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- Light affects picocyanobacterial grazing and growth response of the mixotrophic flagellate Poterioochromonas malhamensis
- Thomas Weisse , Michael Moser
- J. Microbiol. 2020;58(4):268-278. Published online January 28, 2020
- DOI: https://doi.org/10.1007/s12275-020-9567-8
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- 4 Web of Science
- 4 Crossref
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Abstract
-
We measured the grazing and growth response of the mixotrophic
chrysomonad flagellate Poterioochromonas malhamensis
on four closely related picocyanobacterial strains isolated
from subalpine lakes in central Europe. The picocyanobacteria
represented different pigment types (phycoerythrin-
rich, PE, and phycocyanin-rich, PC) and phylogenetic
clusters. The grazing experiments were conducted with laboratory
cultures acclimated to 10 μmol photon/m2/sec (low
light, LL) and 100 μmol photon/m2/sec (moderate light, ML),
either in the dark or at four different irradiances ranging from
low (6 μmol photon/m2/sec) to high (1,500 μmol photon/m2/
sec) light intensity. Poterioochromonas malhamensis preferred
the larger, green PC-rich picocyanobacteria to the smaller,
red PE-rich picocyanobacterial, and heterotrophic bacteria.
The feeding and growth rates of P. malhamensis were sensitive
to the actual light conditions during the experiments;
the flagellate performed relatively better in the dark and at
LL conditions than at high light intensity. In summary, our
results
found strain-specific ingestion and growth rates of the flagellate; an effect of the preculturing conditions, and, unexpectedly, a direct adverse effect of high light levels. We conclude that this flagellate may avoid exposure to high surface light intensities commonly encountered in temperate lakes during the summer. -
Citations
Citations to this article as recorded by
- A systematic review of the predatory contaminant Poterioochromonas in microalgal culture
Mingyang Ma, Chaojun Wei, Wenjie Huang, Yue He, Yingchun Gong, Qiang Hu
Journal of Applied Phycology.2023; 35(3): 1103. CrossRef - Transcriptional profile reveals the physiological responses to prey availability in the mixotrophic chrysophyte Poterioochromonas malhamensis
Mingyang Ma, Wentao Yang, Hong Chen, Wanwan Ke, Yingchun Gong, Qiang Hu
Frontiers in Microbiology.2023;[Epub] CrossRef - Microbial consortia in an ice‐covered high‐altitude lake impacted by additions of dissolved organic carbon and nutrients
Flavia Dory, Laurent Cavalli, Evelyne Franquet, Magalie Claeys‐Bruno, Benjamin Misson, Thierry Tatoni, Céline Bertrand
Freshwater Biology.2021; 66(8): 1648. CrossRef - Picoplankton feeding by the ciliate Vorticella similis in comparison to other peritrichs emphasizes their significance in the water purification process
Thomas Weisse, Jitka Jezberova, Michael Moser
Ecological Indicators.2021; 121: 106992. CrossRef
- A systematic review of the predatory contaminant Poterioochromonas in microalgal culture
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