Influence of different prey strains on isolation of myxobacteria in saline-alkaline soils of Xinjiang

Abstract:

Abstract:［Objective］We isolated myxobacteria in saline-alkaline soils of Xinjiang using a prey-predator strategy where the prey bacteria can induce the predator myxobacteria to form visible fruiting body，and evaluated intrinsic relationships between prey and predator myxobacteria． ［Methods］ Sixteen bacteria with inductive effects of fruiting body formation were obtained，and then used as preys to isolate the myxobacteria． ［Results］ A total of 55 myxobacteria strains were isolated from 25 soil samples，which were identified to the genera of Myxococcus，Corallococcus，Pyxidicoccus，Cystobacter，and Nannocystis． Besides，6 unpurified isolates were believed to be myxobacteria． All the 16 prey bacteria had preferable inductive effects on Myxococcus spp． ，whereas Pyxidicoccus spp． and Cystobacter spp． were only induced by Gram-positive strains． ［Conclusion］ The prey-predator strategy provided a new and more effective way to isolate myxobacteria．