The genome of Ectocarpus subulatus – A highly stress-tolerant brown alga
Simon M. Dittami
(1)
,
Erwan Corre
(2, 3)
,
Loraine Brillet-Guéguen
(4, 3, 2)
,
Agnieszka Lipinska
(1)
,
Noé Pontoizeau
(1)
,
Meziane Aite
(5)
,
Komlan Avia
(6)
,
Christophe Caron
(4)
,
Chung Hyun Cho
(7)
,
Jonas Collen
(1)
,
Alexandre Cormier
(1)
,
Ludovic Delage
(1)
,
Sylvie Doubleau
(8)
,
Clémence Frioux
(9, 10)
,
Angélique Gobet
(1)
,
Irene González-Navarrete
(11)
,
Agnès Groisillier
(1)
,
Cécile Herve
(1)
,
Didier Jollivet
(2)
,
Hetty Kleinjan
(1)
,
Catherine Leblanc
(1)
,
Xi Liu
(2, 3)
,
Dominique Marie
(12)
,
Gabriel V Markov
(1)
,
André E. Minoche
(11, 13)
,
Misharl Monsoor
(4, 3, 2)
,
Pierre Péricard
(4, 3, 2)
,
Marie-Mathilde Perrineau
(1)
,
Akira F. Peters
(14)
,
Anne Siegel
(15)
,
Amandine Siméon
(1)
,
Camille Trottier
(15)
,
Hwan Su Yoon
(7)
,
Heinz Himmelbauer
(16)
,
Catherine Boyen
(1)
,
Thierry Tonon
(17, 1)
1
LBI2M -
Laboratoire de Biologie Intégrative des Modèles Marins
2 SBR - Station biologique de Roscoff = Roscoff Marine Station
3 FR2424 - Fédération de recherche de Roscoff
4 ABIMS - ABiMS - Informatique et bioinformatique = Analysis and Bioinformatics for Marine Science
5 UR - Université de Rennes
6 SVQV - Santé de la vigne et qualité du vin
7 SKKU - Sungkyunkwan University [Suwon]
8 UMR DIADE - Diversité, adaptation, développement des plantes
9 PLEIADE - from patterns to models in computational biodiversity and biotechnology
10 Dyliss - Dynamics, Logics and Inference for biological Systems and Sequences
11 CRG - Centre for Genomic Regulation - Centre de Regulació Genòmica [Barcelona]
12 ECOMAP - ECOlogy of MArine Plankton
13 MPIMG - Max Planck Institute for Molecular Genetics
14 Bezhin Rosko
15 IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires
16 MPIMG - Max-Planck-Institut für Molekulare Genetik
17 University of York [York, UK]
2 SBR - Station biologique de Roscoff = Roscoff Marine Station
3 FR2424 - Fédération de recherche de Roscoff
4 ABIMS - ABiMS - Informatique et bioinformatique = Analysis and Bioinformatics for Marine Science
5 UR - Université de Rennes
6 SVQV - Santé de la vigne et qualité du vin
7 SKKU - Sungkyunkwan University [Suwon]
8 UMR DIADE - Diversité, adaptation, développement des plantes
9 PLEIADE - from patterns to models in computational biodiversity and biotechnology
10 Dyliss - Dynamics, Logics and Inference for biological Systems and Sequences
11 CRG - Centre for Genomic Regulation - Centre de Regulació Genòmica [Barcelona]
12 ECOMAP - ECOlogy of MArine Plankton
13 MPIMG - Max Planck Institute for Molecular Genetics
14 Bezhin Rosko
15 IRISA - Institut de Recherche en Informatique et Systèmes Aléatoires
16 MPIMG - Max-Planck-Institut für Molekulare Genetik
17 University of York [York, UK]
Simon M. Dittami
Connectez-vous pour contacter l'auteur
- Function : Correspondent author
- PersonId : 2339
- IdHAL : simon-dittami
- ORCID : 0000-0001-7987-7523
- IdRef : 142926493
Connectez-vous pour contacter l'auteur
Erwan Corre
- Function : Author
- PersonId : 756923
- ORCID : 0000-0001-6354-2278
- IdRef : 154781142
Komlan Avia
- Function : Author
- PersonId : 748095
- IdHAL : kavia
- ORCID : 0000-0001-6212-6774
Clémence Frioux
- Function : Author
- PersonId : 12140
- IdHAL : clemence-frioux
- ORCID : 0000-0003-2114-0697
- IdRef : 234416432
Agnès Groisillier
- Function : Author
- PersonId : 5921
- IdHAL : agnes-groisillier
- IdRef : 13193886X
Didier Jollivet
- Function : Author
- PersonId : 908687
- IdHAL : didier-jollivet
- ORCID : 0000-0001-8042-1857
Catherine Leblanc
- Function : Author
- PersonId : 3421
- IdHAL : catherineleblanc
- ORCID : 0000-0001-7149-0332
- IdRef : 178655279
Gabriel V Markov
- Function : Author
- PersonId : 180279
- IdHAL : gabriel-markov
- ORCID : 0000-0002-8566-7482
- IdRef : 155301837
Pierre Péricard
- Function : Author
- PersonId : 736703
- IdHAL : pierre-pericard
- ORCID : 0000-0001-8167-6448
- IdRef : 221701079
Catherine Boyen
- Function : Author
- PersonId : 1353
- IdHAL : catherine-boyen
- IdRef : 032106335
Thierry Tonon
- Function : Author
- PersonId : 2649
- IdHAL : thierry-tonon
- ORCID : 0000-0002-1454-6018
- IdRef : 132275414
Abstract
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.
Origin : Files produced by the author(s)
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