COMPORTAMENTO DE PLANTAS DE ARROZ SUPEREXPRESSANDO O GENE OsEF2 SOB SECA SIMULADA POR POLIETILENOGLICOL
COMPORTAMENTO DE PLANTAS DE ARROZ SUPEREXPRESSANDO O GENE OsEF2 SOB SECA SIMULADA POR POLIETILENOGLICOL
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Palavras-chave: adaptabilidade produtiva; biotecnologia de plantas; estresse hídrico; organismos geneticamente modificados.
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Keywords: drought stress; genetically modified organisms; productive adaptability; plant biotechnology.
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Abstract: Rice production is threatened by the worsening global climate crisis, and with the increasing demand for food, finding ways to ensure its production is essential. With this in mind, this research aimed to assess the response of plants overexpressing OsEF2, a gene potentially related to drought tolerance, in polyethylene glycol (PEG) solution at different concentrations. For this, F1 generation lines following a 3:1 segregation were grown to produce the F2 generation, where a relative expression analysis of the target gene was performed, and two transformed plant lines, EF18 and EF19, were selected. Subsequently, two experiments were conducted: the first involved these two lines and an unedited line (WT) exposed to severe drought simulation (PEG 30%) and non-water-stressed conditions (control). The second experiment was conducted with the same lines but exposed to moderate drought simulation (PEG 20%) and the control. In both experiments, relative water content and electrolyte leakage from the leaves were analyzed. The different lines exhibited distinct behavior compared to WT plants when subjected to PEG, but they still did not show superior results to the WT plants. The overexpression of the Elongation Factor 2 gene, in rice plants, did not confer drought tolerance when different concentrations of polyethylene glycol (PEG) were applied.
- Everaldo Zonta
- Castro Alves da Silva Junior
- André Luis da Silva Parente Noguiera
- Clenya Carla Leandro de Oliveira
- José Nivaldo de Oliveira Sátiro
- Maria Eduarda Pimentel de Melo
- Leandro Azevedo Santos