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FEMS Microbiol Ecol. 2015 Nov;91(11). pii: fiv120. doi: 10.1093/femsec/fiv120. Epub 2015 Oct 7.

Tricholoma vaccinum host communication during ectomycorrhiza formation.

Author information

1
Institute of Microbiology, Microbial Communication, Friedrich Schiller University Jena, Neugasse 25, 07745 Jena, Germany katharina.reiher@uni-jena.de.
2
Leibniz Institute for Natural Product Research and Infection Biology - Hans Knöll Institute Beutenbergstraße 11a, 07745 Jena, Germany.
3
Institute of Microbiology, Microbial Communication, Friedrich Schiller University Jena, Neugasse 25, 07745 Jena, Germany.
4
Soil Science of Temperate Ecosystems, Georg August University Göttingen, Büsgenweg 2, 37077 Göttingen, Germany.
5
Center for Integrative Bioinformatics Vienna (CIBIV), Max F. Perutz Laboratories, A-1030 Vienna, Austria.

Abstract

The genome sequence of Tricholoma vaccinum was obtained to predict its secretome in order to elucidate communication of T. vaccinum with its host tree spruce (Picea abies) in interkingdom signaling. The most prominent protein domains within the 206 predicted secreted proteins belong to energy and nutrition (52%), cell wall degradation (19%) and mycorrhiza establishment (9%). Additionally, we found small secreted proteins that show typical features of effectors potentially involved in host communication. From the secretome, 22 proteins could be identified, two of which showed higher protein abundances after spruce root exudate exposure, while five were downregulated in this treatment. The changes in T. vaccinum protein excretion with first recognition of the partner were used to identify small secreted proteins with the potential to act as effectors in the mutually beneficial symbiosis. Our observations support the hypothesis of a complex communication network including a cocktail of communication molecules induced long before physical contact of the partners.

KEYWORDS:

Tricholoma; ectomycorrhiza; genome sequence; proteome; secretome; spruce

PMID:
26449385
DOI:
10.1093/femsec/fiv120
[Indexed for MEDLINE]

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