The Rootstock's Cotyledon-Regulated Fructokinase ClFRK1 Contributes to Graft Union Formation in Watermelon.

Grafting is a traditional horticultural practice that enhances plant resilience against biotic and abiotic stresses. However, the influence of specific tissues, such as rootstock cotyledons, on graft union formation is not well understood. This study investigates the impact of rootstock cotyledon removal on graft healing in watermelon and its underlying mechanisms.

-mediated auxin release from rootstock cotyledon contributes to healing in watermelon as revealed by seeds soaking-VIGS and cotyledon grafting.

Grafting is a propagation method extensively utilized in cucurbits. However, the mechanisms underlying graft healing remain poorly understood. This study employed self-grafted watermelon plants to investigate how rootstock cotyledon affects healing.