title: The action of Cu2+ on Bacillus thuringiensis growth investigated by microcalorimetry.
abstract: 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.
authors.affiliation: Key Laboratory of Agricultural Microbiology of Chinese Agriculture Ministry, Huazhong Agricultural University, Wuhan 430070, P. R. China.
authors.forename: Yao
authors.initials: Y
authors.lastname: Jun
authors.forename: Liu
authors.initials: L
authors.lastname: Yi
authors.forename: Tuo
authors.initials: T
authors.lastname: Yong
authors.forename: Liu
authors.initials: L
authors.lastname: Jianben
authors.forename: Chen
authors.initials: C
authors.lastname: Xiong
authors.forename: Zhou
authors.initials: Z
authors.lastname: Qin
authors.forename: Dong
authors.initials: D
authors.lastname: Jiaxin
authors.forename: Qu
authors.initials: Q
authors.lastname: Songsheng
authors.forename: Yu
authors.initials: Y
authors.lastname: Ziniu
mesh_terms: 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
chemical_list: D002413:Cations, Divalent; D003470:Culture Media; D003300:Copper