Institute of Urban Agriculture, Chinese Academy of Agricultural Sciences, Chengdu National Agricultural Science and Technology Center, Chengdu 610213, China.
School of Agricultural Science, Zhengzhou University, Zhengzhou 450001, China.
Biomolecules. 2024 Sep 10;14(9):1144. doi: 10.3390/biom14091144.
Light quality has significant effects on the growth and metabolite accumulation of algal cells. However, the related mechanism has not been fully elucidated. This study reveals that both red and blue light can promote the growth and biomass accumulation of , with the enhancing effect of blue light being more pronounced. Cultivation under blue light reduced the content of total carbohydrate in , while increasing the content of protein and lipid. Conversely, red light decreased the content of protein and increased the content of carbohydrate and lipid. Blue light induces a shift in carbon flux from carbohydrate to protein, while red light transfers carbon flux from protein to lipid. Transcriptomic and metabolomic analysis indicated that both red and blue light positively regulate lipid synthesis in , but they exhibited distinct impacts on the fatty acid compositions. These findings suggest that manipulating light qualities can modulate carbon metabolic pathways, potentially converting protein into lipid in .
光质对藻类细胞的生长和代谢产物积累有显著影响，但相关机制尚未完全阐明。本研究表明，红光和蓝光均可促进 的生长和生物量积累，且蓝光的促进作用更为明显。蓝光培养降低了 的总碳水化合物含量，而提高了蛋白质和脂质含量。相反，红光降低了蛋白质含量，增加了碳水化合物和脂质含量。蓝光诱导碳通量从碳水化合物向蛋白质转移，而红光则将碳通量从蛋白质转移到脂质。转录组学和代谢组学分析表明，红光和蓝光均正向调控 的脂质合成，但它们对脂肪酸组成的影响明显不同。这些发现表明，调控光质可以调节碳代谢途径，可能将 中的蛋白质转化为脂质。
