Title :

Genome evolution of a nonparasitic secondary heterotroph, the diatom Nitzschia putrida

Author(s) :

Kamikawa, Ryoma [Auteur]
Kyoto University
Mochizuki, Takako [Auteur]
National Institute of Genetics [Shizuoka, Japan] [NIG]
Sakamoto, Mika [Auteur]
National Institute of Genetics [Shizuoka, Japan] [NIG]
Tanizawa, Yasuhiro [Auteur]
National Institute of Genetics [Shizuoka, Japan] [NIG]
Nakayama, Takuro [Auteur]
Tohoku University [Sendai]
Onuma, Ryo [Auteur]
National Institute of Genetics [Shizuoka, Japan] [NIG]
Cenci, Ugo [Auteur]
Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576
Moog, Daniel [Auteur]
Philipps Universität Marburg = Philipps University of Marburg
Speak, Samuel [Auteur]
University of East Anglia [Norwich] [UEA]
Sarkozi, Krisztina [Auteur]
University of East Anglia [Norwich] [UEA]
Toseland, Andrew [Auteur]
University of East Anglia [Norwich] [UEA]
van Oosterhout, Cock [Auteur]
University of East Anglia [Norwich] [UEA]
Oyama, Kaori [Auteur]
Ochanomizu University
Kato, Misako [Auteur]
Ochanomizu University
Kume, Keitaro [Auteur]
Université de Tsukuba = University of Tsukuba
Kayama, Motoki [Auteur]
Kyoto University
Azuma, Tomonori [Auteur]
Kyoto University
Ishii, Ken-ichiro [Auteur]
Kyoto University
Miyashita, Hideaki [Auteur]
Kyoto University
Henrissat, Bernard [Auteur]
Architecture et fonction des macromolécules biologiques [AFMB]
Lombard, Vincent [Auteur]
Architecture et fonction des macromolécules biologiques [AFMB]
Win, Joe [Auteur]
University of East Anglia [Norwich] [UEA]
Kamoun, Sophien [Auteur]
University of East Anglia [Norwich] [UEA]
Kashiyama, Yuichiro [Auteur]
Fukui University of Technology
Mayama, Shigeki [Auteur]
Miyagishima, Shin-ya [Auteur]
National Institute of Genetics [Shizuoka, Japan] [NIG]
Tanifuji, Goro [Auteur]
Mock, Thomas [Auteur]
University of East Anglia [Norwich] [UEA]
Nakamura, Yasukazu [Auteur]
National Institute of Genetics [Shizuoka, Japan] [NIG]

Journal title :

Science Advances

Abbreviated title :

Sci. Adv.

Volume number :

8

Publisher :

American Association for the Advancement of Science (AAAS)

Publication date :

2022-04-29

ISSN :

2375-2548

HAL domain(s) :

Sciences du Vivant [q-bio]

English abstract : [en]

Secondary loss of photosynthesis is observed across almost all plastid-bearing branches of the eukaryotic tree of life. However, genome-based insights into the transition from a phototroph into a secondary heterotroph have ...
Show more >Secondary loss of photosynthesis is observed across almost all plastid-bearing branches of the eukaryotic tree of life. However, genome-based insights into the transition from a phototroph into a secondary heterotroph have so far only been revealed for parasitic species. Free-living organisms can yield unique insights into the evolutionary consequence of the loss of photosynthesis, as the parasitic lifestyle requires specific adaptations to host environments. Here, we report on the diploid genome of the free-living diatom Nitzschia putrida (35 Mbp), a nonphotosynthetic osmotroph whose photosynthetic relatives contribute ca. 40% of net oceanic primary production. Comparative analyses with photosynthetic diatoms and heterotrophic algae with parasitic lifestyle revealed that a combination of gene loss, the accumulation of genes involved in organic carbon degradation, a unique secretome, and the rapid divergence of conserved gene families involved in cell wall and extracellular metabolism appear to have facilitated the lifestyle of a free-living secondary heterotroph.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

ANR Project :

Tester l'hypothèse du ménage à trois

Administrative institution(s) :

Université de Lille
CNRS

Collections :

• Unité de Glycobiologie Structurale et Fonctionnelle (UGSF) - UMR 8576

Research team(s) :

Génétique microbienne

Submission date :

2022-05-12T14:00:32Z
2022-05-25T07:40:13Z