Complete chloroplast genome of Austral king fern Todea barbara (L.) Moore (Osmundaceae)

Hyoung Tae Kim; Jung Sung Kim

doi:10.1080/23802359.2023.2238938

Complete chloroplast genome of Austral king fern Todea barbara (L.) Moore (Osmundaceae)

Mitochondrial DNA B Resour. 2023 Aug 2;8(8):799-803. doi: 10.1080/23802359.2023.2238938. eCollection 2023.

Authors

Hyoung Tae Kim¹, Jung Sung Kim²

Affiliations

¹ Department of Ecological and Environmental System, Kyungpook National University, Sangju, Kyungpook, South Korea.
² Department of Forest Science, Chungbuk National University, Cheongju, Chungbuk, South Korea.

Abstract

In this study, we determined the chloroplast genome sequence of the Austral king fern, Todea barbara (L.) Moore. The plastome of T. barbara is a typical circular form composed of 144,208 bp with two inverted repeats (IRs; 10,442 bp), a large single copy (LSC; 101,059 bp), and a small single copy (SSC; 22,265 bp). The complete sequence comprises 131 genes, namely 85 protein-coding genes, eight ribosomal RNAs, and 38 transfer RNAs. The guanine-cytosine (GC) content of the genome was found to be 39.9%. Additionally, U-to-C RNA editing sites were identified in eight genes: atpE, chlB, clpP, matK, rpl20, rpoB, rpoC1, and rpoC2. Phylogenetic analysis using 85 coding gene sequences revealed that the genera Todea and Osmunda form a clade and that the genus Osmundastrum is a sister genus to both.

Keywords: Austral king fern; Osmundaceae; RNA editing; Todea barbara; chloroplast genome.

Grants and funding

This work was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF), funded by the Ministry of Education [Grant Nos. 2021R1I1A3A04037448 and 2020R1I1A2053517].