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http://dx.doi.org/10.4489/KJM.2016.44.3.196

First Report of Summer Patch Caused by Magnaporthiopsis poae on Cool Season Grass  

Han, Ju Ho (College of Agriculture and Life Sciences, Kyungpook National University)
Ahn, Chang Hyun (College of Agriculture and Life Sciences, Kyungpook National University)
Lee, Seung-Yeol (College of Agriculture and Life Sciences, Kyungpook National University)
Back, Chang-Gi (College of Agriculture and Life Sciences, Kyungpook National University)
Kang, In-Kyu (College of Agriculture and Life Sciences, Kyungpook National University)
Jung, Hee-Young (College of Agriculture and Life Sciences, Kyungpook National University)
Publication Information
The Korean Journal of Mycology / v.44, no.3, 2016 , pp. 196-200 More about this Journal
Abstract
Symptoms of summer patch were observed on Kentucky bluegrass (Poa pratensis L.) cv. "Midnight II" from mid-June in 2015 in Seoul, Korea. The symptoms appeared as leaf blight, root rot, and frog-eye patch, which are typical of summer patch. To identify the causal agent of these symptoms, a pathogen was isolated from diseased leaves and roots, and the cultural, morphological, and phylogenetic characteristics were analyzed. The isolate reached 50-60 mm on potato dextrose agar (PDA) after 10 days as a white-grey mycelium with septa, and became olive-green or brown from the center. Phialide-like structures were observed at the ends of hyphae, and conidia were rarely observed. A phylogenetic analysis was conducted based on large subunit (LSU) and RNA polymerase II large subunit (RPB1) sequences. According to this analysis, the isolated pathogen was confirmed to be Magnaporthiopsis poae. In a pathogenicity test, summer patch symptoms were observed at 20 days after inoculation using the same grass cultivar. This is the first report of summer patch disease caused by M. poae on cool season grass in Korea.
Keywords
Cool season grass; Kentucky bluegrass; Magnaporthiopsis poae; Summer patch;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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1 Kemp ML, Clarke BB, Funk CR. The susceptibility of fine fescues to isolates of Magnaporthe poae and Gaeumannomyces incrustans. Phytopathology 1990;80:978.
2 Landschoot PJ, Jackson N. Magnaporthe poae sp. nov., a hyphopodiate fungus with a Phialophora anamorph from grass roots in the United States. Mycol Res 1989;93:59-62.   DOI
3 Smiley RW, Dernoeden PH, Clarke BB. Compendium of turfgrass diseases. 2nd ed. St. Paul: American Phytophathological Society; 1992.
4 Tredway LP. First report of summer patch of creeping bentgrass caused by Magnaporthe poae in North Carolina. Plant Dis 2005;89:204.
5 Bassoriello MM, Jordan KS. First report of Magnaporthe poae, cause of summer patch disease on annual bluegrass in Canada. Plant Dis 2012;96:1698.
6 Liu Q, Liu M, Li T, Chen J, Zhang F, Hu J. First report of summer patch of Kentucky bluegrass caused by Magnaporthe poae in China. Plant Dis 2016. (in press)
7 Shim GY, Min GY, Shin HD, Lee HJ. Occurrence of fungicide resistance isolate caused by Sclerotinia homoeocarpa. Korean Turf Sci 2001;15:1-8.
8 Swift CE, Blessinger A, Brandt N, Tisserat N. First report of summer patch of Kentucky bluegrass caused by Magnaporthe poae in Colorado. Plant Dis 2007;91:1519.
9 Kackley KE, Grybauskas AP, Dernoeden PH, Hill RL. Role of drought stress in the development of summer patch in fieldinoculated Kentucky bluegrass. Phytopathology 1990;80:655-8.   DOI
10 Korean Society of Plant Pathology. List of plant diseases in Korea. 5th ed. Seoul: Korean Society of Plant Pathology; 2009.
11 Chang T, Lee YS. Occurrence of brown patch disease and turfgrass survival of cool season turfgrass cultivar in species during summer season. Korean Turf Sci 2010;24:117-24.
12 Min GY, Lee JH, Kwak YS. A detail investigation of major diseases occurrence and pathogen population on turfgrass cultivation in nationwide. Weed Turf Sci 2014;3:121-9.   DOI
13 Luo J, Zhang N. Magnaporthiopsis, a new genus in Magnaporthaceae (Ascomycota). Mycologia 2013;105:1019-29.   DOI
14 White TJ, Bruns TD, Lee SB, Taylor JW. Amplification and direct sequencing of fungal ribosomal RNA genes for phylogenetics. In: Innis MA, Gelfand DH, Sninsky JJ, editors. PCR protocols: a guide to methods and applications. San Diego: Academic Press; 1990. p. 315-22.
15 Klaubauf S, Tharreau D, Fournier E, Groenewald JZ, Crous PW, de Vries RP, Lebrun MH. Resolving the polyphyletic nature of Pyricularia (Pyriculariaceae). Stud Mycol 2014;79:85-120.   DOI
16 Phillips JM, Hayman DS. Improved procedures for clearing roots and staining parasitic and vesicular-arbuscular mycorrhizal fungi for rapid assessment of infection. Trans Br Mycol Soc 1970;55:158-61.   DOI