11-Microbiology_Water_Mar12

51055112 0099 2240101200 doi101128aem00183 10

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Unformatted text preview: toring approaches. The detection and quantitation of specific target genes, such as those involved in the synthesis of toxins in cyanobacteria, are the cornerstone of new techniques to identify, monitor, or profile specific targets in environmental samples. These approaches are in general less expensive and faster than the currently available chemical assays and do not rely on reference standards. The structure of the microcystin biosynthesis cluster of two Toxic cyanobacterial blooms, as well as their increasing global occurrence, pose a serious threat to human health, domestic animals, and livestock. The frequency and severity of bloom events continue to rise, most probably as a direct result of increased nutrient loading of water systems worldwide. The number of lakes in Quebec, Canada, affected by blooms of 2 104 cells ml 1 or more has been increasing from 21 (2004) to 28 (2005), 62 (2006), 157 (2007), 138 (2008), and 150 (2009). Government agencies are under tremendous pressure to cope with escalating demands for water analysis, specific...
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