过渡金属离子对细菌芽孢抗过氧化氢和抗热能力的影响。
The effect of transition metal ions on the resistance of bacterial spores to hydrogen peroxide and to heat.
作者信息
Waites W M, Bayliss C E, King N R, Davies A M
出版信息
J Gen Microbiol. 1979 Jun;112(2):225-33. doi: 10.1099/00221287-112-2-225.
The presence of 10 microM-Cu2+ increased the lethal effect of hydrogen peroxide on spores of Clostridium bifermentans but not on those of Clostridium sporogenes PA 3679, Clostridium perfringens, Bacillus cereus or Bacillus subtilis var. niger. Cu2+ at 100 muM also increased the lethal effect of heat on spores of C. bifermentans but not on those of B. sutilis var. niger. The rate and extent of Cu2+ uptake by spores of C. bifermentans and B. subtilis var. niger were similar, but examination of unstained sections of spores by electron microscopy suggested that Cu2+ is bound by the protoplasts of spores of C. bifermentans but not of B. subtilis var. niger.
10微摩尔/升的Cu2+会增强过氧化氢对双发酵梭菌孢子的致死作用，但对生孢梭菌PA 3679、产气荚膜梭菌、蜡样芽孢杆菌或枯草芽孢杆菌黑色变种的孢子则无此作用。100微摩尔/升的Cu2+也会增强热对双发酵梭菌孢子的致死作用，但对枯草芽孢杆菌黑色变种的孢子则无此作用。双发酵梭菌和枯草芽孢杆菌黑色变种孢子对Cu2+的摄取速率和程度相似，但通过电子显微镜检查未染色的孢子切片表明，Cu2+与双发酵梭菌孢子的原生质体结合，而不与枯草芽孢杆菌黑色变种孢子的原生质体结合。
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