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The genome of Laccaria bicolor provides insights into mycorrhizal symbiosis

Martin, Francis (author)
Aerts, Andrea (author)
Ahrén, Dag (author)
Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
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Brun, Annick (author)
Duchaussoy, Frédéric (author)
Gibon, Julien (author)
Kohler, Annegret (author)
Lindquist, Erika (author)
Pereda, Veronica (author)
Salamov, Asaf (author)
Shapiro, Harris (author)
Wuyts, Jan (author)
Blaudez, Damien (author)
Buée, Marc (author)
Brokstein, Peter (author)
Canbäck, Björn (author)
Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
Cohen, David (author)
Courty, Pierre Emmanuel (author)
Coutinho, Pedro (author)
Danchin, Etienne (author)
Delaruelle, Christine (author)
Detter, John (author)
Deveau, Aurélie (author)
DiFazio, S (author)
Duplessis, Sebastien (author)
Fraissinet-Tachet, Laurence (author)
Lucic, Eva (author)
Frey-Klett, Pascal (author)
Fourrey, Claire (author)
Feussner, Ivo (author)
Gay, Gilles (author)
Grimwood, Jane (author)
Hoegger, Patrik (author)
Jain, P (author)
Kilaru, Sreedhar (author)
Labbé, Jessy (author)
Lin, Yao Chen (author)
Legué, Valérie (author)
Le Tacon, Francois (author)
Marmeisse, Roland (author)
Melayah, Delphine (author)
Montanini, Barbara (author)
Muratet, Mike (author)
Nehls, Uwe (author)
Niculita-Hirzel, Hélène (author)
Oudot-Le Secq, Marie-Pierre (author)
Peter, Martina (author)
Quesneville, Hadi (author)
Rajashekar, Balaji (author)
Lund University,Lunds universitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
Reich, Marlis (author)
Rouhier, Nicolas (author)
Schmutz, Jeremy (author)
Yin, Tongming (author)
Chalot, Michelle (author)
Henrissat, Bernhard (author)
Kües, Ursel (author)
Lucas, Susan (author)
Van de Peer, Yves (author)
Podila, Gopi (author)
Polle, Andrea (author)
Pukkila, Patricia (author)
Richardson, Paul (author)
Rouzé, Pierre (author)
Sanders, Ian (author)
Stajich, Jason (author)
Tunlid, Anders (author)
Lund University,Lunds universitet,MEMEG,Biologiska institutionen,Naturvetenskapliga fakulteten,Department of Biology,Faculty of Science
Tuskan, Gerald (author)
Grigoriev, Igor (author)
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 (creator_code:org_t)
Springer Science and Business Media LLC, 2008
2008
English.
In: Nature. - : Springer Science and Business Media LLC. - 0028-0836 .- 1476-4687. ; 452:7183, s. 7-88
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  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Mycorrhizal symbioses -- the union of roots and soil fungi -- are universal in terrestrial ecosystems and may have been fundamental to land colonization by plants1,2. Boreal, temperate, and montane forests all depend upon ectomycorrhizae1. Identification of the primary factors that regulate symbiotic development and metabolic activity will therefore open the door to understanding the role of 2 ectomycorrhizae in plant development and physiology, allowing the full ecological significance of this symbiosis to be explored. Here, we report the genome sequence of the ectomycorrhizal basidiomycete Laccaria bicolor (Fig. 1) and highlight gene sets involved in rhizosphere colonization and symbiosis. This 65-million-base genome assembly contains ~ 20,000 predicted protein-encoding genes and a very large number of transposons and repeated sequences. We detected unexpected genomic features most notably a battery of effector-type small secreted proteins (SSP) with unknown function, several of which are only expressed in symbiotic tissues. The most highly expressed SSP accumulates in the proliferating hyphae colonizing the host root. The ectomycorrhizae-specific proteins likely play a decisive role in the establishment of the symbiosis. The unexpected observation that the genome of L. bicolor lacks carbohydrate-active enzymes involved in degradation of plant cell walls, but maintains the ability to degrade non-plant cell walls, reveals the dual saprotrophic and biotrophic lifestyle of the mycorrhizal fungus which enables it to grow within both soil and living plant roots. The predicted gene inventory of the L. bicolor genome, therefore, points to previously unknown mechanisms of symbiosis operating in biotrophic mycorrhizal fungi. The availability of this genome provides an unparalleled opportunity to develop a deeper understanding of the processes by which symbionts interact with plants within their ecosystem in order to perform vital functions in the carbon and nitrogen cycles that are fundamental to sustainable plant productivity.

Subject headings

NATURVETENSKAP  -- Biologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Publication and Content Type

art (subject category)
ref (subject category)

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