来自Jatropha curcas的GA刺激转录1基因的识别和促进体分析
Shikang Lei1,2, Liangqing Zhao3, Yuqian Chen4
1School of Traditional Chinese Medicine Resource/ Key Laboratory of State Administration of Traditional Chinese Medicine for Production & Development of Cantonese Medicinal Materials, Guangdong Pharmaceutical University, Guangzhou, 510006, China.
Plant cell reports
|June 24, 2023
概括
研究人员在Jatropha curcas中鉴定了JcGAST1,发现其过度表达促进了植物生长,但阻碍了茎的发展. 特定的促进素元素调解对吉伯酸 (GA) 和甲基斯酸 (MeJA) 的反应.
科学领域:
- 植物分子生物学 植物分子生物学
- 植物遗传学 植物遗传学
- 生物化学 生物化学
背景情况:
- 吉伯酸刺激的阿拉比多普西斯 (GASA) 基因家族对植物生长,开花和种子发育至关重要.
- 关于生物燃料作物的重要作物Jatropha curcas中GASA基因的信息有限.
研究的目的:
- 为了识别和描述GASA基因,JcGAST1,来自Jatropha curcas.
- 研究JcGAST1在植物发育和荷尔蒙反应中的功能和调节机制.
主要方法:
- 对JcGAST1.1.的基因鉴定和序列分析.
- 在Jatropha curcas花中的表达分析.
- 在烟草中进行过度表达研究以评估表型效应.
- 激素治疗实验 (GA和MeJA) 来研究基因表达.
- 使用酵母一混合 (Y1H) 查,进行促进体分析以确定cis作用元素和转录因子相互作用.
主要成果:
- 确定了JcGAST1,编码具有保存GASA域的蛋白质,与SlGAST1.1具有很高的相似性.
- 与雄花相比,JcGAST1在雌花中表达和蛋白质水平更高.
- 烟草中JcGAST1的过度表达导致了植物增长的增强,但抑制了的发展.
- JcGAST1的表达是由吉伯酸 (GA) 诱导的,由甲基斯酸 (MeJA) 抑制的.
- 促进器分析显示,金字素盒和CGTCA动机分别是GA和MeJA的关键响应元素.
- 分别确定了6个和3个与胺盒和CGTCA动机相互作用的转录因子.
结论:
- JcGAST1在Jatropha curcas中扮演着双重的角色,促进了植物的整体生长,同时对茎发育产生了负面影响.
- JcGAST1促进体含有关键的cis作用元素 (皮里米丁盒,CGTCA动机),调解对GA和MeJA的反应.
- 了解JcGAST1的功能和调节为Jatropha繁殖和作物改进提供了宝贵的见解.
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