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The algae-lytic ability of bacterium DC_(10) and the influence of environmental factors on the ability

The algae-lytic ability of bacterium DC_(10) and the influence of environmental factors on the ability
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摘要 A lysing-bacterium DC10, isolated from Dianchi Lake of Yunnan Province, was characterized to be Pseudomonas sp. It was able to lyse some algae well, such as Microcystis viridis, Selenastrum capricornutum, and so on. In this study, it was shown that the bacterium lysed the algae by releasing a substance; the best lytic effects were achieved at low tempera- tures and in the dark. Different concentrations of CaCl2 and NaNO3 influenced the lytic effects; the ability to lyse algae decreased in the following order: pH 4 > pH 9 > pH 7 > pH 5.5. It was significant to develop a special technology with this kind of bacterium for controlling the bloom- forming planktonic microalgae. A lysing-bacterium DC10, isolated from Dianchi Lake of Yunnan Province, was characterized to be Pseudomonas sp. It was able to lyse some algae well, such as Microcystis viridis, Selenastrum capricornutum, and so on. In this study, it was shown that the bacterium lysed the algae by releasing a substance; the best lytic effects were achieved at low tempera- tures and in the dark. Different concentrations of CaCl2 and NaNO3 influenced the lytic effects; the ability to lyse algae decreased in the following order: pH 4 > pH 9 > pH 7 > pH 5.5. It was significant to develop a special technology with this kind of bacterium for controlling the bloom- forming planktonic microalgae.
出处 《Science China(Life Sciences)》 SCIE CAS 2005年第3期250-255,共6页 中国科学(生命科学英文版)
基金 This work was supported by the State 973 Project(2002CB412300 and 2003CB716801) the 863 Project(2002AA601021).
关键词 lysing-bacterium lyse algae control. lysing-bacterium, lyse, algae, control.
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参考文献3

  • 1K. K. Rashidan,D. F. Bird.Role of predatory bacteria in the termination of a cyanobacterial bloom[J].Microbial Ecology.2001(2)
  • 2Yoko Yamamoto,Takanori Kouchiwa,Yoshikuni Hodoki,Kunimoto Hotta,Hideaki Uchida,Ken-Ichi Harada.Distribution and identification of actinomycetes lysing cyanobacteria in a eutrophic lake[J].Journal of Applied Phycology.1998(4)
  • 3A. Dakhama,J. Noüe,M. C. Lavoie.Isolation and identification of antialgal substances produced byPseudomonas aeruginosa[J].Journal of Applied Phycology.1993(3)

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