ArticleFungal genetics and biology : FG & B2019
Diverse members of the Xylariales lack canonical mating-type regions.
Article in Fungal genetics and biology : FG & B, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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3 citing papers in PubMed, 10 citations in OpenAlex.
- Importance of appropriate genome information for the design of mating type primers in black and yellow morel populations.IMA fungus · 2022Article
- Population genomics of the grapevine pathogen Eutypa lata reveals evidence for population expansion and intraspecific differences in secondary metabolite gene clusters.PLoS genetics · 2022Article
- Genomic Analysis of Diverse Members of the Fungal GenusG3 (Bethesda, Md.) · 2020Article
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2 authors at 1 institution in 1 country.
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Abstract
A survey of genomes reported here for 10 isolates of Monosporascus species and an additional 25 genomes from other members of the Xylariales (representing 15 genera) available in public databases indicated that genes typically associated with MAT1-1 (mat A) or MAT1-2 (mat a) mating types are absent or have diverged greatly relative to counterparts in other Pezizomycotina. This was particularly surprising for isolates known to be homothallic, given that homothallic members of the Pezizomycotina typically possess a MAT1-1-1 (mat A-1) gene and one or both of two other closely-linked mating-type genes, MAT1-1-2 (mat A-2) and MAT1-1-3 (mat A-3), in addition to MAT1-2-1 (mat a-1). We failed to detect candidate genes for either MAT1-1-1 or MAT1-1-2 in any member of the Xylariales. Genes related to MAT1-2-1 and MAT1-1-3 are present in the genomes examined, but most appear to be orthologs of MATA_HMG (high-mobility group) genes with non-mating-type functions rather than orthologs of mating-type genes. Several MATA_HMG genes were found in genome positions that suggest they are derived from mating-type genes, but these genes are highly divergent relative to known MAT1-2-1 and MAT1-1-3 genes. The genomes examined represent substantial diversity within the order and include M. cannonballus, M. ibericus, Xylaria hypoxylon, X. striata, Daldinia eschscholzii, Eutypa lata, Rosellinia necatrix, Microdochium bolleyi and several others. We employed a number of avenues to search for homologs, including multiple BLAST approaches and examination of annotated genes adjacent to genes known to flank mating regions in other members of the Ascomycota. The results suggest that the mating regions have been lost from, or altered dramatically in, the Xylariales genomes examined and that mating and sexual development in these fungi are controlled differently than has been reported for members of the Pezizomycotina studied to date.
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