NATIVE OAK CHLOROPLASTS REVEAL AN ANCIENT DIVIDE ACROSS EUROPE

被引：149

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

来源：

MOLECULAR ECOLOGY | 1993年 / 2卷 / 06期

关键词：

CHLOROPLAST DNA (CPDNA); DNA SEQUENCING; GLACIAL REFUGIA; POSTGLACIAL MIGRATION; QUERCUS SPP; TRANSFER RNA(LEU1) INTRON;

D O I：

10.1111/j.1365-294X.1993.tb00026.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：

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 tRNA(Leu1) 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.

引用

页码：337 / 344

页数：8

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