 Phylum：Chytridiomycota >> Class： Chytridiomycetes >> Order： Chytridiales |
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 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Catenochytridium carolinianum | |||
| Author： |
Catenochytridium carolinianum Berdan, Amer. J. Bot. 26:461. 1939. |
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| Description： |
On grass leaf: Sporangium extramatrical, eucarpic, operculate, spherical, ovoid, elliptical-shaped. Apophysis intramatrical, compound, consisting of linear series of constricted, catenulate segments. Rhizoidal system extentive, richly branched. Zoospores emerging in a globular mass and lying quescent for moments before swimming away. Resting spore spherical, with thick, wavy wall. On 1/4YpSs agar: Catenulate segments of apophysis arranged in 1-4 (occasionally 6) linear series attached to the primary apophysate cell. They vary in size and shape. When the apophysis is fully formed, the cytoplasm contains many globules. In normal development, all the contents of the rhizoids and apophysis pass out into the sporangium which is always in an extramatrical position. At maturity, the sporangia are spherical, pyriform, elliptical-shaped, 45-60 μm in diameter. Zoospores spherical, 5-6 μm in diameter. Operculum hinged and persistent. Resting spore never observed in culture. Color of colony yellowish brown. | |||
| Specimens： |
Taiwan. Yilan hsien, Shunglienpyi, water of pond, 3 Oct. 1992, NTNU 601g. Isolated on grass leaf from water. |
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| Habitat： |
Fresh water. | |||
| Distribution： |
USA, Canada, Taiwan. |
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| References： |
Berdan, HB. 1939; 1941; Chen, SF and Chien, CY. 1995. |
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| Provided： |
S. F. Chen |
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| Note： |
Apophysis catenulate segments is the main character of this species. Sporangial shape is variable, operculate. Thallus saprophytic in cellulose substrate and growth is slow. The development of thallus is similar to Berdan's (1941) description. Our isolate is different from that of Berdan's (1939) by the waved thick-wall of the resting spore. | |||