1887

Abstract

The chlamydospore is a distinctive morphological feature of the fungal pathogen that can be induced to form in oxygen-limited environments and has been reported in clinical specimens. Chlamydospores are not produced by the model yeasts and , so there is limited understanding of the pathways that govern their development. Here, the results of a forward genetic approach that begins to define the genetic control of chlamydospore formation are described. Six genes – , , , , and – are required for efficient chlamydospore formation, based on the phenotypes of homozygous insertion mutants and reconstituted strains. Mutations in , and completely abolish chlamydospore formation. Mutations in , and delay normal chlamydospore formation. The involvement of alkaline pH-response regulators Rim13p and Mds3p in chlamydospore formation is unexpected in view of the fact that chlamydospores in the inducing conditions used here are repressed in alkaline media.

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2003-12-01
2020-07-13
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