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Broad allelopathic activity in Peridinium aciculiferum (Dinophyceae)

Rengefors, Karin LU and Legrand, Catherine (2007) In European Journal of Phycology 42(4). p.341-349
Abstract
The dinoflagellate Peridinium aciculiferum forms blooms underneath the ice in temperate lakes and has previously been shown to have an allelopathic effect on a natural competitor as well as being haemolytic. Hence, we investigated whether P. aciculiferum is allelopathic towards a wide range of different freshwater phytoplankton species. We also tested the hypothesis that nutrient (N and P) deficiency enhances its allelopathic effect. In addition, we explored how target cell density affected the extent of the allelopathic effect. Our findings showed that P. aciculiferum had a negative effect (mortality through lyses) on Synura petersenii (Chrysophyceae), Peridinium inconspicuum (Dinophyceae), Cyclotella sp. (Bacillariophyceae), Cryptomonas... (More)
The dinoflagellate Peridinium aciculiferum forms blooms underneath the ice in temperate lakes and has previously been shown to have an allelopathic effect on a natural competitor as well as being haemolytic. Hence, we investigated whether P. aciculiferum is allelopathic towards a wide range of different freshwater phytoplankton species. We also tested the hypothesis that nutrient (N and P) deficiency enhances its allelopathic effect. In addition, we explored how target cell density affected the extent of the allelopathic effect. Our findings showed that P. aciculiferum had a negative effect (mortality through lyses) on Synura petersenii (Chrysophyceae), Peridinium inconspicuum (Dinophyceae), Cyclotella sp. (Bacillariophyceae), Cryptomonas sp. and Rhodomonas lacustris (Cryptophyceae). Only Chlamydomonas reinhardtii (Chlorophyceae) cells were not negatively affected. In semi-continuously grown nutrient deficient cultures, we detected no allelopathic activity, in contrast to the findings for batch cultures. Finally, we found that, at donor-target cell ratios above 6:1, the algicidal effect of P. aciculiferum did not increase. We concluded that the allelopathic activity of P. aciculiferum has a wide span of action due to either a single chemical or a cocktail of allelochemicals, but that allelopathic activity is highly variable depending on growth conditions. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
nutrient deficiency, dinoflagellates, allelopathy, algicidal effect, alkaline phosphatase activity, Peridinium aciculiferum
in
European Journal of Phycology
volume
42
issue
4
pages
341 - 349
publisher
Taylor & Francis
external identifiers
  • scopus:39649102738
  • wos:000253299300002
ISSN
1469-4433
DOI
10.1080/09670260701529604
language
English
LU publication?
yes
id
6e868c23-dd10-420a-bd41-eada153c46a5 (old id 934250)
date added to LUP
2011-06-22 13:48:59
date last changed
2017-01-01 04:30:24
@article{6e868c23-dd10-420a-bd41-eada153c46a5,
  abstract     = {The dinoflagellate Peridinium aciculiferum forms blooms underneath the ice in temperate lakes and has previously been shown to have an allelopathic effect on a natural competitor as well as being haemolytic. Hence, we investigated whether P. aciculiferum is allelopathic towards a wide range of different freshwater phytoplankton species. We also tested the hypothesis that nutrient (N and P) deficiency enhances its allelopathic effect. In addition, we explored how target cell density affected the extent of the allelopathic effect. Our findings showed that P. aciculiferum had a negative effect (mortality through lyses) on Synura petersenii (Chrysophyceae), Peridinium inconspicuum (Dinophyceae), Cyclotella sp. (Bacillariophyceae), Cryptomonas sp. and Rhodomonas lacustris (Cryptophyceae). Only Chlamydomonas reinhardtii (Chlorophyceae) cells were not negatively affected. In semi-continuously grown nutrient deficient cultures, we detected no allelopathic activity, in contrast to the findings for batch cultures. Finally, we found that, at donor-target cell ratios above 6:1, the algicidal effect of P. aciculiferum did not increase. We concluded that the allelopathic activity of P. aciculiferum has a wide span of action due to either a single chemical or a cocktail of allelochemicals, but that allelopathic activity is highly variable depending on growth conditions.},
  author       = {Rengefors, Karin and Legrand, Catherine},
  issn         = {1469-4433},
  keyword      = {nutrient deficiency,dinoflagellates,allelopathy,algicidal effect,alkaline phosphatase activity,Peridinium aciculiferum},
  language     = {eng},
  number       = {4},
  pages        = {341--349},
  publisher    = {Taylor & Francis},
  series       = {European Journal of Phycology},
  title        = {Broad allelopathic activity in Peridinium aciculiferum (Dinophyceae)},
  url          = {http://dx.doi.org/10.1080/09670260701529604},
  volume       = {42},
  year         = {2007},
}