Synergistic and stepwise treatment of resveratrol and catechol in Haematococcus pluvialis for the overproduction of biomass and astaxanthin

To increase the production of biomass and astaxanthin from Haematococcus pluvialis to meet the high market demand for astaxanthin, this study recruited two typical and negligible phytohormones (namely resveratrol and catechol) for the stepwise treatments of H. pluvialis. It was found that the hybrid...

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Published in:Biotechnology for biofuels 2024-06, Vol.17 (1), p.80-14
Main Authors: Qiu, Jia-Fan, Yang, Yu-Cheng, Li, Ruo-Yu, Jiao, Yu-Hu, Mou, Jin-Hua, Yang, Wei-Dong, Lin, Carol Sze Ki, Li, Hong-Ye, Wang, Xiang
Format: Article
Language:English
Subjects:
Abiotic stress
Algae
Antioxidants
Astaxanthin
Biomass
Biorefineries
Biosynthesis
Calvin cycle
Catechin
Catechol
Gibberellins
Haematococcus pluvialis
Investigations
Metabolism
Metabolites
Physiological aspects
Phytohormones
Plant hormones
Resveratrol
Ribulose-bisphosphate carboxylase
Stepwise cultivation strategies
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Summary:To increase the production of biomass and astaxanthin from Haematococcus pluvialis to meet the high market demand for astaxanthin, this study recruited two typical and negligible phytohormones (namely resveratrol and catechol) for the stepwise treatments of H. pluvialis. It was found that the hybrid and sequential treatments of resveratrol (200 μmol) and catechol (100 μmol) had achieved the maximum astaxanthin content at 33.96 mg/L and 42.99 mg/L, respectively. Compared with the hybrid treatment, the physiological data of H. pluvialis using the sequential strategy revealed that the enhanced photosynthetic performance via the Calvin cycle by RuBisCO improved the biomass accumulation during the macrozooid stage; meanwhile, the excessive ROS production had occurred to enhance astaxanthin production with the help of NADPH overproduction during the hematocyst stage. Overall, this study provides improved knowledge of the impacts of phytohormones in improving biomass and astaxanthin of H. pluvialis, which shed valuable insights for advancing microalgae-based biorefinery.
ISSN:2731-3654
2731-3654
1754-6834
DOI:10.1186/s13068-024-02527-z