Show simple item record

dc.contributor.authorWafar, M.V.M.
dc.contributor.authorWafar, S.
dc.contributor.authorRajkumar, R.
dc.date.accessioned2009-05-06T10:30:04Z
dc.date.available2009-05-06T10:30:04Z
dc.date.issued1993
dc.identifier.citationIndian Journal of Marine Sciences, Vol.22(2); 83-88p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/2786
dc.description.abstractZooxanthellae freshly isolated from the coral host Pocillopora damicornis exhibited substrate-saturable uptake kinetics for ammonium, nitrate and urea. Maximum uptake velocity for ammonium [10.1 nmol. ( mu chl-a)./1h/1] was greater than that for nitrate [2.8 nmol. ( mu chl-a)./1h/1] and urea [0.37 nmol. ( mu chl-a)./1h/1]. Half-saturation constants for uptake of the three nitrogen compounds were in the range of 10-15 mu mol.l/1. Generally, uptake of any one nitrogen substrate appears to be inhibitEd. by the other 2 substrates when the latter are present in higher concentrations. The observed interactions can be explainEd. by the uncompetitive model. These results are interpreted as indicative of a simultaneous uptake of all 3 nitrogen compounds by the zooxanthellae
dc.language.isoen
dc.publisherNISCAIR, New Delhi
dc.rightsCopyright [1993]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectcoral
dc.subjectzooxanthellae
dc.subjectnitrogen fixation
dc.subjectnitrates
dc.subjectammonia
dc.subjecturea
dc.subjectPocillopora damicornis
dc.titleNitrogen uptake kinetics of freshly isolated zooxanthellae
dc.typeJournal Article


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record