Auxin inhibits expansion rate independently of cortical microtubules

Trends Plant Sci. 2015 Aug;20(8):471-2. doi: 10.1016/j.tplants.2015.05.008. Epub 2015 Jun 1.

Abstract

A recent publication announces that auxin inhibits expansion by a mechanism based on the orientation of cortical microtubules. This is a textbook-revising claim, but as I argue here, a claim that is supported by neither the authors' data nor previous research, and is contradicted by a simple experiment.

Keywords: auxin-binding protein 1 (ABP1); growth direction; growth rate; microtubule orientation; tropism.

Publication types

  • Comment

MeSH terms

  • Arabidopsis / cytology*
  • Arabidopsis / metabolism*
  • Indoleacetic Acids / metabolism*
  • Microtubules / metabolism*
  • Plant Proteins / metabolism*
  • Receptors, Cell Surface / metabolism*

Substances

  • Indoleacetic Acids
  • Plant Proteins
  • Receptors, Cell Surface