a Ministry of Education Key Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Hohai University, Nanjing 210098, People's Republic of China.
Can J Microbiol. 2014 Nov;60(11):745-52. doi: 10.1139/cjm-2014-0347. Epub 2014 Sep 18.
In this study, we tested the potential of Limnoithona sinensis to provide its attached bacteria refuge against disinfection. The experimental results indicated that in water devoid of zooplankton, both UV radiation and chlorine disinfection significantly decreased the viability of free-living bacteria. In the presence of L. sinensis, however, the attached bacteria could survive and rapidly recover from disinfection. This demonstrated that L. sinensis provided protection from external damage to various aquatic bacteria that were attached to its body. The surviving bacteria remained on L. sinensis after disinfection exposure, which enabled a rapid increase in the bacterial population followed by their subsequent release into the surrounding water. Compared with UV radiation, chlorine disinfection was more effective in terms of inactivating attached bacteria. Both UV radiation and chlorine disinfection had little effect in terms of preventing the spread of undesirable bacteria, due to the incomplete inactivation of the bacteria associated with L. sinensis.
在这项研究中，我们测试了中华微囊藻为其附着细菌提供抗消毒作用的潜力。实验结果表明，在没有浮游动物的水中，紫外线辐射和氯消毒都会显著降低自由生活细菌的活力。然而，在存在中华微囊藻的情况下，附着细菌可以存活并迅速从消毒中恢复。这表明中华微囊藻为附着在其身体上的各种水生细菌提供了免受外部伤害的保护。消毒暴露后，存活的细菌仍然留在中华微囊藻上，这使得细菌种群迅速增加，随后它们被释放到周围的水中。与紫外线辐射相比，氯消毒在灭活附着细菌方面更有效。紫外线辐射和氯消毒在防止不良细菌传播方面效果不大，因为与中华微囊藻相关的细菌没有被完全灭活。
