著者

Kazutoshi Masuda Hiroaki Setoguchi Koki Nagasawa Shigeru Fukumoto Masae Iwamoto Ishihara Rei-ichi Miura Leiko Mizusawa Ken-ichi Hiratsuka Shota Sakaguchi

出版者

The Genetics Society of Japan

雑誌

Genes & Genetic Systems (ISSN:13417568)

巻号頁・発行日

pp.21-00021, (Released:2021-06-18)

参考文献数

20

被引用文献数

1

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Arnica mallotopus is a perennial herb endemic to the snowy regions of Japan. At the southern edge of its distribution, in Kyoto Prefecture, overgrazing by sika deer and decreased snowfall have resulted in the rapid decline of A. mallotopus populations. Therefore, there is an urgent need for a conservation genetic analysis of the remaining local populations. In this study, we first developed 13 EST-SSR markers to evaluate genetic variation in A. mallotopus. The average number of alleles per locus was 5.33. Genetic analysis using these markers showed that the investigated samples were classified into two groups corresponding to landscape structure. One group isolated from a tributary of the Yura River showed a strong population bottleneck signal, likely resulting from founder effects and subsequent drifts. On the other hand, the genetic diversity of the second group in the main distribution along the Yura River was higher and less inbred. Overall, our assessment suggested recognizing the two genetic groups as management units in conservation programs for the threatened populations.

著者

Riku Nakamasu Shota Sakaguchi Hiroaki Setoguchi

出版者

The Japanese Society for Plant Systematics

雑誌

Acta Phytotaxonomica et Geobotanica (ISSN:13467565)

巻号頁・発行日

vol.71, no.1, pp.73-76, 2020-02-29 (Released:2020-03-17)

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A set of 8 polymorphic EST-SSR markers has been developed to evaluate the genetic diversity and genetic structure of the populations of Tricyrtis sect. Tricyrtis (Liliaceae) in Kyushu, which reproduces sexually and asexually by bulbils. The total number of alleles for each locus ranged from 2 to 11 with an average of 5.5, while the values of observed and expected heterozygosity ranged from 0.043 to 0.875 and 0.043 to 0.849, respectively. The combined probabilities of identity (PI = 6.0E-07 and PI-Sib = 2.7E-03) of these markers suggest that they are useful for not only evaluating genetic diversity but also for estimating clonal diversity within populations. Cross-species amplification was evaluated for three phylogenetically related species, T. macropoda, T. setouchiensis, and T. affinis, to show that all the EST-SSR markers are transferrable among these species.