Objective: To study biological effects of space flight on purple nonsulfur photosynthetic bacteria.
Methods: Two purple nonsulfur photosynthetic bacteria, Rhodopseudomonas palustris H3 and Rhodobacter sphaeroides ZGY, were carried on satellite for 15 days and some of their biological effects were studied after recovery.
Results: In space condition, survival rate of bacteria was promoted. The purification of organic wastewater, removal of nitrite, degradation of phenol and decolorization of acid red B were enhanced, and the resistance of both strains to medicine was stable.
Conclusion: The major morphological and physiological characteristics of loaded strains H3-S and ZGY-S were not changed after space flight.