Comparative analysis of inverted repeats of polypod fern (Polypodiales) plastomes reveals two hypervariable regions.

ABSTRACT:

Background

Ferns are large and underexplored group of vascular plants (~ 11 thousands species). The genomic data available by now include low coverage nuclear genomes sequences and partial sequences of mitochondrial genomes for six species and several plastid genomes.

Results

We characterized plastid genomes of three species of Dryopteris, which is one of the largest fern genera, using sequencing of chloroplast DNA enriched samples and performed comparative analysis with available plastomes of Polypodiales, the most species-rich group of ferns. We also sequenced the plastome of Adianthum hispidulum (Pteridaceae). Unexpectedly, we found high variability in the IR region, including duplication of rrn16 in D. blanfordii, complete loss of trnI-GAU in D. filix-mas, its pseudogeni

SUBMITTER: Logacheva MD 

PROVIDER: S-EPMC5751766 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature