Effects of exogenous spermine on sweet sorghum during germination under salinity |
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Authors: | Y Y Chai C D Jiang L Shi T S Shi and W B Gu |
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Institution: | (1) Institute of Agrobiological Genetics and Physiology, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, P.R. China;(2) Institute of Agricultural Resource and Environment, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, P.R. China |
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Abstract: | Seedlings of Sorghum bicolor (L.) Moench were subjected to 180 mM NaCl with or without 0.25 mM spermine (SPM) for 7 d. NaCl treatment resulted in the
inhibition of growth and increased the content of free proline, soluble protein and malondialdehyde (MDA). Additionally, it
also enhanced the activity of catalase (CAT), peroxidase (POX) in both shoots and roots, while decreased that of glutathione
reductase (GR). When exogenous spermine was added to the test solution, the growth of sweet sorghum seedlings was improved,
and a smaller increase in the free proline and MDA contents was observed. The addition of spermine also partially increased
the activities of POX and GR, but had no effects on soluble protein content or the activity of CAT. |
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