代谢组学分析显示大蒜在生长过程中的明显质量变化。,Journal of Agricult

代谢组学分析显示大蒜在生长过程中的明显质量变化。
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-05-08 , DOI: 10.1021/acs.jafc.0c01120
Pingxiang Liu 1 , Rui Weng 1 , Yanyang Xu 1 , Yecan Pan 1 , Beinan Wang 1 , Yongzhong Qian 1 , Jing Qiu 1

Affiliation  

Key Laboratory of Agri-food Quality and Safety, Ministry of Agriculture and Rural Affairs, Institute of Quality Standard and Testing Technology for Agro-Products, Chinese Academy of Agricultural Sciences, Beijing 100081, People's Republic of China.

大蒜特有的代谢产物有助于大蒜的辛辣风味和健康功能。它们的积累方式和调控机制在不同的环境和成熟度上差异很大。在这里，建立了代谢组学模型，以评估和预测两个地区六个生长阶段的四个大蒜品种的质量和化学组成变化。共鉴定出91种代谢物，其在山东三种大蒜品种的生长过程中的积累模式相似但与黑龙江种植的明显不同。观察到有机硫化合物和氨基酸的活性代谢，并且大多数具有“γ-谷氨酰基-”基团的代谢物是大蒜中氮和硫的储存化合物，因为它们在生长过程中显着增加。

Distinct Quality Changes of Garlic Bulb during Growth by Metabolomics Analysis.

Garlic-specialized metabolites contribute to both spicy flavor and healthy function of garlic. Their accumulation pattern and regulatory mechanism vary greatly at different environments and maturities. Herein, metabolomics models were built to evaluate and predict the quality and chemical composition variances of four garlic varieties in two regions at six growth stages. A total of 91 metabolites were identified, and their accumulation pattern during growth in three varieties of garlic in Shandong was similar but obviously distinct from that planted in Heilongjiang. Active metabolism for organosulfur compounds and amino acids was observed, and most metabolites with the "γ-glutamyl-" group were the storage compounds of nitrogen and sulfur in garlic because they increased remarkably during growth. The levels of functional components in garlic varied among different stages, and reliable prediction models for these compounds were provided, which may give a new idea for the estimation of garlic quality and confirmation of the best harvest time.