Intracellular trafficking and PIN-mediated cell polarity during tropic responses in plants

Hana Rakusová; Matyáš Fendrych; Jiří Friml

doi:10.1016/j.pbi.2014.12.002

Intracellular trafficking and PIN-mediated cell polarity during tropic responses in plants

Curr Opin Plant Biol. 2015 Feb:23:116-23. doi: 10.1016/j.pbi.2014.12.002. Epub 2014 Dec 29.

Authors

Hana Rakusová¹, Matyáš Fendrych², Jiří Friml³

Affiliations

¹ Institute of Science and Technology (IST) Austria, 3400 Klosterneuburg, Austria; Department of Plant Systems Biology, Flanders Institute for Biotechnology (VIB), Ghent University, BE-9052 Ghent, Belgium.
² Institute of Science and Technology (IST) Austria, 3400 Klosterneuburg, Austria.
³ Institute of Science and Technology (IST) Austria, 3400 Klosterneuburg, Austria. Electronic address: jiri.friml@ist.ac.at.

PMID: 25553419
DOI: 10.1016/j.pbi.2014.12.002

Abstract

Subcellular trafficking and cell polarity are basic cellular processes crucial for plant development including tropisms - directional growth responses to environmental stimuli such as light or gravity. Tropisms involve auxin gradient across the stimulated organ that underlies the differential cell elongation and bending. The perception of light or gravity is followed by changes in the polar, cellular distribution of the PIN auxin transporters. Such re-specification of polar trafficking pathways is a part of the mechanism, by which plants adjust their phenotype to environmental changes. Recent genetic and biochemical studies provided the important insights into mechanisms of PIN polarization during tropisms. In this review, we summarize the present state of knowledge on dynamic PIN repolarization and its specific regulations during hypocotyl tropisms.

Publication types

Research Support, Non-U.S. Gov't
Review

MeSH terms

Cell Polarity*
Intracellular Space / metabolism*
Plant Cells / metabolism*
Plant Proteins / metabolism*
Protein Transport
Tropism*

Substances

Plant Proteins