eCite Digital Repository

Biosynthesis of the halogenated auxin, 4-chloroindole-3-acetic acid

Citation

Tivendale, ND and Davidson, SE and Davies, NW and Smith, JA and Dalmais, M and Bendahmane, AI and Quittenden, LJ and Sutton, L and Bala, RK and Le Signor, C and Thompson, R and Horne, J and Reid, JB and Ross, JJ, Biosynthesis of the halogenated auxin, 4-chloroindole-3-acetic acid, Plant Physiology, 159, (3) pp. 1055-1063. ISSN 0032-0889 (2012) [Refereed Article]


Preview
PDF
Restricted - Request a copy
338Kb
  

Copyright Statement

Copyright 2012 American Society of Plant Biologists

DOI: doi:10.1104/pp.112.198457

Abstract

Seeds of several agriculturally important legumes are rich sources of the only halogenated plant hormone, 4-chloroindole-3- acetic acid. However, the biosynthesis of this auxin is poorly understood. Here, we show that in pea (Pisum sativum) seeds, 4-chloroindole-3-acetic acid is synthesized via the novel intermediate 4-chloroindole-3-pyruvic acid, which is produced from 4-chlorotryptophan by two aminotransferases, TRYPTOPHAN AMINOTRANSFERASE RELATED1 and TRYPTOPHAN AMINOTRANSFERASE RELATED2. We characterize a tar2 mutant, obtained by Targeting Induced Local Lesions in Genomes, the seeds of which contain dramatically reduced 4-chloroindole-3-acetic acid levels as they mature. We also show that the widespread auxin, indole-3-acetic acid, is synthesized by a parallel pathway in pea.

Item Details

Item Type:Refereed Article
Keywords:indole-3-acetic acid, pea, seed, Pisum, auxin, biosynthesis
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Physiology
Objective Division:Expanding Knowledge
Objective Group:Expanding Knowledge
Objective Field:Expanding Knowledge in the Environmental Sciences
Author:Tivendale, ND (Mr Nathan Tivendale)
Author:Davidson, SE (Dr Sandra Davidson)
Author:Davies, NW (Associate Professor Noel Davies)
Author:Smith, JA (Associate Professor Jason Smith)
Author:Quittenden, LJ (Dr Laura Quittenden)
Author:Sutton, L (Ms Joy Sutton)
Author:Bala, RK (Mr Raj Bala)
Author:Horne, J (Dr James Horne)
Author:Reid, JB (Professor Jim Reid)
Author:Ross, JJ (Associate Professor John Ross)
ID Code:78780
Year Published:2012
Web of Science® Times Cited:29
Deposited By:Plant Science
Deposited On:2012-07-25
Last Modified:2013-05-13
Downloads:0

Repository Staff Only: item control page