The effects of different nitrogen compounds on the growth and microcystin production of Microcystis aeruginosa (2009)

Research Article| June 01 2009 The effects of different nitrogen compounds on the growth and microcystin production of Microcystis aeruginosa Ruihua Dai; Ruihua Dai 1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China2Graduate School of Chinese Academy of Sciences, Beijing 100039, China Search for other works by this author on: This Site PubMed Google Scholar Huijuan Liu; Huijuan Liu 1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China Search for other works by this author on: This Site PubMed Google Scholar Jiuhui Qu Jiuhui Qu 1State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, PO Box 2871, Beijing 100085, China Tel.: +86 10 62849151 Fax: +86 10 62923558; E-mail: jhqu@rcees.ac.cn Search for other works by this author on: This Site PubMed Google Scholar Journal of Water Supply: Research and Technology-Aqua (2009) 58 (4): 277–284. https://doi.org/10.2166/aqua.2009.032 Article history Received: April 09 2008 Accepted: December 24 2008 Views Icon Views Article contents Figures & tables Video Audio Supplementary Data Share Icon Share Facebook Twitter LinkedIn Email Tools Icon Tools Cite Icon Cite Permissions Search Site Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll JournalsThis Journal Search Advanced Search Citation Ruihua Dai, Huijuan Liu, Jiuhui Qu; The effects of different nitrogen compounds on the growth and microcystin production of Microcystis aeruginosa. Journal of Water Supply: Research and Technology-Aqua 1 June 2009; 58 (4): 277–284. doi: https://doi.org/10.2166/aqua.2009.032 Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex The effects of different nitrogen compounds, which include bicine, sodium nitrate, ammonium chloride, glutamic acid and urea, on growth and microcystin (MC) production were studied in batch cultures. The results showed that growth and microcystin production were promoted by bicine, sodium nitrate and ammonium chloride and could not be supported by urea and glutamic acid. It is likely that the cells of Microcystis aeruginosa have no urease which can be utilized to decompose urea. Glutamic acid enters the cell and may interrupt the normal metabolic processes. This would inhibit growth and microcystin production, resulting in the death of the organism. Bicine kept the pH of the medium at about 8.5 and offered a preferential environment for growth and microcystin production. Ammonium chloride could be utilized by Microcystis aeruginosa indirectly. During the process of assimilation, hydroxy ions were continuously consumed, which would lead to a reduction in pH to less than 7 and retard growth and microcystin production. In the presence of sodium nitrate, the metabolic and biochemical mechanisms, which use sodium nitrate as a source of nutrition during the process of expanding vaccination, were impossible to change in a short time. Thus, sodium nitrate promoted growth and microcystin production. growth, microcystin production, Microcystis aeruginosa, nitrogen compounds This content is only available as a PDF. © IWA Publishing 2009 You do not currently have access to this content.