来自洛卡特的乙烯反应因子EjERF23通过直接调节参与清理过氧化的EjPOD基因促进了耐寒性
Jiaying Zhang1,2, Haishan An1,2, Shuigen Li1,2
1Forestry and Pomology Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai, China.
Plant, cell & environment
|June 16, 2025
概括
像EjERF23这样的乙烯反应因子 (ERF) 增强了植物的寒冷耐受性. EjERF23增强过氧酶活性,减少有害的活性氧物种,以改善抗压能力.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 生物化学 生物化学
背景情况:
- 乙烯反应因子 (ERF) 是植物应激反应的关键调节者.
- 寒冷压力显著影响植物生长和生存,需要对耐受机制的分子理解.
研究的目的:
- 为了验证loquat EjERF23基因,并研究其在寒冷应激耐受性中的作用.
- 阐明EjERF23在植物中赋予寒冷耐受性的分子机制.
主要方法:
- 在冷应力和乙烯处理下对EjERF23的基因表达分析.
- 转基因烟草植物中的EjERF23过度表达.
- 评估抗氧化酶活性 (过氧化酶) 和活性氧物种 (ROS) 水平.
- 酵母单杂交测试以确定促进体相互作用和基因调节.
主要成果:
- EjERF23表达是由冷和乙烯前体诱导的.
- 烟草中EjERF23的过度表达增强了耐寒性,增加了过氧化酶活性并减少了过氧化 (H2O2) 的积累.
- EjERF23直接上调EjPOD47基因,这对寒冷应激反应至关重要.
- 抑制过氧化酶活性会抵消EjERF23.23所赋予的耐寒性.
结论:
- EjERF23是植物耐寒性的关键积极调节剂.
- 通过EjERF23-EjPOD47通路,通过消除ROS,提高耐寒性.
- 这项研究提供了关于植物寒冷应激反应中的乙烯信号的见解.
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