由ABA监管的MAPK信号通路在暴露于下促进了甜菜中的霍尔梅西斯
Xiaoxin Zhao1, Shuoqi Huang2, Qi Yao2
1National Beet Medium-Term Gene Bank, Heilongjiang University, Harbin 150080, China; Key Laboratory of Beet Genetics and Breeding/College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080, China.
Journal of hazardous materials
|September 29, 2024
概括
在暴露下,甜菜表现出hormesis,其特定度增强了生长和关键生理标志物. 这种反应涉及ABA介导的MAPK信号通路和BvPYL9基因,这对植物修复至关重要.
科学领域:
- 植物生理学 植物生理学
- 环境科学 环境科学
- 生物技术是生物技术.
背景情况:
- 甜菜 (Beta vulgaris L.) 是一种潜在的 (Cd) 植物修复能源作物.
- 了解植物对重金属压力的反应对于优化植物修复策略至关重要.
研究的目的:
- 阐明甜菜对 (Cd) 暴露的体内反应策略.
- 为了研究ABA介导的MAPK信号通路和BvPYL9基因在Cd诱导的hormesis中的作用.
主要方法:
- 糖甜菜苗被用不同度的CdCl2 (0,1,3,和5 mmol/L) 处理.
- 进行了转录基因分析 (GO,KEGG,PPI),以确定差异表达的基因.
- 进行了激素含量分析 (ABA) 和基因表达分析 (qRT-PCR).
- 在Arabidopsis thaliana中BvPYL9的过度表达被用来验证基因功能.
主要成果:
- 在3mmol/L CdCl2下观察到一种独特的化效应,改善了生长,叶绿素,可溶性蛋白质和SOD活性,同时降低了MDA含量.
- 转录组分析揭示了DEGs参与脂质代谢,蛋白质代谢和光合作用.
- 在Cd-3治疗下,MAPK信号通路和ABA含量显著上调,BvPYL9被确定为关键基因.
- 在Arabidopsis中BvPYL9的过度表达增强了Cd暴露下的生长和应激耐受性.
结论:
- 由ABA介导的MAPK信号通路激活是对糖中Cd毒性的关键反应.
- BvPYL9在调解Cd诱导的hormesis中发挥着关键作用,突出了其在植物修复策略中的潜力.
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