Root Rot of Cinnamomum camphora (Linn) Presl Caused by Phytopythium vexans in China.

ABSTRACT: As a famous street tree, camphor (Cinnamomum camphora) is widely planted worldwide. However, in recent years, camphor with root rot was observed in Anhui Province, China. Based on morphological characterization, thirty virulent isolates were identified as Phytopythium species. Phylogenetic analysis of combined ITS, LSU rDNA, β-tubulin, coxI, and coxII sequences assigned the isolates to Phytopythium vexans. Koch's postulates were fulfilled in the greenhouse, and the pathogenicity of P. vexans was determined by root inoculation tests on 2-year-old camphor seedlings; the symptoms of indoor inoculation were consistent with those in the field. P. vexans can grow at 15-30 °C, with an optimal growth temperature of 25-30 °C. The

SUBMITTER: Xiao Y 

PROVIDER: S-EPMC10005500 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature