Abstract
The pathogenesis-related protein PR10 is essential for plant growth, development, and stress responses. In this study, PR10 genes in cultivated peanut (Arachis hypogaea L.) were systematically identified, after which their phylogenetic relationships, conserved motifs, gene structures, and syntenic relationships were analyzed. A total of 54 AhPR10 genes were identified. They were then divided into eight groups according to their phylogenetic relationships, which were supported by the characterization of gene structures and conserved motifs. Analyses of chromosomal distribution and synteny revealed that segmental duplications were critical for the expansion of the AhPR10 gene family. In addition, the identified AhPR10 genes had constitutive and inducible expression patterns. Notably, AhPR10-7, AhPR10-33, and AhPR10-41 may have crucial functions affecting the resistance of peanut to A. flavus. In vitro fungistatic experiments indicated that recombinant AhPR10-33 can effectively inhibit A. flavus mycelial growth. The study results provide useful insights for future research on AhPR10 functions that protect peanut from the detrimental effects of A. flavus.
Published Version
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