Laminaria japonica hydrolysate promotes fucoxanthin accumulation in Phaeodactylum tricornutum.

Fucoxanthin (Fx) has gained a growing attention due to the remarkable biological activities. The limited biomass of was the restrictive factor for Fx production in Phaeodactylum tricornutum. In this study, Laminaria japonica hydrolysate (LPH) with a low addition proportion of 1.5 ml/L, was proved to promote fucoxanthin accumulation and cell growth simultaneously. Fx topped at 27.9 mg/L after 10-d cultivation in the LPH group, with a biomass of 1.59 g/L and a Fx content of 17.55 mg/g. Three key plant hormones in LPH were screened responsible for promoting fucoxanthin accumulation. Transcriptomic analysis and qRT-PCR results showed that genes related to Fx formation were generally up- regulated. The study demonstrated that LPH addition was a feasible and efficient strategy to enhance production of fucoxanthin, facilitating the scale-up production of Fx in autotrophic culture. Copyright © 2021. Published by Elsevier Ltd.

Citation

Zhi-Peng Wang, Pei-Kang Wang, Yan Ma, Jia-Xue Lin, Cheng-Long Wang, Yu-Xiang Zhao, Xin-Yue Zhang, Bei-Chen Huang, Shou-Geng Zhao, Lei Gao, Jing Jiang, Hai-Ying Wang, Wei Chen. Laminaria japonica hydrolysate promotes fucoxanthin accumulation in Phaeodactylum tricornutum. Bioresource technology. 2022 Jan;344(Pt A):126117

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PMID: 34653631

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