| Title | 홍색 비유황광합성 세균에 미치는 제초제 butachlor의 영향 | ||
| Author | 이경미 · 이현순 | ||
| Address | 성균관대학교 이과대학 생물학과 | ||
| Bibliography | Korean Journal of Microbiology, 29(2),130-135, 1991 | ||
| DOI | |||
| Key Words | Butachlor, Purple non-sulfur bacteria, Growth rate, Residue, Photosynthetic pigment | ||
| Abstract | The effect of as herbicide butachlor[2-chlor-2’,6’-diethyl-N-(butoxymethyl) acetanilide] on the growth of the purple non-sulfur bacteria were investigated. The butachlor inhibited the growth of all species tested by 18-51%, except Thodospirillum rubrum at concentration of 10^-3 M, which would be field capacity. The photosynthetic growth rate of the species in the presence of butachlor was influenced by the nitrogen source. Cultures supplied with (NH_4)_2SO_4 showed a somewhat higher growth rate than those fixing dinitrogen, but they were more susceptible to butachlor (26-51%). On the contray, butacholr enhanced the growth rate of Rhodospirillum rubrum in nitrogen gas conditions. When the culture was performed in medium with butachlor as the carbon source, the cells of fixing dinitrogen showed a higher exhaystion of butachlor than those supplemented with (NH_4)_2SO_4, while exhaystion was examined by a decrease of the major absorbance at 213nm and 260nm. The exhaustion of butachlor as the carbon source had relation with the growth of the cells. The alkalization of culture supplemented with nitrogen gas was found in the cells treated with butachlor or untreated. The butachlor affected the carotenoid region but bacteriochlorophyll remained unaffected. | ||
| Download PDF | Kor_290210_130-135p.pdf | ||