N-Acyl Homoserine Lactone Derived Tetramic Acids Impair Photosynthesis in Phaeodactylum tricornutum

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2019
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Syrpas, Michail
Graff van Creveld, Shiri
Backx, Simon
Blommaert, Lander
Stock, Willem
Mangelinckx, Sven
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ACS Chemical Biology. 2019, 14(2), pp. 198-203. ISSN 1554-8929. eISSN 1554-8937. Available under: doi: 10.1021/acschembio.8b01101
Zusammenfassung

Marine bacteria contribute substantially to nutrient cycling in the oceans and can engage in close interactions with microalgae. Many microalgae harbor characteristic satellite bacteria, many of which participate in N-acyl homoserine lactone (AHL) mediated quorum sensing. In the diffusion-controlled phycosphere, AHLs can reach high local concentrations, with some of them transforming into tetramic acids, compounds with a broad bioactivity. We tested a representative AHL, N-(3-oxododecanoyl) homoserine lactone, and its tetramic acid rearrangement product on the diatom Phaeodactylum tricornutum. While cell growth and photosynthetic efficiency of photosystem II were barely affected by the AHL, exposure to its tetramic acid rearrangement product had a negative effect on photosynthetic efficiency and led to growth inhibition and cell death in the long term, with a minimum inhibitory concentration between 20 and 50 μΜ. These results strengthen the view that AHLs may play an important role in shaping the outcome of microalgae-bacteria interactions.

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570 Biowissenschaften, Biologie
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ISO 690STOCK, Frederike, Michail SYRPAS, Shiri GRAFF VAN CREVELD, Simon BACKX, Lander BLOMMAERT, Lachlan DOW, Willem STOCK, Bernard LEPETIT, Peter G. KROTH, Sven MANGELINCKX, 2019. N-Acyl Homoserine Lactone Derived Tetramic Acids Impair Photosynthesis in Phaeodactylum tricornutum. In: ACS Chemical Biology. 2019, 14(2), pp. 198-203. ISSN 1554-8929. eISSN 1554-8937. Available under: doi: 10.1021/acschembio.8b01101
BibTex
@article{Stock2019-02-15NAcyl-45308,
  year={2019},
  doi={10.1021/acschembio.8b01101},
  title={N-Acyl Homoserine Lactone Derived Tetramic Acids Impair Photosynthesis in Phaeodactylum tricornutum},
  number={2},
  volume={14},
  issn={1554-8929},
  journal={ACS Chemical Biology},
  pages={198--203},
  author={Stock, Frederike and Syrpas, Michail and Graff van Creveld, Shiri and Backx, Simon and Blommaert, Lander and Dow, Lachlan and Stock, Willem and Lepetit, Bernard and Kroth, Peter G. and Mangelinckx, Sven}
}
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