编码为MIR408的,miPEP408,通过硫同化途径调节应激反应
Ravi Shankar Kumar1, Tapasya Datta2, Hiteshwari Sinha1
1CSIR-National Botanical Research Institute (CSIR-NBRI), Rana Pratap Marg, Lucknow 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
Journal of hazardous materials
|May 1, 2025
概括
由pri-miRNAs (miPEPs) 编码的小调节植物对 (Cd) 压力的反应. 阿拉比多opsis miPEP408调节硫的同化,影响植物对重金属的抵抗力.
科学领域:
- 植物分子生物学 植物分子生物学
- 环境压力反应环境压力反应
背景情况:
- 由pri-miRNAs (miPEPs) 编码的小是已知的植物生长和发育的调节者.
- 它们在植物对环境压力,特别是重金属的反应中的作用在很大程度上是未知的.
研究的目的:
- 为了研究阿拉比多普西斯MIR408编码 (miPEP408) 在 (Cd) 应激反应中的功能.
- 阐明miPEP408影响植物适应重金属压力的分子机制.
主要方法:
- 用外源合成物miPEP408.8.进行测试.
- 在CRISPR/Cas9中介的淘汰突变 (miPEP408CR) 和过度表达线 (miPEP408OX) 的Arabidopsis.
- 在Cd压力下对表型和分子反应的分析,包括基因表达,谷氨水平和Cd积累.
主要成果:
- 外源性miPEP408或miPEP408的过度表达导致谷氨水平降低,抑制了硫同化基因,并增加了Cd敏感性.
- miPEP408CR突变体表现出增强的谷氨水平,高调的硫同化基因,以及改善的Cd排毒.
- miPEP408调节了Cd载体的表达,并影响了植物中的Cd积累.
结论:
- miPEP408是Arabidopsis中Cd应激反应的关键调节者.
- 它通过调节硫同化途径和金属载体基因表达来起作用.
- miPEPs在增强植物对重金属应力的弹性方面发挥着至关重要的作用.
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