条件致病菌及生物降解真菌的空间生物学效应研究

Biological Effects of Space Flight on Several Opportunistic Pathogenic Bacteria and Biodestructive Fungi.

目的研究空间条件下几株条件致病菌及生物降解真菌的生物学效应。方法可能影响航天员身体健康及降解空间材料的几株微生物,包括细菌、真菌、放线菌,经搭载7d后,应用常规微生物检验技术对它们的一些生物学特性进行初步研究。结果空间条件下菌株的存活率有明显提高,普遍生长较快,多数菌株产生色素;形态特征也有不同程度的变化;某些菌株对个别药物的抗性有所减弱,对多数药物的抗性不变。结论微生物在空间条件下繁殖能力增强,搭载后生长加快,形态分化提前,对药物的抗性基本稳定。

Objective To investigate biological effects of space flight on several conditional pathogenic bacteria and biodestructive fungi. Method Several potentially pathogenic or biodegrading microorganisms, including bacteria, actinomyces and fungi, were carried on-board spacecraft for 7 d. Some of the biological characteristics were studied by using general microbial test technology after recovery. Result In space condition, survival and growth rate were promoted, and soluble pigments were produced,while morphological properties were changed differently.The antibiotic-sensitivity of certain strains decreased, while most of them showed no changes. Conclusion The reproduction ability and growth rate of these microorganisms are promoted after being carried into space, and morphological differentiation increase.The resistance to antibiotics is stable.