生长素信号转导研究进展

doi:10.13560/j.cnki.biotech.bull.1985.2018-0488

摘要/Abstract

摘要： 植物激素生长素影响植物生长中几乎所有的方面,包括植物细胞的生长、分裂和分化,以及植物从胚胎发育到生殖发育的各个过程中。生长素的研究主要围绕合成与代谢、运输和信号转导而展开。植物细胞对生长素的响应和信号转导主要通过细胞核内的TIR1/AFB-Aux/IAA-ARF信号通路来完成。另外,细胞表面起始的信号通路主要调控生长素的快速响应,而SKP2A通路介导了生长素对细胞周期的调控。概述了三条生长素信号转导通路目前的研究进展,并介绍了生长素信号转导中具体的研究工具。基于该领域的研究现状,提出了生长素信号转导方面有待进一步研究的方向,包括TIR1/AFB-Aux/IAA-ARF复合体的调控机制研究、生长素调控冠部和根部生长的差异性研究、以及对细胞表面起始信号途径的进一步探索。

关键词: 生长素, 信号转导, 转录调控, 快速响应

Abstract: The phytohormone auxin plays a crucial role in almost every aspect of plant growth and development. The function of auxin ranges from cell expansion,cell division,to cell differentiation,as well as the biological processes from embryogenesis to reproduction. The auxin research is focused on three aspects：auxin synthesis and metabolism,auxin polar transport,and auxin signal transduction. Auxin response is mainly mediated by the nuclear TIR1/AFB-Aux/IAA-ARF signaling network. Besides,some fast auxin responses are regulated by a supposed cell surface initiated auxin signaling pathway. A SKP2A pathway has been identified to regulate cell cycle. In this review,we summarized the progress on auxin signal transduction pathways,as well as introduced the research tools for the auxin signaling transduction studies. We proposed the future directions for auxin signal transduction studies,including the regulation of TIR1/AFB-Aux/IAA-ARF complex,the differential auxin modulation in shoot and root,and the auxin signaling on the plasma membrane.

Key words: auxin, signal transduction, transcriptional regulation, rapid response

冯寒骞, 李超. 生长素信号转导研究进展[J]. 生物技术通报, 2018, 34(7): 24-30.

FENG Han-qian, LI Chao. Research Advances of Auxin Signal Transduction[J]. Biotechnology Bulletin, 2018, 34(7): 24-30.

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