Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon
The genus Pseudoperonospora, an obligate biotrophic group of Oomycota, causes the most destructive foliar downy mildew disease on many economically important crops and wild plants. A previously unreported disease by Pseudoperonospora was found on oriental pickling melon (Cucumis melo var. conomon) i...
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doaj-51b9c594351b49f4b9d4cb4c8a69732d2021-05-06T15:44:46ZengTaylor & Francis GroupMycobiology1229-80932092-93232021-03-0149218819510.1080/12298093.2021.18803101880310Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling MelonDong Jae Lee0Jae Sung Lee1Young-Joon Choi2Department of Biology, Kunsan National UniversityDepartment of Biology, Kunsan National UniversityDepartment of Biology, Kunsan National UniversityThe genus Pseudoperonospora, an obligate biotrophic group of Oomycota, causes the most destructive foliar downy mildew disease on many economically important crops and wild plants. A previously unreported disease by Pseudoperonospora was found on oriental pickling melon (Cucumis melo var. conomon) in Korea, which is a minor crop cultivated in the temperate climate zone of East Asia, including China, Korea, and Japan. Based on molecular phylogenetic and morphological analyses, the causal agent was identified as Pseudoperonospora cubensis, and its pathogenicity has been proven. Importantly, two phylogenetic clades of P. cubensis, harboring probably two distinct species, were detected within the same plots, suggesting simultaneous coexistence of the two clades. This is the first report of P. cubensis causing downy mildew on oriental pickling melon in Korea, and the confirmation of presence of two phylogenetic clades of this pathogen in Korea. Given the high incidence of P. cubensis and high susceptibility of oriental pickling melon to this disease, phytosanitary measures, including rapid diagnosis and effective control management, are urgently required.http://dx.doi.org/10.1080/12298093.2021.1880310cox2 mtdnadowny mildewphylogenetic analysispseudoperonospora humuli |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Dong Jae Lee Jae Sung Lee Young-Joon Choi |
spellingShingle |
Dong Jae Lee Jae Sung Lee Young-Joon Choi Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon Mycobiology cox2 mtdna downy mildew phylogenetic analysis pseudoperonospora humuli |
author_facet |
Dong Jae Lee Jae Sung Lee Young-Joon Choi |
author_sort |
Dong Jae Lee |
title |
Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon |
title_short |
Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon |
title_full |
Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon |
title_fullStr |
Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon |
title_full_unstemmed |
Co-Occurrence of Two Phylogenetic Clades of Pseudoperonospora cubensis, the Causal Agent of Downy Mildew Disease, on Oriental Pickling Melon |
title_sort |
co-occurrence of two phylogenetic clades of pseudoperonospora cubensis, the causal agent of downy mildew disease, on oriental pickling melon |
publisher |
Taylor & Francis Group |
series |
Mycobiology |
issn |
1229-8093 2092-9323 |
publishDate |
2021-03-01 |
description |
The genus Pseudoperonospora, an obligate biotrophic group of Oomycota, causes the most destructive foliar downy mildew disease on many economically important crops and wild plants. A previously unreported disease by Pseudoperonospora was found on oriental pickling melon (Cucumis melo var. conomon) in Korea, which is a minor crop cultivated in the temperate climate zone of East Asia, including China, Korea, and Japan. Based on molecular phylogenetic and morphological analyses, the causal agent was identified as Pseudoperonospora cubensis, and its pathogenicity has been proven. Importantly, two phylogenetic clades of P. cubensis, harboring probably two distinct species, were detected within the same plots, suggesting simultaneous coexistence of the two clades. This is the first report of P. cubensis causing downy mildew on oriental pickling melon in Korea, and the confirmation of presence of two phylogenetic clades of this pathogen in Korea. Given the high incidence of P. cubensis and high susceptibility of oriental pickling melon to this disease, phytosanitary measures, including rapid diagnosis and effective control management, are urgently required. |
topic |
cox2 mtdna downy mildew phylogenetic analysis pseudoperonospora humuli |
url |
http://dx.doi.org/10.1080/12298093.2021.1880310 |
work_keys_str_mv |
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