The action of Cu2+ on Bacillus thuringiensis growth investigated by microcalorimetry.
By using an LKB-2277 Bioactivity Monitor, ampoule mode, the heat output of Bacillus thuringiensis growth metabolism has been determined at 28 degrees C and effect of Cu2+ on B. thuringiensis growth was studied. Copper has been regarded as an essential trace element for life. Its deficiency may be the cause of diseases. Cu2+ of different concentration have different effects on B. thuringiensis growth metabolism, Cu2+ of low concentration (0-30 micrograms/ml) can promote the growth of B. thuringiensis, and Cu2+ of high concentration (40-120 micrograms/ml) is able to inhibit its growth and B. thuringiensis can't grow at all when the concentration of Cu2+ is up to 130 micrograms/ml.
Jun
Yao
Y
Key Laboratory of Agricultural Microbiology of Chinese Agriculture Ministry, Huazhong Agricultural University, Wuhan 430070, P. R. China.
Yi
Liu
L
Yong
Tuo
T
Jianben
Liu
L
Xiong
Chen
C
Qin
Zhou
Z
Jiaxin
Dong
D
Songsheng
Qu
Q
Ziniu
Yu
Y
D001413:Bacillus thuringiensis / Q000187:drug effects* / Q000254:growth & development / Q000378:metabolism; D002151:Calorimetry; D002413:Cations, Divalent; D003300:Copper / Q000494:pharmacology*; D003470:Culture Media; D004305:Dose-Response Relationship, Drug; D017753:Ecosystem; D013816:Thermodynamics
D002413:Cations, Divalent; D003470:Culture Media; D003300:Copper