Genetic improvement of <Emphasis Type="Italic">Magnetospirillum gryphiswaldense</Emphasis> for enhanced biological removal of phosphate期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Genetic improvement of Magnetospirillum gryphiswaldense for enhanced biological removal of phosphate

Authors:	Yanping Zhou author-information" >,Wiktor Lisowski,Yan Zhou,Ng Wun Jern,Kama Huang,Eileen Fong

Affiliation:	1.College of Electronics and Information Engineering,Sichuan University,Chengdu,China;2.Advanced Environmental Biotechnology Centre, Nanyang Environment and Water Research Institute,Nanyang Technological University,Singapore,Singapore;3.School of Materials Science and Engineering,Nanyang Technological University,Singapore,Singapore

Abstract:	Objectives To improve its phosphate accumulating abilities for phosphate recycling from wastewater, a magnetotactic bacterium, Magnetospirillum gryphiswaldense, was genetically modified to over-express polyphosphate kinase. Results Polyphosphate kinase was over-expressed in the bacterium. The recombinant strain accumulated ninefold more polyphosphate from synthetic wastewater compared to original wild type. The magnetic property of the recombinant M. gryphiswaldense strain was retained. Conclusions The recombinant M. gryphiswaldense can be used for phosphate removal and recovery in bioremediation.

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