 Phylum：Chytridiomycota >> Class： Chytridiomycetes >> Order： Chytridiales |
||||
 BCRC Number： |
NO BCRC Number! | |||
| Scientific Name： |
Phlyctochytrium planicorne | |||
| Author： |
Phlyctochytrium planicorne Atkinson, Bot. Gaz. 48:337. 1909. |
|||
| Description： |
On pine pollen: Sporangium epibiotic, ovoid or pyriform, variable in size, 20-50 μm high, 15-58 μm in diameter, bearing a collarette of four (rarely 6) plain teeth around the discharge papilla. On 1/4YpSs agar: Sporangium subspherical or flask-shaped 40 × 45-70 × 85 μm, wall smooth, bearing four plain teeth at the apex. Considerable morphological variation is shown in the apophysis and the rhizoidal system. Thalli mostly had an apophysis, from fusiform to spherical; from the apophysis the main rhizoidal axis (or axes) diverges. Zoospores spherical 4-5 μm in diameter, with a single refractive globule. On dehiscence a portion of the apex of the sporangium dissolves; zoospores emerge in a vesicle for 3-5 min, then actively swim away or amoeboid. Color of colony buff to off-white. | |||
| Specimens： |
Taiwan. Taichung: Tungshih wooded land, water of lake, 6 Sep. 1994, NTNU 2303c. Isolated on pine pollen from water. |
|||
| Habitat： |
Fresh water. | |||
| Distribution： |
USA, Hungary, Japan, Taiwan. |
|||
| References： |
Canter, HM. 1961; Chen, SF and Chien, CY. 1995; Wang, PH and Chien, CY. 1992. |
|||
| Provided： |
S. F. Chen |
|||
| Note： |
Sporangial apical collarette of four plain teeth is a constant feature of this chytrid. This species has been recorded on a variety of filamentous green algae and planktonic algae (Canter, 1961), but our isolate is baited with pine pollen. | |||