VIEW ARTICLE

Chlamydospore Formation in Sporangium-free Liquid Cultures of Phytophthora parasitica. Peter H. Tsao, Professor, Department of Plant Pathology, University of California, Riverside 92502; Phytopathology 61:1412-1413. DOI: 10.1094/Phyto-61-1412.

Phytophthora parasitica produced abundant chlamydospores when mycelial mats grown at 25 C in a liquid medium were submerged in deep water and subsequently incubated for 2 to 3 weeks at 15 to 18 C. Chlamydospore production was poor if incubation temperature was 24 C or above. Formation of sporangia was prevented due to reduced aeration in submerged cultures.