MOLECULAR PHYLOGENY AND TAXONOMY OF THE AEGAGROPILA CLADE (CLADOPHORALES, ULVOPHYCEAE), INCLUDING THE DESCRIPTION OF AEGAGROPILOPSIS GEN. NOV. AND PSEUDOCLADOPHORA GEN. NOV.1
- 21 March 2012
- journal article
- Published by Wiley in Journal of Phycology
- Vol. 48 (3), 808-825
- https://doi.org/10.1111/j.1529-8817.2012.01145.x
Abstract
The Aegagropila clade represents a unique group of cladophoralean green algae occurring mainly in brackish and freshwater environments. The clade is sister to the species-rich and primarily marine Cladophora and Siphonocladus lineages. Phylogenetic analyses of partial LSU and SSU nrDNA sequences reveal four main lineages within the Aegagropila clade, and allow a taxonomic reassessment. One lineage consists of two marine ‘Cladophora’ species, for which the new genus Pseudocladophora and the new family Pseudocladophoraceae are proposed. For the other lineages, the family name Pithophoraceae is reinstated. Within the Pithophoraceae, the earliest diverging lineage includes Wittrockiella and Cladophorella calcicola, occurring mainly in brackish and subaerial habitats. The two other lineages are restricted to freshwater. One of them shows a strong tendency for epizoism, and consists of Basicladia species and Arnoldiella conchophila. The other lineage includes Aegagropila, Pithophora and a small number of tropical ‘Cladophora’ species. The latter are transferred to the new genus Aegagropilopsis. Previously, polypyramidal pyrenoids had been suggested to be apomorphous for this clade, but we report the finding of both polypyramidal and bilenticular pyrenoids in members of the Pithophoraceae, and thus show that this character has no diagnostic value.Keywords
This publication has 63 references indexed in Scilit:
- Nuclear rDNA sequences of Wittrockiella amphibia (Collins) comb. nov. (Cladophorales, Chlorophyta) and morphological characterization of the mat-like growth formBotanica Marina, 2010
- Predicting species distributions from checklist data using site‐occupancy modelsJournal of Biogeography, 2010
- Molecular phylogeny of the Siphonocladales (Chlorophyta: Cladophorophyceae)Molecular Phylogenetics and Evolution, 2007
- PAML 4: Phylogenetic Analysis by Maximum LikelihoodMolecular Biology and Evolution, 2007
- Improving the Analysis of Dinoflagellate Phylogeny based on rDNAProtist, 2005
- MUSCLE: multiple sequence alignment with high accuracy and high throughputNucleic Acids Research, 2004
- Multiple Comparisons of Log-Likelihoods with Applications to Phylogenetic InferenceMolecular Biology and Evolution, 1999
- Confidence Limits on Phylogenies: An Approach Using the BootstrapEvolution, 1985
- Chloroplast Pigments in Selected Marine Chaetophoraceae and Chaetosiphonaceae (Chlorophyta): The Occurrence and Significance of SiphonaxanthinBotanica Marina, 1982
- The immigration and prehistory of the glacial relicts of Eurasia and North America. A survey and discussion of modern viewsInternational Review of Hydrobiology, 1962