Analysis of the mating-type loci of co-occurring and phylogenetically related species of Ascochyta and Phoma.

@article{Woudenberg2012AnalysisOT,
  title={Analysis of the mating-type loci of co-occurring and phylogenetically related species of Ascochyta and Phoma.},
  author={Joyce H. C. Woudenberg and Johannes de Gruyter and Pedro W. Crous and L. H. Zwiers},
  journal={Molecular plant pathology},
  year={2012},
  volume={13 4},
  pages={
          350-62
        }
}
Ascochyta and Phoma are fungal genera containing several important plant pathogenic species. These genera are morphologically similar, and recent molecular studies performed to unravel their phylogeny have resulted in the establishment of several new genera within the newly erected Didymellaceae family. An analysis of the structure of fungal mating-type genes can contribute to a better understanding of the taxonomic relationships of these plant pathogens, and may shed some light on their… 

Figures and Tables from this paper

Structural organization of the mating-type locus in Clade 3 of Fusarium solani species complex and development of PCR protocol for identification of MAT idiomorphs
TLDR
The first investigation of the structural organization of the MAT locus from FSSC-Clade 3 is presented, which can give support to downstream functional studies of individual mating-type transcripts and develop primers to facilitate the application of the biological concept through sexual crosses.
Characterization of mating type genes supports the hypothesis that Stagonosporopsis chrysanthemi is homothallic and provides evidence that Stagonosporopsis tanaceti is heterothallic
TLDR
The results indicated that only one mating type of S. tanaceti was present in Tasmania, Australia, and the absence of a second mating type suggests that this species does not reproduce sexually in Australia and that ascospores are unlikely to be a source of inoculum for ray blight of pyrethrum.
Unequal Recombination and Evolution of the Mating-Type (MAT) Loci in the Pathogenic Fungus Grosmannia clavigera and Relatives
TLDR
All members of the Ophiostomatales studied here including those that were previously deemed asexual have the potential to reproduce sexually, and this ability can potentially increase genetic variability and can enhance fitness in new, ecological niches.
Phoma-like fungi on soybeans
TLDR
Protein-encoding genes (TEF1 and β-tubulin) were successfully applied within the Phoma genus to infer phylogenetic relationships and it was confirmed that Ph. sojicola was identical to Boeremia exIGua var.
Phylogeny and DNA-based identification in Phoma and related genera
TLDR
This thesis treats the taxonomy of a generic complex presently known as PhomaSacc, which comprises more than 200 taxa at species or variety level that are characterised by the production of hyaline, non-septate conidial spores in pycnidial conidiomata.
Mixed-reproductive strategies, competitive mating-type distribution and life cycle of fourteen black morel species
TLDR
Interestingly, the morel genome information is used to investigate mating systems and life cycles of fourteen black morel species and it is indicated that they are all heterothallic and their life cycles are predominantly haploid, but sterile haploid fruiting also exists.
Revisiting Stagonosporopsis species associated with chrysanthemum and pyrethrum ray blight
TLDR
A recently developed species-specific multiplex PCR assay provides a rapid and robust tool to study the global distribution of these important quarantine pathogens.
The role of internal transcribed spacer 2 secondary structures in classifying mycoparasitic Ampelomyces
TLDR
The use of ITS2 S2s are recommended as an important tool to analyse environmental sequencing and unveiling the underlying evolutionary processes in fungi.
...
1
2
3
...

References

SHOWING 1-10 OF 76 REFERENCES
Evolutionary relationships among Ascochyta species infecting wild and cultivated hosts in the legume tribes Cicereae and Vicieae.
TLDR
Isolates sampled from big-flower vetch (Vicia grandiflora) were polyphyletic suggesting that either this host is colonized by phylogenetically distinct lineages of Ascochyta or that the hosts are polyphyletsic and infected by distinct evolutionary lineage of the pathogen.
Evolutionary Dynamics of Mating-Type Loci of Mycosphaerella spp. Occurring on Banana
TLDR
The mating-type loci of the examined Mycosphaerella species are expanded, containing two additional MyCosphaerella-specific genes in a unique genomic organization, showing the great flexibility of the MAT loci in general and of the Mycospherella species in particular.
Isolation and characterization of the mating-type locus of the barley pathogen Pyrenophora teres and frequencies of mating-type idiomorphs within and among fungal populations collected from barley landraces.
TLDR
Sexual reproduction appears to be the major process that equalizes the frequencies of the 2 mating types within populations, indicating that they have all maintained the potential for sexual reproduction.
Role of host specificity in the speciation of Ascochyta pathogens of cool season food legumes
  • T. Peever
  • Biology
    European Journal of Plant Pathology
  • 2007
TLDR
The results suggest that although Ascochyta fungi have retained the ability to mate and produce progeny with normal saprophytic fitness, progeny are severely compromised in parasitic fitness.
DNA phylogeny reveals polyphyly of Phoma section Peyronellaea and multiple taxonomic novelties
TLDR
Based on the multigene analyses, five new Phoma species could be delineated while a further five required taxonomic revision to be consistent with the genetic variation observed.
Molecular organization of mating type loci in heterothallic, homothallic, and asexual Gibberella/Fusarium species.
TLDR
RT-PCR analysis proved that the F. oxysporum MAT genes are expressed and that all putative introns found in each of the four MAT genes in G. fujikuroi could not be attributed to mutations in the MAT genes themselves.
...
1
2
3
4
5
...