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KMID : 1160220140420010001
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Mycobiology
2014 Volume.42 No. 1 p.1 ~ p.5
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Microcyle Conidiation in Filamentous Fungi
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Jung Bok-Nam
Kim So-Yeon
Lee Jung-Kwan
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Abstract
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The typical life cycle of filamentous fungi commonly involves asexual sporulation after vegetative growth in response toenvironmental factors. The production of asexual spores is critical in the life cycle of most filamentous fungi. Normally, conidiaare produced from vegetative hyphae (termed mycelia). However, fungal species subjected to stress conditions exhibit anextremely simplified asexual life cycle, in which the conidia that germinate directly generate further conidia, without formingmycelia. This phenomenon has been termed as microcycle conidiation, and to date has been reported in more than 100 fungalspecies. In this review, first, we present the morphological properties of fungi during microcycle conidiation, and dividemicrocycle conidiation into four simple categories, even though fungal species exhibit a wide variety of morphological differencesduring microcycle conidiogenesis. Second, we describe the factors that influence microcycle conidiation in various fungal species,and present recent genetic studies that have identified the genes responsible for this process. Finally, we discuss the biologicalmeaning and application of microcycle conidiation.
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KEYWORD
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Conidiation, Conidium, Filamentous fungi, Germination, Microcycle
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