从体胚胎中射出新生器官的高效协议,用于葡萄藤的遗传转换
Luca Capriotti1, Angela Ricci1, Barbara Molesini2
1Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, Ancona, Italy.
Frontiers in plant science
|June 16, 2023
概括
这项研究引入了使用体胚胎扩展剂基因改造反抗性葡萄藤 (Vitis vinifera) 的新方法. 这些优化的协议提高了再生和转化效率,有助于未来的葡萄品种育种计划.
科学领域:
- 植物生物技术 植物生物技术
- 分子生物学分子生物学
- 农业科学 农业科学
背景情况:
- 植物遗传转换对于改善作物特征,如耐病性和水果质量至关重要.
- 葡萄藤品种往往对遗传修饰持反抗态度,阻碍了育种工作.
- 现有的协议经常依赖体质胚胎发生,需要持续的产.
研究的目的:
- 为了验证来自Vitis vinifera体质胚胎的皮质体和 hypocotyls作为体外再生和转化的扩展剂.
- 优化培养媒介,以提高反抗性葡萄品种的再生和遗传转换效率.
- 建立适用于更广泛的葡萄藤基因型的新方案.
主要方法:
- 来自Vitis vinifera品种 (Ancellotta,Lambrusco Salamino,Thompson Seedless) 的扩展体 (cotyledons, hypocotyls) 在两个MS基媒体 (M1: BAP+IBA,M2: BAP) 上进行培养.
- 评估了偶然芽的再生和转化效率 (eGFP表达式).
- 转基因线条被再生,适应和表型评估.
主要成果:
- 在这两种介质中,结节体表现出比低结节体更高的再生能力.
- 中等M2显著增加了普森无种子的芽生长再生.
- 安塞洛塔和兰布鲁斯科萨拉米诺在M2上显示出高变化;安塞洛塔产生了一个转基因芽,兰布鲁斯科萨拉米诺没有.
- 普森无种实现了高的转化效率 (高达14%从M2上的叶植物).
- 经过适应的转基因Vitis vinifera系保持了对类型的真实表型.
结论:
- 通过结合体质胚胎生成和机体生成的策略,采用叶和 hypocotyls 提供了一个高效的再生和转化途径,用于反复的葡萄树.
- 优化的协议为各种葡萄品种的基因工程提供了有价值的工具.
- 这种方法促进了现代生物技术在葡萄酒改进计划中的应用.
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