Mycobiology.  2011 Sep;39(3):230-232.

Occurrence of Sclerotium Rot in Allium tuberosum Caused by Sclerotium rolfsii in Korea

• Kwon JH
• Kang DW
• Song WD
• Choi O

Abstract

In this study, we characterized sporadically occurring sclerotium rot caused by Sclerotium rolfsii in Chinese chive (Allium tuberosum Roth.) in farm fields in Sacheon, Korea. The initial symptom of the disease was water-soaked, which progressed to rotting, wilting, blighting, and eventually death. Further, mycelial mats spread over the lesions near the soil line, and sclerotia formed on the scaly stem and leaves. The sclerotia were globoid, 1~3 mm, and white to brown. The optimum temperature for growth and sclerotia formation on potato dextrose agar (PDA) was 30degrees C. The diameter of the hypae ranged from 4 to 8 microm. Clamp connection was observed on PDA medium after 5 days of incubation. Based on the mycological characteristics, internal transcribed spacer sequence analysis, and pathogenicity test, the causal agent was identified as Sclerotium rolfsii Saccardo. This is the first report of sclerotium rot in Chinese chive caused by S. rolfsii in Korea.

Keyword

Chinese chive; Sclerotium rolfsii; Sclerotium rot

MeSH Terms

Agar
Allium
Allyl Compounds
Chive
Glucose
Humans
Korea
Sequence Analysis
Soil
Solanum tuberosum
Sulfides
Agar
Allyl Compounds
Glucose
Soil
Sulfides