Subregional pedoclimatic conditions with contrasted UV-radiation shape host-microbiome and metabolome phenotypes in the grape berry.

ABSTRACT: This study used integrative omics to address the response of key elements of the grapevine holobiont to contrasted pedoclimatic conditions found in distinct subregions of Douro Valley (Portugal). A metabolic OPLS-DA model predicted with 100 % accuracy the geographic origin of berries; higher UV radiation, higher temperature and lower precipitation stimulated the accumulation of phenolic acids, flavonols and malvidin conjugates, in detriment of amino acids, organic acids, flavan-3-ols, proanthocyanidins and non-malvidin anthocyanins. Metabarcoding showed a trade-off between bacteria and fungal diversity among subregions, with Pseudomonas, Lactobacillus, Aspergillus and Penicillium acting as intraregional microbial markers. The high phenotypic plasticity of berries and t

SUBMITTER: Martins V 

PROVIDER: S-EPMC11750517 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature