Genome-wide identification and functional characterization of NPR1-like genes in Actinidia deliciosa
Weimin Zhong, Yuexia Wang, Shiming Han, Jihong Dong, Yumei Fang, Xiaoling Xu, Muhammad Umar Rasheed, Aiman Malik, Qurban Ali, Muhammad Ashfaq, Jia Zhou, Abhijeet Kashyap, Abhijeet Kashyap, Abhijeet Kashyap
TL;DR
This study identifies and characterizes NPR1-like genes in kiwifruit, revealing their roles in plant defense and evolution.
Contribution
The first genome-wide analysis of NPR1-like genes in Actinidia deliciosa, revealing their structural, evolutionary, and functional roles in defense signaling.
Findings
Five NPR1-like genes (AdNPR1–AdNPR5) were identified with conserved domains in kiwifruit.
AdNPR3 and AdNPR4 are linked to pathogen-specific defense responses and show differential expression under infection.
The NPR1 gene family evolved under strong purifying selection and segmental duplication.
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. Conserved motif and gene structure analyses indicated strong structural conservation, while promoter…
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Taxonomy
TopicsPlant-Microbe Interactions and Immunity · Plant Pathogenic Bacteria Studies · Plant Gene Expression Analysis