Microsatellite genetic variation in small and isolated populations of Magnolia sieboldii ssp. japonica

Heredity
S Kikuchi, Yuji Isagi

Abstract

Magnolia sieboldii ssp. japonica, distributed mainly in western Japan, is restricted to high elevation areas (1000-2000 m above sea level) and usually forms small isolated populations. Four microsatellite loci were assayed for 19 populations from six regions spanning the range of distribution, and the levels and distribution of genetic variation were estimated. All four loci were variable, with a total of 39 alleles, but the overall level of microsatellite genetic variation was low, especially compared with a related species, M. obovata. Genetic structure in M. sieboldii was characterised by low intrapopulational genetic variation (A = 3.74 and H(o) = 0.366 on average) and high genetic differentiation even among regional populations. Highly significant isolation-by-distance (IBD) models at the short distance were detected. Genetic drift and limited gene flow was considered to be important in determining the genetic structure within regions. Total genetic differentiation was remarkably high (F(ST) = 0.488 and R(ST) = 0.538), suggesting genetic barriers among regions. Neighbour-joining dendrograms relating the 19 populations, and further analysis on the IBD models, revealed that a stepwise mutation model was more suited than an i...Continue Reading

References

Feb 1, 1974·British Journal of Urology·G WilliamsH J Bloom
Jul 18, 1995·Proceedings of the National Academy of Sciences of the United States of America·D B GoldsteinM W Feldman
Sep 27, 2000·Evolution; International Journal of Organic Evolution·F BallouxJ Goudet
Nov 1, 1984·Evolution; International Journal of Organic Evolution·B S Weir, C Clark Cockerham
Jan 1, 1983·Evolution; International Journal of Organic Evolution·F Thomas Ledig, M Thompson Conkle
Feb 1, 1993·Evolution; International Journal of Organic Evolution·Montgomery Slatkin

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Citations

Nov 15, 2005·Journal of Plant Research·Hiroo YamadaRyoji Hashimoto

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