Molecular mechanisms controlling legume autoregulation of nodulation

Reid, Dugald E., Ferguson, Brett J., Hayashi, Satomi, Lin, Yu-Hsiang and Gresshoff, Peter M. (2011) Molecular mechanisms controlling legume autoregulation of nodulation. Annals of Botany, 108 5: 789-795. doi:10.1093/aob/mcr205


Author Reid, Dugald E.
Ferguson, Brett J.
Hayashi, Satomi
Lin, Yu-Hsiang
Gresshoff, Peter M.
Title Molecular mechanisms controlling legume autoregulation of nodulation
Journal name Annals of Botany   Check publisher's open access policy
ISSN 0305-7364
1095-8290
Publication date 2011-10
Sub-type Critical review of research, literature review, critical commentary
DOI 10.1093/aob/mcr205
Volume 108
Issue 5
Start page 789
End page 795
Total pages 7
Place of publication Oxford, U.K.
Publisher Oxford University Press
Collection year 2012
Language eng
Formatted abstract
Background: High input costs and environmental pressures to reduce nitrogen use in agriculture have increased the competitive advantage of legume crops. The symbiotic relationship that legumes form with nitrogen-fixing soil bacteria in root nodules is central to this advantage.

Scope: Understanding how legume plants maintain control of nodulation to balance the nitrogen gains with their energy needs and developmental costs will assist in increasing their productivity and relative advantage. For this reason, the regulation of nodulation has been extensively studied since the first mutants exhibiting increased nodulation were isolated almost three decades ago.

Conclusions: Nodulation is regulated primarily via a systemic mechanism known as the autoregulation of nodulation (AON), which is controlled by a CLAVATA1-like receptor kinase. Multiple components sharing homology with the CLAVATA signalling pathway that maintains control of the shoot apical meristem in arabidopsis have now been identified in AON. This includes the recent identification of several CLE peptides capable of activating nodule inhibition responses, a low molecular weight shoot signal and a role for CLAVATA2 in AON. Efforts are now being focused on directly identifying the interactions of these components and to identify the form that long-distance transport molecules take.
Keyword Legume nodulation
AON
Signalling
Hormone
Plant peptide
Receptor kinase
Symbiosis
Receptor-like kinase
Pisum-sativum-L
Mediates systemic regulation
Split-root systems
L MERR mutants
Lotus-japonicus
Medicago-truncatula
Glycine-max
Nodule development
Hypernodulation mutant
Autoregulation of nodulation (AON)
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Critical review of research, literature review, critical commentary
Collections: Centre for Integrative Legume Research Publications
Official 2012 Collection
School of Agriculture and Food Sciences
 
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