Cross protection by heat and cold shock to lethal temperatures in Clostridium perfringens

Brazilian Journal of Microbiology

Santos García¹  Julio C. Limón¹  Norma L. Heredia¹ 

[1] ,Universidad Autónoma de Nuevo León Facultad de Ciencias Biológicas Departamento de MicrobiologíaSan Nicolás,Mexico

关键词: Clostridium perfringens;    heat shock;    cold shock;    Clostridium perfringens;    choque térmico;    choque pelo frio;   

DOI  :  10.1590/S1517-83822001000200007

来源: SciELO

【 摘 要 】

A heat shock pre-treatment of Clostridium perfringens provides protection against lethality from subsequent exposure to cold shock and vice versa. Heat shocked cells were more cold tolerant (one log reduction in 65 min) than control cells (one log reduction in 34 min). On the other hand, cold-shocked cells were more thermotolerant (D55= 17 min) than the control (D55= 6.5 min). The addition of chloramphenicol (an inhibitor of protein synthesis) in the experiments indicates that synthesis of new proteins was necessary for cross protection between both treatments.

【 授权许可】

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