MYC2-JAMYB转录级联调节了大米对棕色植物的抗性
Mengyu Liu1, Huijing Li1, Yumeng Chen1
1State Key Laboratory of Rice Biology and Breeding, Zhejiang Key Laboratory of Biology and Ecological Regulation of Crop Pathogens and Insects, Institute of Insect Sciences, Zhejiang University, Hangzhou, 310058, China.
The New phytologist
|April 1, 2025
概括
米植物使用MYC2-JAMYB通路来防御棕色虫 (BPH) 的攻击. JAMYB激活了防御化合物,增强了植物对这种主要害虫的抵抗力.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物与昆虫的相互作用
- 生物化学 生物化学
背景情况:
- 对草食动物的植物防御对于作物保护至关重要.
- 由MYC2转录因子 (TF) 介导的斯酸盐 (JA) 信号传递对植物免疫力至关重要.
- 米中MYC2调节的食草动物耐药性的机制,特别是对棕色植物 (BPH) 的耐药性,需要进一步阐明.
研究的目的:
- 调查JAMYBTF在米中的功能和监管机制.
- 了解JAMYB在JA介导的BPH抵抗中的作用.
- 确定由JAMYB监管的下游目标和途径.
主要方法:
- 棕色 (BPH) 生物测试是在野生类型和突变的米植物上进行的.
- 用转录组分析和向代谢学来分析基因表达和代谢物变化.
- 在目标下切割和标记 (CUT&Tag) 测序被用于识别JAMYB.的直接DNA结合目标.
主要成果:
- JAMYB表达是由BPH诱导的,并由MYC2.2进行转录调节.
- 在JAMYB中发生的突变导致对BPH的敏感性增加,这表明它在耐药性方面发挥了积极作用.
- JAMYB调节了胺和挥发性化合物的生物合成,这些化合物作为直接和间接防御BPH.
结论:
- MYC2-JAMYB模块是JA信号通路的关键组成部分,用于防治BPH的米防御.
- JAMYB直接激活基因通路基因,影响防御代谢物的产生.
- 这项研究阐明了一个关键的监管模块,用于增强大米对主要农业害虫的抵抗力.
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