在果发育过程中,脊柱葡萄 (Vitis davidii Foëx) 组织中,氨素成分,生物合成和组织化学的动态变化
Yinfang Yan1, Lin Li1, Mingyuan Zheng1
1College of Enology, Northwest A&F University, Yangling, People's Republic of China.
Journal of the science of food and agriculture
|November 20, 2024
概括
脊柱葡萄 (Vitis davidii) 在果发育过程中积累了益氨酸素 (PAs),其中表素占主导地位. 本研究绘制了PA分布和基因表达的地图,有助于未来的PA研究.
科学领域:
- 植物科学 植物科学
- 生物化学 生物化学
- 农业科学 农业科学
背景情况:
- 脊柱葡萄 (Vitis davidii Foëx) 是一种来自中国的野生品种,因其适应热潮湿气候而被种植.
- 它被认为是益阳氨酸 (PA) 的宝贵资源.
研究的目的:
- 在果发育过程中,分析脊柱葡萄的不同组织中氨酸胺 (PAs) 的组成,生物合成和组织化学.
- 了解PAs的空间和时间积累模式.
主要方法:
- 高性能液体色谱 (HPLC) 用于PA组成分析.
- 反转录-定量聚合酶链反应 (RT-qPCR) 来评估参与PA生物合成的关键结构基因的表达.
- 组织化学分析以确定PA在各种组织中积累的精确位置.
主要成果:
- 普兰托西亚尼丁的积累始于花期,结束于花期.
- 埃皮卡特被确定为主要的PA类型,皮肤显示了更高的PA聚合物的积累.
- 基因表达分析显示,结构基因的表达 (例如,黄-3'-基酶,二黄-4-减少酶) 和PA动态之间存在正相关性.
- 经组织化学验证的PA主要位于皮肤的外皮皮下皮层,种子中的头部外围膜中间层和茎中的花皮层.
结论:
- 这项研究为脊柱葡萄中PA的空间和时间分布提供了全面的见解.
- 建立了进一步研究PA结构特征,合成途径及其生物功能的基础.
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