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KMID : 0368420040470030167
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Journal of Plant Biology
2004 Volume.47 No. 3 p.167 ~ p.167
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Isolation and characterization ofPanax ginseng 14-3-3 gene family
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Chung Hwa-Jee
Park Joo-Young
Cho In-Sook
Hur Cheol-Goo
Choi Dong-Woog
Liu Jang-Ryol
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Abstract
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14-3-3 proteins are a family of conserved proteins expressed in all eukaryotes. They function as regulators in signaling pathways through protein-protein interaction. These proteins have been implicated in plant metabolism, development, and responses to abiotic and biotic stresses. Here, we isolated six cDNAs encoding 14-3-3 proteins ofPanax ginseng, designated asPg14-3-3, by searching the ginseng EST database. Their degree of amino acid identity ranged from 53 to 84%. Phylogenetic analysis showed that thePg14-3-3 isoforms can be divided into two groups by early duplication, with one group being further split into three subgroups because of subsequent duplication events.Pg14-3-3s are differentially expressed in various root tissues and leaves, and their transcript levels are up-or down-regulated by either cold or drought stresses. These results suggest a possible role for Pg14-3-3 proteins in abiotic stress responses.
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KEYWORD
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14-3-3 protein, abiotic stress, Panax ginseng, phylogenetic analysis
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