Journal
MICROORGANISMS
Volume 10, Issue 8, Pages -Publisher
MDPI
DOI: 10.3390/microorganisms10081681
Keywords
Cryptococcus; whole-genome sequencing; VGVI; phylogenomics; molecular type
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Funding
- [AOTHNARBHA3640C]
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Whole-genome sequencing was used to analyze the population structure of the pathogenic species Cryptococcus gattii, leading to the discovery of a genetically distant VGVI isolate in Mexico. This study expands the understanding of Cryptococcus ecological range and highlights the clinical importance of VGVI as a separate molecular type.
Whole-genome sequencing has advanced our understanding of the population structure of the pathogenic species complex Cryptococcus gattii, which has allowed for the phylogenomic specification of previously described major molecular type groupings and novel lineages. Recently, isolates collected in Mexico in the 1960s were determined to be genetically distant from other known molecular types and were classified as VGVI. We sequenced four clinical isolates and one veterinary isolate collected in the southwestern United States and Argentina from 2012 to 2021. Phylogenomic analysis groups these genomes with those of the Mexican VGVI isolates, expanding VGVI into a clade and establishing this molecular type as a clinically important population. These findings also potentially expand the known Cryptococcus ecological range with a previously unrecognized endemic area.
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