ArticlePLoS genetics2024
Genome biology and evolution of mating-type loci in four cereal rust fungi.
Article in PLoS genetics, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 22 citations in OpenAlex.
- A pseudo-phased genome assembly for Hemileia vastatrix reveals an isolate-specific chromosomal haploid trisomy.G3 (Bethesda, Md.) · 2026Article
- Haplotype-phased genomes of the barley leaf rust pathogen reveal evidence of repeat element expansion and somatic hybridization.G3 (Bethesda, Md.) · 2026Article
- Two divergent haploid nuclei shaped the landscape of population diversity in wheat stripe rust Puccinia striiformis f. sp. tritici.Communications biology · 2026Article
- Host adaptation and genome evolution of the broad host range fungal rust pathogen, Austropuccinia psidii.G3 (Bethesda, Md.) · 2026Article
- Stepwise recombination suppression around the mating-type locus associated with a diploid-like life cycle in Schizothecium fungi.Molecular biology and evolution · 2026Article
- Long-read genomics reveal extensive nuclear-specific evolution and allele-specific expression in a dikaryotic fungus.Genome research · 2025Article
- Genomics Research on the Road of Studying Biology and Virulence of Cereal Rust Fungi.Molecular plant pathology · 2025Review
- Sexual recombination in cereal rust fungi: Knowns and unknowns of pathogen evolution and adaptation.PLoS pathogens · 2025Article
- A high-resolution haplotype collection uncovers somatic hybridization, recombination and intercontinental movement in oat crown rust.PLoS genetics · 2024Article
- Uncovering the Mechanisms: The Role of Biotrophic Fungi in Activating or Suppressing Plant Defense Responses.Journal of fungi (Basel, Switzerland) · 2024Review
- Genome biology and evolution of mating-type loci in four cereal rust fungi.PLoS genetics · 2024Article
- Uncovering the history of recombination and population structure in western Canadian stripe rust populations through mating type alleles.BMC biology · 2023Article
- Dynamics of transposable element accumulation in the non-recombining regions of mating-type chromosomes in anther-smut fungi.Nature communications · 2023Article
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Authors and funding
3 authors at 2 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
Permanent heterozygous loci, such as sex- or mating-compatibility regions, often display suppression of recombination and signals of genomic degeneration. In Basidiomycota, two distinct loci confer mating compatibility. These loci encode homeodomain (HD) transcription factors and pheromone receptor (Pra)-ligand allele pairs. To date, an analysis of genome level mating-type (MAT) loci is lacking for obligate biotrophic basidiomycetes in the Pucciniales, an order containing serious agricultural plant pathogens. Here, we focus on four species of Puccinia that infect oat and wheat, including P. coronata f. sp. avenae, P. graminis f. sp. tritici, P. triticina and P. striiformis f. sp. tritici. MAT loci are located on two separate chromosomes supporting previous hypotheses of a tetrapolar mating compatibility system in the Pucciniales. The HD genes are multiallelic in all four species while the PR locus appears biallelic, except for P. graminis f. sp. tritici, which potentially has multiple alleles. HD loci are largely conserved in their macrosynteny, both within and between species, without strong signals of recombination suppression. Regions proximal to the PR locus, however, displayed signs of recombination suppression and genomic degeneration in the three species with a biallelic PR locus. Our observations support a link between recombination suppression, genomic degeneration, and allele diversity of MAT loci that is consistent with recent mathematical modelling and simulations. Finally, we confirm that MAT genes are expressed during the asexual infection cycle, and we propose that this may support regulating nuclear maintenance and pairing during infection and spore formation. Our study provides insights into the evolution of MAT loci of key pathogenic Puccinia species. Understanding mating compatibility can help predict possible combinations of nuclear pairs, generated by sexual reproduction or somatic recombination, and the potential evolution of new virulent isolates of these important plant pathogens.
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