Hyaloperonospora erucae sp. nov. (Peronosporaceae; Oomycota), the downy mildew pathogen of arugula (Eruca sativa)

Article

Choi, Young-Joon, Kruse, Julia and Thines, Marco. 2018. "Hyaloperonospora erucae sp. nov. (Peronosporaceae; Oomycota), the downy mildew pathogen of arugula (Eruca sativa)." European Journal of Plant Pathology. 151 (2), pp. 549-555. https://doi.org/10.1007/s10658-017-1389-0
Article Title

Hyaloperonospora erucae sp. nov. (Peronosporaceae;
Oomycota), the downy mildew pathogen of arugula
(Eruca sativa)

ERA Journal ID2587
Article CategoryArticle
AuthorsChoi, Young-Joon (Author), Kruse, Julia (Author) and Thines, Marco (Author)
Journal TitleEuropean Journal of Plant Pathology
Journal Citation151 (2), pp. 549-555
Number of Pages7
Year2018
PublisherSpringer
Place of PublicationNetherlands
ISSN0929-1873
1573-8469
Digital Object Identifier (DOI)https://doi.org/10.1007/s10658-017-1389-0
Web Address (URL)https://link.springer.com/article/10.1007%2Fs10658-017-1389-0
Abstract

Arugula (or rocket; Eruca sativa) is a popular leafy vegetable often used as a salad. Downy mildew disease poses a major threat to the cultivation of this crop. Along with a quick expansion of the cultivated land of arugula, significant losses due to this disease are continuously reported worldwide. Previous studies have attributed arugula downy mildew to Hyaloperonospora parasitica (previously classified under Peronospora), applying a broad species concept, or to Peronospora erucastri, but the identity of that the causal agent is still unproven. Based on both morphology and molecular phylogeny, the arugula pathogen is revealed to be distinct from the above two species in the current study. Consequently, Hyaloperonospora erucae sp. nov. is described and illustrated, and P. erucastri affecting Erucastrum spp. is transferred to the genus Hyaloperonospora as H. erucastri comb. nov., based on morphology and phylogenetic position.

KeywordsBrassicaceae; cox2mtDNA; ITS rDNA; Quarantine; Species concept
ANZSRC Field of Research 2020310705. Mycology
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Byline AffiliationsSenckenberg Biodiversity and Climate Research Centre, Germany
Institution of OriginUniversity of Southern Queensland
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