Mechanistic action of gibberellins in legume nodulation

Hayashi, Satomi, Gresshoff, Peter M. and Ferguson, Brett J. (2014) Mechanistic action of gibberellins in legume nodulation. Journal of Integrative Plant Biology, 56 10: 971-978. doi:10.1111/jipb.12201

Author Hayashi, Satomi
Gresshoff, Peter M.
Ferguson, Brett J.
Title Mechanistic action of gibberellins in legume nodulation
Journal name Journal of Integrative Plant Biology   Check publisher's open access policy
ISSN 1672-9072
Publication date 2014-05-18
Sub-type Article (original research)
DOI 10.1111/jipb.12201
Open Access Status
Volume 56
Issue 10
Start page 971
End page 978
Total pages 8
Place of publication Chichester, West Sussex, United Kingdom
Publisher Wiley-Blackwell
Collection year 2015
Language eng
Abstract Legume plants are capable of entering into a symbiotic relationship with rhizobia bacteria. This results in the formation of novel organs on their roots, called nodules, in which the bacteria capture atmospheric nitrogen and provide it as ammonium to the host plant. Complex molecular and physiological changes are involved in the formation and establishment of such nodules. Several phytohormones are known to play key roles in this process. Gibberellins (gibberellic acids; GAs), a class of phytohormones known to be involved in a wide range of biological processes (i.e., cell elongation, germination) are reported to be involved in the formation and maturation of legume nodules, highlighted by recent transcriptional analyses of early soybean symbiotic steps. Here, we summarize what is currently known about GAs in legume nodulation and propose a model of GA action during nodule development. Results from a wide range of studies, including GA application, mutant phenotyping, and gene expression studies, indicate that GAs are required at different stages, with an optimum, tightly regulated level being key to achieve successful nodulation. Gibberellic acids appear to be required at two distinct stages of nodulation: (i) early stages of rhizobia infection and nodule primordium establishment; and (ii) later stages of nodule maturation.
Keyword Gibberellic acid
Plant development
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Centre for Integrative Legume Research Publications
Official 2015 Collection
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Citation counts: TR Web of Science Citation Count  Cited 5 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 11 times in Scopus Article | Citations
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Created: Thu, 15 May 2014, 10:26:04 EST by Dr Brett Ferguson on behalf of Centre for Integrative Legume Research