OsNAC5编排了OsABI5,以微调大米的寒冷耐受性
Ruiqing Li1, Yue Song2,3, Xueqiang Wang2,3
1College of Agronomy, Anhui Agricultural University, Hefei, 230036, China.
Journal of integrative plant biology
|November 16, 2023
概括
米的寒冷耐受性是由OsNAC5增强的,它激活了OsABI5的表达. 这种相互作用调节了对寒冷反应的基因,改善了植物对寒冷压力的反应,并提供了繁殖潜力.
科学领域:
- 植物生物学 植物生物学
- 分子遗传学 分子遗传学
- 压力生理学 压力生理学
背景情况:
- 米 (Oryza sativa) 易受寒冷压力影响,影响作物产量.
- 在米冷应激反应中,OsNAC5的精确机制尚未完全理解.
研究的目的:
- 阐明OsNAC5在调节大米耐寒性的作用.
- 识别OsNAC5介导的冷反应中涉及的下游目标和途径.
主要方法:
- 研究了OsNAC5直接激活阿布西斯酸不敏感5 (OsABI5) 表达的情况.
- 利用哈普类型分析将OsABI5促销物多形态与耐寒性联系起来.
- 采用DNA亲和力净化测序和转录组测序来识别OsABI5目标.
- 进行了体内和体外分析,以确认基因调节.
主要成果:
- OsNAC5直接激活OsABI5的表达,并增强其稳定性,提高米的耐寒性.
- 在OsABI5促进体的NAC结合部位中的多态性与耐寒性相关.
- 确定了包括OsDREB1A,OsMYB20和OsPRX70在内的OsABI5标,这些标对冷反应 (COR) 基因表达至关重要.
- OsNAC5过度表达系显示出COR基因表达的增加,而淘汰突变体显示出表达的减少.
结论:
- OsNAC5通过OsABI5-CORs转录模块来调节大米的耐寒性.
- 这条通路为植物对寒冷压力的反应提供了微调的控制.
- 这些发现有望通过先进的育种策略来改善米的耐寒性.
关键词:
在 ABA 信号传输中.ABI5 ABI5 ABI5 ABI5 ABI5 ABI5 ABI5 ABI5 ABI5 ABI5 ABI5德勒布 (DREBEB) 是一个城市.在NAC5中,它是NAC5.寒冷耐受性 耐寒性 耐寒性米米饭 米饭 米饭 米饭.更多相关视频
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