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Effect of rootstock diversity and grafted varieties on the structure and composition of the grapevine root mycobiome

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Abstract

Background

Grapevine is associated with various microorganisms, forming an holobiont. The age of the grapevine and the effect of several declines on the root mycobiota was already studied.

Aims

Grapevine is an heterografted plant with two different genotypes coexisting, the one from the rootstock and the one from scion. We studied both the effect of rootstock genotype and the grafting of a grape variety on the grapevine root mycobiota.

Methods

The experiment was carried out in a conservatory vineyard in Burgundy (France) made of two collections: one with rootstocks grown as ungrafted and one with several grape varieties grafted onto the 5C or SO4 rootstocks. Physico-chemical properties were characterized. Soil and roots were sampled to analyse fungal communities with a metabarcoding approach using ITS and LSU as targets and specific of fungi and arbuscular mycorrhizal fungi, respectively.

Results

Whatever the rootstock, a core mycobiota was associated with roots. In addition, part of root mycobiota is influenced either by the rootstock or by the scion or by the soil. The genetic background could not be fully explored, but it could have a role in the differential recruitment of microorganisms.

Conclusion

Further studies should focus on both rootstock and scion part, independently and crosswise, in order to better understand the mechanisms involved in specific root microbial interactions within the grapevine holobiont, and to provide a better response to the health and environmental problems affecting grapevines.

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Data availability

Data are either provided in the manuscript in the main document or as supporting information, or can be requested from the corresponding author.

Abbreviations

AMF:

Arbuscular Mycorrhizal Fungi

ANOSIM:

ANalysis Of SIMilarities

ATVB:

Association Technique Viticole de Bourgogne

bp:

Base pair

CQLS:

Center for Quantitative Life Sciences

cv:

Cultivar

DGGE:

Denaturing Gradient Gel Electrophoresis

DNA:

DeoxyriboNucleic Acid

FROGS:

Find Rapidly OTUs with Galaxy Solution

GEST:

Groupement d'Etude et de Suivi des Terroirs

ITS:

Internal transcribed spacer

LSU:

Large subunit of rDNA

NCBI:

National Center for Biotechnology Information

NMDS:

Non-Metric Multidimensionnal Scale

OTU:

Operationnal Taxonomic Unit

PCR:

Polymerase Chain Reaction

rDNA:

Ribosomal DeoxyriboNucleic Acid

SIMPER:

SIMilarity PERcentage

References

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Acknowledgements

This research was financially supported by the H2020 ERA-net project, the CORE Organic Cofund, and cofunds from the European Commission (BIOVINE project) and the Bourgogne Franche-Comté Regional Council (France).

Funding

This research was financially supported by the H2020 ERA-net project, the CORE Organic Cofund, and cofunds from the European Commission (BIOVINE project) and the Bourgogne Franche-Comté Regional Council (France).

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Authors

Contributions

PA.N. conducted the sampling and analyses. All authors contributed to the writing.

Corresponding author

Correspondence to Pierre-Emmanuel Courty.

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Competing interests

The authors declare no conflict of interest.

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Responsible Editor: Eva Oburger.

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Noceto, PA., Mathé, A., Anginot, L. et al. Effect of rootstock diversity and grafted varieties on the structure and composition of the grapevine root mycobiome. Plant Soil (2024). https://doi.org/10.1007/s11104-024-06624-8

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  • DOI: https://doi.org/10.1007/s11104-024-06624-8

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