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Title:
Gene Transfer from Bacteria and Archaea Facilitated Evolution of an Extremophilic Eukaryote
Authors:
Schönknecht, Gerald; Chen, Wei-Hua; Ternes, Chad M.; Barbier, Guillaume G.; Shrestha, Roshan P.; Stanke, Mario; Bräutigam, Andrea; Baker, Brett J.; Banfield, Jillian F.; Garavito, R. Michael; Carr, Kevin; Wilkerson, Curtis; Rensing, Stefan A.; Gagneul, David; Dickenson, Nicholas E.; Oesterhelt, Christine; Lercher, Martin J.; Weber, Andreas P. M.
Affiliation:
AA(Department of Botany, Oklahoma State University, Stillwater, OK 74078, USA.; Institute of Plant Biochemistry, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany), AB(Institute for Computer Science, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.; European Molecular Biology Laboratory (EMBL) Heidelberg, EMBL, Meyerhofstrasse 1, 69117 Heidelberg, Germany), AC(Department of Botany, Oklahoma State University, Stillwater, OK 74078, USA), AD(Department of Plant Biology, 612 Wilson Road, Michigan State University, East Lansing, MI 48824, USA), AE(Department of Plant Biology, 612 Wilson Road, Michigan State University, East Lansing, MI 48824, USA), AF(Institut für Mathematik und Informatik, Ernst Moritz Arndt Universität Greifswald, Walther-Rathenau-Straße 47, 17487 Greifswald, Germany), AG(Institute of Plant Biochemistry, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany), AH(Department of Earth and Environmental Sciences, 4011 CC Little Building, 1100 North University Avenue, University of Michigan, Ann Arbor, MI 48109, USA), AI(Department of Earth and Planetary Science, Department of Environmental Science, Policy, and Management, University of California, Berkeley CA 94720–4767, USA), AJ(Department of Biochemistry and Molecular Biology, 603 Wilson Road, Michigan State University, East Lansing, MI 48824, USA), AK(Research Technology Support Facility, Plant Biology Laboratories, 612 Wilson Road, Michigan State University, East Lansing, MI 48824, USA), AL(Department of Plant Biology, 612 Wilson Road, Michigan State University, East Lansing, MI 48824, USA.; Research Technology Support Facility, Plant Biology Laboratories, 612 Wilson Road, Michigan State University, East Lansing, MI 48824, USA), AM(Faculty of Biology and BIOSS Centre for Biological Signalling Studies, University of Freiburg, Schänzlestrasse 1, 79104 Freiburg, Germany), AN(UMR USTL-INRA 1281 "Stress Abiotiques et Différenciation des Végétaux cultivés," Université de Lille 1, 59650 Villeneuve d'Ascq Cédex, France), AO(Department of Microbiology and Molecular Genetics, Oklahoma State University, Stillwater, OK 74078, USA), AP(CyanoBiofuels GmbH, Magnusstrasse 11, 12489 Berlin, Germany), AQ(Institute for Computer Science, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.; Cluster of Excellence on Plant Sciences (CEPLAS), Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany), AR(Institute of Plant Biochemistry, Heinrich-Heine-Universität Düsseldorf, 40225 Düsseldorf, Germany.; Department of Plant Biology, 612 Wilson Road, Michigan State University, East Lansing, MI 48824, USA)
Publication:
Science, Volume 339, Issue 6124, pp. 1207-1210 (2013). (Sci Homepage)
Publication Date:
03/2013
Category:
EVOLUTION, MICROBIO Microbiology, Genetics, Materials-Science
Origin:
SCIENCE
Abstract Copyright:
(c) 2013: Science
DOI:
10.1126/science.1231707
Bibliographic Code:
2013Sci...339.1207S

Abstract

Some microbial eukaryotes, such as the extremophilic red alga Galdieria sulphuraria, live in hot, toxic metal-rich, acidic environments. To elucidate the underlying molecular mechanisms of adaptation, we sequenced the 13.7-megabase genome of G. sulphuraria. This alga shows an enormous metabolic flexibility, growing either photoautotrophically or heterotrophically on more than 50 carbon sources. Environmental adaptation seems to have been facilitated by horizontal gene transfer from various bacteria and archaea, often followed by gene family expansion. At least 5% of protein-coding genes of G. sulphuraria were probably acquired horizontally. These proteins are involved in ecologically important processes ranging from heavy-metal detoxification to glycerol uptake and metabolism. Thus, our findings show that a pan-domain gene pool has facilitated environmental adaptation in this unicellular eukaryote.
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