转录因子CpSPL5和CpSPL8通过抑制SOS通路来负面调节Codonopsis pilosula中的盐耐受性
Qianmo Li1, Qianqian Yang1, Shuai Dong1
1Key Laboratory of the Ministry of Education for Medicinal Resources and Natural Pharmaceutical Chemistry, National Engineering Laboratory for Resource Development of Endangered Crude Drugs in Northwest of China, Shaanxi Normal University, Xi'an, China.
The Plant journal : for cell and molecular biology
|December 9, 2024
概括
发现两种Codonopsis pilosula SQUAMOSA促进体结合蛋白类 (SPL) 转录因子CpSPL5和CpSPL8通过抑制植物中的过度敏感盐 (SOS) 途径来负面调节盐耐受性.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 环境压力,包括盐和干旱,大大阻碍了植物的生长.
- SQUAMOSA促进体结合蛋白样 (SPL) 转录因子 (TFs) 是植物过程的关键调节者,但它们在非生物应激反应中的作用尚未得到充分证实.
研究的目的:
- 为了研究两个应激反应的SPLTFs的功能,CpSPL5和CpSPL8,从Codonopsis pilosula作为对盐的应激反应.
- 阐明植物盐耐受路径中CpSPL5和CpSPL8的调节机制.
主要方法:
- 在各种压力条件下对CpSPL5和CpSPL8的基因表达分析 (ABA,NaCl,PEG-6000,高温).
- 在转基因毛发根中进行过度表达和干扰测试,以评估盐应激敏感性和抗氧化酶活性.
- 酵母单杂交和双化酶测试以确定直接向基因和调控相互作用.
主要成果:
- CpSPL5和CpSPL8的表达受到非生物应激和ABA的抑制.
- 过度表达cpspl5或cpspl8会增加盐敏感性,而干扰会增加盐耐受性.
- CpSPL5和CpSPL8直接抑制CpSOS2的表达,这是过度敏感盐 (SOS) 途径的关键组成部分.
结论:
- CpSPL5和CpSPL8作为Codonopsis pilosula中盐耐受性的负调节剂.
- 这些发现揭示了SPL家族成员在植物SOS通路中的新角色,有助于非生物应激反应.
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