Evolutionary genomics of the emergence of brown algae as key components of coastal ecosystems DOI Creative Commons
France Denœud, Olivier Godfroy, Corinne Cruaud

et al.

Cell, Journal Year: 2024, Volume and Issue: 187(24), P. 6943 - 6965.e39

Published: Nov. 1, 2024

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

Language: Английский

Gephyrocapsa huxleyi (Emiliania huxleyi) as a model system for coccolithophore biology DOI Creative Commons
Glen L. Wheeler, Daniela Sturm, Gerald Langer

et al.

Journal of Phycology, Journal Year: 2023, Volume and Issue: 59(6), P. 1123 - 1129

Published: Nov. 20, 2023

Abstract Coccolithophores are the most abundant calcifying organisms in modern oceans and important primary producers many marine ecosystems. Their ability to generate a cellular covering of calcium carbonate plates (coccoliths) plays major role biogeochemistry global carbon cycle. also play an sulfur cycling through production climate‐active gas dimethyl sulfide. The model organism for coccolithophore research is Emiliania huxleyi , now named Gephyrocapsa huxleyi. G. has cosmopolitan distribution, occupying coastal oceanic environments across globe, oceans. Research identified aspects biology, from cell biology ecological interactions. In this perspective, we summarize key advances made using examine emerging tools organism. We discuss steps that need be taken by community advance as suitability other species models specific biology.

Language: Английский

Citations

17
Evolutionary genomics of the emergence of brown algae as key components of coastal ecosystems DOI Open Access
France Denœud, Olivier Godfroy, Corinne Cruaud

et al.

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2024, Volume and Issue: unknown

Published: Feb. 20, 2024

SUMMARY Brown seaweeds are keystone species of coastal ecosystems, often forming extensive underwater forests, that under considerable threat from climate change. Despite their ecological and evolutionary importance, this phylogenetic group, which is very distantly related to animals land plants, still poorly characterised at the genome level. Here we analyse 60 new genomes include all major brown algal orders. Comparative analysis these indicated occurrence several events coinciding approximately with emergence lineage. These included marked gain orthologous gene families, enhanced protein domain rearrangement, horizontal transfer acquisition novel signalling molecules metabolic pathways. The latter enzymes implicated in processes emblematic algae such as biosynthesis alginate-based extracellular matrix, halogen phlorotannin biosynthesis. early genomic innovations enabled adaptation intertidal habitats. subsequent diversification orders tended involve loss features were identified correlated differences life cycle strategy, flagellar structure metabolism. Analysis microevolutionary patterns within genus Ectocarpus deep flow between may be an important factor evolution on more recent timescales. Finally, show integration large viral has had a significant impact content propose process persisted throughout history

Language: Английский

Citations

8
Evolutionary genomics of the emergence of brown algae as key components of coastal ecosystems DOI Creative Commons
France Denœud, Olivier Godfroy, Corinne Cruaud

et al.

Cell, Journal Year: 2024, Volume and Issue: 187(24), P. 6943 - 6965.e39

Published: Nov. 1, 2024

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

Language: Английский

Citations

7