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PLoS Pathogens Issue Image | Vol. 7(6) June 2011

PLoS Pathogens Issue Image | Vol. 7(6) June 2011

PLOS
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A zygospore formed during sexual development of the pathogenic fungus Mucor circinelloides visualized by scanning electron microscopy.

M. circinelloides is a human pathogenic zygomycete and has a bipolar mating system with (+) and (−) mating types. When co-cultured, strains of opposite mating type recognize each other and sexual reproduction occurs, resulting in the formation of zygospores. Zygospores are the dormant, stress-tolerant stage, and are thick-walled and enveloped by repeated asterisk-like structures, resulting in considerable structural rigidity. After a long period of dormancy from months to a year, zygospores of some species can germinate to produce progeny. Zygospores are morphologically distinct from asexual sporangiospores produced by sporangia (see Li et al., doi: 10.1371/journal.ppat.1002086).

Image Credit: Valerie Knowlton, North Carolina State University; and Joseph Heitman and Soo Chan Lee, Duke University

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A zygospore formed during sexual development of the pathogenic fungus Mucor circinelloides visualized by scanning electron microscopy.

M. circinelloides is a human pathogenic zygomycete and has a bipolar mating system with (+) and (−) mating types. When co-cultured, strains of opposite mating type recognize each other and sexual reproduction occurs, resulting in the formation of zygospores. Zygospores are the dormant, stress-tolerant stage, and are thick-walled and enveloped by repeated asterisk-like structures, resulting in considerable structural rigidity. After a long period of dormancy from months to a year, zygospores of some species can germinate to produce progeny. Zygospores are morphologically distinct from asexual sporangiospores produced by sporangia (see Li et al., doi: 10.1371/journal.ppat.1002086).

Image Credit: Valerie Knowlton, North Carolina State University; and Joseph Heitman and Soo Chan Lee, Duke University

https://doi.org/10.1371/image.ppat.v07.i06.g001