Publications by authors named "J Stajich"

The fungal genus contains many phytopathogenic species currently impacting forests and fruit trees worldwide. Despite their importance, a majority of spp. lack sufficient genomic resources to resolve suspected cryptic species.

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Article Synopsis
  • During the COVID-19 pandemic, fungal infections like pulmonary aspergillosis and invasive candidiasis gained attention, with a specific focus on a rare pathogen, Diutina catenulata, isolated from patients' urine.
  • A study identified nine strains from six patients needing ventilator support and urinary catheters, all of whom were unvaccinated against COVID-19, and revealed consistent morphological and biochemical profiles among the isolates.
  • Whole-genome sequencing showed minimal genetic variation among the strains, suggesting they were part of a cluster of D. catenulata infections associated with COVID-19.
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Fungal infections are difficult to prevent and treat in large part due to strain heterogeneity. However, the genetic mechanisms driving pathogen variation remain poorly understood. Here, we determined the extent to which -giant transposons capable of mobilizing numerous fungal genes-generate genetic and phenotypic variability in the human pathogen .

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Black yeasts and relatives comprise Micro-Colonial Fungi (MCFs) which are slow-growing stress-tolerant micro-eukaryotes that specialize in extreme environments. MCFs are paraphyletic and found in the Orders () and (). We have isolated and described three new MCFs species from desert biological soil crusts (BSCs) collected from two arid land regions: Joshua Tree National Park (Mojave Desert) and UC Natural Reserve at Boyd Deep Canyon (confluence of Mojave and Sonoran Deserts).

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Every fungal cell is encapsulated in a cell wall, essential for cell viability, morphogenesis, and pathogenesis. Most knowledge of the cell wall composition in fungi has focused on ascomycetes, especially human pathogens, but considerably less is known about early divergent fungal groups, such as species in the Zoopagomycota and Mucoromycota phyla. To shed light on evolutionary changes in the fungal cell wall, we studied the monosaccharide composition of the cell wall of 18 species including early diverging fungi and species in the Basidiomycota and Ascomycota phyla with a focus on those with pathogenic lifestyles and interactions with plants.

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