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Updated: Feb 16, 2026

Quantification of the Potential Impact of Glyphosate-Based Products on Microbiomes

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Published on: January 10, 2022

Grapevine rootstocks shape underground bacterial microbiome and networking but not potential functionality.

Ramona Marasco¹, Eleonora Rolli², Marco Fusi³

¹King Abdullah University of Science and Technology (KAUST), Biological and Environmental Sciences and Engineering Division (BESE), Thuwal, 23955-6900, Saudi Arabia. ramona.marasco@kaust.edu.sa.

|January 5, 2018

Summary

Grapevine rootstocks significantly alter root bacterial communities, selecting specific soil microbes. However, the overall plant-growth promoting functions of these microbes remain consistent across different rootstocks.

Keywords:

Bacterial recruitment Co-occurrence network Endosphere Grapevine Microbial ecology Microbiome Plant growth-promoting bacteria Rhizosphere Rootstock selection

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Area of Science:

Microbiology
Plant Science
Genetics

Background:

Grapevine (Vitis vinifera) plant compartments harbor distinct bacterial microbiomes.
Rootstocks influence the microbiome of aerial plant parts by shaping the root endosphere.
The role of rootstocks in selecting root-associated bacteria is not fully understood.

Purpose of the Study:

To investigate if different grapevine rootstocks influence bacterial recruitment from soil.
To assess the impact of rootstocks on bacterial diversity and functionality in the rhizosphere and root endosphere.

Main Methods:

16S rRNA high-throughput sequencing of root and rhizosphere bacteria in grafted and ungrafted grapevines.
Analysis of bacterial phylogenetic diversity, predicted functional profiles, and co-occurrence networks.
Cultivation-dependent methods to evaluate plant-growth promoting (PGP) potential.

Main Results:

Rootstocks significantly impacted bacterial richness, diversity, and community networks in grapevine roots.
Different rootstocks selected distinct subsets of soil bacteria, including those with PGP traits.
Rootstock-specific selection pressure enhanced niche differentiation within root compartments.

Conclusions:

Rootstock genotype is a key factor shaping the taxonomic and structural composition of grapevine root bacterial communities.
Despite taxonomic shifts, conserved plant-growth promoting functions were maintained across rootstocks.