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Chemical and Biological Technologies in Agriculture
Fig. 5 | Chemical and Biological Technologies in Agriculture

Fig. 5

From: Mechanisms involved in plant growth promotion by Enterobacter cloacae DJ under salinity-alkalinity stress

Fig. 5

Determination of putrescine and spermidine in supernatants of DJ using HPLC A. Putrescine standard. B. Spermidine standard. C. Putrescine and spermidine in supernatants of DJ cultivated with ADF medium; peaks: 1, putrescine, 2, spermidine. D. Putrescine and spermidine in supernatants of DJ cultivated with salinity-alkalinity medium; peaks: 3, putrescine, 4, spermidine. E. Comparative changes in putrescine contents under salinity-alkalinity conditions. F. Comparative changes in spermidine contents under salinity-alkalinity conditions. Means ± SDs (n = 3), **P < 0.01 vs control group

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