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Artículo

Laccaria bicolor MiSSP8 is a small-secreted protein decisive for the establishment of the ectomycorrhizal symbiosis

Pellegrin, Clément; Pellegrin, Clément; Ruytinx, Joske; Guinet, Frédéric; Kemppainen, Minna JohannaIcon ; Frei dit Frey, Nicolas; Puech Pagès, Virginie; Hecker, Arnaud; Pardo, Alejandro GuillermoIcon ; Martin, Francis M.; Veneault Fourrey, Claire
Fecha de publicación: 10/2019
Editorial: Wiley Blackwell Publishing, Inc
Revista: Environmental Microbiology
ISSN: 1462-2912
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Otras Ciencias Biológicas

Resumen

The ectomycorrhizal symbiosis is a predominant tree–microbe interaction in forest ecosystems sustaining tree growth and health. Its establishment and functioning implies a long‐term and intimate relationship between the soil‐borne fungi and the roots of trees. Mycorrhiza‐induced Small‐Secreted Proteins (MiSSPs) are hypothesized as keystone symbiotic proteins, required to set up the symbiosis by modifying the host metabolism and/or building the symbiotic interfaces. L. bicolor MiSSP8 is the third most highly induced MiSSPs in symbiotic tissues and it is also expressed in fruiting bodies. The MiSSP8‐RNAi knockdown mutants are strongly impaired in their mycorrhization ability with Populus, with the lack of fungal mantle and Hartig net development due to the lack of hyphal aggregation. MiSSP8 C‐terminus displays a repetitive motif containing a kexin cleavage site, recognized by KEX2 in vitro. This suggests MiSSP8 protein might be cleaved into small peptides. Moreover, the MiSSP8 repetitive motif is found in other proteins predicted secreted by both saprotrophic and ectomycorrhizal fungi. Thus, our data indicate that MiSSP8 is a small‐secreted protein involved at early stages of ectomycorrhizal symbiosis, likely by regulating hyphal aggregation and pseudoparenchyma formation.
Palabras clave: Missp8 , Laccaria , Mycorrhiza , Symbiosis
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
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URI: http://hdl.handle.net/11336/96229
URL: https://sfamjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1462-2920.14727
DOI: https://doi.org/10.1111/1462-2920.14727
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Articulos(SEDE CENTRAL)
Articulos de SEDE CENTRAL
Citación
Pellegrin, Clément; Pellegrin, Clément; Ruytinx, Joske; Guinet, Frédéric; Kemppainen, Minna Johanna; et al.; Laccaria bicolor MiSSP8 is a small-secreted protein decisive for the establishment of the ectomycorrhizal symbiosis; Wiley Blackwell Publishing, Inc; Environmental Microbiology; 21; 10; 10-2019; 3765-3779
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