Abstract
Abstract A description is provided for Phytophthora clandestina . Information is included on the disease caused by the organism, its transmission, geographical distribution, and hosts. HOSTS: Trifolium subterraneum . DISEASE: Root rot of subterranean clover; a facultatively necrotrophic plant pathogen. In field plants, black necrotic lesions develop 1-4 cm below the soil surface extending into the stele and causing orange-brown to brown tissue discoloration. Dry matter can be reduced by 71% (69, 5030). GEOGRAPHICAL DISTRIBUTION: Australasia & Oceania; Australia (NSW, WA, Vic.) TRANSMISSION: Presumably by zoospores released in moist soil. Oospores may act as perennating structures.
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