| Title: |
The genome of Ectocarpus subulatus -a highly stress-tolerant brown alga |
| Authors: |
Dittami, Simon, M.; Corre, Erwan; Brillet-Guéguen, Loraine; Lipinska, Agnieszka; Aite, Méziane; Avia, Komlan; Caron, Christophe; Cho, Chung, Hyun; Collen, Jonas; Cormier, Alexandre; Delage, Ludovic; Doubleau, Sylvie; Frioux, Clémence; Gobet, Angélique; González-Navarrete, Irene; Groisillier, Agnès; Hervé, Cécile; Jollivet, Didier; Kleinjan, Hetty; Leblanc, Catherine; Liu, Xi; Marie, Dominique; Markov, Gabriel, V; Minoche, André, E; Pericard, Pierre; Perrineau, Marie-Mathilde; Peters, Akira, F; Siegel, Anne; Trottier, Camille; Yoon, Hwan, Su; Himmelbauer, Heinz; Boyen, Catherine; Tonon, Thierry |
| Contributors: |
Laboratoire de Biologie Intégrative des Modèles Marins (LBI2M); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff = Roscoff Marine Station (SBR); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS); ABiMS - Informatique et bioinformatique = Analysis and Bioinformatics for Marine Science (ABIMS); Fédération de recherche de Roscoff (FR2424); Station biologique de Roscoff = Roscoff Marine Station (SBR); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff = Roscoff Marine Station (SBR); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS); Dynamics, Logics and Inference for biological Systems and Sequences (Dyliss); Inria Rennes – Bretagne Atlantique; Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-GESTION DES DONNÉES ET DE LA CONNAISSANCE (IRISA-D7); Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA); Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes); Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique); Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes); Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT)-Institut de Recherche en Informatique et Systèmes Aléatoires (IRISA); Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Université de Bretagne Sud (UBS)-École normale supérieure - Rennes (ENS Rennes)-CentraleSupélec-Centre National de la Recherche Scientifique (CNRS)-IMT Atlantique (IMT Atlantique); Institut Mines-Télécom Paris (IMT)-Institut Mines-Télécom Paris (IMT); Sungkyunkwan University Suwon (SKKU); Diversité, adaptation, développement des plantes (UMR DIADE); Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD Occitanie ); Centre for Genomic Regulation - Centre de Regulació Genòmica Barcelona (CRG); Universitat Pompeu Fabra Barcelona (UPF)-Centro Nacional de Analisis Genomico Barcelona (CNAG); Key Laboratory of Intelligent Information Processing, Institute of Computing Technology Beijing; Chinese Academy of Sciences Changchun Branch (CAS); Bezhin Rosko |
| Source: |
https://hal.sorbonne-universite.fr/hal-02333021 ; 2019. |
| Publisher Information: |
HAL CCSD |
| Publication Year: |
2019 |
| Collection: |
Université de Rennes 1: Publications scientifiques (HAL) |
| Subject Terms: |
[SDE.BE]Environmental Sciences/Biodiversity and Ecology; [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry; Molecular Biology/Genomics [q-bio.GN]; [SDV.BV]Life Sciences [q-bio]/Vegetal Biology; [SDV.GEN.GPL]Life Sciences [q-bio]/Genetics/Plants genetics |
| Description: |
Brown algae are multicellular photosynthetic stramenopiles that colonize marine rocky shores worldwide. Ectocarpus sp. Ec32 has been established as a genomic model for brown algae. Here we present the genome and metabolic network of the closely related species, Ectocarpus subulatus Kützing, which is characterized by high abiotic stress tolerance. Since their separation, both strains show new traces of viral sequences and the activity of large retrotransposons, which may also be related to the expansion of a family of chlorophyll-binding proteins. Further features suspected to contribute to stress tolerance include an expanded family of heat shock proteins, the reduction of genes involved in the production of halogenated defence compounds, and the presence of fewer cell wall polysaccharide-modifying enzymes. Overall, E. subulatus has mainly lost members of gene families down-regulated in low salinities, and conserved those that were up-regulated in the same condition. However, 96% of genes that differed between the two examined Ectocarpus species, as well as all genes under positive selection, were found to encode proteins of unknown function. This underlines the uniqueness of brown algal stress tolerance mechanisms as well as the significance of establishing E. subulatus as a comparative model for future functional studies. |
| Document Type: |
report |
| Language: |
English |
| DOI: |
10.1101/307165 |
| Availability: |
https://hal.sorbonne-universite.fr/hal-02333021; https://hal.sorbonne-universite.fr/hal-02333021v1/document; https://hal.sorbonne-universite.fr/hal-02333021v1/file/307165.full.pdf; https://doi.org/10.1101/307165 |
| Rights: |
info:eu-repo/semantics/OpenAccess |
| Accession Number: |
edsbas.FB6652F9 |
| Database: |
BASE |