Drivers of arbuscular mycorrhizal fungal communities along a European transect

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Drivers of arbuscular mycorrhizal fungal communities along a European transect

Marie-Lara Bouffaud, Diederik van Tuinen, Daniel Wipf, Dirk Redecker

To cite this version:

Marie-Lara Bouffaud, Diederik van Tuinen, Daniel Wipf, Dirk Redecker. Drivers of arbuscular mycor-

rhizal fungal communities along a European transect. 11. Rencontres de Phytopathologie - Mycologie

- JJC 2016 Journée Jean Chevaugeon, Centre Paul Langevin Aussois. FRA., Jan 2016, Aussois,

France, 25-29 janvier 2016, France. �hal-02741486�

Centre Paul Langevin, CAES du CNRS Aussois (Savoie) – France

https://colloque.inra.fr//jjc2016/

Communication orale Taxonomie, écologie, évolution

Drivers of arbuscular mycorrhizal fungal communities along a European transect

M.L. Bouffaud

, D. van Tuinen

, D. Wipf

, D. Redecker

1

INRA, UMR 1347 Agroécologie, 17 rue Sully, 21000 Dijon, France

2

Present address: Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, D-06120 Halle (Saale), Germany; German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, D- 04103 Leipzig, Germany

3

Université de Bourgogne Franche-Comté, UMR 1347 Agroécologie, 17 rue Sully, 21000 Dijon, France

Arbuscular mycorrhiza is an extremely widespread mutualistic symbiosis between plants and fungi from the Glomeromycota phylum. In their interaction with at least 65% of land plants including many crops, arbuscular mycorrhizal fungi (AMF) are involved in many important ecosystem functions and processes, including nutrient cycling and plant productivity.

However, most studies addressing glomeromycotan community structure have been

conducted at relatively small scale, with only a few ones analyzing AMF diversity at the

regional scale or above, therefore the understanding of the geographic distribution of these

fungi remains limited. Some AMF taxa seem to be surprisingly widespread and many cannot

as yet be directly linked to a certain set of environmental conditions. Our study used the soil

sampling scheme of the European project ECOFINDERS. In this project, the biodiversity of a

large range of different groups of soil microorganisms was analyzed to assess soil functioning

and to define indicators of soil health across Europe. The objective of our study was (i) to

characterize the diversity of glomeromycotan fungi on the European scale, (ii) to define

environmental factors influencing it, and (iii) to determine if a geographic structure exists for

AMF. We therefore used pyrosequencing of the rDNA Internal Transcribed Spacer region to

study glomeromycotan community structure in a transect of 54 samples. Environmental

factors explained a large part of AMF community structure. We identified indicator species

for these parameters, as well as generalists occurring across a wide range of samples, and

assessed the influence of geography on community structure.