DOI: 10.1016/j.foreco.2013.05.026
Scopus记录号: 2-s2.0-84879526232
论文题名: Recent distribution changes affect geographic clines in genetic diversity and structure of Pinus densiflora natural populations in Japan
作者: Iwaizumi M.G. ; Tsuda Y. ; Ohtani M. ; Tsumura Y. ; Takahashi M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 304 起始页码: 407
结束页码: 416
语种: 英语
英文关键词: Bottleneck
; Genetic diversity
; Genetic resources
; Genetic structure
; Nuclear SSR
; Pinus densiflora
Scopus关键词: Bottleneck
; Genetic diversity
; Genetic resources
; Genetic structure
; Nuclear SSR
; Pinus densiflora
; Biodiversity
; Climate change
; Forestry
; Genes
; Geographical distribution
; Plants (botany)
; Population distribution
; anthropology
; climate change
; coniferous tree
; disturbance
; genetic drift
; genetic marker
; genetic resource
; genetic structure
; genetic variation
; genome
; geographical distribution
; heterozygosity
; human activity
; mountain region
; paleoecology
; population bottleneck
; population growth
; Biodiversity
; Forestry
; Genetic Engineering
; Japan
; Pinus Densiflora
; Seasonal Variation
; Japan
英文摘要: Geographic patterns of genetic diversity of widespread tree species with a disturbance-dependent distribution can be influenced by not only past climate change but also disturbance by human activities. This is especially true for species that are dominant mainly in semi-mountainous areas and near human habitation, and also available for forestry. Pinus densiflora is both an economically and ecologically important conifer in semi-mountainous forest landscapes of Japan, and information on its genetic variation is essential for designing programs to manage its natural genetic resources and breeding zones. The geographic pattern of genetic diversity and structure of 62 P. densiflora populations (a total of 1883 trees) across their natural distribution in Japan was examined using eight nuclear microsatellite markers. We found that the allelic richness was somewhat, but significantly, lower in both northern and eastern marginal populations. Analysis of recent bottlenecks detected a significant heterozygosity excess more frequently in the northern and eastern populations. The overall value of the standardized measure of population differentiation was moderate (GST'=0.122) and similar both to other widespread Japanese tree species and to continental Pinus species. STRUCTURE software analysis revealed a gradual cline in the genetic structure, with three main clusters corresponding to the western, central and northeastern populations; the northeastern cluster showed the highest F value. These results indicated strong genetic drift in the past through rapid population expansion of P. densiflora in northeastern Japan, related to progress in agriculture suggested by anthropological and paleoecological studies. Results obtained on this neutral genetic variation in the nuclear genome should provide fundamental information for designing conservation units and breeding zones and in light of evaluation of its adaptive genetic variation in future studies. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66490
Appears in Collections: 影响、适应和脆弱性
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作者单位: Kansai Regional Breeding Office, Forest Tree Breeding Center, Forestry and Forest Products Research Institute, 1043, Uetsukinaka, Shoo, Katsuta, Okayama 709-4335, Japan; Department of Plant Ecology and Evolution, Evolutionary Biology Centre, Uppsala University, Norbyvägen 18D, 75236 Uppsala, Sweden; Genetic Resources Department, Forest Tree Breeding Center, Forestry and Forest Products Research Institute, 3809-1, Ishii, Juo, Hitachi, Ibaraki 319-1301, Japan; Department of Forest Genetics, Forestry and Forest Products Research Institute, 1, Matsunosato, Tsukuba, Ibaraki 305-8687, Japan; Breeding Department, Forest Tree Breeding Center, Forestry and Forest Products Research Institute, 3809-1, Ishii, Juo, Hitachi, Ibaraki 319-1301, Japan
Recommended Citation:
Iwaizumi M.G.,Tsuda Y.,Ohtani M.,et al. Recent distribution changes affect geographic clines in genetic diversity and structure of Pinus densiflora natural populations in Japan[J]. Forest Ecology and Management,2013-01-01,304