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Key Laboratory of Eutrophication and Red Tide Prevention of Guangdong Higher Education Institutes, College of Life Science and Technology, Jinan University, Guangzhou 510632, China. Electronic address:
Published: June 2024
AI Article Synopsis
The study focused on how Phaeodactylum tricornutum reacts to different levels of inorganic selenium, particularly when in combination with fulvic acid.
It found that this combination not only boosted the microalgae's uptake and processing of selenium but also led to increased lipid production.
Additionally, the research highlighted that this process redirected carbon usage towards lipids and proteins, meeting essential biofuel standards and demonstrating effective selenium removal and conversion into organic forms like SeCys.
Article Abstract
In this study, the biochemical response of Phaeodactylum tricornutum to varying concentrations of inorganic selenium (Se) was investigated. It was observed that, when combined with fulvic acid, P. tricornutum exhibited enhanced uptake and biotransformation of inorganic Se, as well as increased microalgal lipid biosynthesis. Notably, when subjected to moderate (5 and 10 mg/L) and high (20 and 40 mg/L) concentrations of selenite under fulvic acid treatment, there was a discernible redirection of carbon flux towards lipogenesis and protein biosynthesis from carbohydrates. In addition, the key parameters of microalgae-based biofuels aligned with the necessary criteria outlined in biofuel regulations. Furthermore, the Se removal capabilities of P. tricornutum, assisted by fulvic acid, were coupled with the accumulation of substantial amounts of organic Se, specifically SeCys. These findings present a viable and successful approach to establish a microalgae-based system for Se uptake and biotransformation.
