Lipinska, Agnieszka P., Krueger-Hadfield, Stacy A., Godfroy, Olivier, Dittami, Simon, Ayres-Ostrock, Lígia, Bonthond, Guido, Brillet-Guéguen, Loraine, Coelho, Susana, Corre, Erwan, Cossard, Guillaume, Destombe, Christophe, Epperlein, Paul, Faugeron, Sylvain, Ficko-Blean, Elizabeth, Beltrán, Jessica, Lavaut, Emma, Le Bars, Arthur, Marchi, Fabiana, Mauger, Stéphane, Michel, Gurvan, Potin, Philippe, Scornet, Delphine, Sotka, Erik E., Weinberger, Florian , de Oliveira, Mariana Cabral, Guillemin, Marie-Laure, Plastino, Estela M, Valero, Myriam and Castric, Vincent (2023) The Rhodoexplorer Platform for Red Algal Genomics and Whole Genome Assemblies for Several Gracilaria Species. Genome Biology and Evolution, 15 (7). Art.Nr. evad124. DOI 10.1093/gbe/evad124.

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Abstract

Macroalgal (seaweed) genomic resources are generally lacking as compared to other eukaryotic taxa, and this is particularly true in the red algae (Rhodophyta). Understanding red algal genomes is critical to understanding eukaryotic evolution given that red algal genes are spread across eukaryotic lineages from secondary endosymbiosis and red algae diverged early in the Archaeplastids. The Gracilariales is a highly diverse and widely distributed order including species that can serve as ecosystem engineers in intertidal habitats and several notorious introduced species. The genus Gracilaria is cultivated worldwide, in part for its production of agar and other bioactive compounds with downstream pharmaceutical and industrial applications. This genus is also emerging as a model for algal evolutionary ecology. Here, we report new whole genome assemblies for two species (G. chilensis and G. gracilis), a draft genome assembly of G. caudata, and genome annotation of the previously published G. vermiculophylla genome. To facilitate accessibility and comparative analysis, we integrated these data in a newly created web-based portal dedicated to red algal genomics (https://rhodoexplorer.sb-roscoff.fr). These genomes will provide a resource for understanding algal biology and, more broadly, eukaryotic evolution.

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