Geographic isolation and environmental heterogeneity shape population genetic differentiation of a medicinal plant, amla (<i>Phyllanthus emblica</i> L.) in river valleys of Yunnan, China.

ABSTRACT: The diverse topographies of high mountains and deep river valleys in Yunnan, China create geographic and environmental barriers that promote intraspecific genetic differentiation. This study employed amla (Phyllanthus emblica L.) to reveal the effects of geographic and environmental isolation on genetic differentiation of plant species. We sampled 18 natural P. emblica populations from upstream to downstream in the Longchuan, Nu, Lancang, Yuanjiang and Jinsha Rivers valleys (three or four per valley) in 2017. Genetic diversity and structure of P. emblica were assessed across these populations using 16 SSR loci developed, and analyzed with GenAlEx, ATetra, and STRUCTURE software packages. Ecological niche modeling (MaxEnt) estimated its historical and contemporary poten

SUBMITTER: Wang CY 

PROVIDER: S-EPMC12457440 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature