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微RNA编码的调节性调节的耐受性和在米中的积累
Long Lu1,2, Xinyu Chen1, Jiaming Chen1
1Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, College of Agriculture, Fujian Agriculture and Forestry University, Fuzhou, China.
Plant, cell & environment
|January 17, 2024
概括
微胺miPEP156e通过调节microRNA156及其标来增强大米的耐受性. 这种可以减少重金属和反应性氧物种的积累,改善植物在压力下生存.
科学领域:
- 植物分子生物学 植物分子生物学
- 无生物应激反应的应激反应
- 农作物科学 农作物科学
背景情况:
- 微RNAs (miRNAs) 是植物应激反应的关键调节者.
- 主要miRNAs (pri-miRNAs) 可以编码调节性 (miPEPs).
- 米中miPEPs的作用,特别是在重金属应力下,基本上是未知的.
研究的目的:
- 为了识别和描述米中的miPEP.
- 为了研究miPEP156e在对 (Cd) 应激反应中的功能.
- 为了阐明miPEP156e在Cd耐受性中的调节机制.
主要方法:
- 通过 pri-miR156e 来识别miPEP156e.
- 在米中对miPEP156e进行基因操纵 (过度表达和突变).
- 评估Cd吸收,积累和活性氧物种 (ROS) 水平.
- 转录组分析以确定调节的基因.
主要成果:
- miPEP156e 调节 miR156 和 SPL 基因表达,影响 Cd 耐受性.
- 过度表达miPEP156e降低了Cd和ROS的积累,提高了米的Cd耐受性.
- miPEP156e突变体对Cd压力的敏感性增加.
- 转录组数据表明,Cd载体和ROS扫除基因的调制是由miPEP156e.
结论:
- miPEP156e在米的耐受性中起着至关重要的作用.
- 该机制涉及调节miR156,SPL基因,Cd转运器和ROS清理.
- miPEPs代表了增强作物非生物应激耐受性的有希望的途径.
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