title: [Decontamination of heavy metals in wastewater by transgenic Synechococcus sp. PCC 7002 with mouse metallothionein-I gene].
abstract: The growth characteristics and the decontamination of heavy metals in analogous heavy metals wastewater by transgenic Synechococcus sp. PCC 7002 with mouse metallothionein-I gene were studied. The results show that transgenic Synechococcus sp. PCC 7002 not only has a higher tolerance to heavy metals, but also has a higher growth rate than wild strain. The concentration of Cd2+, Pb2+ and Hg2+ decreases with the progress of cultivation, and its maximum decreasing extent occurs at 1 - 3 day. After three days of cultivation, the absorption of Cd2+, Pb2+ and Hg2+ by transgenic Synechococcus sp. PCC 7002 is 10.75, 58.89 and 112.61 mg g(-1) of dried cells respectively, which is 3.16, 2.18 and 100.45 times higher than wild cells. The mono-factor and overall model developed fit the experiment data well.
authors.affiliation: Tianjin Key Laboratory of Environmental Remediation and Pollution Control, College of Environmental Science and Engineering, Nankai University, Tianjin 300071, China. zengwl2007@hotmail.com
authors.forename: Wen-Lu
authors.initials: WL
authors.lastname: Zeng
authors.forename: Fei-Fei
authors.initials: FF
authors.lastname: Zhao
authors.forename: Zhao-Gen
authors.initials: ZG
authors.lastname: Cao
authors.forename: Bing-Gen
authors.initials: BG
authors.lastname: Ru
mesh_terms: D000222:Adaptation, Physiological / Q000187:drug effects / Q000235:genetics / Q000502:physiology; D000818:Animals; D001673:Biodegradation, Environmental; D008668:Metallothionein / Q000235:genetics / Q000502:physiology*; D019216:Metals, Heavy / Q000378:metabolism* / Q000494:pharmacology; D051379:Mice; D008822:Mice, Transgenic; D008962:Models, Theoretical; D046940:Synechococcus / Q000235:genetics / Q000254:growth & development / Q000378:metabolism*; D014865:Waste Disposal, Fluid / Q000379:methods*
chemical_list: D019216:Metals, Heavy; D008668:Metallothionein