Genomics in Coccidioides: insights into evolution, ecology, and pathogenesis
1University of California-Berkeley, Department of Plant and Microbial Biology, Berkeley, California, USA.
Medical Mycology
|March 1, 2014
Summary
Genomic studies of Coccidioides fungi reveal insights into the evolution of coccidioidomycosis, a disease endemic to the Americas. Understanding genetic variation is key to future research on this pathogen.
Area of Science:
- Mycology
- Genomics
- Evolutionary Biology
Background:
- Coccidioides immitis and C. posadasii cause coccidioidomycosis, a disease prevalent in arid regions of the Americas.
- These dimorphic fungi belong to the Onygenales order, a group with diverse pathogenic and nonpathogenic species.
Purpose of the Study:
- To analyze genomic data of Coccidioides and related Onygenales species.
- To understand the evolutionary processes shaping Coccidioides populations and pathogenesis.
- To identify genetic factors contributing to virulence and other phenotypes.
Main Methods:
- Phylogenomic comparisons of fungal genomes.
- Population genomics and gene expression studies in Coccidioides.
- Analysis of gene family expansions/contractions and gene flow.
Main Results:
- Genomic data have illuminated the ecology and pathogenesis of Coccidioides.
- Gene family dynamics and gene flow provide insights into Coccidioides evolution.
- Broadened understanding of fungal genetic diversity and variation sources.
Conclusions:
- Further sequencing of diverse Coccidioides isolates will enhance understanding of evolutionary processes.
- Genome-wide association studies linking genotype to phenotype will identify virulence genes.
- Genomic approaches are crucial for unraveling the complexity of this human pathogen.
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