Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido
Siebold’s beech, Fagus crenata, is widely distributed across the Japanese Archipelago and islands in Japan Sea. Similar to the northern limit of the geographical distribution of F. crenata on the mainland of Hokkaido, the northern limit of the distribution of F. crenata on islands in the Japan Sea i...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-12-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fpls.2022.990927/full |
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| author | Keiko Kitamura Kanji Namikawa Yoshiaki Tsuda Makoto Kobayashi Tetsuya Matsui Tetsuya Matsui |
| author_facet | Keiko Kitamura Kanji Namikawa Yoshiaki Tsuda Makoto Kobayashi Tetsuya Matsui Tetsuya Matsui |
| author_sort | Keiko Kitamura |
| collection | DOAJ |
| description | Siebold’s beech, Fagus crenata, is widely distributed across the Japanese Archipelago and islands in Japan Sea. Similar to the northern limit of the geographical distribution of F. crenata on the mainland of Hokkaido, the northern limit of the distribution of F. crenata on islands in the Japan Sea is observed on Okushiri Island (ca 42°N). To understand the genetic relationships of F. crenata on Okushiri Island, we examined chloroplast (cp) DNA haplotypes and 11 nuclear microsatellite (SSR) loci among 1,838 individuals from 44 populations from Okushiri Island, mainland Hokkaido, and the northern part of the Tohoku region on Honshu Island. We identified 2 cpDNA haplotypes, which represent not only populations on the Japan Sea coast but also those on the Pacific coast and this suggested the Okushiri Island populations might not be formed by single colonization. Genetic diversity of the Okushiri Island populations of nuclear SSR was not lower than the mainland and the STRUCTURE analysis revealed the Okushiri Island individuals were admixed between Hokkaido and Tohoku clusters. Approximate Bayesian computation inferred that divergence between Tohoku and Hokkaido, and admixture between two populations which generated Okushiri populations occurred before the last glacial maximum (LGM), that is, 7,890 (95% hyper probability density (HPD): 3,420 – 9,910) and 3,870 (95% HPD: 431– 8,540) generations ago, respectively. These inferences were well supported by a geological history which suggested an isolation of Okushiri Island from Hokkaido started prior to the Middle Pleistocene. We discuss the possible persistence of F. crenata during the last glacial maximum on northern islands in the Japan Sea such as Okushiri Island. |
| first_indexed | 2024-04-11T12:51:27Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-11T12:51:27Z |
| publishDate | 2022-12-01 |
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| series | Frontiers in Plant Science |
| spelling | doaj.art-1816a198ef70457599359f348eb482902022-12-22T04:23:12ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2022-12-011310.3389/fpls.2022.990927990927Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, HokkaidoKeiko Kitamura0Kanji Namikawa1Yoshiaki Tsuda2Makoto Kobayashi3Tetsuya Matsui4Tetsuya Matsui5Hokkaido Research Centre, Forestry and Forest Products Research Institute, Sapporo, JapanBiological Laboratory, Hokkaido University of Education, Sapporo, JapanSugadaira Montane Research Center, University of Tsukuba, Ueda, JapanDepartment of Education and Culture, Echigo-Matsunoyama Museum of Natural Science, Tokamachi, JapanCenter of Biodiversity and Climate Change, Forestry and Forest Products Research Institute, Tsukuba, JapanFaculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, JapanSiebold’s beech, Fagus crenata, is widely distributed across the Japanese Archipelago and islands in Japan Sea. Similar to the northern limit of the geographical distribution of F. crenata on the mainland of Hokkaido, the northern limit of the distribution of F. crenata on islands in the Japan Sea is observed on Okushiri Island (ca 42°N). To understand the genetic relationships of F. crenata on Okushiri Island, we examined chloroplast (cp) DNA haplotypes and 11 nuclear microsatellite (SSR) loci among 1,838 individuals from 44 populations from Okushiri Island, mainland Hokkaido, and the northern part of the Tohoku region on Honshu Island. We identified 2 cpDNA haplotypes, which represent not only populations on the Japan Sea coast but also those on the Pacific coast and this suggested the Okushiri Island populations might not be formed by single colonization. Genetic diversity of the Okushiri Island populations of nuclear SSR was not lower than the mainland and the STRUCTURE analysis revealed the Okushiri Island individuals were admixed between Hokkaido and Tohoku clusters. Approximate Bayesian computation inferred that divergence between Tohoku and Hokkaido, and admixture between two populations which generated Okushiri populations occurred before the last glacial maximum (LGM), that is, 7,890 (95% hyper probability density (HPD): 3,420 – 9,910) and 3,870 (95% HPD: 431– 8,540) generations ago, respectively. These inferences were well supported by a geological history which suggested an isolation of Okushiri Island from Hokkaido started prior to the Middle Pleistocene. We discuss the possible persistence of F. crenata during the last glacial maximum on northern islands in the Japan Sea such as Okushiri Island.https://www.frontiersin.org/articles/10.3389/fpls.2022.990927/fullthe northernmost geographic rangechloroplast DNAnuclear SSRrefugiastructure |
| spellingShingle | Keiko Kitamura Kanji Namikawa Yoshiaki Tsuda Makoto Kobayashi Tetsuya Matsui Tetsuya Matsui Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido Frontiers in Plant Science the northernmost geographic range chloroplast DNA nuclear SSR refugia structure |
| title | Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido |
| title_full | Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido |
| title_fullStr | Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido |
| title_full_unstemmed | Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido |
| title_short | Possible northern persistence of Siebold’s beech, Fagus crenata, at its northernmost distribution limit on an island in Japan Sea: Okushiri Island, Hokkaido |
| title_sort | possible northern persistence of siebold s beech fagus crenata at its northernmost distribution limit on an island in japan sea okushiri island hokkaido |
| topic | the northernmost geographic range chloroplast DNA nuclear SSR refugia structure |
| url | https://www.frontiersin.org/articles/10.3389/fpls.2022.990927/full |
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