Evidence map›Paper›PMID 21605470›Full record

ArticleGenome biology2011

A novel mode of chromosomal evolution peculiar to filamentous Ascomycete fungi.

James K Hane, Thierry Rouxel, Barbara J Howlett, Gert H J Kema, Stephen B Goodwin, Richard P Oliver

Abstract read
In one paragraph

Article in Genome biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed
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1 · What the graph read from it

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2 · The registry

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3 · Its place in the literature

Who cites it

76 citing papers in PubMed.

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16 more citing papers are in PubMed but not listed here.

4 · The record

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5 · Who and what money

Authors and funding

6 authors.

James K HaneAustralian Centre for Necrotrophic Fungal Pathogens, Curtin University, Perth, 6845, Australia.
Thierry Rouxel
Barbara J Howlett
Gert H J Kema
Stephen B Goodwin
Richard P Oliver

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundGene loss, inversions, translocations, and other chromosomal rearrangements vary among species, resulting in different rates of structural genome evolution. Major chromosomal rearrangements are rare in most eukaryotes, giving large regions with the same genes in the same order and orientation across species. These regions of macrosynteny have been very useful for locating homologous genes in different species and to guide the assembly of genome sequences. Previous analyses in the fungi have indicated that macrosynteny is rare; instead, comparisons across species show no synteny or only microsyntenic regions encompassing usually five or fewer genes. To test the hypothesis that chromosomal evolution is different in the fungi compared to other eukaryotes, synteny was compared between species of the major fungal taxa.

resultsThese analyses identified a novel form of evolution in which genes are conserved within homologous chromosomes, but with randomized orders and orientations. This mode of evolution is designated mesosynteny, to differentiate it from micro- and macrosynteny seen in other organisms. Mesosynteny is an alternative evolutionary pathway very different from macrosyntenic conservation. Surprisingly, mesosynteny was not found in all fungal groups. Instead, mesosynteny appears to be restricted to filamentous Ascomycetes and was most striking between species in the Dothideomycetes.

conclusionsThe existence of mesosynteny between relatively distantly related Ascomycetes could be explained by a high frequency of chromosomal inversions, but translocations must be extremely rare. The mechanism for this phenomenon is not known, but presumably involves generation of frequent inversions during meiosis.

Indexed as

Evolution, MolecularGenome, FungalSyntenyAlgorithmsAscomycotaChromosome InversionChromosome MappingChromosomesConserved SequenceDatabases, GeneticGenomicsMeiosisPhylogenySpecies Specificity

Identifiers

PMID21605470
PMCPMC3219968

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.