期刊
PLANT STRESS
卷 3, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.stress.2021.100049
关键词
Cold stress; Molecular network; Herbicide metabolism; Injury; Lipid peroxidation
资金
- National Council for Scientific and Technological Development (CNPq)
- Brazilian Coordination for the Improvement of Higher Education Personnel (CAPES)
- Federal University of Pelotas
- CNPq [310538/2015-7]
- Dra Vivian Ebeling Viana/CAPES Programa Nacional de Pos Doutorado (PNPD)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior -Brasil (CAPES) [001]
Shifting the rice planting date to early spring improves weed control but exposes rice seedlings to cold stress. This study found that low temperature stimulates lipid peroxidation and total phenol accumulation, and also affects herbicide selectivity.
The shifting of rice planting date to early spring improved weed control, which is important to achieve high yield. However, early planting date exposes rice seedlings to cold stress, slowing crop establishment and affecting herbicide selectivity. The objective of this study was determine the effects of cold stress and bispyribac-sodium application on rice seedlings' gene expression and physiological patterns. The experiment was performed in greenhouse in a factorial arrangement, and treatments included: factor A - two planting dates: late September and early November; factor B consisted in bispyribac-sodium application at rate of 50 g ai ha(-1) and untreated check. Bispiribac-sodium caused greatest injury to rice seedlings at the early planting date. Lipid peroxidation and total phenol accumulation was stimulated by low temperature but, was not affected by bispyribac-sodium application. Gene expression of OsSOD, OsCAT, OsAPX, OsDREB1A, OsCDPK13, OsCYP72A2, OsGSTL2 and OsGSTU10 were responsive to low temperature and presented upregulation when exposed to the herbicide, providing evidence of an interaction between temperature and herbicide applications. Cold stress likely affects herbicide metabolism and effect rice seedling e oxidation mechanism response to herbicide.
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