- 著者
- TAKASHI YAMASAKI KEICHI OZEKI NORIYUKI FUJII MARI TAKEHARA MASASHI YOKOGAWA SHINGO KANEKO YUJI ISAGI
- 出版者
- The Japanese Society for Plant Systematics
- 雑誌
- Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
- 巻号頁・発行日
- vol.63, no.3, pp.107-120, 2013-04-05 (Released:2017-03-21)
- 参考文献数
- 73
Silene kiusiana (Caryophyllaceae) is an endangered perennial herb of semi-natural grasslands in Japan and Korea. To elucidate the genetic status of S. kiusiana in the Aso region, Kyushu, Japan, in which relatively large populations still remain, we analyzed the genetics of seven populations of S. kiusiana using five novel microsatellite markers. Each population of S, kiusiana has maintained relatively high genetic diversity (mean H_E = 0.791 and mean N_A =12.0). In addition, the values of pairwise F_<ST> indicating the degree of genetic differentiation among populations were significantly larger than zero between all pairs of populations, although the degrees of difference were small. The semi-natural grasslands in the Aso region have decreased in size over the past several decades, and thus habitat fragmentation may have caused genetic differentiation among populations of S. kiusiana. Although the populations of S. kiusiana have maintained relatively high genetic diversity, the genetic dynamics of S. kiusiana populations should be continuously monitored.
- 著者
- Noriyuki Fujii Satoshi Takasawa Masashi Yokogawa Takashi Yamasaki Kensuke Harada Shingo Kaneko Yuji Isagi
- 出版者
- The Japanese Society for Plant Systematics
- 雑誌
- Acta Phytotaxonomica et Geobotanica (ISSN:13467565)
- 巻号頁・発行日
- vol.67, no.2, pp.69-82, 2016 (Released:2016-12-20)
Veronicastrum sibiricum var. zuccarinii (Plantaginaceae) is an endangered perennial herb native to semi-natural grasslands in southern Korea and Kyushu, Japan. To elucidate the genetic status of V. sibiricum var. zuccarinii in the Aso region of Kyushu, in which relatively large populations still remain, we analyzed seven populations using five novel microsatellite markers. Each population of V. sibiricum var. zuccarinii has a maintained moderate level of genetic diversity (mean H E = 0.596, mean N A = 5.6, and mean AR = 4.7). Pairwise F ST indicated significant genetic differentiation between all population pairs (0.065−0.309). The semi-natural grasslands in the Aso region have decreased in area over the past decades. Thus, habitat fragmentation may be causing genetic differentiation among populations of V. sibiricum var. zuccarinii. Although the populations of this variety have maintained a moderate degree of genetic diversity, the dynamics of gene flow among them should be continuously monitored.