Chinese Bulletin of Botany ›› 2017, Vol. 52 ›› Issue (2): 235-240.DOI: 10.11983/CBB16099

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Advances in Auxin Regulation of Plant Stomatal Development

Yefei Shang, Ming Li, Bo Ding, Hao Niu, Zhenning Yang, Xiaoqiang Chen, Gaoyi Cao, Xiaodong Xie*   

  1. College of Agriculture, Resources and Environmental Sciences, Tianjin Agricultural University, Tianjin 300384, China
  • Received:2016-05-02 Accepted:2016-10-16 Online:2017-03-01 Published:2017-04-05
  • Contact: Xie Xiaodong
  • About author:

    # Co-first authors

Abstract: As pores surrounded by two guard cells on the surface of plants, stomata act as important pathways exchanging water and gas between plants and the external atmosphere. Stomata can also adapt to changes in the environment by affecting the photosynthesis, transpiration and subsequent biological processes in plants. Auxin, the first discovered plant hormone, regulates various developmental processes in plants. Recent studies revealed that auxin is involved in stomatal development by transcription regulation of STOMAGEN via the auxin carrier protein-TIR1/AFB receptor-AUXIN/IAA-ARFs signaling pathway. Eventually, stomatal development is initiated by the STOMAGEN-LRR receptor-like protein kinase ERf-MAPK cascade protein kinase-SPCH signaling pathway. EPF1, EPF2 and the LRR receptor-like protein kinase TMM appear not key components in auxin-regulated stomatal development. Light signaling affects this regulatory process by the E3 ubiquitin ligase COP1 acting upstream of MAPK protein kinases.