Molecular and morphological evidence for Sheathia gen. nov. (Batrachospermales, Rhodophyta) and three new species

@article{Salomaki2014MolecularAM,
  title={Molecular and morphological evidence for Sheathia gen. nov. (Batrachospermales, Rhodophyta) and three new species},
  author={Eric D. Salomaki and Janina Kwandrans and Pertti V. Eloranta and Morgan L. Vis},
  journal={Journal of Phycology},
  year={2014},
  volume={50}
}
The freshwater red algal genus Batrachospermum has been shown to be paraphyletic since the first molecular studies of the Batrachospermales. Previous research, along with this study, provides strong support for the clade Batrachospermum section Helminthoidea. This study has found that heterocortication, the presence of both cylindrical and bulbous cells on the main axis, is an underlying synapomorphy of this clade. Based on support from DNA sequences of the rbcL gene, the COI barcode region and… 
First record of Nocturama (Batrachospermales, Rhodophyta) in South America, with the description of a new species N. novamundensis
TLDR
Comparison of DNA sequences of the plastid-encoded ribulose-1,5-bisphosphatecarboxylase–oxygenase large subunit and the nuclear small subunit ribosomal DNA markers showed Nocturama as a well supported clade, and Morphological and molecular evidence support recognizing the Brazilian specimens as a new species.
Paludicola gen. nov. and revision of the species formerly in Batrachospermum section Turfosa (Batrachospermales, Rhodophyta).
TLDR
Substantial genetic variation within the Batrachospermales genus was discovered and 12 species are recognized based on DNA sequence data as well as morphological characters and geographic distribution.
A new genus, Volatus and four new species of Batrachospermum sensu stricto (Batrachospermales, Rhodophyta)
TLDR
The new genus Volatus shares the distinctive characteristic of twisted or curled carpogonium-bearing branches with Kumanoa and Tuomeya but was not sister to either of these genera, suggesting that this character may have arisen at least three times in the order.
Revision of Batrachospermum section Macrospora (Batrachospermales, Rhodophyta) with the establishment of the new genus Montagnia
TLDR
Within the new genus, Montagnia is proposed, the characters used to circumscribe species were re-evaluated by examining type specimens as well as samples from North and South America, and species delimitation methods did not suggest that more than one species is justified.
Revision of section Setacea of the genus Batrachospermum (Batrachospermales, Rhodophyta) with emphasis on specimens from Brazil
TLDR
The analyses of rbcL and cox1 sequences revealed that section Setacea forms a well-supported clade, which was positioned close but clearly separated from some species of Batrachospermum usually called group ‘Australasica’.
A new species of the genus Sheathia (Batrachospermaceae, Rhodophyta) from Japan
TLDR
Sheathia yoshizakii is the first Sheathia species confirmed by DNA sequence data in Japan and is characterized by homocortication, a carpogonium with clavate to lanceolate trichogyne, and exerted carposporophytes.
Phylogenetic, evolutionary, and biogeographic origin of the genus Sheathia (Batrachospermales, Rhodophyta)
TLDR
Molecular sequences of rbc L, COI-5P, and psb A were used to investigate the phylogenetic, evolutionary, and biogeographic origin of the genus Sheathia, and three molecular markers supported that the two gametophyte stage specimens belong to S. longipedicellata.
Nocturama gen. nov., Nothocladus s. lat. and other taxonomic novelties resulting from the further resolution of paraphyly in Australasian members of Batrachospermum (Batrachospermales, Rhodophyta)
TLDR
A new genus, Nocturama, is proposed for a clade of Batrachospermum antipodites specimens based on the well‐resolved phylogeny and improved statistical support values for most nodes showed, providing a framework for taxonomic revision.
Revision of Batrachospermum Section Virescentia (Batrachospermales, Rhodophyta) with the Establishment of the New Genus, Virescentia Stat. nov.
TLDR
Five species of Batrachospermum section Virescentia are recognized and a new species is proposed as follows and the characters used to circumscribe species are re-evaluated by reexamination of type specimens and new collections in historically important areas.
Current status of freshwater red algal diversity (Rhodophyta) of the African continent including description of new taxa (Batrachospermales)
TLDR
It is estimated that 14 to 19 batrachospermalean taxa can be recognised for the African flora, and that with more study, that number could easily double or triple based on the diversity known from other well-studied continents.
...
...

