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

Choi, Young-Joon and 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. ISSN 0929-1873


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.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Published version cannot be displayed due to copyright restrictions.
Faculty/School / Institute/Centre: Current - USQ Other
Faculty/School / Institute/Centre: Current - USQ Other
Date Deposited: 26 Nov 2019 05:53
Last Modified: 03 Jan 2020 01:17
Uncontrolled Keywords: Brassicaceae; cox2mtDNA; ITS rDNA; Quarantine; Species concept
Fields of Research (2008): 06 Biological Sciences > 0605 Microbiology > 060505 Mycology
Identification Number or DOI: https://doi.org/10.1007/s10658-017-1389-0
URI: http://eprints.usq.edu.au/id/eprint/36203

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