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Feed-forward regulation of gibberellin deactivation in pea


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Elliott, RC, Ross, JJ, Smith, JJ, Lester, DR and Reid, JB 2001 , 'Feed-forward regulation of gibberellin deactivation in pea' , Journal of plant growth regulation, vol. 20, no. 1 , pp. 87-94 , doi: 10.1007/s003440010004.

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Multiple lines of evidence suggest that the genes involved
in gibberellin (GA) biosynthesis are regulated
by bioactive GA levels. With the recent cloning of
GA 2-oxidase genes from pea, we investigated
whether this homeostatic regulation extends to the
genes controlling GA deactivation in this species,
utilizing two well-characterized GA-deficient mutants,
ls and na and a GA-accumulating mutant, sln.
The pea GA 2-oxidases showed feed-forward effects
at the mRNA level, while the endogenous levels of
GA20, GA29, GA1, and GA8 showed no evidence of
feed-forward regulation. Analyses of genomic
Southern blots and expressed sequenced tag (EST)
databases suggest that other GA 2-oxidases could
possibly account for this lack of feed-forward on GA

Item Type: Article
Authors/Creators:Elliott, RC and Ross, JJ and Smith, JJ and Lester, DR and Reid, JB
Journal or Publication Title: Journal of plant growth regulation
ISSN: 0721-7595
DOI / ID Number: 10.1007/s003440010004
Additional Information:

Copyright 2001 Springer-Verlag

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