Thermally Dimorphic Human Fungal Pathogens—Polyphyletic Pathogens with a Convergent Pathogenicity Trait

Divergent and Convergent Evolution of Fungal Pathogenicity

Fungal pathogens of plants and animals have multifarious effects; they cause devastating damages to agricultures, lead to life-threatening diseases in humans, or induce beneficial effects by reducing insect pest populations. Many virulence factors have been determined in different fungal pathogens; however, the molecular determinants contributing to fungal host selection and adaptation are larg...

Molecular detection of airborne Emergomyces africanus, a thermally dimorphic fungal pathogen, in Cape Town, South Africa

Emergomyces africanus is a thermally dimorphic fungus that causes a systemic mycosis in immunocompromised persons in South Africa. Infection is presumed to follow inhalation of airborne propagules. We developed a quantitative PCR protocol able to detect as few as 5 Es. africanus propagules per day. Samples were collected in Cape Town, South Africa over 50 weeks by a Burkard spore trap with an a...

Novel taxa of thermally dimorphic systemic pathogens in the Ajellomycetaceae (Onygenales).

Recent discoveries of novel systemic fungal pathogens with thermally dimorphic yeast-like phases have challenged the current taxonomy of the Ajellomycetaceae, a family currently comprising the genera Blastomyces, Emmonsia, Emmonsiellopsis, Helicocarpus, Histoplasma, Lacazia and Paracoccidioides. Our morphological, phylogenetic and phylogenomic analyses demonstrated species relationships and the...

Virulence and Pathogenicity of Fungal Pathogens with Special Reference to Candida albicans

The frequency of severe systemic fungal diseases has increased in the last few decades. The clinical use of broad spectrum antibacterial drugs and immunosuppressive agents after organ transplantation, cancer chemotherapy, and advancements in surgery are associated with increasing risk of fungal infection. Despite the effectiveness of available antifungals in combating such infections, the emerg...

Molecular Identification of Human Fungal Pathogens