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Curr Opin Plant Biol. 2013 Oct;16(5):561-8. doi: 10.1016/j.pbi.2013.08.003. Epub 2013 Sep 1.

From perception to attenuation: auxin signalling and responses.

Author information

1
Department of Environmental Science and Technology, University of Maryland, 5138 Plant Science Building, College Park, MD 20742, USA; Department of Plant Science and Landscape Architecture, University of Maryland, 5138 Plant Science Building, College Park, MD 20742, USA. Electronic address: wapeer@umd.edu.

Abstract

The plant hormone auxin is essential for growth, development, and responses to environmental factors. Recently, Auxin Binding Protein 1 was shown to mediate non-transcriptional auxin signalling at the cell periphery. This has provoked reexamination of the paradigm that all auxin perception is intracellular and is mediated by the TIR1/AFB-Aux/IAA co-receptors for which auxin functions as a concentration-dependent molecular glue. Further, another F-box protein, SKP2a, was shown to bind auxin in the same way as TIR1/AFB, which provides a link to the role of auxin in the cell cycle. New work on auxin signalling and homeostasis include D6 PROTEIN KINASE activation of PINFORMED (PIN) auxin carriers, ROP-GTPase mediation of PIN localization, endoplasmic reticulum localization PIN and PIN-LIKES auxin carriers, and auxin biosynthesis and metabolism.

PMID:
24004572
DOI:
10.1016/j.pbi.2013.08.003
[Indexed for MEDLINE]

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