Dwivedi, Alka ; Kumar, H. D. ; Verma, S. K. ; Singh, H. N. (1992) pH Regulation of growth, photosynthesis, glutamine synthetase activity and micronutrient transport in the cyanobacterium Hapalosiphon welwitschii FEMS Microbiology Letters, 98 (1-3). pp. 241-244. ISSN 0014-5793
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Official URL: http://www.sciencedirect.com/science/article/pii/0...
Abstract
Optima for growth, oxygenic photosynthesis and glutamine synthetase activity occurred at pH 10, thus suggesting that the cyanobacterium Hapalosiphon welwitschii is an alkalophile. It produced a Cu-Zn efflux system at pH 9 or 10, but not at pH 7 or 8, to relieve photosynthesis from Cu or Zn inhibition. This finding has a bearing on the ecophysiological competence of the cyanobacterium under natural conditions.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Cyanobacterium; pH Regulation; Glutamine Synthetase Activity; Hapalosiphon welwitschii; Oxygenic Photosynthesis; Copper-zinc Efflux |
| ID Code: | 90457 |
| Deposited On: | 10 May 2012 03:59 |
| Last Modified: | 10 May 2012 03:59 |
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