Research Advances of Auxin Signal Transduction

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

Abstract

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

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

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