한국균학회지 (The Korean Journal of Mycology)

  • 제52권2호
  • /
  • Pages.145-153
  • /
  • 2024
  • /
  • 0253-651X(pISSN)
  • /
  • 2383-5249(eISSN)
한국균학회 (The Korean Society of Mycology)
권호 표지
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Peltaster fructicola: Undescribed Sooty Blotch and Flyspeck Species on Apple Fruit in Korea

  • Jun-Woo Choi (Department of Plant Medicine, Kyungpook National University) ;
  • Seong-Keun Lim (Department of Plant Medicine, Kyungpook National University) ;
  • Seo-Ryeong Lee (Department of Plant Medicine, Kyungpook National University) ;
  • Chang-Gi Back (Department of Environmental Horticulture and Landscape Architecture, Environmental Horticulture, Dankook University) ;
  • In-Kyu Kang (Department of Horticultural Science, Kyungpook National University) ;
  • Seung-Yeol Lee (Department of Plant Medicine, Kyungpook National University) ;
  • Hee-Young Jung (Department of Plant Medicine, Kyungpook National University)
  • 투고 : 2024.06.04
  • 심사 : 2024.06.24
  • 발행 : 2024.06.30
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초록

While investigation of the fungal diseases on apples collected from Cheongsong-gun and Bonghwa-gun in Gyeongbuk province, Korea, between August and September 2023 isolated five fungal strains from fruits with sooty blotch and flyspeck (SBFS) disease. The strains were designated as KNUF-23-CS02, KNUF-23-CS-06, KNUF-23-CS12, KNUF-23-BH01, and KNUF-23-BH03. When grown on potato dextrose agar and 2% water agar, the cultural characteristics of the strains were similar to those previously reported characteristics of Peltaster fructicola Pf001. The strains produced monoblastic, hyaline conidiogenous cells; the conidia were hyaline, unicellular, cylindrical to ovoidal, and 3.5-7×1.7-3.9 and 4.0-6.6×1.8-3.2 μm in size on synthetic nutrient-poor agar or water agars, respectively. Secondary conidia production by microcyclic conidiation and budding was observed. The KNUF-23-BH03 strain was shown to cause SBFS symptoms similar to those observed on the apples in the pathogenicity test. Molecular phylogenetic analyses were conducted based on the isolated species sequences of the internal transcribed spacer region, nuclear large ribosomal DNA subunit, and mitochondrial small ribosomal RNA subunit gene. The five strains were clustered with Peltaster fructicola Pf001. Based on the cultural and morphological characteristics and phylogenetic analysis, the five strains were identified as Peltaster fructicola, which has not been previously reported in Korea.

키워드

과제정보

This research was carried out with the support of "Cooperative Research Program for Agriculture Science and Technology Development (Project No. RS-2021-RD010123)" Rural Development Administration, Republic of Korea.

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