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Updated: Jul 13, 2026

Isolation of Culturable Yeasts and Molds from Soils to Investigate Fungal Population Structure
Published on: May 27, 2022
Caecomyces sympodialis sp. nov., a new rumen fungus isolated from Bos indicus
Yo-Chia Chen1, Sheng-Da Tsai, Hsueh-Ling Cheng
1Institute of Biotechnology, National Pingtung University of Science and Technology, Neipu Hsiang, Pingtung, 91201 Taiwan, ROC.
Abstract:
A new anaerobic rumen fungus was isolated from the rumen fluid of a yellow cow (Bos indicus). This fungus appears to be a previously undescribed species of the genus Caecomyces, it possessing uniflagellate zoospores, a spherical holdfast, tubular sporangiophores and bulbous rhizoids. This new fungus also features distinctive multisporangiate thallus sympodially distributed on sporangiophores. The fungus resembles Caecomyces communis and C. equi in that it characterizes bulbous rhizoids and uniflagellate zoospores but differs from C. communis and C. equi in that it possesses multisporangiate and sympodial sporangia. This new fungus and Cyllamyces aberensis both reveal similar morphology during early thallus development in having a spherical holdfast, but they vary from unbranched sporangiophores and additional bulbous rhizoids. In addition, the molecular phylogenetic analyses ITS1 (internal transcribed spacer 1) also conform to the results of the morphological examinations of Caecomyces. For the mentioned reasons, this new species of fungus is described as Caecomyces sympodialis sp. nov. The genera of Neocallimasticaceae and species of Caecomyces are also keyed out.
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Fungal Group Zygomycota
Fungal Phylum Microsporidia
Fungal Phylum Basidiomycota
Fungal Phylum Ascomycota

