抄録
Twenty-five strains of Pseudomonas syringae pv. glycinea were studied for their ability to produce coronatine and symptoms on soybean leaves. Seven strains induced lesions accompanied by halos on soybean leaves after natural and artificial infection, whereas the other strains induced lesions without halos. Five of the seven halo-inducers also produced coronatine on potato tuber tissues, whereas the 18 non-halo inducing strains did not. However, all 25 strains produced coronatine in Woolley's liquid medium. In addition, all twenty-five strains had a pCOR1-like plasmid in size. The cfl region in pCOR1, which is correlated with coronatine production in P. syringae pv. atropurpurea, was also detected in the pCOR1-like plasmids in all 25 strains. These results indicate that P. syringae pv. glycinea essentially has coronatine-producing ability, but its expression in planta may be regulated by a control system.
