Chinese Bulletin of Botany ›› 2016, Vol. 51 ›› Issue (2): 265-273.DOI: 10.11983/CBB15017  cstr: 32102.14.CBB15017

• SPECIAL TOPICS • Previous Articles     Next Articles

Plasma Membrane Positioning Mechanism of Auxin Efflux Carrier PIN Proteins

Wenjie Cao, Guisheng Li*()   

  1. Plant Rescources Protection and Utilization Hunan Province College Key Laboratory, Jishou University, Jishou 416000, China
  • Received:2015-02-12 Accepted:2015-09-06 Online:2016-03-01 Published:2016-03-31
  • Contact: E-mail: guishengl@aliyun.com

Abstract: Auxin concentration affects the morphological establishment of plant body and its organs, while PIN (PIN- FORMED) proteins determine the direction of auxin stream within tissues. The nature of lipid rafts of cellular plasma membrane underlies the uneven distribution of PINs in the plasma membrane. Meanwhile, clathrin-mediated endocytyosis, proteins phosphorylation/dephosphorylation and even genes transcriptional regulation affect this polar location of PINs. Additionally, at the time when multicellular plants emerge, PINs may undergo a transition from endoplasmic reticulum membrane to plasma membrane positioning.

Key words: auxin, PIN, endocytosis, phosphorylation, plant evolution