전남대학교 특용작물학실험실, Chonnam national university Special Crop Science Lab

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> Korean ginseng (Panax ginseng C. A. Meyer) consists of nine cultivars from three Jakyung, Chungkyung, and Hwangsook lines. Among three previously identified PR-10 homologs from ginseng (PgPR10-1, PgPR10-2, and PgPR10-3), we found that the exact same sequence of PgPR10-2 exist in all tested nine cultivars. But a deletion and SNP was found in American ginseng (Panax quinquefolius). PR-10 proteins are known to be small and cytosolic, and showed similar three-dimensional structure. Here we show that the heterologous overexpression of PgPR10-1 in Arabidopsis showed enhanced resistance against Pseudomonas syringe, Fusarium oxysporum, and Botrytis cinerea and in-frame tagging with fluorescent protein showed its cytoplasm and nucleus localization. Protein–protein interaction of PgPR10-2 with PgPR10-1, PgPR10-2 and PgPR10-3 suggests that the PgPR10 proteins might form multimeric complexes in different cellular compartments to function in development and in defense-related mechanism. Differential response of PgPR10-1 and PgPR10-2 against different sets of biotic stresses in ginseng plant supports this notion.
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“ Special Crop Science Lab ”

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