Pythiogeton zizaniae, a new species causing basal stalk rot of water bamboo in Taiwan.
A new species, Pythiogeton zizaniae, was isolated from diseased water bamboo (Zizania latifolia) in central Taiwan. The organism formed a colony with scanty mycelia and mycelial aggregates on rye-water bamboo medium. Special treatments were required for production of sporangia which were terminal, noncaducous and mostly ovoid. Chlamydospores were absent. The fungus was homothallic. Oogonia produced on V-8 water bamboo medium in water were mostly globose to subglobose and each was attached with a club-shaped, monoclinous antheridium by the base of the oogonium stalk. Oospores were plerotic and globose to subglobose. Py. zizaniae caused death of water bamboo suckers but did not infect seedlings of corn, rice, wheat, sorghum, cucumber, tomato, soybean or water spinach. It also did not affect cucumber and tomato fruit, carrot roots or potato tubers.
Ann
Pao-Jen
PJ
Plant Pathology Division, Taiwan Agricultural Research Institute, Wufeng, Taichung, Taiwan. pjann@wufeng.tari.gov.tw
Huang
Jin-Hsing
JH
Wang
In-Tin
IT
Ko
Wen-Hsiung
WH
D018553:Cucumis sativus / Q000382:microbiology; D018551:Solanum lycopersicum / Q000382:microbiology; D008853:Microscopy; D025282:Mycelium / Q000254:growth & development; D009868:Oomycetes / Q000145:classification* / Q000166:cytology / Q000302:isolation & purification* / Q000472:pathogenicity; D012275:Oryza / Q000382:microbiology; D010784:Photomicrography; D010935:Plant Diseases / Q000382:microbiology; D006109:Poaceae / Q000382:microbiology*; D036226:Seedlings / Q000382:microbiology; D013025:Glycine max / Q000382:microbiology; D018724:Spinacia oleracea / Q000382:microbiology; D013172:Spores, Fungal / Q000166:cytology; D013624:Taiwan; D014908:Triticum / Q000382:microbiology; D003313:Zea mays / Q000382:microbiology