In this study, an efficient way by plasma induced mutation was applied to improve the hydroquinone degradation capacity of Serratia marcescens AB 90027 （SM27）. The results showed that combined with the selection of ...In this study, an efficient way by plasma induced mutation was applied to improve the hydroquinone degradation capacity of Serratia marcescens AB 90027 （SM27）. The results showed that combined with the selection of hydroquinone tolerance, the mutant with high hy- droquinone degradation ability induced by plasma could be achieved. The best dose for plasma mutation was 15 s, which showed a 47.0% higher positive mutation ratio. Besides, the aimed mutant was markedly different from the parent strain （SM27） in colonial traits while cultivated on Kings media. Finally, the hydroquinone degradation ratio reached 70.5~o using the induced mutant strain with 1500 mg/L hydroquinone （HQ） after 15 days of cultivation as the selective conditions; however, it was only 46.7% for SM27. The improvement of the degradation capacity by the induced mutant with a high concentration of HQ selection was attributed to its faster growth and higher hydroquinone tolerance compared with that of the parent strain.展开更多
文摘In this study, an efficient way by plasma induced mutation was applied to improve the hydroquinone degradation capacity of Serratia marcescens AB 90027 （SM27）. The results showed that combined with the selection of hydroquinone tolerance, the mutant with high hy- droquinone degradation ability induced by plasma could be achieved. The best dose for plasma mutation was 15 s, which showed a 47.0% higher positive mutation ratio. Besides, the aimed mutant was markedly different from the parent strain （SM27） in colonial traits while cultivated on Kings media. Finally, the hydroquinone degradation ratio reached 70.5~o using the induced mutant strain with 1500 mg/L hydroquinone （HQ） after 15 days of cultivation as the selective conditions; however, it was only 46.7% for SM27. The improvement of the degradation capacity by the induced mutant with a high concentration of HQ selection was attributed to its faster growth and higher hydroquinone tolerance compared with that of the parent strain.
