【摘要】 为观察空间条件对微生物的影响,1994年在中国发射的科学返回式卫星上,首次搭载了中国自行设计的空间微生物培养箱.结果表明,所携带的微生物菌株全部存活,其形态、培养牲、遗传学特征及产物产量出现不同程度的变化:妥布拉霉素生产菌出现大量变异菌落;JZ-23-4Trp和Ade缺陷型酵母菌搭载后有15%Trp缺陷型消失;圈卷产色链霉菌产抗生素能力呈不平均分布趋势;巨大芽孢杆菌产酶活力提高11.6%;酵母菌单倍体产SOD活力提高,而二倍体没有变化.空间电泳液的搭载结果表明,它在空间能有效地抑制微生物的生长繁殖.更多还原

【Abstract】 Six kinds of microorganisms were carried in the Space - Microbial - Cultivator onboard recoverable satellite for 15 days from July 3,1994. They were exposed to an environment of microgravity and high dosage radiation. The results showed; all strains were alive after the flight; lots of variation of Tobramycin - producing strains occured; 15 percent of Trp and Ade deficiency strains lost their Trp deficiency feature; activity enzyme produced by Bacillus megaperium was 11. 6% higher than before; SOD content in monoploid yeast was higher after flight but it has no change in biploid yeast.更多还原