Research articles
ScienceAsia 51 (2025):ID 2025056 1-10 |doi:
10.2306/scienceasia1513-1874.2025.056
Non-motile cell development and astaxanthin accumulation in
Haematococcus pluvialis under different light spectra
Guowei Zhanga, Feng Lib, Jiansen Luoa, Yong Qina, Zhenhuan Hec, Fengyuan Dinga, Yuanyuan Zengd,*
ABSTRACT: Light plays a crucial role in influencing the growth of Haematococcus pluvialis and its production of
astaxanthin. Previous studies have shown that non-motile cells of H. pluvialis exhibit higher light tolerance compared
to motile cells, and cultivating non-motile cells as the predominant cell type in the red stage can significantly enhance
overall astaxanthin productivity. However, despite some progress has been made in inducing the formation of non
motile cells through high light intensity, the specific light spectra responsible for inducing both non-motile cells
formation and astaxanthin accumulation remain largely unknown. In this study, we explored the impact of three
different light spectra on the formation of non-motile cells, cellular morphology, pigment composition, and chlorophyll
a fluorescence parameters in the green stage of H. pluvialis. Additionally, we assessed the astaxanthin accumulation,
dry weight, mortality rate, and cyst diameter during the induction period. The results indicate that light spectra had
a significant impact on the growth and development as well as physiological processes of H. pluvialis cells. Compared
to red and white light, blue light proves more conducive to promoting non-motile cells formation and enhancing
astaxanthin accumulation. The findings make a significant contribution to the development of optimized method for
cultivating H. pluvialis and enhancing astaxanthin productivity in factory settings.
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| a |
Gansu Province Fishery Technology Promotion Station, Lanzhou 730000 China |
| b |
College of Fisheries, Guangdong Ocean University, Zhanjiang 524088 China |
| c |
Shenzhen Institute of Technology, Shenzhen 518000 China |
| d |
State Key Laboratory of Grassland Agro-Ecosystems, College of Ecology, Lanzhou University, Lanzhou 730000 China |
* Corresponding author, E-mail: zengyy15@lzu.edu.cn
Received 11 Sep 2024, Accepted 0 0000
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