The class B heat shock factor HSFB1 regulates heat tolerance in grapevine.

ABSTRACT: Grape is a widely cultivated crop with high economic value. Most cultivars derived from mild or cooler climates may not withstand increasing heat stress. Therefore, dissecting the mechanisms of heat tolerance in grapes is of particular significance. Here, we performed comparative transcriptome analysis of Vitis davidii 'Tangwei' (heat tolerant) and Vitis vinifera 'Jingxiu' (heat sensitive) grapevines after exposure to 25°C, 40°C, or 45°C for 2 h. More differentially expressed genes (DEGs) were detected in 'Tangwei' than in 'Jingxiu' in response to heat stress, and the number of DEGs increased with increasing treatment temperatures. We identified a class B Heat Shock Factor, HSFB1, which was significantly upregulated in 'Tangwei', but not in 'Jingxiu', at high temperature. VdH

SUBMITTER: Chen H 

PROVIDER: S-EPMC10018785 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature