Action of Cu2+ on Bacillus thuringiensis Growth Investigated by Microcalorimetry |
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| Authors: | Jun Yao Yi Liu Yong Tuo Jianben Liu Xiong Chen Qin Zhou Jiaxin Dong Songsheng Qu Ziniu Yu |
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| Institution: | (1) Key Laboratory of Agricultural Microbiology, Ministry of Agriculture, Huazhong Agricultural University, Wuhan, 430070, China;(2) Department of Chemistry, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, 430072, China;(3) College of Life Sciences and Chemistry, Jishou University, Jishou, Hunan, 416000, China |
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| Abstract: | By using an LKB-2277 Bioactivity Monitor, ampoule mode, the heat output of Bacillus thuringiensis growth metabolism is determined at 28°C and the effect of Cu2+ on B. thuringiensis growth is studied. Copper is regarded as an essential trace element for life. Its deficiency may be the cause of diseases. Cu2+ at different concentrations has different effects on B. thuringiensis growth metabolism: a low concentration (0–30  g/ml) of Cu2+ can promote the growth of B. thuringiensis, a high concentration (40–120 g/ml) can inhibit growth of the bacteria, and a concentration of Cu2+ of up to 130 g/ml completely inhibits B. thuringiensis growth. |
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