Mycoscience (2009) 50, 281-290

Shihomi Uzuhashi, Motoaki Tojo, Sakura Kobayashi and Makoto Kakishima (2009)
Pythium apinafurcum: its morphology, molecular phylogeny, and infectivity for plants
Mycoscience 50 (4), 281-290
Abstract: During a survey of Pythium species in soils of Japan, Pythium isolates growing at high temperatures were obtained from an uncultivated field soil in Wakayama Prefecture. All six isolates showed similar morphology to each other and had complexly branched secondary hyphae, globose nonproliferating sporangia, and smooth-surfaced oogonia that have one or two oospores per oogonium. The combination of these characteristics differentiated these isolates from other Pythium species reported. Phylogenetic analyses based on sequences of the ribosomal DNA ITS and D1/D2 region of the large subunit showed that all Pythium isolates were clustered in a single clade that was distantly related to other known clades of the genus. We described these isolates as a new Pythium species, Pythium apinafurcum, based on morphology and molecular phylogeny. The P. apinafurcum isolates nonsymptomatically infected the roots of seedlings of bermudagrass, cabbage, and cucumber in a pot inoculation test.
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Link to article at publishers website
Database assignments for author(s): Shihomi Uzuhashi, Makoto Kakishima, Motoaki Tojo

Research topic(s) for pests/diseases/weeds:
general biology - morphology - evolution
identification/taxonomy

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Pythium apinafurcum		Japan