Publications des scientifiques de l'IRD

Robin A., Pradier C., Sanguin H., Mahé F., Lambais G. R., Pereira A. P. D., Germon A., Santana M. C., Tisseyre Pierre, Pablo Anne-Laure, Heuillard P., Sauvadet Marie, Bouillet J. P., Andreote F. D., Plassard C., Gonçalves J. L. D., Cardoso Ejbn, Laclau J. P., Hinsinger P., Jourdan C. (2019). How deep can ectomycorrhizas go? A case study on Pisolithus down to 4 meters in a Brazilian eucalypt plantation. Mycorrhiza, 29 (6), p. 637-648. ISSN 0940-6360.

Titre du document
How deep can ectomycorrhizas go? A case study on Pisolithus down to 4 meters in a Brazilian eucalypt plantation
Année de publication
2019
Type de document
Article référencé dans le Web of Science WOS:000518382900009
Auteurs
Robin A., Pradier C., Sanguin H., Mahé F., Lambais G. R., Pereira A. P. D., Germon A., Santana M. C., Tisseyre Pierre, Pablo Anne-Laure, Heuillard P., Sauvadet Marie, Bouillet J. P., Andreote F. D., Plassard C., Gonçalves J. L. D., Cardoso Ejbn, Laclau J. P., Hinsinger P., Jourdan C.
Source
Mycorrhiza, 2019, 29 (6), p. 637-648 ISSN 0940-6360
Despite the strong ecological importance of ectomycorrhizal (ECM) fungi, their vertical distribution remains poorly understood. To our knowledge, ECM structures associated with trees have never been reported in depths below 2 meters. In this study, fine roots and ECM root tips were sampled down to 4-m depth during the digging of two independent pits differing by their water availability. A meta-barcoding approach based on Illumina sequencing of internal transcribed spacers (ITS1 and ITS2) was carried out on DNA extracted from root samples (fine roots and ECM root tips separately). ECM fungi dominated the rootassociated fungal community, with more than 90% of sequences assigned to the genus Pisolithus. The morphological and barcoding results demonstrated, for the first time, the presence of ECM symbiosis down to 4-m. The molecular diversity of Pisolithus spp. was strongly dependent on depth, with soil pH and soil water content as primary drivers of the Pisolithus spp. structure. Altogether, our results highlight the importance to consider the ECM symbiosis in deep soil layers to improve our understanding of fine roots functioning in tropical soils.
Plan de classement
Biologie du sol [074] ; Sciences du monde végétal [076] ; Biotechnologies [084]
Description Géographique
BRESIL ; ZONE TROPICALE
Localisation
Fonds IRD [F B010078003]
Identifiant IRD
fdi:010078003
Contact