dc.contributor.author | Pandey, PK | |
dc.contributor.author | Singh, CB | |
dc.contributor.author | Singh, SP | |
dc.date.accessioned | 2013-06-25T05:56:07Z | |
dc.date.available | 2013-06-25T05:56:07Z | |
dc.date.issued | 1992 | |
dc.identifier.citation | Current Microbiology January 1992, Volume 24, Issue 1, pp 35-39 | en |
dc.identifier.issn | 1432-0991 | |
dc.identifier.uri | http://hdl.handle.net/11295/39311 | |
dc.description.abstract | Cu uptake in the diazotrophic cyanobacteriumNostoc calcicola Bréb. was accompanied by inhibitions in the in vivo activities of photosystem (PS) II, PS I,14CO2-fixation, and decline in the ATP pool. Cyanobacterial cells, while saturated for Cu uptake within 1 h at 40 μM Cu, showed more than 50% inhibition of PS II and 95.4% of14CO2 fixation compared with only 15.5% decrease in the PS I activity. The total extractable ATP content also declined by 32.2% within 1 h. In a subsequent follow-up study lasting 72 h, PS II activity and14CO2 fixation showed complete inhibition, in contrast to 34.4% of PS I activity and 4.2% of ATP still remaining unaffected. The results have been discussed in the light of multiple effects of Cu during and subsequent to its uptake by the cyanobacterium. | en |
dc.language.iso | en | en |
dc.publisher | Springer-Verlag | en |
dc.title | Cu uptake in a cyanobacterium: Fate of selected photochemical reactions | en |
dc.type | Article | en |
local.publisher | College of Biological Sciences, University of Nairobi | en |