通过引入酸转运蛋白来提高Phaeodactylum tricornutum中的酸利用率
Pu Song1, Ning Ma1, Shaokun Dong1
1School of Life Sciences, Ludong University, Yantai 264025, China.
Biomolecules
|July 27, 2024
概括
工程藻现在有效地使用乙酸盐来加速生长. 这种代谢工程方法增强了生物质生产,但改变了脂肪酸概况,影响了光合作用效率.
科学领域:
- 生物技术是生物技术.
- 海洋生物学 海洋生物学
- 代谢工程是代谢工程.
背景情况:
- 像 *Phaeodactylum tricornutum * 这样的藻类对脂质和脂肪酸有价值,但与外部有机物质作斗争.
- 增强营养同化是优化藻种植和产品产量的关键.
研究的目的:
- 通过引入外源性酸盐输送物来改善P. tricornutum中的酸盐利用率.
- 研究增强的酸盐同化对生长,光合作用和脂质生产的影响.
主要方法:
- 基因工程 *P. tricornutum* 与 *Saccharomyces cerevisiae* 的 *ADY2* 乙转运基因进行基因工程.
- 在不同度的酸下培育工程菌株和野生型菌株.
- 分析生长速度,色素含量,光合作用活性,粗脂含量和脂肪酸成分.
主要成果:
- 工程藻在0.01M酸下显示出1.7至2.0倍的增长率.
- 光合作用效率和最大电子传输速率在变压器中下降.
- 原脂含量增加,脂肪酸概况有显著的变化 (例如,C16:1n-7增加,EPA减少).
结论:
- 引入ADY2*基因成功增强了P. tricornutum*中的酸盐同化和生长.
- 乙酸的利用会影响光合作用过程,并改变脂质和脂肪酸的生物合成.
- 这些发现为代谢工程提供了一种战略,以优化藻生物质和生物活性产品的产生.
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