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Shi Qi, Mei Hong, Zhang Cheng-Jun, Huang Jian, Wu Hong-Yan. Phosphorus deficiency and high light treatment affect the photophysiology and lipid accumulation of Palmellococcus miniatus[J]. Plant Science Journal, 2017, 35(2): 291-298. DOI: 10.11913/PSJ.2095-0837.2017.20291
Citation: Shi Qi, Mei Hong, Zhang Cheng-Jun, Huang Jian, Wu Hong-Yan. Phosphorus deficiency and high light treatment affect the photophysiology and lipid accumulation of Palmellococcus miniatus[J]. Plant Science Journal, 2017, 35(2): 291-298. DOI: 10.11913/PSJ.2095-0837.2017.20291
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Phosphorus deficiency and high light treatment affect the photophysiology and lipid accumulation of Palmellococcus miniatus

  • Hubei Collaborative Innovation Center for Industrial Fermentation, Hubei University of Technology, Key Laboratory of Ecological Remediation for Lakes and Rivers and Algal Utilization of Hubei Province, Wuhan 430068, China

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This work was supported by grants from the National Natural Science Foundation of China (31270452), Key (Key grant) Project of the Chinese Ministry of Education (213026A), and Natural Science Foundation of Hubei Province (2014CFB607)

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  • Received Date: August 17, 2016
  • Revised Date: October 12, 2016
  • Available Online: October 31, 2022
  • Published Date: April 27, 2017
    Graphical Abstract
    • Abstract
  • Palmellococcus miniatus, a lipid-rich green microalgae, was selected as an experimental material. We exposed P. miniatus cultures to low (100 μmol·m-2·s-1) and high (600 μmol·m-2·s-1) light, and investigated the effect of phosphorus deficiency on the photophysiology and lipid accumulation in P. miniatus. Results showed that phosphorus deficiency decreased the photosystem Ⅱ maximum photochemical yield (Fv/Fm), inhibited the electron transfer from QA- to QB, and lowered the protein content, thus resulting in a reduction in growth and biomass. However, phosphorus deficiency induced a significant accumulation of lipids. When supplemented with high light, the photosynthesis of P. miniatus was further suppressed and protein content was markedly decreased, whereas lipid content increased significantly. Our results show that the combined treatments of phosphorus deficiency and high light stimulated lipid accumulation in P. miniatus.
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    • References (18)
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