ArticleFrontiers in plant science2025
Heat waves reveal additive genetic effects leading to sunburn resilience of grapevine berries.
Article in Frontiers in plant science, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- Identification of Candidate Heat-Tolerance Genes in Maize by Integrating Linkage and Transcriptomic Analyses.Plants (Basel, Switzerland) · 2026Article
- Strengthening grapevine berry physiology and composition through kaolin-silicon foliar applications under summer stress in mediterranean vineyard.Frontiers in plant science · 2026Article
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Authors and funding
6 authors.
Funding
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Abstract
Grape sunburn is an abiotic stress response induced under heat wave conditions. Heat stress is reaching new dimensions in terms of intensity and frequency in European cool-climate wine-growing regions. The damage to grape berries manifests in browning and shriveling, leading to yield loss and can reduce wine quality. Established management strategies like defoliation of the cluster zone in order to reduce fungal infection pressure could enhance this problem. Climate-adapted cultivars that are resilient to sunburn would resolve those trade-offs in vineyard management. In recent years, grapes grown in the Palatinate wine region of Germany have been affected by sunburn at an unprecedented rate. The intensity of sunburn damage in experimental fields located in this region was assessed for five years, taking advantage of the unexpectedly frequent heat waves in 2019, 2020, and 2022. Phenotyping of the grape sunburn symptoms was carried out in a segregating F1 mapping population of 'Calardis Musqué' x 'Villard Blanc' and a number of varieties. The population consists of 150 genotypes cultivated in two adjacent plots with four plants per F1-individual each, providing sufficient grape material for a reliable evaluation. Composite interval mapping (CIM) using a genetic map and 5 years of phenotypic field data of sunburn damage revealed two strong QTLs located on the lower arm of chromosome 11 with LOD
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