01674nas a2200169   4500008004100000245015600041210006900197260000900266300001200275490000700287520107900294100001601373700002001389700001701409700001701426856006101443       2000                        eng d00aMorphological and Molecular Differentiation between Quercus petraea(Matt.) Liebl. and Quercus pubescens Willd. (Fagaceae) in Northern and Central Italy0 aMorphological and Molecular Differentiation between Quercus petr  c2000  a325-3330 v853 aQuercus petraea(Matt.) Liebl. and Q. pubescens Willd. are two closely related taxa. No specific single marker, either morphological or molecular, has been identified to distinguish the two species until now. In the present study morphoanatomical and molecular traits (simple sequence repeats = SSR loci) were investigated in an attempt to characterize and to discriminate between these two oak species. At the morphological level, the applied statistics (nested ANOVA and discriminant analysis) suggest that the micromorphological features are the most effective for this purpose. The wide range of macromorphological variation observed can confound the classification of many individuals into either Q. petraea and Q. pubescens. Analysis of microsatellite data indicates that most of the genetic variation is contained within, rather than between, species. The lack of molecular divergence could be attributed to either relatively rapid and recent differentiation or to extensive hybridization following secondary contact of the taxa.Copyright 2000 Annals of Botany Company1 aBruschi, P.1 aVendramin, G.G.1 aBussotti, F.1 aGrossoni, P.  uhttp://aob.oupjournals.org/cgi/content/abstract/85/3/32502296nas a2200217   4500008004100000245012900041210006900170260000900239300001400248490000700262520159000269100001401859700001701873700001801890700001801908700001901926700001701945700001801962700002001980856007802000       2007                        eng d00aThe distribution of Quercus suber chloroplast haplotypes matches the palaeogeographical history of the western Mediterranean0 adistribution of Quercus suber chloroplast haplotypes matches the  c2007  a5259-52660 v163 aAbstract Combining molecular analyses with geological and palaeontological data may reveal timing and modes for the divergence of lineages within species. The Mediterranean Basin is particularly appropriate for this kind of multidisciplinary studies, because of its complex geological history and biological diversity. Here, we investigated chloroplast DNA of Quercus suber populations in order to detect possible relationships between their geographical distribution and the palaeogeographical history of the western Mediterranean domain. We analysed 110 cork oak populations, covering the whole distribution range of the species, by 14 chloroplast microsatellite markers, among which eight displayed variation among populations. We identified five haplotypes whose distribution is clearly geographically structured. Results demonstrated that cork oak populations have undergone a genetic drift geographically consistent with the Oligocene and Miocene break-up events of the European-Iberian continental margin and suggested that they have persisted in a number of separate microplates, currently found in Tunisia, Sardinia, Corsica, and Provence, without detectable chloroplast DNA modifications for a time span of over 15 million years. A similar distribution pattern of mitochondrial DNA of Pinus pinaster supports the hypothesis of such long-term persistence, in spite of Quaternary climate oscillations and of isolation due to insularity, and suggests that part of the modern geographical structure of Mediterranean populations may be traced back to the Tertiary history of taxa.1 aMAGRI, D.1 aFINESCHI, S.1 aBELLAROSA, R.1 aBUONAMICI, A.1 aSEBASTIANI, F.1 aSCHIRONE, B.1 aSIMEONE, M.C.1 aVendramin, G.G.  uhttp://www.blackwell-synergy.com/doi/abs/10.1111/j.1365-294X.2007.03587.x