Taxonomy and phylogeny of Peronospora species (Oomycota) parasitic to Stellaria and Pseudostellaria in Korea, with the introduction of Peronospora casparyi sp. nov.

Jae Sung Lee, Hyeon Dong Shin, Hyang Burm Lee, Young Joon Choi

    Research output: Contribution to journalArticlepeer-review

    1 Citation (Scopus)

    Abstract

    The genus Peronospora, an obligate biotrophic group belonging to Oomycota, causes serious damage to a variety of wild and ornamental plants, as well as cultivated crops, such as beet, rose, spinach, and tobacco. To investigate the diversity of Peronospora species parasitic to Stellaria and Pseudostellaria (Caryophyllaceae) plants in Korea, we performed a morphological analysis on dried herbarium specimens and molecular phylogenetic inferences based on internal transcribed spacer rDNA and cox2 mitochondrial DNA sequences. As a result, it was confirmed that there are four species of Peronospora parasitic to specific species of Stellaria and Pseudostellaria, all of which were hitherto unrecorded in Korea: P. alsinearum (ex Stellaria media), P. stellariae-aquaticae (ex Stellaria aquatica), P. stellariae-uliginosae (ex Stellaria alsine), and P. pseudostellariae (ex Pseudostellaria palibiniana). In addition, Peronospora specimens parasitic to Pseudostellaria davidii differed morphologically from P. pseudostellariae owing to the large and ellipsoidal conidia; this morphological discrepancy was also validated by the high genetic divergence between the two species. Peronospora casparyi sp. nov. is described and illustrated here.

    Original languageEnglish
    Pages (from-to)263-269
    Number of pages7
    JournalMycobiology
    Volume45
    Issue number4
    DOIs
    Publication statusPublished - 2017 Dec 1

    Bibliographical note

    Publisher Copyright:
    © The Korean Society of Mycology.

    Keywords

    • Barcoding
    • Caryophyllaceae
    • Cox2
    • Diversity
    • Host specificity

    ASJC Scopus subject areas

    • Microbiology
    • Infectious Diseases

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