Morphological and Molecular Identification of Pythium aphanidermatum Causing Root Rot of Tomato in a Hydroponic Substrate Culture in the South Western Region of Japan

Abstract

Isolates of Pythium aphanidermatum from the rotted roots of tomatoes grown in a hydroponic substrate culture in the south western region of Japan were characterized based on morphology, hyphal growth temperature, and the sequences of their ITS-rDNA and mitochondrial cox2 gene regions.