[Effect of microgravity simulation with clinostat on different strains in Anabaena oryza]

The Biological responses of Anabana oryza (different strains) to microgravity simulation with clinostat were analyzed. The simulation of growth rate was observed under clinoration all the strains, especially in flight strains (AoR16 and AoSR16-17). Anabana oryza HB23 showed higher activity than flight strains in photosynthesis and respiration. The nitrogen which flight strains with high nitrogrnase activity fixed under culturing in ground was used to accumulate phycobiliprotein in cell and excrete ammonium out of cell after meeting the normal metabolism, however, it was mainly used to simulate growth rate under culturing with clinostat. menwhile, it was different from space flight that microgravity simulation with clinostat was not able to induced the phenotype segregation in Anabana oryzae.