{"refrec":{"BRefID":69681,"RR":"<b>Neddermann, K.; Nausch, M.</b> (2004). Effects of organic and inorganic nitrogen compounds on the activity of bacterial alkaline phosphatase. <i>Aquat. Ecol. 38(4)</i>: 475-484. <a href=\"http://dx.doi.org/10.1007/s10452-004-5666-6\" target=\"_blank\">http://dx.doi.org/10.1007/s10452-004-5666-6</a>","BEntID":65752,"PublicFlag":1,"CheckedFlag":1,"wosflag":1,"vabbflag":null,"RefStringPartII":". <i>Aquat. Ecol. 38(4)</i>: 475-484. <a href=\"https://dx.doi.org/10.1007/s10452-004-5666-6\" target=\"_blank\">https://dx.doi.org/10.1007/s10452-004-5666-6</a>","DocTypID":8,"DocType":"Journal article","MarineFlag":1,"FreshFlag":0,"BrackishFlag":0,"TerrestrialFlag":0,"Authorstring":"Neddermann, K.; Nausch, M.","OrigTitleTranslFlag":0,"Authorstringtrunc":"Neddermann, K.; Nausch, M.","Englishabstract":"The stimulation of bacterial alkaline phosphatase activity (APA) by inorganic and organic nitrogen compounds was investigated in the southern Baltic Sea monthly between February and August 2001, by adding albumin, casein, leucine, ammonium, nitrate, ammonium + glucose or nitrate + glucose to 0.8 µm filtered seawater. The following questions were addressed: (1) Are there seasonal changes in the stimulation of APA by these substances?; (2) Does nitrogen alone stimulate this activity or only in combination with organic carbon?; (3) Is there a relationship between ambient nutrient concentrations and the degree of stimulation? The addition of the mentioned compounds stimulated the APA in bacteria to a high degree, however, there were seasonal variations. Stimulation was low in February and March but high from May to August when the stimulation, e.g., by ammonium + glucose, was up to 6000-fold higher compared with February. In most experiments, the addition of the amino acid leucine and of inorganic nitrogen alone resulted in an inhibition of the bacterial APA. A relationship between ambient nutrient concentrations and the stimulation of the bacterial APA was only observed for albumin, which correlated negatively with dissolved inorganic nitrogen (DIN) and phosphate concentrations and for casein, which correlated only with DIN. The results indicate that the regulation of bacterial APA and the DOP degradation can be significantly influenced by the availability of nitrogen and organic carbon.","AbstractOtherLang":null,"BibLvlCode":"AS","StandardTitle":"Effects of organic and inorganic nitrogen compounds on the activity of bacterial alkaline phosphatase","OrigTitleLangCode":"en","OrigTitleLangCodeExtended":"eng","OrigTitleLangID":15,"DateLastModified":{"date":"2024-12-10 01:33:17.368041","timezone_type":1,"timezone":"+01:00"},"UserAccessRight":null,"UserAccID":null,"AuthorKeywords":"alkaline phosphatase activity; Baltic sea; enzyme regulation; substratestimulation","OtherDescriptors":"Alkaline phosphatase activity; Baltic Sea; Enzyme regulation; Substrate stimulation","Notes":null,"AnaPub":2004,"MonPub":null,"DateUpdate":"2018-05-17","DateCreate":"2005-01-18","SecASFANote":null,"ConfID":null,"PeerRev":1,"VlizCoreFlag":1,"WoScode":"WOS:000226093700001","VABBcode":null,"OpenAcc":0,"DOI":"10.1007/s10452-004-5666-6"},"refs":null,"anarec":{"AnaID":69681,"PubliDate":2004,"Pagination":"475-484","XtraPublOfAnaID":null,"ISBN":null,"Volume":"38","Issue":"4","BRefMon":null,"BRefMonRR":null,"BRefXtra":null,"BRefXtraRR":null,"SerBRefID":42197,"SerRR":"Aquatic Ecology. Springer: Dordrecht; London; Boston.  ISSN 1386-2588; e-ISSN 1573-5125","StandardTitleSer":"Aquatic Ecology","ISSN":"1386-2588","AbbrevSer":"Aquat. 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