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The slender phenotype of pea is deficient in DELLA proteins

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Ross, JJ and Reid, JB and Murfet, IC and Weston, DE (2008) The slender phenotype of pea is deficient in DELLA proteins. Plant Signaling & Behavior, 3 (8). pp. 590-592. ISSN 1559-2316

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Abstract

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 Type: Article
Keywords: DELLA proteins, gibberellin, slender phenotype, pea, elongation
Journal or Publication Title: Plant Signaling & Behavior
Page Range: pp. 590-592
ISSN: 1559-2316
Date Deposited: 08 Dec 2008 22:27
Last Modified: 18 Nov 2014 03:54
URI: http://eprints.utas.edu.au/id/eprint/8092
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