<Emphasis Type="Italic">ZmFKBP20-1</Emphasis> improves the drought and salt tolerance of transformed Arabidopsis |
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| Authors: | Yanli Yu Yanjiao Li Fengjuan Jia Meng Zhao Wencai Li Qi Sun Nana Li Wenlan Li Zhaodong Meng |
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| Institution: | 1.Maize Research Institute, Shandong Academy of Agricultural Sciences/National Engineering Laboratory of Wheat and Maize/Key Laboratory of Biology and Genetic Improvement of Maize in Northern Yellow-huai River Plain,Ministry of Agriculture, P.R. China,Jinan,China;2.Key Laboratory of Agricultural Products Deep Processing Technology of Shandong; Institute of Agro-Food Science and Technology,Shandong Academy of Agricultural Sciences,Jinan, Shandong,P.R. China;3.Shandong Center of Crop Germplasm Resources/Shandong Academy of Agricultural Sciences,Jinan,P.R. China |
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| Abstract: | FK506-binding proteins (FKBPs), which belong to the peptidyl-prolyl cis/trans isomerase superfamily, are involved in plant response to abiotic stresses. A number of FKBP family genes have been isolated in plants, but little has been reported of FKBP genes in maize. In this study, a drought-induced FKBP gene, ZmFKBP20-1, was isolated from maize and was characterized for its role in stress responses using gene expression, protein subcellular localization, transformation in Arabidopsis, expression patterns of the stress-responsive genes, and physiological parameter analysis. During drought and salt stresses, ZmFKBP20-1 transgenic Arabidopsis plants exhibited enhanced tolerance, which was concomitant with the altered expression of stress/ABA-responsive genes, such as COR15a, COR47, ERD10, RD22, KIN1, ABI1, and ABI2. The resistance characteristics of ZmFKBP20-1 overexpression were associated with a significant increase in survival rate. These results suggested that ZmFKBP20-1 plays a positive role in drought and salt stress responses in Arabidopsis and provided new insights into the mechanisms of FKBP in response to abiotic stresses in plants. |
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