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The Algicidal Characteristics of One Algae-Lysing FDT5 Bacterium on Microcystis aeruginosa

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Abstract:

One strain of algicidal bacterium which can inhibit Harmful algal blooms (HABs), FDT5, was isolated from activated sludge and found to have good algicidal effects on Microcystis aeruginosa. It was revealed that: The FDT5 was a Gram-negative bacterium and identified as Ochrobactrum sp.; The greater the initial bacterial cell density, the faster the degradation of chlorophyll a.; The algicidal efficiency was evaluated at the most favorable conditions which were a temperature of 30-35°C, a pH of 7.6 and complete darkness; The FDT5 strain lysed Microcystis aeruginosa not directly but by secreting metabolites which could withstand high temperatures and pressure.

Keywords: 16S rDNA; Algae-lysing characteristic; Algicidal bacteria; Ochrobactrum sp

Document Type: Research Article

DOI: http://dx.doi.org/10.1080/01490450903061622

Affiliations: 1: Department of Environmental Science and Engineering, Fudan University, Shanghai, China,School of Municipal and Environmental Engineering, Shandong Jianzhu University, Jinan, China 2: Department of Environmental Science and Engineering, Fudan University, Shanghai, China

Publication date: October 1, 2009

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