First Report of Gymnosporangium globosum Causing American Hawthorn Rust in Korea

Yun, Hye Young; Lee, Kyung Joon; Kim, Young Ho; Lee, Seung Kyu

doi:2008.24.1.84

Plant Pathol J > Volume 24(1); 2008 > Article

The Plant Pathology Journal 2008;24(1):84-86.
DOI: https://doi.org/10.5423/PPJ.2008.24.1.084 Published online March 31, 2008.

First Report of Gymnosporangium globosum Causing American Hawthorn Rust in Korea

Hye Young Yun, Kyung Joon Lee, Young Ho Kim, Seung Kyu Lee

Abstract

Field surveys and specimen collections of the rust fungal pathogen Gymnosporangium were carried out for 15 years from 1985 through 1999 in various locations of Korea. Macroscopic and microscopic examinations of morphological characteristics of aecia from the collected specimens revealed that Gymnosporangium globosum is the causal agent of American hawthorn rust disease on Crataegus pinnatifida and C. pinnatifida var. major. The host plants are new for this rust fungus. G. globosum was found only in Gyeonggi and Chungbuk provinces, indicating that its distribution in Korea is limited. This is a first full description on morphological characters of aecia of G. globosum in Korea.

Key Words: aecial host, geographical distribution, Gymnosporangium globosum, morphological characteristics