IbPIF1 confers stem nematode resistance by regulating secondary metabolites in sweet potato.

ABSTRACT: The stem nematode (Ditylenchus destructor Thorne) is a pervasive and destructive plant-parasitic nematode worldwide, inflicting severe agricultural and economic losses in a wide range of crops. Despite its global impact, the molecular mechanisms underlying plant resistance to this pathogen remain poorly understood. Our previous studies in sweet potato (Ipomoea batatas L.) identified IbPIF1 as one of the most strongly induced genes following stem nematode infection, positioning it as a key candidate for unravelling host defence strategies. In this study, we revealed that overexpression of IbPIF1 not only activates systemic immunity and strengthens physical barrier functions, but also drives the accumulation of phytoalexins, significantly enhancing nematode resistance in transgenic plants. F

SUBMITTER: Nie N 

PROVIDER: S-EPMC12483972 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature