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Nitrite utilization by Chaetoceros muelleri under elevated CO2 concentration
Hu, Hanhua1; Zhang, Xu2; Hu, HH, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2008-06-01
Source PublicationWORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY
ISSN0959-3993
Volume24Issue:6Pages:891-894
AbstractChaetoceros muelleri (Lemn.) was cultured with nitrite (NO2-) or nitrate (NO3-) as the sole nitrogen source and aerated with air or with CO2-enriched air. Cells of C. muelleri excreted into the medium nitrite produced by reduction of nitrate when grown with 100 mu M NaNO3 as nitrogen source. Accordingly, NO2- concentration reached 10.4 mu M after 95 h at the low CO2 condition (aerated with air); while the maximum NO2- concentration was only around 2.0 mu M at the high CO2 condition (aerated with 5% CO2 in air), furthermore, after 30 h it decreased to no more than 1.0 mu M. NO2- was almost assimilated in 80 h when C. muelleri was cultured at the high CO2 condition with 100 mu M NaNO2 as sole nitrogen source. At the high CO2 condition, after 3 h the activity of nitrite reductase was as much as 50% higher than that at the low CO2 condition. It was indicated that enriched CO2 concentration could inhibit nitrite excretion and enhance nitrite assimilation by cells. Therefore, aeration with enriched CO2 might be an effective way to control nitrite content in aquaculture systems.; Chaetoceros muelleri (Lemn.) was cultured with nitrite (NO2-) or nitrate (NO3-) as the sole nitrogen source and aerated with air or with CO2-enriched air. Cells of C. muelleri excreted into the medium nitrite produced by reduction of nitrate when grown with 100 mu M NaNO3 as nitrogen source. Accordingly, NO2- concentration reached 10.4 mu M after 95 h at the low CO2 condition (aerated with air); while the maximum NO2- concentration was only around 2.0 mu M at the high CO2 condition (aerated with 5% CO2 in air), furthermore, after 30 h it decreased to no more than 1.0 mu M. NO2- was almost assimilated in 80 h when C. muelleri was cultured at the high CO2 condition with 100 mu M NaNO2 as sole nitrogen source. At the high CO2 condition, after 3 h the activity of nitrite reductase was as much as 50% higher than that at the low CO2 condition. It was indicated that enriched CO2 concentration could inhibit nitrite excretion and enhance nitrite assimilation by cells. Therefore, aeration with enriched CO2 might be an effective way to control nitrite content in aquaculture systems.
SubtypeArticle
KeywordAquaculture Chaetoceros Muelleri Co2 Nitrite Nitrite Reductase
Department[Hu, Hanhua] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Zhang, Xu] Beijing Univ Chem Technol, Coll Life Sci & Technol, Beijing 100029, Peoples R China
Subject AreaBiotechnology & Applied Microbiology
DOI10.1007/s11274-007-9553-x
WOS HeadingsScience & Technology ; Life Sciences & Biomedicine
Indexed BySCI
Language英语
WOS Research AreaBiotechnology & Applied Microbiology
WOS SubjectBiotechnology & Applied Microbiology
WOS IDWOS:000255259200021
WOS KeywordAIR-GROWN CELLS ; WATER-QUALITY ; SYNECHOCOCCUS UTEX-625 ; NITRATE ; CARBON ; ASSIMILATION ; REDUCTION ; EXPOSURE ; LIGHT
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Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8152
Collection期刊论文
Corresponding AuthorHu, HH, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
Affiliation1.Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Beijing Univ Chem Technol, Coll Life Sci & Technol, Beijing 100029, Peoples R China
Recommended Citation
GB/T 7714
Hu, Hanhua,Zhang, Xu,Hu, HH, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China. Nitrite utilization by Chaetoceros muelleri under elevated CO2 concentration[J]. WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY,2008,24(6):891-894.
APA Hu, Hanhua,Zhang, Xu,&Hu, HH, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China.(2008).Nitrite utilization by Chaetoceros muelleri under elevated CO2 concentration.WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY,24(6),891-894.
MLA Hu, Hanhua,et al."Nitrite utilization by Chaetoceros muelleri under elevated CO2 concentration".WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY 24.6(2008):891-894.
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