Mating system patterns of natural populations of Pinus koraiensis along its post-glacial colonization route in northeastern China

doi:10.4238/2015.April.27.26

	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.