Skip Navigation



JPR Advance Access published online on March 30, 2004
Journal of Plankton Research, doi:10.1093/plankt/fbh071
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
26/7/727    most recent
fbh071v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrowRequest Permissions
Google Scholar
Right arrow Articles by Lyck, S.
Right arrow Search for Related Content
PubMed
Right arrow Articles by Lyck, S.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

Received March 13, 2003;
accepted March 15, 2004

Article

Simultaneous changes in cell quotas of microcystin, chlorophyll a, protein and carbohydrate during different growth phases of a batch culture experiment Microcystis aeruginosa

Susanne Lyck 1*

1 Freshwater Biological Laboratory, University of Copenhagen, Helsingørsgade 51, DK-3400 Hillerød, Denmark

* To whom correspondence should be addressed. E-mail: sanne_lyck{at}yahoo.dk.


  Abstract

The cell quotas of microcystin (Qmcyst), protein (Qprot), chlorophyll a (Qchloro) and carbohydrate (Qcarbo) as well as the net production rates of these parameters were determined during exponential and stationary phase in nine batch cultures of Microcystis aeruginosa (CYA 228) at light regimes from 33-53 µmol photons m-2 s-1. The results showed: (1) a parallel pattern in the changes of Qmcyst, Qprot, Qchloro and Qcarbo during the entire growth cycle and significant correlations between Qmcyst and Qprot, Qchloro, and Qcarbo. (2) the net microcystin production rate (µmcyst) was positively correlated to the specific cell division rate (µc), the chlorophyll production rate (µchloro) and to protein production rate. (3) A significant inverse linear relationship was found between µc and Qmcyst, i.e. cultures with a positive µc had a Qmcyst between 110 to 400 fg microcystin cell-1, while declining cultures had Qmcyst values above 400 fg microcystin cell-1. Maximum variation in Qmcyst within cultures was 3.5-fold. Collectively, the results show that cells produced microcystin at rates approximating those needed to replace losses to daughter cells during division and that microcystin was produced in a similar way to protein and chlorophyll indicating a constitutive microcystin production.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J PLANKTON RESHome page
C. B. Halstvedt, T. Rohrlack, R. Ptacnik, and B. Edvardsen
On the effect of abiotic environmental factors on production of bioactive oligopeptides in field populations of Planktothrix spp. (Cyanobacteria)
J. Plankton Res., May 1, 2008; 30(5): 607 - 617.
[Abstract] [Full Text] [PDF]


Disclaimer: Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.