RT Journal Article
T1 Analysis of chloroplast genomes and a supermatrix inform reclassification of the Rhodomelaceae (Rhodophyta)
A1 Maggs, C. A.
A1 West, J. A.
A1 Verbruggen, H.
A1 Díaz Tapia, Pilar
K1 Chloroplast genome
K1 Classification
K1 Phylogenomics
K1 Red algae
K1 Rhodomelaceae
K1 Rhodophyta
K1 Tribes
AB With over a thousand species, the Rhodomelaceae is the most species-rich family of red algae. While its genera have been assigned to 14 tribes, the high-level classification of the family has never been evaluated with a molecular phylogeny. Here, we reassess its classification by integrating genome-scale phylogenetic analysis with observations of the morphological characters of clades. In order to resolve relationships among the main lineages of the family we constructed a phylogeny with 55 chloroplast genomes (52 newly determined). The majority of branches were resolved with full bootstrap support. We then added 266 rbcL, 125 18S rRNA gene and 143 cox1 sequences to construct a comprehensive phylogeny containing nearly half of all known species in the family (407 species in 89 genera). These analyses suggest the same subdivision into higher-level lineages, but included many branches with moderate or poor support. The circumscription for nine of the 13 previously described tribes was supported, but the Lophothalieae, Polysiphonieae, Pterosiphonieae and Herposiphonieae required revision, and five new tribes and one resurrected tribe were segregated from them. Rhizoid anatomy is highlighted as a key diagnostic character for the morphological delineation of several lineages. This work provides the most extensive phylogenetic analysis of the Rhodomelaceae to date and successfully resolves the relationships among major clades of the family. Our data show that organellar genomes obtained through high-throughput sequencing produce well-resolved phylogenies of difficult groups, and their more general application in algal systematics will likely permit deciphering questions about classification at many taxonomic levels.
PB Wiley
SN 1529-8817
YR 2017
FD 2017
LK https://hdl.handle.net/10347/39138
UL https://hdl.handle.net/10347/39138
LA eng
NO Díaz‐Tapia, P., Maggs, C. A., West, J. A., & Verbruggen, H. (2017). Analysis of chloroplast genomes and a supermatrix inform reclassification of the Rhodomelaceae (Rhodophyta). Journal of Phycology, 53(5), 920-937.
NO Xunta de Galicia
NO Australian Research Council
NO Australian Biological Resources Study
NO University of Melbourne
NO Holsworth Wildlife Research Endowment
NO Bush Blitz program (Australian Biological Resources Study)
DS Minerva
RD 27 abr 2026