptome sequencing and network analyses to explore interplays between ABA-dependent and ABA-independent pathways responding to drought stress in Arabidopsis thaliana. We identified 211 ABA-dependent differentially expressed genes (DEGs) and 1,118 ABA-independent DEGs under drought stress. Functional analysis showed that ABA-dependent DEGs were significantly enriched in expected biological processes in response to water deprivation and ABA stimulus,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drought stress; Abscisic acid; RNA-seq; Gene expression; Protein-protein interaction network; Arabidopsis thaliana.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000400624
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Physiological and cytological aspects of Inga vera subsp. affinis embryos during storage Braz. J. Plant Physiol.
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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Plant growth regulators to enhance fruit color of 'Gala' apples PAB
Brighenti,Alberto Fontanella; Würz,Douglas André; Pasa,Mateus da Silveira; Rufato,Leo.
Abstract: The objective of this work was to investigate the effect of plant growth regulators for enhancing fruit color of 'Gala Standard' apples (Malus domestica). The experiment was carried out in the 2015 and 2016 crop seasons. The treatments consisted of water, as a control; 300 mg L-1 ethephon, as a positive control; 400 mg L-1 prohydrojasmonate; and 400 mg L-1 abscisic acid. Flesh firmness, soluble solids content, fruit weight, and red color were assessed after harvest. Plant growth regulators enhanced red color of fruit and chlorophyll degradation. Prohydrojasmonate and abscisic acid did not reduce flesh firmness, in the 2016 season.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Malus domestica; Abscisic acid; Ethephon; Index of absorbance difference; Prohydrojasmonate.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017001101118
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