Origin and evolutionary history of Populus (Salicaceae): Further insights based on time divergence and biogeographic analysis.

ABSTRACT:

Introduction

Populus (Salicaceae) species harbour rich biodiversity and are widely distributed throughout the Northern Hemisphere. However, the origin and biogeography of Populus remain poorly understood.

Methods

We infer the divergence times and the historical biogeography of the genus Populus through phylogenetic analysis of 34 chloroplast fragments based on a large sample.

Results and discussion

Eurasia is the likely location of the early divergences of Salicaceae after the Cretaceous-Paleogene (K-Pg) mass extinction, followed by recurrent spread to the remainder of the Old World and the New World beginning in the Eocene; the extant Populus species began to diversity during the early Oligocene (approximately 27.24 Ma), climate changes du

SUBMITTER: Liu X 

PROVIDER: S-EPMC9815717 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature