Native oak chloroplasts reveal an ancient divide across Europe

Ferris, C, Oliver, RP, Davy, AJ and Hewitt, GM (1993) Native oak chloroplasts reveal an ancient divide across Europe. Molecular Ecology, 2 (6). pp. 337-343. ISSN 0962-1083

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Abstract

Glacial refugia and postglacial migration are major factors responsible for the present patterns of genetic variation we see in natural populations. Traditionally postglacial history has been inferred from fossil data, but new molecular techniques permit historical information to be gleaned from present populations. The chloroplast tRNALeu1 intron contains regions which have been highly conserved over a billion years of chloroplast evolution. Surprisingly, in one of these regions which has remained invariant for all photosynthetic organisms so far studied, we have found intraspecific site polymorphism. This polymorphism occurs in two European oaks, Quercus robur and Q. petraea, indicating hybridisation and introgression between them. Two distinct chloroplast types occur and are distributed geographically as eastern and western forms suggesting that these oaks are each derived from at least two separate glacial refugia.

Item Type: Article
Faculty \ School: Faculty of Science > School of Biological Sciences
University of East Anglia > Faculty of Science > Research Centres > Centre for Ecology, Evolution and Conservation
University of East Anglia > Faculty of Science > Research Groups > Organisms and the Environment
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Depositing User: Deborah Clemitshaw
Date Deposited: 13 Sep 2011 12:54
Last Modified: 25 Jul 2018 08:16
URI: https://ueaeprints.uea.ac.uk/id/eprint/34770
DOI: 10.1111/j.1365-294X.1993.tb00026.x

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