Large-scale phylogenomic analysis resolves a backbone phylogeny in ferns.

ABSTRACT:

Background

Ferns, originated about 360 million years ago, are the sister group of seed plants. Despite the remarkable progress in our understanding of fern phylogeny, with conflicting molecular evidence and different morphological interpretations, relationships among major fern lineages remain controversial.

Results

With the aim to obtain a robust fern phylogeny, we carried out a large-scale phylogenomic analysis using high-quality transcriptome sequencing data, which covered 69 fern species from 38 families and 11 orders. Both coalescent-based and concatenation-based methods were applied to both nucleotide and amino acid sequences in species tree estimation. The resulting topologies are largely congruent with each other, except for the placement of Angiopteris fokiensis, Ch

SUBMITTER: Shen H 

PROVIDER: S-EPMC5795342 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature