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对转录因子结合部位的综合分析和与米病变相关基因 (OsPR1) 的表达特征分析

Diksha Kumari¹, Bishun Deo Prasad², Padmanabh Dwivedi¹

¹Department of Plant Physiology, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, UP, India.

Frontiers in plant science

|November 11, 2024

概括

这项研究探讨了与米病变相关的 (PR) 1基因,揭示了它们在植物耐压力中起着至关重要的作用. 关键的OsPR1基因被各种压力上调,包括brassinosteroid和热量,突出显示它们增强作物弹性潜力.

科学领域:

植物分子生物学和遗传学.
植物应激生理学和反应机制.

背景情况:

与致病性相关 (PR) 蛋白质对于植物防御生物和非生物压力至关重要.
虽然已有12个大米PR1 (OsPR1) 基因的特征,但许多基因的功能仍未被探索.
众所周知,PR1基因参与了疾病耐药性和应激反应.

研究的目的:

为了对大米的OsPR1基因以及其他植物物种的相关基因进行基因分析.
调查之前未被描述的OsPR1基因的应激反应作用,特别是在brassinosteroid (BR) 和热应激 (HS) 下.
为了识别潜在的OsPR1基因,参与增强大米的耐压力.

主要方法:

使用BLASTP对来自大米,Brachypodium distachyon,Hordeum vulgare,Brassica rapa和Zea mays的OsPR1和相关PR1基因进行了家族遗传学分析.
定量实时PCR (qRT-PCR) 用于在各种压力条件下分析基因表达 (植物激素治疗,受伤,热应激).
在PR1基因促进体中识别保存基因和转录因子结合位 (TFBS).

主要成果:

遗传学分析将OsPR1a和OsPR1-74分组为同一分类,这表明功能保留.
分析了另外11个OsPR1基因,其中几个基因在生物和非生物压力 (热量,干旱,盐度) 下显著上调.
七个OsPR1基因通过类固醇 (EBR) 治疗得到上调,六到七个基因通过热应激 (HS) 得到上调,分别在1h和4h. 特定的基因显示出差异性调节模式.

结论:

OsPR1基因在水应激反应中起着重要作用,特别是对BR和HS的反应.
已识别的OsPR1基因在开发耐压力米品种方面具有潜在的应用.
通过TFBS和保存动机了解PR1基因调节可以帮助作物改进策略.

关键词:

黄铜类固醇 (BR) 是一种富含氨酸的分泌蛋白 (CAP)热应力 (HS) 是一种热应力.与致病发生相关的蛋白1 (PR1)活动主办人活动主办人转录因子结合站点 (TFBS)

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