Development of microsatellite markers for the endangered orchid Calanthe izu-insularis (Orchidaceae)

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  • Nakahama Naoyuki
    Graduate School of Arts and Sciences, The University of Tokyo Graduate School of Agriculture, Kyoto University
  • Ito Azusa
    Graduate School of Agriculture, Kyoto University
  • Kaneko Shingo
    Graduate School of Agriculture, Kyoto University Division of Environment System Management, Fukushima University
  • Matsuki Yu
    Kawatabi Field Science Center, Graduate School of Agricultural Science, Tohoku University
  • Suyama Yoshihisa
    Kawatabi Field Science Center, Graduate School of Agricultural Science, Tohoku University
  • Hayano Azusa
    Graduate School for Health Care Science, Kyoto Prefectural University of Medicine Wildlife Research Center of Kyoto University
  • Murayama Miho
    Wildlife Research Center of Kyoto University
  • Isagi Yuji
    Graduate School of Agriculture, Kyoto University

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  • Development of microsatellite markers for the endangered orchid <i>Calanthe izu-insularis</i> (Orchidaceae)
  • Development of microsatellite markers for endangered orchid Calanthe izu-insularis (Orchidaceae)

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<p>Microsatellite markers were developed for the endangered orchid Calanthe izu-insularis (Orchidaceae). This species is unique to the Izu Islands in Japan. Unfortunately, its population size has decreased because of excessive collection for horticultural purposes. In addition, although natural hybridization between C. izu-insularis and C. discolor var. discolor has been reported, morphological differences between C. izu-insularis and the hybridized individuals remain unclear. Using next-generation sequencing, 11 polymorphic microsatellite markers were developed. All developed markers could amplify C. aristulifera and nine markers could amplify C. d. var. discolor, two other orchid species that are also endangered in Japan. The number of alleles and expected heterozygosity at each locus were 1–6 (mean, 2.35) and 0.00–0.79 (mean, 0.30), respectively. These microsatellite markers will help conservation geneticists in their investigation of the proportion of pure C. izu-insularis individuals in the Izu Islands.</p>

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