转录因子CmHSFA4-CmMYBS3复合物通过抑制CmMYB121表达来增强香的盐耐受性
Xinhui Wang1,2, Yue Wang1,2, Yuhan Jiang1,2
1State Key Laboratory of Crop Genetics and Germplasm Enhancement/Key Laboratory of Flower Biology and Germplasm Innovation, Ministry of Agriculture and Rural Affairs/Key Laboratory of Biology of Ornamental Plants in East China, National Forestry and Grassland Administration/College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China.
热冲击因子A4 (CmHSFA4) 通过抑制CmMYB121.1.4提高花的盐耐受性. 一个CmHSFA4-CmMYBS3-CmTPL复合体调节了这个过程,提供了关于植物盐应激反应的见解.
科学领域:
- 植物生物学 植物生物学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 过度的土壤盐度会对植物生长和生存产生负面影响.
- 热冲击因子A4 (CmHSFA4) 此前已被确定可以改善花 (Chrysanthemum morifolium) 的盐耐受性.
- 在CmHSFA4中介盐耐受性背后的分子机制尚未完全理解.
研究的目的:
- 阐明CmHSFA4增强桑树盐分耐受性的分子机制.
- 为了确定参与盐应激反应途径中介的关键调节因素CmHSFA4.4.
- 调查候选MYB转录因子CmMYB121在花对盐应激反应中的作用.
主要方法:
- 鉴定和描述CmMYB121对盐应激的反应.
- 通过CmHSFA4.4对CmMYB121转录调节的分析.
- 研究涉及CmHSFA4,CmMYBS3和CmTPL的蛋白质与蛋白质相互作用.
- 测试以确定CmMYB121过度表达对盐敏感性的影响.
- 对CmMYB121促销物的基因组乙化分析.
主要成果:
- 确定MYB转录因子CmMYB121对盐应激有反应.
- CmHSFA4可以抑制CmMYB121的转录.
- 过度表达CmMYB121增加了花对盐应激的敏感性.
- CmHSFA4 直接与 CmMYB121 促进体结合.
- 一个复杂的CmHSFA4,CmMYBS3 (转录抑制剂) 和CmTPL (核心抑制剂) 通过减少基因素乙化来抑制CmMYB121的转录.
结论:
- 一个涉及CmHSFA4,CmMYBS3和CmTPL的调控复合体调节了CmMYB121的表达.
- 这种复合体在调节花对盐压力的耐受性方面发挥着至关重要的作用.
- 这些发现提供了对植物对盐度反应的更深入的了解.
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