Mycobiology.  2016 Dec;44(4):335-337. 10.5941/MYCO.2016.44.4.335.

New Rust Disease of Korean Willow (Salix koreensis) Caused by Melampsora yezoensis, Unrecorded Pathogen in Korea

Affiliations
  • 1Department of Microbiology, Dankook University, Cheonan 31116, Korea. piceae@dankook.ac.kr
  • 2Institute of Biodiversity, Dankook University, Cheonan 31116, Korea.

Abstract

During the growing season of 2015, leaf specimens with yellow rust spots were collected from Salix koreensis Andersson, known as Korean willow, in riverine areas in Cheonan, Korea. The fungus on S. koreensis was identified as the rust species, Melampsora yezoensis, based on the morphology of urediniospores observed by light and scanning electron microscopy, and the molecular properties of the internal transcribed spacer rDNA region. Pathogenicity tests confirmed that the urediniospores are the causal agent of the rust symptoms on the leaves and young stems of S. koreensis. Here, we report a new rust disease of S. koreensis caused by the rust fungus, M. yezoensis, a previously unrecorded rust pathogen in Korea.

Keyword

ITS; Melampsora yezoensis; Rust; Salix koreensis

MeSH Terms

Chungcheongnam-do
DNA, Ribosomal
Fungi
Korea*
Microscopy, Electron, Scanning
Salix*
Seasons
Virulence
DNA, Ribosomal
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