Mating system patterns of natural populations of Pinus koraiensis along its post-glacial colonization route in northeastern China | |
Han, S. J.4; Sui, X.2,3; Feng, F. J.2; Zhao, D.2; Xing, M.2; Sun, X. Y.2; Li, M. H.1,4 | |
刊名 | GENETICS AND MOLECULAR RESEARCH |
2015 | |
卷号 | 14期号:2页码:4113-4124 |
关键词 | Inbreeding Depression Outbreeding Depression Genetic Diversity Chloroplast Simple Sequence Repeat Endangered Species |
ISSN号 | 1676-5680 |
DOI | 10.4238/2015.April.27.26 |
英文摘要 | To understand the genetic mechanisms underlying the endangerment of Pinus koraiensis, we studied the mating system of 49 families of this species in 3 natural populations along its postglacial colonization route across similar to 1500 km in northeastern China using the chloroplast simple sequence repeat technique. We analyzed 11 polymorphic loci with clear and repeating bands, and we calculated the multi-locus outcrossing rate (t(m)), single-locus outcrossing rate, inbreeding index, and fixation index (F). Intra-population variation was not observed, but a large inter-population variation was observed in the outcrossing rate, and the t(m) increased from 0.767 (the south population) to 0.962 (the north population) along the post-glacial colonization route. The t(m) values within a population did not change with time over 2 consecutive years. The F values for the 3 populations were <0, which indicates an excess of heterozygotes. The mean effective number of alleles, Shannon diversity index, and Nei's genetic diversity index did not show a south-north pattern. The north population had the highest outcrossing rate but the lowest genetic diversity. The average genetic differentiation of P. koraiensis populations was 0.1251, which was within the average range of woody plants with outcrossing and wind pollination. This study suggests that the current endangerment of P. koraiensis is not related to its genetic structure; perhaps it is mainly caused by man-made and natural disturbances such as deforestation and fire. Therefore, reducing disturbances and enhancing habitats, rather than the genetic aspects, play more important roles in the long-term protection of P. koraiensis. |
WOS研究方向 | Biochemistry & Molecular Biology ; Genetics & Heredity |
语种 | 英语 |
出版者 | FUNPEC-EDITORA |
WOS记录号 | WOS:000357183700127 |
内容类型 | 期刊论文 |
源URL | [http://210.72.129.5/handle/321005/122107] |
专题 | 中国科学院沈阳应用生态研究所 |
通讯作者 | Feng, F. J. |
作者单位 | 1.Swiss Fed Res Inst WSL, Birmensdorf, Switzerland 2.Northeast Forestry Univ, Harbin, Peoples R China 3.Heilongjiang Acad Sci, Inst Nat Resources, Harbin, Peoples R China 4.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110016, Peoples R China |
推荐引用方式 GB/T 7714 | Han, S. J.,Sui, X.,Feng, F. J.,et al. Mating system patterns of natural populations of Pinus koraiensis along its post-glacial colonization route in northeastern China[J]. GENETICS AND MOLECULAR RESEARCH,2015,14(2):4113-4124. |
APA | Han, S. J..,Sui, X..,Feng, F. J..,Zhao, D..,Xing, M..,...&Li, M. H..(2015).Mating system patterns of natural populations of Pinus koraiensis along its post-glacial colonization route in northeastern China.GENETICS AND MOLECULAR RESEARCH,14(2),4113-4124. |
MLA | Han, S. J.,et al."Mating system patterns of natural populations of Pinus koraiensis along its post-glacial colonization route in northeastern China".GENETICS AND MOLECULAR RESEARCH 14.2(2015):4113-4124. |
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