Overview
Lodderomyces elongisporus is an ascomycetous yeast and the closest known phylogenetic relative of Candida parapsilosis. Originally considered non-pathogenic, it has emerged as a rare but clinically significant cause of fungemia, particularly in patients with indwelling catheters or immunosuppression. It is frequently misidentified as C. parapsilosis by conventional methods.
Metal Dependencies
L. elongisporus shares with its Candida relatives a dependence on iron for growth, zinc for protease activity, and copper for superoxide dismutase-mediated oxidative defense. Its iron acquisition strategies likely mirror those of C. parapsilosis, including reductive iron uptake and possible siderophore utilization.
Ecological Role
The natural ecological niche of L. elongisporus remains poorly defined. Its detection in clinical settings — bloodstream infections, catheter tips — suggests it can exploit breaches in host barriers. Genomic analysis reveals expanded gene families for secreted aspartyl proteases and lipases, indicating adaptation for tissue invasion similar to pathogenic Candida species.
Conditions Associated
Reported cases of L. elongisporus fungemia are rare but increasing as molecular identification methods improve. Patients with central venous catheters and prolonged ICU stays are at greatest risk. Antifungal susceptibility is generally favorable, with sensitivity to fluconazole and amphotericin B, though resistance monitoring is warranted given its emerging status.
Cross-References
- candida-parapsilosis — closest phylogenetic relative
- iron — growth requirement
- biofilm — catheter-associated persistence
- candida albicans — comparative virulence framework