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Evidence that chlorinated auxin is restricted to the Fabaceae but not to the Fabeae
Citation
Lam, HK and McAdam, SAM and McAdam, EL and Ross, JJ, Evidence that chlorinated auxin is restricted to the Fabaceae but not to the Fabeae, Plant Physiology, 168, (3) pp. 798-803. ISSN 0032-0889 (2015) [Refereed Article]
Copyright Statement
Copyright © 2015 American Society of Plant Biologists
Abstract
Auxin is a pivotal plant hormone, usually occurring in the form of indole-3-acetic acid (IAA). However, in maturing pea (Pisum
sativum) seeds, the level of the chlorinated auxin, 4-chloroindole-3-acetic acid (4-Cl-IAA), greatly exceeds that of IAA. A key issue is
how plants produce halogenated compounds such as 4-Cl-IAA. To better understand this topic, we investigated the distribution of
the chlorinated auxin. We show for the first time, to our knowledge, that 4-Cl-IAA is found in the seeds of Medicago truncatula,
Melilotus indicus, and three species of Trifolium. Furthermore, we found no evidence that Pinus spp. synthesize 4-Cl-IAA in seeds,
contrary to a previous report. The evidence indicates a single evolutionary origin of 4-Cl-IAA synthesis in the Fabaceae, which may
provide an ideal model system to further investigate the action and activity of halogenating enzymes in plants.
Item Details
Item Type: | Refereed Article |
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Keywords: | auxin, evolution, seed development, legumes |
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 biological sciences |
UTAS Author: | Lam, HK (Mr Alvin Lam) |
UTAS Author: | McAdam, SAM (Dr Scott McAdam) |
UTAS Author: | McAdam, EL (Dr Erin McAdam) |
UTAS Author: | Ross, JJ (Associate Professor John Ross) |
ID Code: | 100413 |
Year Published: | 2015 |
Funding Support: | Australian Research Council (DE140100946) |
Web of Science® Times Cited: | 19 |
Deposited By: | Plant Science |
Deposited On: | 2015-05-14 |
Last Modified: | 2017-11-06 |
Downloads: | 0 |
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