Document Detail

Position of the reduced mycorrhizal colonisation (Rmc) locus on the tomato genome map.
MedLine Citation:
PMID:  17285306     Owner:  NLM     Status:  MEDLINE    
Our research aims to investigate the molecular communication between land plants and arbuscular mycorrhizal (AM) fungi in the establishment of symbiosis. We have identified a mutation in the facultative AM host tomato, which we named rmc. Plants that are homozygous for rmc no longer host most AM fungi. The mutation also affects the interaction of tomato with root knot nematode and Fusarium wilt. However, the function/s encoded by the intact Rmc locus is/are unknown. To clone and sequence the gene or genes that comprise the Rmc locus, we have initiated a positional cloning project. In this paper, we report the construction of mapping populations and use of molecular markers from the published genome map to identify the location of Rmc on tomato chromosome 8. Nucleotide binding site-leucine rich repeat resistance genes, reported to reside in the same region of that chromosome, provided insufficient differences to develop cleaved amplified polymorphic sequence markers. Therefore, we were unable to map these sequences in relation to rmc. Our results potentiate future work to identify the Rmc function and to determine the genetic basis for the multiple plant-microbe interaction functions that the rmc mutation has defined.
Nicholas J Larkan; Sally E Smith; Susan J Barker
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2007-02-07
Journal Detail:
Title:  Mycorrhiza     Volume:  17     ISSN:  0940-6360     ISO Abbreviation:  Mycorrhiza     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-05-14     Completed Date:  2007-11-13     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100955036     Medline TA:  Mycorrhiza     Country:  Germany    
Other Details:
Languages:  eng     Pagination:  311-8     Citation Subset:  IM    
School of Plant Biology M084, Centre for Soil-Plant Interactions, The University of Western Australia, 35 Stirling Highway, Crawley, WA 6009, Australia.
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MeSH Terms
Chromosome Mapping
Chromosomes, Plant / genetics
Genes, Plant / genetics
Genome, Plant / genetics*
Lycopersicon esculentum / genetics*,  microbiology
Mycorrhizae / physiology*
Symbiosis / genetics

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