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The slender phenotype of pea is deficient in DELLA proteins


Ross, JJ and Reid, JB and Murfet, IC and Weston, D, The slender phenotype of pea is deficient in DELLA proteins, Plant Signaling & Behavior, 3, (8) pp. 590-2. ISSN 1559-2324 (2008) [Refereed Article]

DOI: doi:10.4161/psb.3.8.6224


The recent cloning of the pea genes LA and CRY has historical implications, since the combined effect of null mutations in these genes is the elongated, gibberellin-insensitive "slender" phenotype, which gave rise to the theory that gibberellins (GAs) are inhibitors of inhibitors of growth. Interestingly, the duplication event that produced the second gene (LA or CRY) appears to have occurred more than 100 mya, and yet the two genes have retained essentially similar functions. They both encode DELLA proteins, which inhibit growth while at the same time promoting the synthesis of the growth-promoting hormone, gibberellin (GA). This duality of function is discussed in the context of recent suggestions that DELLAs integrate multiple hormone signals, rather than just the GA signal. We also present new data showing that LA and CRY play a major role in regulating fruit growth.

Item Details

Item Type:Refereed Article
Keywords:DELLA proteins, gibberellin, slender phenotype, pea, elongation
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:Ross, JJ (Associate Professor John Ross)
UTAS Author:Reid, JB (Professor Jim Reid)
UTAS Author:Murfet, IC (Professor Ian Murfet)
UTAS Author:Weston, D (Mrs Diana Nahodil)
ID Code:55051
Year Published:2008
Deposited By:Plant Science
Deposited On:2009-03-04
Last Modified:2010-11-08

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