开发含有胡卜素增强的番茄果实,采用多转基因堆叠策略
Peiyu Zhang1, Yifan Wang1, Guoning Zhu1
1College of Food Science and Nutritional Engineering, China Agricultural University, Beijing, 100083, PR China.
Plant physiology and biochemistry : PPB
|March 30, 2024
概括
生产含有胡卜素的生物丰富番茄对健康很重要. 过度表达特定的基因,特别是单独的SlorHis,显著提高了胡卜素水平,提高了营养价值和抗氧化能力.
科学领域:
- 植物生物技术 植物生物技术
- 营养基因组学 营养基因组学
- 农业科学 农业科学
背景情况:
- 胡卜素是水果中的重要颜料,提供健康益处并影响质量.
- 番茄是胡卜素的关键饮食来源,使胡卜素生物强化的品种非常可取.
- 胡卜素生物合成是一种复杂的途径,由多个基因和酶调节.
研究的目的:
- 开发使用多基因堆叠系统的胡卜素生物强化番茄.
- 研究过度表达特定的胡卜素代谢基因对胡卜素积累的影响.
- 评估对营养含量和抗氧化能力的影响.
主要方法:
- 组装的二进制结构具有四个内源性胡卜素代谢基因 (SlORHis,SlDXS,SlPSY,SlBHY).
- 使用高效的多转基因堆叠系统和特定于水果的促进剂.
- 生成过基因番茄系,过度表达单个或多个基因.
主要成果:
- 转基因线路显示不同程度的胡卜素丰富.
- 单独过度表达 SlORHis 的效果与同时过度表达 SlDXS,SlPSY 和 SlORHis 的效果一样高.
- 在含有SlBHY的线条中检测到紫丁和紫丁;糖含量和抗氧化能力增加.
结论:
- 多基因工程策略对于开发营养生物强化的番茄是有效的.
- SlORHis是增强胡卜素积累的关键目标.
- 该系统允许创建具有量身定制的胡卜素配置文件的西红,以改善营养.
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