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Plants 2018, 7(3), 73; https://doi.org/10.3390/plants7030073

Life Cycle and Genetic Diversity of Symplocarpus nipponicus (Araceae), an Endangered Species in Japan

1
Graduate School of Life and Environmental Sciences, Kyoto Prefectural University, Hangi-cho 1-5, Shimogamo, Sakyo-ku, Kyoto 606-8522, Japan
2
Biotechnology Research Department, Kyoto Prefectural Agriculture Forestry and Fisheries Technology Center, Kitaina-yazuma Oji 74, Seika, Soraku-gun, Kyoto 619-0244, Japan
3
Villages at the Source of a River in Mitsuno, Ayabe, Kyoto 623-1133, Japan
*
Author to whom correspondence should be addressed.
Received: 16 August 2018 / Revised: 7 September 2018 / Accepted: 9 September 2018 / Published: 11 September 2018
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Abstract

Symplocarpus nipponicus, a member of the Araceae family, is an endangered plant in several prefectures in Japan. For the conservation of this wild species, we investigated the morphology, life cycle, and genetic diversity of three wild populations. By fixed-point observation over several years, we found that it takes at least four years for the plant to set the inflorescences consisting of spadices and spathes, and another two years for it to set mature seeds. To examine the genetic diversity in the wild population, we developed 11 novel microsatellite markers and investigated the genetic variation in three populations in Kyoto Prefecture: Ayabe, Hanase, and Momoi. The Ayabe population carried less genetic variation than the other two areas, suggesting the isolation of the habitat and thus a higher risk of extinction. Our results provide basic knowledge of the ecological aspects of S. nipponicus, as well as molecular techniques for the assessment of its genetic diversity, and thus are useful for the conservation of this endangered species. View Full-Text
Keywords: Araceae; genetic diversity; life cycle; microsatellite; Symplocarpus nipponicus Araceae; genetic diversity; life cycle; microsatellite; Symplocarpus nipponicus
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Takeda, S.; Onishi, Y.; Fukui, Y.; Ohsako, T.; Kubo, N. Life Cycle and Genetic Diversity of Symplocarpus nipponicus (Araceae), an Endangered Species in Japan. Plants 2018, 7, 73.

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