Response of cellular stoichiometry and phosphorus storage of the cyanobacteria Aphanizomenon flos-aquae to small-scale turbulence

Zhe Li; Yan Xiao; Jixiang Yang; Chao Li; Xia Gao; Jinsong Guo

doi:10.1007/s00343-017-6178-2

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Response of cellular stoichiometry and phosphorus storage of the cyanobacteria Aphanizomenon flos-aquae to small-scale turbulence

Updated：2023-05-16

- Response of cellular stoichiometry and phosphorus storage of the cyanobacteria Aphanizomenon flos-aquae to small-scale turbulence
- Journal of Oceanology and Limnology Vol. 35, Issue 6, Pages: 1409-1416(2017)
- Affiliations：
  
  1. CAS Key Laboratory on Reservoir Water Environment Chongqing Institute of Green and Intelligent Technology Chinese Academy of Sciences
  2. State Key Laboratory of Bioreactor Engineering College of Biotechnology East China University of Science and Technology
- Author bio：
- Funds：
- DOI：10.1007/s00343-017-6178-2
  CLC：
- Online First：26 January 2017，
  
  Published：2017
- Accepted：
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Li, Z., Xiao, Y., Yang, J. et al. Response of cellular stoichiometry and phosphorus storage of the cyanobacteria Aphanizomenon flos-aquae to small-scale turbulence., Chin. J. Ocean. Limnol. 35, 1409–1416 (2017). https://doi.org/10.1007/s00343-017-6178-2
DOI：

Li, Z., Xiao, Y., Yang, J. et al. Response of cellular stoichiometry and phosphorus storage of the cyanobacteria Aphanizomenon flos-aquae to small-scale turbulence., Chin. J. Ocean. Limnol. 35, 1409–1416 (2017). https://doi.org/10.1007/s00343-017-6178-2 DOI：

摘要

Abstract

Turbulent mixing

in particular on a small scale

affects the growth of microalgae by changing diffusive sublayers and regulating nutrient fluxes of cells. We tested the nutrient flux hypothesis by evaluating the cellular stoichiometry and phosphorus storage of microalgae under different turbulent mixing conditions. Aphanizomenon flos-aquae were cultivated in different stirring batch reactors with turbulent dissipation rates ranging from 0.001 51 m2/s3 to 0.050 58 m2/s3

the latter being the highest range observed in natural aquatic systems. Samples were taken in the exponential growth phase and compared with samples taken when the reactor was completely stagnant. Results indicate that

within a certain range

turbulent mixing stimulates the growth of A. flos-aquae. An inhibitory effect on growth rate was observed at the higher range. Photosynthesis activity

in terms of maximum effective quantum yield of PSII (the ratio of Fv/Fm) and cellular chlorophyll a

did not change significantly in response to turbulence. However

Chl a/C mass ratio and C/N molar ratio

showed a unimodal response under a gradient of turbulent mixing

similar to growth rate. Moreover

we found that increases in turbulent mixing might stimulate respiration rates

which might lead to the use of polyphosphate for the synthesis of cellular constituents. More research is required to test and verify the hypothesis that turbulent mixing changes the diffusive sublayer

regulating the nutrient flux of cells.

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references

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