自然环境中功能菌活的非可培养状态形成及复苏机制研究进展

Research progress on the formation and resuscitation mechanism of viable but non-culturable state of functional bacteria in natural environment

细菌在环境胁迫下可进入活的非可培养(viable but non-culturable, VBNC)状态,不再分裂但具有代谢活性,且能够在适宜条件下复苏.VBNC状态限制了功能菌群在环境治理方面的作用,开展关于VBNC状态的形成及复苏机制研究可为激发VBNC状态功能菌在生物修复中发挥作用提供理论基础.本文对环境中VBNC状态细菌的表型、VBNC状态的潜在污染降解菌、VBNC状态细菌的形成及复苏机制进行综述,以期为进一步探究VBNC状态功能菌在环境中的作用提供科学依据,并为揭示VBNC状态功能菌对环境污染物降解及元素循环的贡献提供思路.

Bacteria are likely to enter into the viable but nonculturable(VBNC) state under environmental stress. They no longer divide but have metabolic activity, and resuscitate under suitable conditions. VBNC state limits the application of functional bacteria in environmental governance. Study on the formation and resuscitation mechanism of VBNC bacteria will provide a theoretical basis for stimulating the functional bacteria in bioremediation. In this paper, the phenotype of VBNC state bacteria, the potential pollution degradation bacteria of VBNC state, the formation and resuscitation mechanism of VBNC bacteria are reviewed, in order to provide a scientific basis for further exploring the role of functional bacteria in VBNC state in the environment and the insights into revealing the contribution of functional bacteria in VBNC state to pollution degradation and element cycles.