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The pea DELLA proteins LA and CRY are important regulators of gibberellin synthesis and root growth
Citation
Weston, D and Elliott, RC and Lester, DR and Rameau, C and Reid, JB and Murfet, IC and Ross, JJ, The pea DELLA proteins LA and CRY are important regulators of gibberellin synthesis and root growth, Plant Physiology, 147, (1) pp. 199-205. ISSN 0032-0889 (2008) [Refereed Article]
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Official URL: http://www.plantphysiol.org/
DOI: doi:10.1104/pp.108.115808
Abstract
The theory that bioactive gibberellins (GAs) act as inhibitors of inhibitors of plant growth was based originally on the slender pea
(Pisum sativum) mutant (genotype la cry-s), but the molecular nature of this mutant has remained obscure. Here we show that the
genes LA and CRYencode DELLA proteins, previously characterized in other species (Arabidopsis [Arabidopsis thaliana] and several
grasses) as repressors of growth,which are destabilized byGAs.Mutations la and cry-s encode nonfunctional proteins, accounting for
the fact that la cry-s plants are extremely elongated, or slender. We use the la and cry-s mutations to show that in roots, DELLA
proteins effectively promote the expression ofGAsynthesis genes, aswell as inhibit elongation.We showalso that one of the DELLAregulated
genes is a second member of the pea GA 3-oxidase family, and that this gene appears to play a major role in pea roots.
Item Details
| Item Type: | Refereed Article |
|---|---|
| Research Division: | Biological Sciences |
| Research Group: | Plant Biology |
| Research Field: | Plant Physiology |
| Objective Division: | Plant Production and Plant Primary Products |
| Objective Group: | Horticultural Crops |
| Objective Field: | Horticultural Crops not elsewhere classified |
| UTAS Author: | Weston, D (Mrs Diana Nahodil) |
| UTAS Author: | Elliott, RC (Dr Robert Elliott) |
| UTAS Author: | Lester, DR (Dr Diane Lester) |
| UTAS Author: | Reid, JB (Professor Jim Reid) |
| UTAS Author: | Murfet, IC (Professor Ian Murfet) |
| UTAS Author: | Ross, JJ (Associate Professor John Ross) |
| ID Code: | 55049 |
| Year Published: | 2008 |
| Web of Science® Times Cited: | 46 |
| Deposited By: | Plant Science |
| Deposited On: | 2009-03-04 |
| Last Modified: | 2009-05-18 |
| Downloads: | 352 View Download Statistics |
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