Artigo Acesso aberto Revisado por pares

Evolutionary genomics of the emergence of brown algae as key components of coastal ecosystems

2024; Cell Press; Volume: 187; Issue: 24 Linguagem: Inglês

10.1016/j.cell.2024.10.049

ISSN

1097-4172

Autores

France Denœud, Olivier Godfroy, Corinne Cruaud, Svenja Heesch, Zofia Nehr, Nachida Tadrent, Arnaud Couloux, Loraine Brillet-Guéguen, Ludovic Delage, Dean Mckeown, Taizo Motomura, Duncan Sussfeld, Xiao Fan, Lisa Mazéas, Nicolas Terrapon, Josué Barrera‐Redondo, Romy Petroll, Lauric Reynes, Seok-Wan Choi, Jihoon Jo, Kavitha Uthanumallian, Kenny A. Bogaert, Céline Duc, Pélagie Ratchinski, Agnieszka P. Lipinska, Benjamin Noël, Eleanor A. Murphy, Martin Lohr, Ananya Khatei, Pauline Hamon-Giraud, Christophe Vieira, Komlan Avia, Svea Sanja Akerfors, Shingo Akita, Yacine Badis, Tristan Barbeyron, Arnaud Belcour, Wahiba Berrabah, Samuel Blanquart, Ahlem Bouguerba-Collin, Trevor Bringloe, Rose Ann Cattolico, Alexandre Cormier, Helena Cruz de Carvalho, Romain Dallet, Olivier De Clerck, Ahmed Debit, Erwan Denis, Christophe Destombe, Erica Dinatale, Simon M. Dittami, Élodie Drula, Sylvain Faugeron, Jeanne Got, Louis Graf, Agnès Groisillier, Marie‐Laure Guillemin, Lars Harms, William Hatchett, Bernard Henrissat, Galice Hoarau, Chloé Jollivet, Alexander Jueterbock, Ehsan Kayal, Andrew H. Knoll, Kazuhiro Kogame, Arthur Le Bars, Catherine Leblanc, Line Le Gall, Ronald D. Ley, Xi Liu, Steven T. LoDuca, Pascal Jean Lopez, Philippe Lopez, Eric Manirakiza, Karine Massau, Stéphane Mauger, Laëtitia Mest, Gurvan Michel, Cátia Monteiro, Chikako Nagasato, Delphine Nègre, Éric Pelletier, Naomi Phillips, Philippe Potin, Stefan A. Rensing, Ellyn Rousselot, Sylvie Rousvoal, Declan C. Schroeder, Delphine Scornet, Anne Siegel, Leı̈la Tirichine, Thierry Tonon, Klaus-Ulrich Valentin, Heroen Verbruggen, Florian Weinberger, Glen L. Wheeler, Hiroshi Kawai, Akira F. Peters, Hwan Su Yoon, Cécile Hervé, Naihao Ye, Éric Bapteste, Myriam Valéro, Gabriel V. Markov, Erwan Corre, Susana M. Coelho, Patrick Wincker, Jean‐Marc Aury, J. Mark Cock,

Tópico(s)

Coastal wetland ecosystem dynamics

Resumo

Brown seaweeds are keystone species of coastal ecosystems, often forming extensive underwater forests, and are under considerable threat from climate change. In this study, analysis of multiple genomes has provided insights across the entire evolutionary history of this lineage, from initial emergence, through later diversification of the brown algal orders, down to microevolutionary events at the genus level. Emergence of the brown algal lineage was associated with a marked gain of new orthologous gene families, enhanced protein domain rearrangement, increased horizontal gene transfer events, and the acquisition of novel signaling molecules and key metabolic pathways, the latter notably related to biosynthesis of the alginate-based extracellular matrix, and halogen and phlorotannin biosynthesis. We show that brown algal genome diversification is tightly linked to phenotypic divergence, including changes in life cycle strategy and zoid flagellar structure. The study also showed that integration of large viral genomes has had a significant impact on brown algal genome content throughout the emergence of the lineage.

Referência(s)