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Bioprocess and Biosystems Engineering

, Volume 41, Issue 5, pp 613–619 | Cite as

EMS-induced mutation followed by quizalofop-screening increased lipid productivity in Chlorella sp.

  • Orn-u-ma Tanadul
  • Wilawan Noochanong
  • Patiruj Jirakranwong
  • Sontichai Chanprame
Research Paper
  • 222 Downloads

Abstract

The objective of this study was to enhance biomass and lipid productivity in Chlorella sp. isolate 6-4 by inducing mutagenesis with two growth inhibitors: the herbicide quizalofop-P-ethyl, a known inhibitor of acetyl-CoA carboxylase (ACCase) activity, and chemical mutagen, ethyl methanesulfonate (EMS), at different concentrations and length of times. The induced-mutagenized microalgae were screened on selective medium containing 10–100 µM quizalofop. The biomass yield, biomass productivity, lipid content, and lipid productivity of mutagenized microalgae were determined. The result showed that 100–200 mM EMS concentrations and 30 min incubation time were the most effective. Biomass yield and biomass productivity of the mutagenized microalgae E50-30-40, E100-60-40, and E100-30-60 were statistically significant higher than those of the wild type. The mutagenized microalgae E100-30-60 showed that the highest biomass yield and biomass productivity were 111 and 110% higher than the wild type, respectively (p < 0.01). Lipid content and lipid productivity of the mutagenized microalgae E200-30-40 were 59 and 53% significantly higher than the wild type, respectively. It should be noted that biomass productivity of the mutagenized microalgae E200-30-40 was not significantly different from E100-30-60, meaning that this microalga strain exhibited highest both biomass and lipid productivity. These results indicated that inducing mutagenesis by EMS subsequently screening by herbicide could lead to enhance biomass and lipid accumulation. Therefore, this methodology could be used for improvement microalgae for biofuel production.

Keywords

Microalgal strain improvement Quizalofop Ethyl methanesulfonate Biomass and lipid productivity 

Notes

Acknowledgements

This work was funded by Kasetsart University Research and Development Institute and Research Fund from Department of Agronomy Faculty of Agriculture at Kamphaeng Saen campus. We wish to thank Assoc. Prof. Niran Juntawong Department of Botany for technical support, Asst. Prof. Chainarong Rattanakreetakul for freeze drying algal samples. We thank Center for Agricultural Biotechnology, Kasetsart University Kamphaeng Saen Campus for laboratory facilities. The authors wish to thank Associate Professor. Diane M Beckles for careful review of the manuscript.

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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Orn-u-ma Tanadul
    • 1
    • 2
    • 3
  • Wilawan Noochanong
    • 1
  • Patiruj Jirakranwong
    • 2
    • 3
  • Sontichai Chanprame
    • 1
    • 2
    • 3
  1. 1.Department of Agronomy, Faculty of Agriculture at Kamphaeng SaenKasetsart UniversityNakhon PathomThailand
  2. 2.Center for Agricultural BiotechnologyKasetsart UniversityNakhon PathomThailand
  3. 3.Center of Excellence on Agricultural Biotechnology: (AG-BIO/PERDO-CHE)BangkokThailand

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