D299T CYP76F14中的突变导致葡萄酒葡萄中葡萄酒花束前体产量减少.
Wanhao Liu1, Huilin Xiao1, Matthew Shi2,3
1Yantai Academy of Agricultural Sciences, Yantai 264000, China.
Genes
|November 27, 2024
概括
在葡萄酒中发现了VvCYP76F14基因的D299T变异,导致葡萄酒花束前体减少. 这种遗传变化影响了葡萄酒所需的香味特征的形成.
科学领域:
- 植物分子生物学 植物分子生物学
- 酶学 是一种酶学.
- 葡萄酒学 葡萄酒学
背景情况:
- 葡萄酒花束,一个关键的质量指标,在老化过程中发展.
- 细胞染色体P450 VvCYP76F14酶催化葡萄酒花束的前体.
- 葡萄酒花束质量与VvCYP76F14酶活性有关.
研究的目的:
- 调查VvCYP76F14在葡萄酒花束开发中的作用.
- 确定VvCYP76F14中的遗传变异及其对前体合成的影响.
- 了解葡萄树葡萄酒花束形成的分子基础.
主要方法:
- 从五种葡萄品种中克隆VvCYP76F14基因.
- 氨基酸序列对齐以评估VvCYP76F14变异.
- 在体外酶活性测定和短暂的过度表达系统来研究功能.
主要成果:
- 在特定的后代系中确定了VvCYP76F14中的D299T变异.
- 这种D299T突变与主要葡萄酒花束前体水平的降低相关.
- 突变的VvCYP76F14酶在体外活动下降,未能恢复突变系中的前体水平.
结论:
- 在VvCYP76F14中D299T变异显著降低了葡萄酒花束前体含量.
- 在葡萄酒中,VvCYP76F14在调节葡萄酒花束前体方面发挥着至关重要的作用.
- 在VvCYP76F14的遗传变异可以通过改变香味前体的合成影响葡萄酒的质量.
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