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Permanent URL to this publication: http://dx.doi.org/10.5167/uzh-47982

Bleuler-Martinez, S; Butschi, A; Garbani, M; Wälti, M A; Wohlschlager, T; Potthoff, E; Sabotiĉ, J; Pohleven, J; Lüthy, P; Hengartner, M O; Aebi, M; Künzler, M (2011). A lectin-mediated resistance of higher fungi against predators and parasites. Molecular Ecology, 20(14):3056-3070.

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Abstract

Fruiting body lectins are ubiquitous in higher fungi and characterized by being synthesized in the cytoplasm and up-regulated during sexual development. The function of these lectins is unclear. A lack of phenotype in sexual development upon inactivation of the respective genes argues against a function in this process. We tested a series of characterized fruiting body lectins from different fungi for toxicity towards the nematode Caenorhabditis elegans, the mosquito Aedes aegypti and the amoeba Acanthamoeba castellanii. Most of the fungal lectins were found to be toxic towards at least one of the three target organisms. By altering either the fungal lectin or the glycans of the target organisms, or by including soluble carbohydrate ligands as competitors, we demonstrate that the observed toxicity is dependent on the interaction between the fungal lectins and specific glycans in the target organisms. The toxicity was found to be dose-dependent such that low levels of lectin were no longer toxic but still led to food avoidance by C. elegans. Finally, we show, in an ecologically more relevant scenario, that challenging the vegetative mycelium of Coprinopsis cinerea with the fungal-feeding nematode Aphelenchus avenae induces the expression of the nematotoxic fruiting body lectins CGL1 and CGL2. Based on these findings, we propose that filamentous fungi possess an inducible resistance against predators and parasites mediated by lectins that are specific for glycans of these antagonists.

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Institute of Molecular Life Sciences
DDC:570 Life sciences; biology
Language:English
Date:2011
Deposited On:03 May 2011 14:45
Last Modified:27 Nov 2013 21:46
Publisher:Wiley-Blackwell
ISSN:0962-1083
Publisher DOI:10.1111/j.1365-294X.2011.05093.x
PubMed ID:21486374
Citations:Web of Science®. Times Cited: 13
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