Genome-Wide Identification and Functional Evolution of NLR Gene Family in <i>Capsicum annuum</i>.

ABSTRACT: Capsicum annuum (pepper) is a globally significant Solanaceous crop vulnerable to devastating pathogens such as Phytophthora capsici. Nucleotide-binding leucine-rich repeat (NLRs) proteins are crucial intracellular immune receptors mediating effector-triggered immunity (ETI). This study presents the comprehensive genome-wide identification and analysis of the NLR gene family in pepper using the high-quality 'Zhangshugang' reference genome. We identified 288 high-confidence canonical NLR genes. Chromosomal distribution analysis showed significant clustering, particularly near telomeric regions, with Chr09 harboring the highest density (63 NLRs). Evolutionary analysis demonstrated that tandem duplication is the primary driver of NLR family expansion, accounting for 18.4% of NLR

SUBMITTER: Feng C 

PROVIDER: S-EPMC12562843 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature