Comparative phylogeography study reveals introgression and incomplete lineage sorting during rapid diversification of Rhodiola.

ABSTRACT:

Background and aims

Many plant taxa in the Qinghai-Tibetan Plateau (QTP) and the Hengduan Mountains (HM) radiated rapidly during the Quaternary but with frequent secondary contact between diverging populations. Incomplete lineage sorting and introgressive hybridization might be involved during the rapid radiation, but their effects on phylogeography have not been fully determined.

Methods

We investigated the chloroplast DNA (cpDNA)/internal transcribed spacer (ITS) sequence variations of 611 samples of Rhodiola bupleuroides, R. discolor, R. fastigiata and R. chrysanthemifolia from the QTP and HM to compare the phylogeographic patterns between the four species with different evolutionary histories, geographic ranges and reproductive modes.

Key results

The divergence ti

SUBMITTER: You J 

PROVIDER: S-EPMC8796671 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature