Complete Mitochondrial Genomes Reveal Population-Level Patterns in the Widespread Red Alga Gelidiella fanii (Gelidiales, Rhodophyta)

Type Article
Date 2020-10
Language English
Author(s) Boo Ga Hun1, 2, 3, Zubia Mayalen4, Hughey Jeffery R.5, Sherwood Alison R.6, Fujii Mutue T.1, Boo Sung Min2, Miller Kathy Ann3
Affiliation(s) 1 : Nucleus for Research in Phycology, Institute of Botany, São Paulo, Brazil
2 : Department of Biology, Chungnam National University, Daejeon, South Korea
3 : University Herbarium, University of California, Berkeley, Berkeley, CA, United States
4 : UMR EIO (UPF-IRD-ILM-IFREMER), Université de la Polynésie Française, Labex Corail, Faa’a, French Polynesia
5 : Division of Mathematics, Science, and Engineering, Hartnell College, Salinas, CA, United States
6 : School of Life Sciences, University of Hawai‘i at Mānoa, Honolulu, HI, United States
Source Frontiers In Marine Science (2296-7745) (Frontiers Media SA), 2020-10 , Vol. 7 , P. 583957 (13p.)
DOI 10.3389/fmars.2020.583957
WOS© Times Cited 8
Keyword(s) agar-yielding algae, biogeography, Gelidiales, haplotype lineages, mitogenomes, widespread species

Although complete mitogenomic data have been widely applied in human and other animal population studies, they are extremely limited for florideophycean red algal populations. Gelidiella fanii is a recently described rhodophyta, previously misidentified as G. acerosa, a cosmopolitan agar-yielding species from tropical to subtropical waters. To decipher patterns in genetic diversity and geographic distribution for G. fanii, we obtained 10 complete mitogenomes including two outgroups, G. acerosa and G. flabella. The mitogenomes ranged in size from 25,223 to 25,281 bp and had 48 genes, which are similar in general structure, gene order and content, and presence of a group II intron. Phylogenomic analysis revealed that G. fanii was monophyletic and clearly separate from G. acerosa. The range of G. fanii was extended from Southeast Asia and northern Australia to Eritrea, Juan de Nova Island, and Kenya in the west, and to Hawai‘i and Tetiaroa Atoll to the east. Haplotype network analysis of cox1 revealed seven geographically structured groups: Southeast Asia, Kenya/Juan de Nova Island, Indonesia, northern Australia, the Philippines, Tetiaroa Atoll, and Hawai‘i. This regional structure has likely resulted from the separation and isolation of an ancient widespread population during the Pleistocene. This study demonstrates that mitogenome sequencing is a powerful genotyping tool for studies of genetic diversity, biogeography, and conservation of economically valuable marine algal species.

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Boo Ga Hun, Zubia Mayalen, Hughey Jeffery R., Sherwood Alison R., Fujii Mutue T., Boo Sung Min, Miller Kathy Ann (2020). Complete Mitochondrial Genomes Reveal Population-Level Patterns in the Widespread Red Alga Gelidiella fanii (Gelidiales, Rhodophyta). Frontiers In Marine Science, 7, 583957 (13p.). Publisher's official version : , Open Access version :