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Registro Completo |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
15/09/2014 |
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Data da última atualização: |
13/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
REIS, R. R.; DIAS, B. B. A.; MARTINS, P. K.; MARTINS, M. T. B.; ALEKCEVETCH, J. C.; JÚNIOR, A. C.; ANDRADE, A. C.; RIBEIRO, A. P.; QIND, F.; MIZOI, J.; SHINOZAKI, K. I.; NAKASHIMA, K.; CARVALHO, J. de F. C.; SOUSA, C. A. F. de; NEPOMUCENO, A. L.; KOBAYASHI, A. K.; MOLINARI, H. B. C. |
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Afiliação: |
Rafaela Ribeiro Reis, Universidade Federal de Lavras; BARBARA ANDRADE DIAS BRITO DA CUNHA, CNPAE; Polyana Kelly Martins; Maria Thereza Bazzo Martins; Jean Carlos Alekcevetch, Universidade Federal de Lavras; Antônio Chalfun-Júnior, Universidade Federal de Lavras; ALAN CARVALHO ANDRADE, CENARGEN; Ana Paula Ribeiro, Universidade Federal de Lavras; Feng Qind, Chinese Academy of Sciences; Junya Mizoi, The University of Tokyo; Kazuko Yamaguchi-Shinozaki, The University of Tokyo; Kazuo Nakashima, Chinese Academy of Sciences; Josirley de Fátima Corrêa Carvalho; CARLOS ANTONIO FERREIRA DE SOUSA, CNPAE; ALEXANDRE LIMA NEPOMUCENO, SRI; ADILSON KENJI KOBAYASHI, CNPAE; HUGO BRUNO CORREA MOLINARI, CNPAE. |
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Título: |
Induced over-expression of AtDREB2A CA improves drought tolerance in sugarcane. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
Plant Science, v. 221-222, p. 59-68, 2014. |
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Idioma: |
Inglês |
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Conteúdo: |
tDrought is one of the most challenging agricultural issues limiting sustainable sugarcane production and,in some cases, yield losses caused by drought are nearly 50%. DREB proteins play vital regulatory rolesin abiotic stress responses in plants. The transcription factor DREB2A interacts with a cis-acting DREsequence to activate the expression of downstream genes that are involved in drought-, salt- and heat-stress response in Arabidopsis thaliana. In the present study, we evaluated the effects of stress-inducibleover-expression of AtDREB2A CA on gene expression, leaf water potential (L), relative water content(RWC), sucrose content and gas exchanges of sugarcane plants submitted to a four-days water deficittreatment in a rhizotron-grown root system. The plants were also phenotyped by scanning the roots andmeasuring morphological parameters of the shoot. The stress-inducible expression of AtDREB2A CA intransgenic sugarcane led to the up-regulation of genes involved in plant response to drought stress. Thetransgenic plants maintained higher RWC and Lover 4 days after withholding water and had higherphotosynthetic rates until the 3rd day of water-deficit. Induced expression of AtDREB2A CA in sugarcaneincreased sucrose levels and improved bud sprouting of the transgenic plants. Our results indicate thatinduced expression of AtDREB2A CA in sugarcane enhanced its drought tolerance without biomass penalty. |
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Palavras-Chave: |
AtDREB2A CA; Saccharum spp; Transcription factor. |
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Thesaurus Nal: |
abiotic stress. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02429naa a2200361 a 4500
001 1994907
005 2023-03-13
008 2014 bl uuuu u00u1 u #d
100 1 $aREIS, R. R.
245 $aInduced over-expression of AtDREB2A CA improves drought tolerance in sugarcane.$h[electronic resource]
260 $c2014
520 $atDrought is one of the most challenging agricultural issues limiting sustainable sugarcane production and,in some cases, yield losses caused by drought are nearly 50%. DREB proteins play vital regulatory rolesin abiotic stress responses in plants. The transcription factor DREB2A interacts with a cis-acting DREsequence to activate the expression of downstream genes that are involved in drought-, salt- and heat-stress response in Arabidopsis thaliana. In the present study, we evaluated the effects of stress-inducibleover-expression of AtDREB2A CA on gene expression, leaf water potential (L), relative water content(RWC), sucrose content and gas exchanges of sugarcane plants submitted to a four-days water deficittreatment in a rhizotron-grown root system. The plants were also phenotyped by scanning the roots andmeasuring morphological parameters of the shoot. The stress-inducible expression of AtDREB2A CA intransgenic sugarcane led to the up-regulation of genes involved in plant response to drought stress. Thetransgenic plants maintained higher RWC and Lover 4 days after withholding water and had higherphotosynthetic rates until the 3rd day of water-deficit. Induced expression of AtDREB2A CA in sugarcaneincreased sucrose levels and improved bud sprouting of the transgenic plants. Our results indicate thatinduced expression of AtDREB2A CA in sugarcane enhanced its drought tolerance without biomass penalty.
650 $aabiotic stress
653 $aAtDREB2A CA
653 $aSaccharum spp
653 $aTranscription factor
700 1 $aDIAS, B. B. A.
700 1 $aMARTINS, P. K.
700 1 $aMARTINS, M. T. B.
700 1 $aALEKCEVETCH, J. C.
700 1 $aJÚNIOR, A. C.
700 1 $aANDRADE, A. C.
700 1 $aRIBEIRO, A. P.
700 1 $aQIND, F.
700 1 $aMIZOI, J.
700 1 $aSHINOZAKI, K. I.
700 1 $aNAKASHIMA, K.
700 1 $aCARVALHO, J. de F. C.
700 1 $aSOUSA, C. A. F. de
700 1 $aNEPOMUCENO, A. L.
700 1 $aKOBAYASHI, A. K.
700 1 $aMOLINARI, H. B. C.
773 $tPlant Science$gv. 221-222, p. 59-68, 2014.
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