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Rediscovery of Seven Long-Forgotten Species of Peronospora and Plasmopara (Oomycota)

Mycobiology 2020년 48권 5호 p.331 ~ 340
이재성, 신현동, 최영준,
소속 상세정보
이재성 ( Lee Jae-Sung ) - Kunsan National University Department of Biology
신현동 ( Shin Hyeon-Dong ) - Korea University College of Life Sciences and Biotechnology Division of Environmental Science and Ecological Engineering
최영준 ( Choi Young-Joon ) - Kunsan National University Department of Biology

Abstract


The family Peronosporaceae, an obligate biotrophic group of Oomycota, causes downy mildew disease on many cultivated and ornamental plants such as beet, cucumber, grape, onion, rose, spinach, and sunflower. To investigate the diversity of Peronosporaceae species in Korea, we performed morphological analysis for dried plant herbariums with downy mildew infections by two largest genera, Peronospora and Plasmopara. As a result, it was confirmed that there are five species of Peronospora and two species of Plasmopara, which have been so far unrecorded in Korea, as well as rarely known in the world; Pl. angustiterminalis (ex Xanthium strumarium), Pl. siegesbeckiae (ex Siegesbeckia glabrescens), P. chenopodii-ambrosioidis (ex Chenopodium ambrosioides), P. chenopodii-ficifolii (ex Chenopodium ficifolium), P. clinopodii (ex Clinopodium cf. vulgare), P. elsholtziae (ex Elsholtzia ciliata), and P. lathyrina (ex Lathyrus japonicus). In addition, their phylogenetic relationship was inferred by molecular sequence analysis of ITS, LSU rDNA, and cox2 mtDNA. By rediscovering the seven missing species and barcoding their DNA sequences, this study provides valuable insights into the diversity and evolutionary studies of downy mildew pathogens.

키워드

Barcoding; downy mildew; morphology; Peronosporaceae; phylogenetic analysis

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