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A receptor kinase gene regulating symbiotic nodule development

Leguminous plants are able to establish a nitrogen-fixing symbiosis with soil bacteria generally known as rhizobia. Metabolites exuded by the plant root activate the production of a rhizobial signal molecule, the Nod factor, which is essential for symbiotic nodule development. This lipo-chitooligosa...

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Published in:Nature (London) 2002-06, Vol.417 (6892), p.962-966
Main Authors: Kiss, György B, Endre, Gabriella, Kereszt, Attila, Kevei, Zoltán, Mihacea, Sorina, Kaló, Péter
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cited_by cdi_FETCH-LOGICAL-c605t-180be8aa3ad2cde69658c77609c3db3572467657f5c11a179708a51adb5864a13
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container_title Nature (London)
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description Leguminous plants are able to establish a nitrogen-fixing symbiosis with soil bacteria generally known as rhizobia. Metabolites exuded by the plant root activate the production of a rhizobial signal molecule, the Nod factor, which is essential for symbiotic nodule development. This lipo-chitooligosaccharide signal is active at femtomolar concentrations, and its structure is correlated with host specificity of symbiosis, suggesting the involvement of a cognate perception system in the plant host. Here we describe the cloning of a gene from Medicago sativa that is essential for Nod-factor perception in alfalfa, and by genetic analogy, in the related legumes Medicago truncatula and Pisum sativum. The identified 'nodulation receptor kinase', NORK, is predicted to function in the Nod-factor perception/transduction system (the NORK system) that initiates a signal cascade leading to nodulation. The family of 'NORK extracellular-sequence-like' (NSL) genes is broadly distributed in the plant kingdom, although their biological function has not been previously ascribed. We suggest that during the evolution of symbiosis an ancestral NSL system was co-opted for transduction of an external ligand, the rhizobial Nod factor, leading to development of the symbiotic root nodule.
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Psychology ; Genes ; Genes, Plant - genetics ; Medicago sativa - enzymology ; Medicago sativa - genetics ; Medicago sativa - metabolism ; Medicago sativa - microbiology ; Metabolites ; Molecular Sequence Data ; Mutation - genetics ; Nitrogen Fixation ; Parasitism and symbiosis ; Perception ; Phenotype ; Plant physiology and development ; Plant Roots - enzymology ; Plant Roots - genetics ; Plant Roots - microbiology ; Protein Kinases - chemistry ; Protein Kinases - genetics ; Protein Kinases - metabolism ; Rhizobium - metabolism ; Sequence Alignment ; Symbiosis ; Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...) ; Symbiosis - genetics</subject><ispartof>Nature (London), 2002-06, Vol.417 (6892), p.962-966</ispartof><rights>2002 INIST-CNRS</rights><rights>COPYRIGHT 2002 Nature Publishing Group</rights><rights>Copyright Macmillan Journals Ltd. 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identifier ISSN: 0028-0836
ispartof Nature (London), 2002-06, Vol.417 (6892), p.962-966
issn 0028-0836
1476-4687
language eng
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source Nature Journals
subjects Agronomy. Soil science and plant productions
Alfalfa
Amino Acid Motifs
Amino Acid Sequence
Arabidopsis - enzymology
Arabidopsis - genetics
Bacteria
Biological and medical sciences
Cloning
Cloning, Molecular
Computational Biology
Economic plant physiology
Fabaceae - enzymology
Fabaceae - genetics
Flowers & plants
Fundamental and applied biological sciences. Psychology
Genes
Genes, Plant - genetics
Medicago sativa - enzymology
Medicago sativa - genetics
Medicago sativa - metabolism
Medicago sativa - microbiology
Metabolites
Molecular Sequence Data
Mutation - genetics
Nitrogen Fixation
Parasitism and symbiosis
Perception
Phenotype
Plant physiology and development
Plant Roots - enzymology
Plant Roots - genetics
Plant Roots - microbiology
Protein Kinases - chemistry
Protein Kinases - genetics
Protein Kinases - metabolism
Rhizobium - metabolism
Sequence Alignment
Symbiosis
Symbiosis (nodules, symbiotic nitrogen fixation, mycorrhiza...)
Symbiosis - genetics
title A receptor kinase gene regulating symbiotic nodule development
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