| Registro completo |
| Provedor de dados: |
Planta Daninha
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| País: |
Brazil
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| Título: |
Physiological and Molecular Responses in Rice, Weedy Rice and Barnyardgrass Exposed to Supra-Optimal Temperatures
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| Autores: |
OLIVEIRA,C.
AGOSTINETTO,D.
LANGARO,A.C.
GARCIA,J.R.
LAMEGO,F.P.
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| Data: |
2019-01-01
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| Ano: |
2019
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| Palavras-chave: |
Oryza sativa
Echinochloa spp.
Photosynthesis
Oxidative stress
Gene expression
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| Resumo: |
ABSTRACT: The global temperature to rise 0.3 to 4.8 oC to century. Supra-optimal temperatures can affect plants at different organizational levels, causing morphological, physiological, biochemical and gene expression alterations. Rice, weedy rice, and barnyardgrass may to response differently when subjected to supra-optimal temperatures. Thus, the aimed at determining the physiological response and expression of the genes APX2, HSP24.15 e HSP71.10 in rice, weedy rice, and barnyardgrass when in to supra-optimal temperatures. A greenhouse experiment was conducted in randomized complete desing with four repetitions, with a factorial combination of temperature x plantas, where: factor A consisted of two temperatures (25 oC and 40 oC); and factor B of three plants [rice (Oryza sativa cv. Puitá INTA-CL), weedy rice (Oryza spp.), and barnyardgrass (Echinochloa spp.)]. The 40 oC temperature, in general, caused a reduction in the photosynthesis parameters and in the protein content, and increased the oxidative stress in C3 plants; no damage was observed in the C4 plant subjected to this temperature. In response to the supra-optimal temperatures, rice and weedy rice increased of APX and SOD activity and the expression of OsAPX2, OsHSP24.15 and OsHSP71.10 genes. Barnyardgrass exposed to supra-optimal temperature do not modify the activity of its antioxidant system and increased the OsHSP71.10 gene expression.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100239
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| Editor: |
Sociedade Brasileira da Ciência das Plantas Daninhas
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| Relação: |
10.1590/s0100-83582019370100040
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| Formato: |
text/html
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| Fonte: |
Planta Daninha v.37 2019
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| Direitos: |
info:eu-repo/semantics/openAccess
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