在Vitis quinquangularis中对Al和flg22的应力耐受性的替代拼接分析
Qian Yao1, Ruiwei Duan1, Yang Feng1
1Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Sciences, Northwest University, Xi'an, 710069, China.
Planta
|May 14, 2025
概括
这项研究揭示了葡萄树的替代拼接如何应对和鞭22压力,确定了植物防御和抗压力的关键基因. 这些发现提供了关于葡萄藤适应和繁殖的见解,以改善耐压力.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 基因组学就是基因组学.
背景情况:
- 替代拼接 (AS) 是一个关键的转录后调节过程,影响植物对环境压力的反应.
- 葡萄藤 (Vitis quinquangularis) 对 (Al) 和鞭22 (flg22) 应力防御机制中AS的作用尚不清楚.
研究的目的:
- 通过Al和flg22处理,研究中国野生葡萄树的替代拼接事件.
- 确定差异替代拼接基因 (DASG) 和它们在应激反应中的功能.
- 为了验证关键的AS基因参与葡萄藤应激耐受性.
主要方法:
- 在Al和flg22处理之前和之后,葡萄叶的转录组测序.
- 识别和分析替代拼接事件,重点关注跳过的外型子 (SE) 事件.
- 差异基因表达分析和功能丰富分析 (例如,谷氨代谢,MAPK信号传递).
- 使用RT-qPCR验证所选的DASG.
主要成果:
- 在Al治疗中共发现了11,805例AS事件,在flg22治疗中发现了9,156例AS事件,其中SE是最常见的类型.
- 在12小时后,在接受Al治疗的葡萄树中发现了42个DASG,在接受flg22治疗的葡萄树中发现了147个DASG.
- 功能分析显示,在AL治疗和MAPK信号传递/植物激素信号转导中,氨酸代谢的丰富作用,用于flg22治疗.
- 七个与耐药性相关的DASG在Al压力下被验证具有上调表达,四个SR蛋白在两种压力下都被上调.
结论:
- 替代拼接在葡萄藤对Al和flg22压力的反应中起着重要作用.
- 确定了与抗压力和拼接因子相关的关键基因,为葡萄藤育种提供了候选人.
- 这项研究增强了对葡萄酒环境适应和耐压力机制的理解.
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