Mitigation of oxidative stress damage caused by abiotic stress to improve biomass yield of microalgae: A review

Zhu J 1 , Cai Y 2 , Wakisaka M 3 , Yang Z 2 , Yin Y 2 , Fang W 2 Show all authors , Xu Y 2 , Omura T 4 , Yu R 5 , Zheng ALT 6

Affiliations 

  • 1 School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China; Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Fukuoka 808-0196, Japan. Electronic address: zhu.jiangyu272@mail.kyutech.jp
  • 2 School of Food Science and Engineering, Yangzhou University, No. 196 Huayang West Road, Hanjiang District, Yangzhou 225127, China
  • 3 Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Fukuoka 808-0196, Japan; Food Study Centre, Fukuoka Women's University, 1-1-1 Kasumigaoka, Fukuoka 813-8529, Japan. Electronic address: wakisaka@fwu.ac.jp
  • 4 Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-8657, Japan
  • 5 School of International Trade, Anhui University of Finance and Economics, Bengbu 233030, China
  • 6 Faculty of Humanities, Management and Science, Universiti Putra Malaysia Bintulu Campus, Bintulu, Sarawak 97008, Malaysia
Sci Total Environ, 2023 Oct 20;896:165200.
PMID: 37400020 DOI: 10.1016/j.scitotenv.2023.165200

Abstract

Microalgae have been recognized as emerging cell factories due to the high value-added bio-products. However, the balance between algal growth and the accumulation of metabolites is always the main contradiction in algal biomass production. Hence, the security and effectiveness of regulating microalgal growth and metabolism simultaneously have drawn substantial attention. Since the correspondence between microalgal growth and reactive oxygen species (ROS) level has been confirmed, improving its growth under oxidative stress and promoting biomass accumulation under non-oxidative stress by exogenous mitigators is feasible. This paper first introduced ROS generation in microalgae and described the effects of different abiotic stresses on the physiological and biochemical status of microalgae from these aspects associated with growth, cell morphology and structure, and antioxidant system. Secondly, the role of exogenous mitigators with different mechanisms in alleviating abiotic stress was concluded. Finally, the possibility of exogenous antioxidants regulating microalgal growth and improving the accumulation of specific products under non-stress conditions was discussed.

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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