The reduction of tea quality caused by irrational phosphate application is associated with anthocyanin metabolism  

作　　者：Hua Zhang Chunlei Li Kailing Wei Meiya Liu Yuanzhi Shi Xiangde Yang Li Fang Jianyun Ruan Qunfeng Zhang 

机构地区：[1]Tea Research Institute,Chinese Academy of Agricultural Sciences,Hangzhou 310008,China [2]Shandong Provincial University Laboratory for Protected Horticulture,Weifang University of Science and Technology,Shouguang 262700,China [3]College of Horticulture Science and Engineering,Shandong Agriculture University,Taian 271018,China

出　　处：《Beverage Plant Research》2023年第1期86-92,共7页饮料植物研究（英文）

基　　金：supported by the National Key Research and Development Program of China(2021YFD1601105);the Chinese Academy of Agricultural Sciences through Agricultural Sciences Innovation Project(CAAS-ASTIP-2017-TRICAAS);China Agriculture Research System of MOF and MARA(CARS-19).

摘　　要：Phosphorus(P)is the second most limiting nutrient for plant growth.Previous studies suggested that P substantially affects the yield and quality of tea by affecting root growth,the decomposition and metabolism of minerals and metabolites in plants.Thus,the environmental pollution and degradation of crop quality caused by irrational fertilization is of increasing interest for researchers worldwide.To understand the effects of P fertilization on tea quality and metabolism of key quality components,three P fertilization levels(excessive,appropriate,and deficient application)were applied to tea plants using pot experiments.Content of P,potassium,polyphenols,amino acids and anthocyanins in the leaves or soil were quantified.The sensory quality of tea infusion was reduced under irrational(excessive or deficient)P fertilization.Under P deficiency,the total content of polyphenols and anthocyanins in the leaves were strongly increased compared with those of the control.A high soil P content(excessive)inhibited polyphenol accumulation,but induced the accumulation of certain anthocyanins,such as peonidin-3-Osambubioside-5-O-glucoside and peonidin-3-O-5-O-(6-O-p-coumaryl)-diglucoside.These results suggest that the reduction of tea quality caused by irrational P application is associated with anthocyanin metabolism,which provides a scientific basis for improving P fertilization strategies in tea plantations.

关 键 词：RATIONAL DEFICIENT POTASSIUM 

分 类 号：S571.1[农业科学—茶叶生产加工]