2025/04/10 by Glodia Kgobe, József Geml, Adrienn Geiger +6 · 1 voice
Agricultural and Biological Sciences · Nursing · #Horticultural and Viticultural Research #Nuts composition and effects #Plant Physiology and Cultivation Studies
paper · doi:10.1094/phytofr-09-24-0098-r
openalex publication_date 2025/04/10 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Grapevine is one of the most valuable crops globally, and environmental factors have long been found to have significant effects on them. Studies on the effects of environmental change on grapevine rootstock have focused on either physiology and physical properties or its influence on microbial communities. Despite growing research, the relationship between scion physiology and leaf microbiome is still largely unexplored. Environmental aspects that alter plant physiology may also influence the plant-associated microbiome, including pathogenic, symbiotic, and commensal fungi that could directly affect plant health. The main objective of this study was to explore the influence of rootstock genotype on the scion berry and leaf mycobiome, nutrient content, and physiological activities. To achieve this, we conducted fungal DNA metabarcoding of berry and leaf samples collected in August and September 2020 from the Nagy-Eged Hill terroir in Northern Hungary from grapevines of the same scion cultivar grafted on three different rootstocks. We statistically compared the composition, richness, and abundance of taxonomic and fungal functional groups among the rootstocks and sampling months. The results illustrated significant differences in the measured physiological parameters, nutrient content, and fungal community composition among rootstocks and months. Of the total of 1,474 fungal amplicon sequence variants identified at the genus level, Alternaria and Aureobasidium were the most prolific. Temporal variation was larger than variation among rootstocks. The interaction between rootstock and month explained the highest proportion of variance for the composition of the fungal community. Regression analyses showed positive relationships between leaf mycobiome composition and physiological parameters, such as transpiration rate and stomatal conductance. [Formula: see text] Copyright © 2025 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license .