与玉米核热应激反应和耐热性相关的基因和途径
Yan Chen1,2, Tingting Du3, Jie Zhang1
1State Key Laboratory of Crop Gene Resources and Breeding, Institute of Crop Sciences, Chinese Academy of Agricultural Sciences, Beijing, China.
Frontiers in plant science
|September 4, 2023
概括
极端的高温威胁到玉米的生产. 这项研究确定了关键的基因和途径,包括蛋白质加工和拉芬代谢,这对于发展过程中玉米的耐热性至关重要.
科学领域:
- 植物科学 植物科学
- 遗传学 是一个遗传学.
- 生物化学 生化学
背景情况:
- 全球变暖导致极端高温事件,危及玉米生产.
- 玉米核的开发特别容易受到热应激的影响.
- 在玉米杂交系之间存在热耐受性的显著差异.
研究的目的:
- 为了确定基因和途径赋予玉米核中的耐热性.
- 为了比较两个不同耐热度的玉米杂交系中对热应激的转录组反应.
- 为了阐明玉米核耐热性背后的分子机制.
主要方法:
- 在热应力下对两个玉米杂交系 (PF5411-1和LH150) 的转录组分析.
- 鉴定差异表达的基因和转录因子 (TFs).
- 转录组数据与蛋白质和代谢物数据的整合.
主要成果:
- 在热应激下发现了770个常见的上下调节基因.
- 在这两种基因系之间发现了6744个不同调节的基因.
- 四个关键途径 (ER中的蛋白质加工,瑞生物合成,拉芬代谢,乙烯信号) 和七个与耐热性相关的特定基因.
结论:
- 在玉米核中发现了许多对热应激有反应的基因.
- 突出了蛋白质加工在内分泌网膜 (ER) 中的作用,瑞的生物合成,拉芬代谢和乙烯信号在耐热性中的作用.
- 七个特定的基因和四个途径与增强的玉米核耐热性密切相关.
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