レタスを侵す病原細菌のストレプトマイシン耐性獲得

概要

論文の詳細を見る
The frequency of emergence of resistant strains in vitro and the acquisition of resistance to streptomycin by a successive culture in media containing streptomycin were investigated using Pseudomonas cichorii, Ps. marginalis pv. marginalis, Ps. viridiflava, Xanthomonas campestris pv. vitians and Erwinia carotovora subsp. carotovora. The resistance was induced by the successive passages through media which contained gradually increasing concentrations of streptomycin in Ps. marginalis pv. marginalis, Ps. cichorii, Ps. viridiflava and E. carotovora subsp. carotovora, which became resistant at 800 ppm of streptomycin after 5, 6, 6, and 8 transfers respectively. No resistant strains of X. campestris pv. vitians were obtained after 8 times of transfers. The frequencies of emergence of spontaneous resistant strains to streptomycin were 1/10^7 for Ps. marginalis pv. marginalis, and 1/10^8 for Ps. viridiflava and E. carotovora subsp. carotovora. Such strains were not found in Ps. cichorii and X. campestris pv. vitians.
日本植物病理学会の論文
1981-07-25