Comparative plastome analyses and evolutionary relationships of <i>Drynaria</i>.

ABSTRACT:

Introduction

The genus Drynaria, a member of the Polypodiaceae family, exhibits substantial medicinal and ornamental value. Although molecular biological studies have elucidated the phylogenetic relationships in Drynaria, the characteristics of its plastome and the mechanisms underlying its adaptive evolution remain inadequately understood.

Methods

This study performed a comprehensive comparative genomic analysis based on the plastomes of 15 Drynaria species. The research analyzed codon usage bias and identified positively selected genes within this genus. A well-supported phylogenetic tree was constructed using plastome data, and divergence times were measured at key nodes.

Results

The analysis revealed that the plastomes of the 15 Drynaria

SUBMITTER: Chen XH 

PROVIDER: S-EPMC12864413 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature