NDLI: Population genetic analysis of Xylia xylocarpa (Fabaceae

Content Provider	Springer Nature Link
Author	Wattanakulpakin, Tanat Iamtham, Siriluck Grubbs, Kunsiri Chaw Volkaert, Hugo A.
Copyright Year	2015
Abstract	The genetic diversity of Xylia xylocarpa (Roxb.) W. Theob. var. kerrii I. C. Nielsen in Thailand was studied using molecular markers. The results revealed a large diversity within and moderate differentiation between populations that could be correlated with geography. Samples were collected from individual trees in 16 populations. Eight single-locus nuclear gene markers were used to identify different alleles using PCR–single-strand conformation polymorphism (SSCP) combined with sequencing. For easier detection of some alleles, 10 SNPs were converted into cleaved amplified polymorphic sequence (CAPS) assays and 5 SNPs were converted to allele-specific PCR (AS-PCR) assays. From 10 to 33 alleles were identified for the different loci. The effective number of alleles was much lower, ranging between 1.1 and 7.6, as several of the alleles were found at low frequency in just one or a small number of populations. Several loci showed deviation from the Hardy–Weinberg equilibrium. A high level of gene flow was estimated. The largest genetic distances calculated according to Nei (G $_{st}$) and Jost (D $_{est}$) were found between populations from the northeast and the west of Thailand. STRUCTURE analysis revealed support for population differentiation in two or three clusters, though genetic distances between the clusters were small. Four populations from western Thailand separated from the others, as did the three populations from northeastern Thailand. The large number of low-frequency alleles would make conservation of genetic resources in this species a difficult task as a large number of populations and individuals will need to be protected.
Starting Page	1
Ending Page	14
Page Count	14
File Format	PDF
ISSN	16142942
Journal	Tree Genetics & Genomes
Volume Number	11
Issue Number	1
e-ISSN	16142950
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-01-24
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Xylia xylocarpa Genetic diversity SSCP SNP AS-PCR CAPS Forestry Plant Genetics & Genomics Plant Breeding/Biotechnology Tree Biology Biotechnology
Content Type	Text
Resource Type	Article
Subject	Genetics Molecular Biology Horticulture Forestry

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