In this study, the biochemical response of to varying concentrations of inorganic selenium (Se) was investigated. It was observed that, when combined with fulvic acid, 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 , 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.

中文翻译：

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黄腐酸存在下海洋硅藻连续亚硒酸盐生物转化和生物燃料生产

在这项研究中，研究了不同浓度的无机硒 (Se) 的生化反应。据观察，当与黄腐酸结合时，可增强无机硒的吸收和生物转化，并增加微藻脂质生物合成。值得注意的是，当在黄腐酸处理下接受中等浓度（5 和 10 毫克/升）和高浓度（20 和 40 毫克/升）亚硒酸盐时，碳通量明显转向碳水化合物的脂肪生成和蛋白质生物合成。此外，基于微藻的生物燃料的关键参数符合生物燃料法规中概述的必要标准。此外，在黄腐酸的辅助下，Se 的去除能力与大量有机硒（特别是 SeCys）的积累相结合。这些发现为建立基于微藻的硒吸收和生物转化系统提供了一种可行且成功的方法。