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Endophytic bacteria are beneficial bacteria that colonize plant tissues and enhance plant growth by a wide variety of mechanisms.In this study,we surveyed the population of endophytic root bacteria and obtained the isolates from roots samples focusing on their ability to produce indole acetic acid(IAA).Endophytic bacteria were isolated from root samples of soybean(Glycine max cv.Dongsheng-1)and corn(Zea mays cv.Xinken-5)in Northeast China.