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Revisiting the isolation source after half a century: Emericellopsis mirabilis on a yellow-green alga

Takashima, Yusuke ; Nakayama, Takeshi ; Degawa, Yousuke

Mycoscience, 2021/04/15, pp.MYC540 [Peer Reviewed Journal]

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Title:
Revisiting the isolation source after half a century: Emericellopsis mirabilis on a yellow-green alga
Author: Takashima, Yusuke ; Nakayama, Takeshi ; Degawa, Yousuke
Subjects: cleistothecia ; fungi-algae interaction ; homothallism ; soil algae ; Xanthophyceae
Is Part Of: Mycoscience, 2021/04/15, pp.MYC540
Description: Fungi-algae interactions, such as lichen-forming fungi and parasitic chytrids on phytoplankton, are common in ecosystems. In contrast, interactions between filamentous fungi and soil algae that can be observed with the naked eye have been given little attention and remain unexplored. Here, we report a fungus that was associated with a visible symptom of dead algae on a soil surface in Sugadaira-kogen, Nagano, central Japan. Acremonium-like conidiophores were growing on vesicles and dead bodies of a yellow-green alga, Botrydium granulatum. The fungus was identified as Emericellopsis mirabilis based on its morphology by microscopic observation, phylogenetic analysis, and the similarity of the isolation substrate with the first description of the species. Co-culture experiments showed a filamentous cell differentiation of the alga by the fungus, but no harmful or beneficial effects on algal growth. Therefore, we speculate that E. mirabilis is a facultative parasite of B. granulatum under natural conditions.
Publisher: The Mycological Society of Japan
Language: English

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