A novel phylogeny of the Gelidiales (Rhodophyta) based on five genes including the nuclear CesA, with descriptions of Orthogonacladia gen. nov. and Orthogonacladiaceae fam. nov.

G.H. Boo, L. Le Gall, K.A. Miller, D.W. Freshwater, Thomas Wernberg, R. Terada, K.J. Yoon, S.M. Boo

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

© 2016 Elsevier Inc.
Although the Gelidiales are economically important marine red algae producing agar and agarose, the phylogeny of this order remains poorly resolved. The present study provides a molecular phylogeny based on a novel marker, nuclear-encoded CesA, plus plastid-encoded psaA, psbA, rbcL, and mitochondria-encoded cox1 from subsets of 107 species from all ten genera within the Gelidiales. Analyses of individual and combined datasets support the monophyly of three currently recognized families, and reveal a new clade. On the basis of these results, the new family Orthogonacladiaceae is described to accommodate Aphanta and a new genus Orthogonacladia that includes species previously classified as Gelidium madagascariense and Pterocladia rectangularis. Acanthopeltis is merged with Gelidium, which has nomenclatural priority. Nuclear-encoded CesA was found to be useful for improving the resolution of phylogenetic relationships within the Gelidiales and is likely to be valuable for the inference of phylogenetic relationship among other red algal taxa.
Original languageEnglish
Pages (from-to)359-372
Number of pages14
JournalMolecular Phylogenetics and Evolution
Volume101
DOIs
Publication statusPublished - 1 Aug 2016

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