Identification and antimicrobial activity analysis of a marine Alteromonas YTW-10

The strain YTW-10 was isolated from marine sediments collected from the Yantai beach.It was able to grow in the medium containing 1%～15% NaCl with the optimal growth salinity of 7%.The optimum growth tem-perature was 37 ℃ and the initial pH value was 8.Based on morphology,biochemical characteristics,as well as phylogenetic analysis,the strain YTW-10 was identified as Alteromonas.Three marine pathogenic bacteria and three crop pathogenic fungi were used as indicators in YTW-10 antimicrobial experiment.The result showed that YTW-10 had strong antimicrobial activity to Curvlaria lunata,Fusarium ozysporum,and Fusarium graminearum Schw.