葡萄酒酵母中的甘油生产的光遗传修饰
Diego Ruiz1,2, Claudia Inzunza1,2, Javiera Barría1,2
1Laboratorio de Genómica Funcional, Instituto de Bioquímica y Microbiología, Facultad de Ciencias, Universidad Austral de Chile, Valdivia 5090000, Chile.
ACS synthetic biology
|February 14, 2025
概括
研究人员使用光激活光遗传学来控制葡萄酵母中的关键基因,改变乙醇和甘油的生产. 这表明了一种用于精确管理发酵副产品的新方法,以提高葡萄酒质量.
科学领域:
- 生物技术是生物技术.
- 发酵科学 发酵科学
- 合成生物学 合成生物学
背景情况:
- 葡萄酒酵母 (*Saccharomyces cerevisiae*) 的新陈代谢产生乙醇和甘油,影响葡萄酒的感官特性.
- 乙醇和甘油的生产主要由*ADH1*和*GPD1*基因分别调节.
- 修改这些基因为控制发酵途径和葡萄酒特征提供了一条途径.
研究的目的:
- 研究一种光遗传系统 (FUN-LOV) 的使用,用于对葡萄酒酵母中*ADH1*和*GPD1*基因表达的光控制调节.
- 评估光遗传控制对发酵期间代谢物 (乙醇,甘油) 生产的影响.
- 探索酵母发酵对葡萄酒生产的光依赖调节的可行性.
主要方法:
- 使用FUN-LOV光遗传系统控制*ADH1*和*GPD1*表达的工程葡萄酵母菌株.
- 使用RT-qPCR对*GPD1*进行验证的基因表达和对*ADH1*进行翻译记者.
- 在不同的光照条件下进行了生长曲线测试和实验室规模的发酵.
主要成果:
- 在工程酵母菌株中证实了 *ADH1* 和 *GPD1* 表达的光依赖调节.
- 对*GPD1*的光遗传控制在恒定光线下增加了糖的产量,但没有影响乙醇水平.
- 对*ADH1*的光遗传控制导致在持续的黑暗中增加糖的产生,显示出反转的表型.
结论:
- 光遗传工具,特别是FUN-LOV系统,可以有效地控制葡萄酒酵母中的基因表达.
- 依赖光的调节允许动态调节关键的代谢途径,影响糖醇和乙醇的生产.
- 这种方法为精确控制葡萄酒发酵和由此产生的代谢物平衡提供了一个新的策略.
更多相关视频
10:10Genetic Engineering of an Unconventional Yeast for Renewable Biofuel and Biochemical Production
Published on: September 20, 2016
13.6K
11:13Design and Implementation of an Automated Illuminating, Culturing, and Sampling System for Microbial Optogenetic Applications
Published on: February 19, 2017
9.6K
相关概念视频
01:20Fates of Pyruvate
8.3K
Pyruvate is the end product of glycolysis, where glucose is oxidized to pyruvate, simultaneously reducing NAD+ to NADH. Two molecules of ATP are also produced by substrate-level phosphorylation.
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
In aerobic organisms, pyruvate is metabolized via the citric acid cycle to produce reduced coenzymes NADH and FADH2. These coenzymes are then oxidized in the electron transport chain to produce ATP and, in the process, regenerate the NAD+ and FAD. As seen in some cell types and organisms, fermentation...
8.3K
01:29Fermentation
113.1K
Most eukaryotic organisms require oxygen to survive and function adequately. Such organisms produce large amounts of energy during aerobic respiration by metabolizing glucose and oxygen into carbon dioxide and water. However, most eukaryotes can generate some energy in the absence of oxygen by anaerobic metabolism.
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
Fermentation is a type of metabolic process that occurs in the absence of oxygen, where organic molecules such as glucose are broken down to produce energy. During this process, the...
113.1K