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Ophiocordyceps sessilis sp. nov., a new species of Ophiocordyceps on Camponotus ants in Japan |
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| Authors: | Yoshitaka Kaitsu Kiminori Shimizu Eiji Tanaka Satoshi Shimano Shigeru Uchiyama Chihiro Tanaka Noriko Kinjo |
| Affiliation: | 1. Aoba-cho 52, Yanagawa-machi, Date, Fukushima, 960-0756, Japan 2. Medical Mycology Research Center, Chiba University, Inohana 1-8-1, Chuo-ku, Chiba, 260-8673, Japan 3. Ishikawa Prefectural University, Suematsu 1-308, Nonoichi, Ishikawa, 921-8836, Japan 4. Environmental Education Center, Miyagi University of Education, Aramaki 149, Aoba-ku, Miyagi, 980-0845, Japan 5. RIKEN Research Cluster for Innovation Nakamura Laboratory, Hirosawa 2-1, Wako, Saitama, 351-0198, Japan 6. Laboratory of Environmental Mycoscience, Graduate School of Agriculture, Kyoto University, Kitashirakawa-oiwake-cho, Sakyo-ku, Kyoto, 606-8502, Japan 7. College of Liberal Arts and Sciences, Tokyo Medical and Dental University, Kounodai 2-8-30, Ichikawa, Chiba, 272-0827, Japan |
| Abstract: | Ophiocordyceps sessilis, a new species of Ophiocordycipitaceae, Hypocreales, was found on Camponotus obscuripes ants, where the ants were primarily infected by another close relative, O. pulvinata. Morphological observation clearly indicated that O. sessilis and O. pulvinata are distinct species. Ophiocordyceps sessilis exhibited superficial development of perithecia and ascospore disarticulation into part-spores, not known in O. pulvinata. Nucleotide sequence data suggested that O. sessilis belongs in Ophiocordyceps, Ophiocordycipitaceae. Molecular data also indicated that O. sessilis is a close relative of O. cuboidea, O. prolifica, O. paracuboidea, and O. ryogamiensis, which are all known to produce part-spores. Since O. sessilis is always associated with ants infected by O. pulvinata, O. sessilis may be a hyperparasite of O. pulvinata. |
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