The luminous intensity of dark variant (S1) separated from photobacterium phosph oreum (A2) was 1/10 000 less than that of wild type. Ethidium bromide (EB) (0.6 mg/L), Mytomycin C (MC, 0.05 mg/L), 2 amino fluorene ...The luminous intensity of dark variant (S1) separated from photobacterium phosph oreum (A2) was 1/10 000 less than that of wild type. Ethidium bromide (EB) (0.6 mg/L), Mytomycin C (MC, 0.05 mg/L), 2 amino fluorene (2 AF, 1.0 mg/L) all cou ld strongly induce reversion mutation for S1 within 24 h and increase reversion ratio significantly. The results of experiments indicated that these revertants had stable genetic characteristic and the mutation may take place at gene levels . The mutagenesis to S1 caused by EB, MC and 2 AF was detected and it may be us ed as a new rapid, simple and sensitive method for gene toxicant monitoring.展开更多
Nowadays, the problem of air pollution is closely related to the development of society. The monitoring and control of air pollution requires the joint efforts of all sectors of society and the people. Therefore, in t...Nowadays, the problem of air pollution is closely related to the development of society. The monitoring and control of air pollution requires the joint efforts of all sectors of society and the people. Therefore, in the process of promoting air pollution control and prevention and control, the relevant ecological and environmental protection departments should actively monitor the atmospheric environment, share the monitoring results with more people, and issue bad weather warnings in a timely manner. It is necessary to take a multi-pronged approach to the governance of environmental protection, by raising peoples awareness of environmental protection, and encouraging the people and government functional departments to jointly improve the quality of the ecological environment, thereby laying a good ecological environment foundation for social development.展开更多
文摘The luminous intensity of dark variant (S1) separated from photobacterium phosph oreum (A2) was 1/10 000 less than that of wild type. Ethidium bromide (EB) (0.6 mg/L), Mytomycin C (MC, 0.05 mg/L), 2 amino fluorene (2 AF, 1.0 mg/L) all cou ld strongly induce reversion mutation for S1 within 24 h and increase reversion ratio significantly. The results of experiments indicated that these revertants had stable genetic characteristic and the mutation may take place at gene levels . The mutagenesis to S1 caused by EB, MC and 2 AF was detected and it may be us ed as a new rapid, simple and sensitive method for gene toxicant monitoring.
文摘Nowadays, the problem of air pollution is closely related to the development of society. The monitoring and control of air pollution requires the joint efforts of all sectors of society and the people. Therefore, in the process of promoting air pollution control and prevention and control, the relevant ecological and environmental protection departments should actively monitor the atmospheric environment, share the monitoring results with more people, and issue bad weather warnings in a timely manner. It is necessary to take a multi-pronged approach to the governance of environmental protection, by raising peoples awareness of environmental protection, and encouraging the people and government functional departments to jointly improve the quality of the ecological environment, thereby laying a good ecological environment foundation for social development.
