Journal article

New pelagophytes show a novel mode of algal colony development and reveal a perforated theca that may define the class

Richard Wetherbee, Trevor T Bringloe, Joana F Costa, Allison van de Meene, Robert A Andersen, Heroen Verbruggen

Journal of Phycology | WILEY | Published : 2020


Pelagophytes (Heterokonta) are a morphologically diverse class of marine algae historically united only by DNA sequences. We established clonal cultures of sand-dwelling pelagophytes collected from intertidal pools around Australia. Phylogenetic trees based on nuclear 18S rDNA and plastid rbcL, psaA, psaB, psbA, and psbC sequences revealed two new genera, Gazia and Glomerochrysis, related to Aureoumbra in a distinct lineage within the Sarcinochrysidaceae (Pelagophyceae). The three new species (Gazia saundersii, Gazia australica, and Glomerochrysis psammophila), along with an Australian strain of Aureoumbra geitleri, are characterized by dominant benthic stages that differ significantly from ..

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Awarded by Australian Research Council

Funding Acknowledgements

We thank the School of Biosciences Microscopy Unit at the University of Melbourne for the use of the electron microscopes and accessory equipment, and the RMIT Microscopy and Microanalysis Facility for the use of their high-pressure freezer. Financial support was provided by the Australian Research Council (DP150100705 to HV), the University of Melbourne (McKenzie fellowship to TTB), and the University of Melbourne Botany Foundation.