期刊文献+

MYB转录因子在调控植物响应逆境胁迫中的作用

Roles of MYB Transcription Factor in Regulating the Responses of Plants to Stress
下载PDF
导出
摘要 MYB作为植物中最大的多功能转录因子(transcription factors,TFs)家族之一,在基因转录水平上广泛地参与调控植物生长发育、激素信号转导及逆境胁迫应答等过程。该类转录因子N端含有典型的MYB结构域,根据MYB结构域中R重复序列的数量分为不同的亚组;而C端结构域差异较大,因此功能上具有多样性。大量研究表明,在受到外界环境信号的激活后,MYB可单独或通过和其他蛋白互作后,与下游靶基因启动子区域的顺式作用元件MYBCORE和AC-box结合,参与调控下游胁迫应答相关基因的表达,从而调节植物对逆境胁迫的耐受性。另外,MYB也通过参与脱落酸(abscisic acid,ABA)、油菜素内酯(brassinolide,BR)、茉莉酸(jasmonic acid,JA)和活性氧(reactive oxygen species,ROS)等信号通路的方式,对非生物胁迫以及生物胁迫做出应答反应。论文对植物MYB家族的结构与分类及其作用方式进行了归纳,重点对植物MYB参与调控响应盐、干旱、极端温度、营养亏缺、重金属以及病原菌等非生物和生物逆境胁迫的作用机制进行了综述,并对未来重点研究方向提出了展望,为今后农作物的抗逆性遗传改良和生物育种提供优异基因资源和理论支持。 MYB is one of the biggest multifunctional transcription factors(TFs)families in plants.It is widely involved in regulating multiple process at the transcription level,including plant growth and development,signal transduction of various phyhormones and response to abiotic and biotic stresses.The N-terminal of MYB contained a typical MYB domain,which is divided into different subgroups according to the number of R repeats in the domain.However,the C-terminal domain is very different,thus it is functionally diverse.Many studies have been shown that MYB can bind to the downstream target gene promoter cis-acting elements MYBCORE and AC-box alone or through interaction with other proteins after being activated by environmental signals,and participate in regulating the expressions of downstream target genes,thereby regulating plant tolerances to stresses.Additionally,MYB responded to abiotic and biotic stresses by regulating signaling pathways such as abscisic acid(ABA),brassinolide(BR),jasmonic acid(JA)and reactive oxygen species(ROS).In this review,the structure,classification,and action type of the MYB families in plants were summarized,and the regulatory mechanisms of MYB in the response to abiotic and biotic stresses such as salt,drought,extreme temperature,nutrient deficiency,heavy metals,and pathogenic bacteria,were mainly reviewed.The key direction of future studies were also prospected.This paper may provide genetic resources and theoretical support for genetic improvement of stress resistance of crops and biological breeding in the future.
作者 胡雅丹 伍国强 刘晨 魏明 HU Ya-dan;WU Guo-qiang;LIU Chen;WEI Ming(School of Life Science and Engineering,Lanzhou University of Technology,Lanzhou 730050;Technology R&D Center,Gansu Tobacco Industry Co.,Ltd.,Lanzhou 730050)
出处 《生物技术通报》 CAS CSCD 北大核心 2024年第6期5-22,共18页 Biotechnology Bulletin
基金 国家自然科学基金项目(32360483,32160466) 甘肃省自然科学基金重点项目(23JRRA764)。
关键词 MYB转录因子 转录调控 DNA结合结构域 非生物胁迫 生物胁迫 抗逆性 基因表达 蛋白互作 MYB transcription factors transcriptional regulation DNA-binding domain abiotic stress biotic stress resistance to stress gene expression protein interaction
  • 相关文献

参考文献14

二级参考文献108

共引文献317

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部