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How deep can ectomycorrhizas go? A case study on Pisolithus down to 4 meters in a Brazilian eucalypt plantation

by José Léonardo de Moraes Gonçalves , Germon, Amandine , Robin, Agnès , Pradier, Céline , Anne-Laure Pablo , Mahé, Frédéric , Heuillard, Pauline , Maiele Cintra Santana , Sauvadet, Marie , Hinsinger, Philippe , George Rodrigues Lambais , Jourdan, Christophe , Elke Jurandy Bran Nogueira Cardoso , Arthur Prudêncio de Araujo Pereira , Fernando Dini Andreote , Tisseyre, Pierre , Sanguin, Hervé , Jean-Paul Laclau , Bouillet, Jean-Pierre , Plassard, Claude

in Ectomycorrhizas / Extracellular matrix / Fungi / Moisture content / Roots / Soil chemistry / Soil improvement / Soil layers / Soil pH / Soil water / Symbiosis / Tips / Tropical environments / Tropical soils / Vertical distribution / Water availability / Water content / Water depth

2019

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How deep can ectomycorrhizas go? A case study on Pisolithus down to 4 meters in a Brazilian eucalypt plantation

2019

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How deep can ectomycorrhizas go? A case study on Pisolithus down to 4 meters in a Brazilian eucalypt plantation

2019

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Journal Article

How deep can ectomycorrhizas go? A case study on Pisolithus down to 4 meters in a Brazilian eucalypt plantation

José Léonardo de Moraes Gonçalves,

Germon, Amandine,

Robin, Agnès,

Pradier, Céline,

Anne-Laure Pablo,

Mahé, Frédéric,

Heuillard, Pauline,

Maiele Cintra Santana,

Sauvadet, Marie,

Hinsinger, Philippe,

George Rodrigues Lambais,

Jourdan, Christophe,

Elke Jurandy Bran Nogueira Cardoso,

Arthur Prudêncio de Araujo Pereira,

Fernando Dini Andreote,

Tisseyre, Pierre,

Sanguin, Hervé,

Jean-Paul Laclau,

Bouillet, Jean-Pierre,

Plassard, Claude

2019

Overview

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 root-associated 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.

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Publisher

Springer Nature B.V

Subject

Ectomycorrhizas

/ Extracellular matrix

/ Fungi

/ Moisture content

/ Roots

/ Soil chemistry

/ Soil improvement