MOLECULAR SIGNALS FOR LATE TERTIARY/EARLY QUATERNARY RANGE SPLITS OF AN EURASIAN STEPPE PLANT: CLAUSIA APRICA (BRASSICACEAE)статья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 19 сентября 2015 г.
Аннотация:Several vegetation belts stretch continuously from Europe to Asia, taiga and steppe being
most prominent. Numerous plant species within these belts share a conspicuous distribution
area, which is longitudinally contracted or disrupted approximately along longitude
70°E. To date no hypothesis for this intriguing distribution pattern has been put forward.
We detected molecular footprints in the contemporary genetic composition in nuclear DNA
(ITS1, ITS2) and chloroplast DNA (trnL–trnF spacer region) of the steppe element Clausia
aprica (Brassicaceae) providing evidence for a severe longitudinal range split and genetic
differentiation east of the Ural Mountains about 1 million years ago caused by Quaternary
climatic oscillations.Clausia aprica provides the first phylogeographical analysis on the
intraspecific evolution of an Eurasian steppe plant.