ArticlePlant cell reports2025
VvWUS increases carpel number by upregulating VvAG2 expression in grapevine.
Article in Plant cell reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- Meristem size drives merism lability in the Hexandrum group, a highly variable lineage of Solanum (Solanaceae).Journal of plant research · 2026Article
- Newly found functions and regulatory networks of WOX family: what else does the WOX say?Planta · 2026Review
- WUSCHEL in forest trees: evolutionary organizer, vascular architect, and totipotency switch.Plant molecular biology · 2026Review
- Investigation of mechanisms underlying seedlessness in a Sangiovese somatic variant through comparative genomic and histological analyses.BMC plant biology · 2025Article
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Authors and funding
4 authors.
Funding
Abstract
key messageThe positive effect of VvWUS on carpel number variation in Vitis vinifera 'Xiangfei' is accomplished via forming the heterodimer with VvSTMa and VvSTMb proteins, which enhances the downstream VvAG2 gene expression during grapevine carpel formation. The WUSCHEL-CLAVATA3 signalling pathway plays an essential role in the shoot apical meristem (SAM) maintenance and floral organ development, influencing carpel number and fruit morphology in horticultural plants. This study investigates the role of VvWUS in regulating carpel number in the grapevine cultivar 'Xiangfei', which frequently produces flowers with multiple carpels. We found a positive correlation between VvWUS expression levels and carpel number variation among grapevine cultivars. Transgenic tomato plants overexpressing VvWUS exhibited an increased carpel number and a concomitant expression of SAM-related genes. Further experiments demonstrated that VvWUS interacts with VvSTMa and VvSTMb, forming heterodimers that are crucial for grapevine carpel development. VvWUS was also confirmed to activate VvAG2 expression. Our findings indicate that VvWUS positively regulates carpel number in grapevine by interacting with VvSTMa and VvSTMb and upregulating VvAG2 expression. These results provide a basis for molecular breeding aimed at increasing grape yield and fruit size.
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