Literature DB >> 22446319

Telomere-targeted retrotransposons in the rice blast fungus Magnaporthe oryzae: agents of telomere instability.

John H Starnes1, David W Thornbury, Olga S Novikova, Cathryn J Rehmeyer, Mark L Farman.   

Abstract

The fungus Magnaporthe oryzae is a serious pathogen of rice and other grasses. Telomeric restriction fragments in Magnaporthe isolates that infect perennial ryegrass (prg) are hotspots for genomic rearrangement and undergo frequent, spontaneous alterations during fungal culture. The telomeres of rice-infecting isolates are very stable by comparison. Sequencing of chromosome ends from a number of prg-infecting isolates revealed two related non-LTR retrotransposons (M. oryzae Telomeric Retrotransposons or MoTeRs) inserted in the telomere repeats. This contrasts with rice pathogen telomeres that are uninterrupted by other sequences. Genetic evidence indicates that the MoTeR elements are responsible for the observed instability. MoTeRs represent a new family of telomere-targeted transposons whose members are found exclusively in fungi.

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Year:  2012        PMID： 22446319      PMCID： PMC3374306          DOI： 10.1534/genetics.111.137950

Source DB:  PubMed          Journal:  Genetics        ISSN： 0016-6731            Impact factor:   4.562


  80 in total

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