NDLI: The reduced mycorrhizal colonisation (rmc) mutation of tomato disrupts five gene sequences including the CYCLOPS/IPD3 homologue

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Soil nutritional status, not inoculum identity, primarily determines the effect of arbuscular mycorrhizal fungi on the growth of Knautia arvensis plants

The reduced mycorrhizal colonisation (rmc) mutation of tomato disrupts five gene sequences including the CYCLOPS/IPD3 homologue

Arbuscular mycorrhizal fungi from New Caledonian ultramafic soils improve tolerance to nickel of endemic plant species

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The reduced mycorrhizal colonisation (rmc) mutation of tomato disrupts five gene sequences including the CYCLOPS/IPD3 homologue

Content Provider	Springer Nature Link
Author	Larkan, Nicholas J. Ruzicka, Dan R. Edmonds Tibbett, Tamara Durkin, Jonathan M. H. Jackson, Louise E. Smith, F. Andrew Schachtman, Daniel P. Smith, Sally E. Barker, Susan J.
Copyright Year	2013
Abstract	Arbuscular mycorrhizal (AM) symbiosis in vascular plant roots is an ancient mutualistic interaction that evolved with land plants. More recently evolved root mutualisms have recruited components of the AM signalling pathway as identified with molecular approaches in model legume research. Earlier we reported that the reduced mycorrhizal colonisation (rmc) mutation of tomato mapped to chromosome 8. Here we report additional functional characterisation of the rmc mutation using genotype grafts and proteomic and transcriptomic analyses. Our results led to identification of the precise genome location of the Rmc locus from which we identified the mutation by sequencing. The rmc phenotype results from a deletion that disrupts five predicted gene sequences, one of which has close sequence match to the CYCLOPS/IPD3 gene identified in legumes as an essential intracellular regulator of both AM and rhizobial symbioses. Identification of two other genes not located at the rmc locus but with altered expression in the rmc genotype is also described. Possible roles of the other four disrupted genes in the deleted region are discussed. Our results support the identification of CYCLOPS/IPD3 in legumes and rice as a key gene required for AM symbiosis. The extensive characterisation of rmc in comparison with its ‘parent’ 76R, which has a normal mycorrhizal phenotype, has validated these lines as an important comparative model for glasshouse and field studies of AM and non-mycorrhizal plants with respect to plant competition and microbial interactions with vascular plant roots.
Starting Page	573
Ending Page	584
Page Count	12
File Format	PDF
ISSN	09406360
Journal	Mycorrhiza
Volume Number	23
Issue Number	7
e-ISSN	14321890
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-10
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Arbuscular mycorrhizal symbiosis Solanum lycopersicum Fast neutron mutagenesis Common Sym pathway The Tomato Genome Consortium Microbiology Plant Sciences Ecology Agriculture Forestry
Content Type	Text
Resource Type	Article
Subject	Genetics Plant Science Medicine Molecular Biology Ecology, Evolution, Behavior and Systematics

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The reduced mycorrhizal colonisation (rmc) mutation of tomato disrupts five gene sequences including the CYCLOPS/IPD3 homologue

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The reduced mycorrhizal colonisation (rmc) mutation of tomato disrupts five gene sequences including the CYCLOPS/IPD3 homologue