酸酸调解了类固醇信号传递,以增强黄瓜幼苗的寒冷耐受性
Jiang Yueshan1, Mintao Sun1, Li Yansu1
1State Key Laboratory of Vegetable Biobreeding, Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
Plant physiology and biochemistry : PPB
|January 3, 2024
概括
酸酸盐 (CSN) 通过激活类固醇 (BR) 信号通路来增强黄瓜的寒冷耐受性,从而增加了关键的寒冷反应基因的表达. 用CSN进行预处理显著改善了苗木的生长和在寒冷压力下的弹性.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 寒冷压力 (CS) 严重影响黄瓜产量.
- 酸 (CSN) 在植物寒冷应激反应中的调节作用尚不清楚.
研究的目的:
- 研究CSN和24-epibrassinolide (EBR) 对黄瓜寒冷耐受性的影响.
- 阐明CSN介导的冷反应背后的分子机制,特别是它与BR信号的相互作用.
主要方法:
- 在暴露于寒冷压力之前或之后,黄瓜苗木接受了CSN,EBR或两者的治疗.
- 基因表达分析的重点是BR合成/信号和ICE-CBF-COR通路.
- 在各种条件下评估了幼苗的生长和耐寒性.
主要成果:
- 通过CSN和EBR预处理,提高了苗木的生长和耐寒性.
- 在CSN前处理显著上调BR合成/信号和ICE-CBF-COR基因,在寒冷应激早期的峰值表达.
- 联合CSN+EBR治疗对基因表达产生了协同效应,并改善了受压力的幼苗的恢复.
结论:
- 通过激活BR信号和ICE-CBF-COR通路,CSN提高了黄瓜的寒冷耐受性.
- CSN的有效性取决于植物的压力状态,预处理是有益的.
- 结合CSN和EBR治疗为耐寒性和后压力恢复提供了显著的好处.
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