指蛋白转录因子 ZmZFP69 的功能分析 在玉米播种阶段的低温压力下
Si-Nan Li1, Yan Sun1, Yun-Long Li1
1Maize Research Institute, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China.
Plants (Basel, Switzerland)
|July 30, 2025
概括
鉴定了一种玉米突变,具有增强的低温耐受性. 指蛋白ZmZFP69通过抑制ZmAOX2基因表达和与ZmBG6.6相互作用来负面调节这种耐受性.
科学领域:
- 植物科学 植物科学
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 玉米 (Zea mays L.) 幼苗易受低温的影响,影响产量和质量.
- 了解耐寒性遗传机制对于作物改进至关重要.
研究的目的:
- 研究指蛋白ZmZFP69在玉米低温应激反应中的作用.
- 识别由ZmZFP69.9调节的下游基因和相互作用蛋白.
主要方法:
- 在低温压力下对 zmzfp69突变和对照玉米系进行比较分析.
- 表型,荷尔蒙和转录基因 (RNA-seq) 分析.
- 通过DNA亲和力净化,然后进行测序 (DAP-seq),以确定ZmZFP69的结合位点.
- 蛋白质与蛋白质相互作用测试 (InterProDesign,BiFC,细胞下局部化).
主要成果:
- zmzfp69突变体对低温压力的耐受性得到改善.
- 发现ZmZFP69可以结合ZmAOX2促进体,抑制其表达.
- ZmZFP69与下游蛋白ZmBG6.6相互作用.
结论:
- ZmZFP69作为玉米幼苗低温耐受性的负调节剂.
- 这种调节通过抑制ZmAOX2表达和与ZmBG6.6相互作用而发生.
相关概念视频
02:45Responses to Heat and Cold Stress
13.9K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
13.9K
01:17Gene Regulation During Sporulation
78
Sporulation is a complex developmental process that allows certain Gram-positive bacteria, such as Bacillus subtilis and Clostridium species, to survive extreme environmental conditions. This process is tightly regulated by a series of signaling cascades and transcriptional controls, ensuring the formation of a highly resistant endospore.Sporulation is triggered by unfavorable conditions, such as nutrient depletion, and is governed by a phosphorelay system. One of the sensor kinases, such as...
78