Genome-wide identification and functional characterization of NPR1-like genes in Actinidia deliciosa.

ABSTRACT: NPR1 (Nonexpresser of Pathogenesis-Related Genes 1) is a central regulator of salicylic acid (SA)-mediated defense signaling in plants and plays a pivotal role in modulating systemic acquired resistance (SAR). Despite its functional importance in biotic stress responses, a comprehensive understanding of the NPR1 gene family in Actinidia deliciosa (kiwifruit) has been lacking. In this study, we performed a genome-wide identification and characterization of NPR1-like genes in A. deliciosa, identifying five candidate genes (AdNPR1-AdNPR5) containing conserved BTB/POZ and ankyrin repeat domains of NPR1 Protein. Phylogenetic analysis revealed that AdNPR3 and AdNPR4 grouped closely with AtNPR3/AtNPR4, indicating possible sub-functionalization related to pathogen-specific defense signaling. Conse

SUBMITTER: Zhong W 

PROVIDER: S-EPMC12614555 | biostudies-literature | 2025

REPOSITORIES: biostudies-literature