01890nas a2200169   4500008004100000245007000041210006800111260000900179300001400188490000600202520135900208100002101567700001401588700001901602700001501621856008401636       1997                        eng d00aConservation of (GA)n microsatellite loci between Quercus species0 aConservation of GAn microsatellite loci between Quercus species  c1997  a1189-11940 v63 aMicrosatellite (simple sequence repeat, SSR) amplification was performed in eight different members of the Fagaceae family by using sets of primers developed from sessile oak, Quercus petraea. In total, 136 cases of heterologous amplification were carried out, and 66% resulted in interpretable amplification products. From these, 12 PCR amplification products were sequenced and all 12 contained a sequence homologous to the original locus from Q. petraea. Although SSR primers worked even across different genera, with increasing evolutionary distance there was a clear tendency for decreasing ability to successfully amplify loci and a decreasing proportion of polymorphism amongst those markers which could be amplified. Two of the loci, ssrQpZAG46 and ssrQpZAG110, were polymorphic in all Quercus species tested. Only at one locus, ssrQpZAG58, a specific PCR product could be amplified in all species analysed. For four loci found in two species, we observed significant interspecies differences in the size range of the amplified alleles. Sequence analysis of two alleles showed that the size differences are not only due to variations in the number of (GA) repeats but also to an insertion of approximately 80 nucleotides in the flanking region. Our findings prove the usefulness of SSR markers within and amongst closely related genera of plants.1 aSteinkellner, H.1 aLexer, C.1 aTuretschek, E.1 aGlossl, J.  uhttp://www.blackwell-synergy.com/links/doi/10.1046/j.1365-294X.1997.00288.x/abs00495nas a2200145   4500008004100000245012100041210006900162260000900231300001400240490000700254100001400261700001500275700001600290856004300306       2006                        eng d00aShared alleles in sympatric oaks: recurrent gene flow is a more parsimonious explanation than ancestral polymorphism0 aShared alleles in sympatric oaks recurrent gene flow is a more p  c2006  a2007-20120 v151 aLexer, C.1 aKremer, A.1 aPetit, R.J.  uhttps://quercus.myspecies.info/node/29