Auxin transporters and binding proteins at a glance

Peter Grones, Jiří Friml*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

104 Citations (Scopus)

Abstract

The plant hormone auxin is a key regulator of plant growth and development. Differences in auxin distribution within tissues are mediated by the polar auxin transport machinery, and cellular auxin responses occur depending on changes in cellular auxin levels. Multiple receptor systems at the cell surface and in the interior operate to sense and interpret fluctuations in auxin distribution that occur during plant development. Until now, three proteins or protein complexes that can bind auxin have been identified. SCFTIR1 [a SKP1-cullin-1-F-box complex that contains transport inhibitor response 1 (TIR1) as the F-box protein] and S-phase-kinaseassociated protein 2 (SKP2) localize to the nucleus, whereas auxinbinding protein 1 (ABP1), predominantly associates with the endoplasmic reticulum and cell surface. In this Cell Science at a Glance article, we summarize recent discoveries in the field of auxin transport and signaling that have led to the identification of new components of these pathways, as well as their mutual interaction.
Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalJournal of Cell Science
Volume128
Issue number1
DOIs
Publication statusPublished - 2015
Externally publishedYes

Keywords

  • Auxin
  • Signaling
  • Transporters

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