Using chloroplast DNA to trace postglacial migration routes of oaks into Britain

被引:65
作者
Ferris, C [1 ]
Oliver, RP [1 ]
Davy, AJ [1 ]
Hewitt, GM [1 ]
机构
[1] UNIV E ANGLIA,SCH BIOL SCI,NORWICH NR4 7TJ,NORFOLK,ENGLAND
关键词
chloroplast DNA (cpDNA); DNA sequencing; genetic variation; postglacial history; Quercus spp; tRNA(Leu1) intron;
D O I
10.1111/j.1365-294X.1995.tb00273.x
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Postglacial migration is a major factor responsible for the patterns of genetic variation we see in natural populations. Fossil pollen data indicate that early postglacial colonists such as oak, were able to take both western and eastern migration routes into Britain. Analysis at a finer level is now permitted by the use of modern molecular techniques. A 13-bp duplication in the chloroplast tRNA(Leu1) intron occurs in natural populations of East Anglian oaks, but is not found in other parts of Britain or from mainland Europe. The distribution of this marker suggests that the mutation occurred either in southern England, or during migration from the mainland, and became fixed in a source population from which East Anglia was colonized. Planting of non-native trees for roadside boundaries and in the grounds of old houses and estates, explains the absence of the marker from some East Anglian oaks.
引用
收藏
页码:731 / 738
页数:8
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