Genome-Wide Identification of Gene Family and Their Roles in Sarg in Response to .

Hickory () is a critical tree species of the genus from the Juglandaceae family that contains nutrient-rich nuts. Due to large-scale soil degradation, the pests and diseases of hickory are becoming more and more serious. Thaumatin-like proteins (TLPs) are vital proteins involved in the complex defense process of plant pathogens. In this study, 40 genes were identified genome-widely and phylogenetically grouped into three subfamilies. The sequence of had a conservative pattern, such as eight stable disulfide bonds, REDDD, and G-X-[GF]-X-C-X-T-[GA]-D-C-X(1,2)-G-X-(2,3)-C structure. In total, 57 -elements related to stress-responsive, light-responsive, phytohormone-responsive, and plant-responsive were discovered. Under salicylate (SA), methyl jasmonate (MeJA), and ethephon (ETH) treatments, the expressions of , and had different patterns. This is an indication that most of the genes were upregulated by SA and downregulated by MeJA. Notably, seven genes were significantly upregulated under the inoculation, especially , with an over 20-fold change. Nine genes were shown by subcellular localization analysis to be located at the plasma membrane and cytoplasm. The knowledge of the disease-resistant function of the family in hickory is promoted by these results. A foundation reference for the molecular breeding of this plant in the future is provided by our findings.