| Title | Rhodospirillum rubrum KS-301에 미치는 제초제 butachlor의 영향 | ||
| Author | 이경미 · 이현순 | ||
| Address | 성균관대학교 이과대학 생물학과 | ||
| Bibliography | Korean Journal of Microbiology, 27(3),285-290, 1989 | ||
| DOI | |||
| Key Words | Butachlor, Rhodospirillum rubrum, Growth rate, Intracytoplasmic membrane, pH value | ||
| Abstract | The biololgical effect of the preemergence rice field herbicide, butachlor(commercial name, Machete) on purple nonsulfur photosynthetic bacterium Rhodospirillum rubrum KS-301 has been studied under cultural conditions. Bacterial growth showed a tendency to decline according to the degree of the concentration of butachlor until 10^-3M and almost stopped at 10^-2M. The growth inhibitory action at 10^-3M of butachlor was evident (4.2-18.7% inhibition of growth rate) but had little effect in nitrogen fixation. Conversely, there was a little enhancement effect(1%) in pyruvate, dinitrogen gas growing cultures. At concentration of 10/sup -3/M, instead of spiral form, rod shapes were observed through phase contrast microscope and instead of vesicular intracytoplasmic membrane, irregular tubular forms were observed through electron microscope. Alkaline pH value slightly reversed the inhibitory action of butachlor. | ||
| Download PDF | Kor_270318_285-290p.pdf | ||