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Peronospora bulbocapni, an Unreported Species Causing Downy Mildew on Corydalis ambigua in Korea

  • 투고 : 2018.11.27
  • 심사 : 2018.11.28
  • 발행 : 2018.12.01

초록

Peronospora is the largest genus of the order Peronosporales (Oomycota) and contains more than 550 accepted species, which causes downy mildew on many economically important crops. During a survey of downy mildew flora in Korea, a previously unreported species of Peronospora has been found on Corydalis ambigua. Based on molecular phylogenetic and morphological analyses, the causal agent was identified as Peronospora bulbocapni. This is the first report of Peronospora bulbocapni occurring on Corydalis ambigua in Korea.

키워드

GNHHDL_2018_v46n4_505_f0001.png 이미지

Fig. 1. Peronospora bulbocapni occurring on Corydalis ambigua. A~C, Conidiophores; D~G, Ultimate branchlets; H~K, Conidia; L~N, Resting organs (scale bars: A~C = 50 μm, D~K = 10 μm, L~N = 20 μm)

GNHHDL_2018_v46n4_505_f0002.png 이미지

Fig. 2. Minimum evolution tree of Peronospora species using the internal transcribed spacer rDNA sequences. Bootstrapping values (minimum evolution BP/ maximum likelihood BP) higher than 70% are shown above the branches (1,000 replicates). The scale bar equals the number of nucleotide substitutions per site

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