Publication Date:
2004-02-14
Description:
Legumes form symbiotic associations with both mycorrhizal fungi and nitrogen-fixing soil bacteria called rhizobia. Several of the plant genes required for transduction of rhizobial signals, the Nod factors, are also necessary for mycorrhizal symbiosis. Here, we describe the cloning and characterization of one such gene from the legume Medicago truncatula. The DMI1 (does not make infections) gene encodes a novel protein with low global similarity to a ligand-gated cation channel domain of archaea. The protein is highly conserved in angiosperms and ancestral to land plants. We suggest that DMI1 represents an ancient plant-specific innovation, potentially enabling mycorrhizal associations.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Ane, Jean-Michel -- Kiss, Gyorgy B -- Riely, Brendan K -- Penmetsa, R Varma -- Oldroyd, Giles E D -- Ayax, Celine -- Levy, Julien -- Debelle, Frederic -- Baek, Jong-Min -- Kalo, Peter -- Rosenberg, Charles -- Roe, Bruce A -- Long, Sharon R -- Denarie, Jean -- Cook, Douglas R -- New York, N.Y. -- Science. 2004 Feb 27;303(5662):1364-7. Epub 2004 Feb 12.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Plant Pathology, University of California, Davis, One Shields Avenue, Davis, CA 95616, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/14963334" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Motifs
;
Amino Acid Sequence
;
Arabidopsis/genetics
;
Chromosomes, Artificial, Bacterial
;
Cloning, Molecular
;
Fabaceae/genetics/metabolism/microbiology
;
Gene Expression Regulation, Plant
;
*Genes, Plant
;
Lipopolysaccharides/metabolism
;
Medicago/*genetics/metabolism/*microbiology
;
Molecular Sequence Data
;
Mycorrhizae/*physiology
;
Nitrogen Fixation
;
Phylogeny
;
Plant Proteins/chemistry/genetics/*physiology
;
Plant Roots/metabolism
;
Protein Structure, Tertiary
;
Recombination, Genetic
;
Rhizobiaceae/*physiology
;
Sequence Homology, Amino Acid
;
Signal Transduction
;
*Symbiosis
;
Transgenes
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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