References

SHOWING 1-10 OF 54 REFERENCES
PHYLOGENY OF THE BATRACHOSPERMALES (RHODOPHYTA) INFERRED FROM rbcL AND 18S RIBOSOMAL DNA GENE SEQUENCES
The sequence data from the large subunit of ribulose‐1,5‐bisphosphate carboxylase/oxygenase (rbcL) gene and 18S ribosomal DNA (small subunit) of taxa in the freshwater rhodophyte order
MOLECULAR PHYLOGENY OF THE GENUS KUMANOA (BATRACHOSPERMALES, RHODOPHYTA) 1
TLDR
The phylogenetic analyses did not reveal any interpretable biogeographic patterns within the genus Kumanoa, and no intrageneric classification is recommended based on current knowledge.
An examination of the red algal genus Pugetia (Kallymeniaceae, Gigartinales), with descriptions of Salishia firma gen. & comb. nov., Pugetia cryptica sp. nov. and Beringia wynnei sp. nov.
TLDR
The red algal genus Pugetia was surveyed along the west coast of Canada using the DNA barcode (COI-5P – 5′ region of the mitochondrial cytochrome c oxidase I gene) as a species identification tool and subsequently resolved as five genetic species groups, although only two are reported in the flora.
Investigation of two species complexes in Batrachospermum section Batrachospermum (Batrachospermales, Rhodophyta)
TLDR
Evidence is provided that section Batrachospermum will need to be split with the potential of resurrecting section Helminthoidea and that the generic classification needs revision.
INSIGHTS INTO THE PHYLOGENY OF THE BATRACHOSPERMALES (RHODOPHYTA) FROM rbcL SEQUENCE DATA OF AUSTRALIAN TAXA
TLDR
A phylogenetic analysis of RUBISCO large subunit (rbcL) gene sequence data revealed three clades of batrachospermalean taxa: a “mixed” clade composed of taxa sampled from Australia and North America, a clade of primarily Australian collections, and aClade of predominantly North American samples.
Distribution and systematics of Batrachospermum (Batrachospermales, Rhodophyta) in North America. 9. Section Batrachospermum: description of five new species
TLDR
Five new species belonging to Batrachospermum section Batrachespermum are described from North America, with unique forked trichogynes and spermatangia on one-celled involucral filaments.
BIOGEOGRAPHYOF BATRACHOSPERMUM GELATINOSUM (BATRACHOSPERMALES, RHODOPHYTA) IN NORTH AMERICA BASED ON MOLECULAR AND MORPHOLOGICAL DATA 1
TLDR
It is concluded that B. gelatinosum is a morphologically variable and geographically widespread species that is a valid taxonomic entity that is partly based on geographic distribution.
Investigation of the molecular and morphological variability in Batrachospermum arcuatum (Batrachospermales, Rhodophyta) from geographically distant locations
TLDR
Phylogeographic patterns in Batrachospermum arcuatum were investigated using the mitochondrial intergenic spacer between the cytochrome oxidase subunit 2 and 3 (cox2-3 spacer) from locations worldwide and there appears to be a temperate origin of the taxon and a derived group of haplotypes from tropical regions.
A molecular and morphological investigation of Batrachospermum arcuatum (Batrachospermales, Rhodophyta) in China
Distribution and systematics of Batrachospermum (Batrachospermales, Rhodophyta) in North America. 8b. Section Batrachospermum: previously described species excluding Batrachospermum gelatinosum
Sixty-two North American populations of seven previously described species belonging to Batrachospermum sect. Batrachospermum were examined and compared with appropriate type specimens using
...
...