1. Caecomyces sympodialis sp. nov., a new rumen fungus isolated from Bos indicus
- Author
-
Hsueh-Ling Cheng, Yo-Chia Chen, Chiu-Yuan Chien, Tai-Yi Cheng, Sheng-Da Tsai, and Chun-Yi Hu
- Subjects
Rumen ,Physiology ,Zoospore ,Molecular Sequence Data ,Neocallimastigales ,Fungus ,DNA, Ribosomal ,Microbiology ,DNA, Ribosomal Spacer ,Botany ,Genetics ,Animals ,Anaerobiosis ,Internal transcribed spacer ,DNA, Fungal ,Molecular Biology ,Phylogeny ,Ecology, Evolution, Behavior and Systematics ,Holdfast ,biology ,Sporangium ,fungi ,Sequence Analysis, DNA ,Cell Biology ,General Medicine ,Spores, Fungal ,biology.organism_classification ,Sympodial ,Thallus ,Neocallimastigomycota ,Cattle - Abstract
A new anaerobic rumen fungus was iso- lated from the rumen fluid of a yellow cow (Bos indicus). This fungus appears to be a previously undescribed species of the genus Caecomyces ,i t possessing uniflagellate zoospores, a spherical hold- fast, tubular sporangiophores and bulbous rhizoids. This new fungus also features distinctive multispor- angiate thallus sympodially distributed on sporangio- phores. 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 multi- sporangiate 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 exam- inations of Caecomyces. For the mentioned reasons, this new species of fungus is described as Caecomyces sympodialis sp. nov. The genera of Neocallimastica- ceae and species of Caecomyces are also keyed out.
- Published
- 2007