Purine alkaloids in tea plants:component,biosynthetic mechanism and genetic variation  

作　　者：Shuran Zhang Jiqiang Jin Jiedan Chen Sezai Ercisli Liang Chen 

机构地区：[1]Key Laboratory of Biology,Genetics and Breeding of Special Economic Animals and Plants,Ministry of Agriculture and Rural Affairs,Tea Research Institute,Chinese Academy of Agricultural Sciences,Hangzhou 310008,China [2]Department of Horticulture,Faculty of Agriculture,Ataturk University,Erzurum 25240,Turke

出　　处：《Beverage Plant Research》2022年第1期94-102,共9页饮料植物研究（英文）

基　　金：the National Natural Science Foundation of China(U19A200592&32072631);the Chinese Academy of Agricultural Sciences through the Agricultural Science and Technology Innovation Program(CAASASTIP-2017-TRICAAS);Earmarked Fund for China Agriculture Research System of MOF and MARA(CARS-19)to L Chen.

摘　　要：The purine alkaloids,including caffeine,theobromine,and theacrine,are one of the most important quality and functional components of tea plants and commercial teas.In this paper,we review the component,biosynthetic mechanism and genetic variation of purine alkaloids in tea plants.The content of caffeine and theobromine in 403 accessions Chinese tea germplasms core collection preserved in the National Germplasm Hangzhou Tea Repository were analyzed using High Performance Liquid Chromatography(HPLC).The purine alkaloid profiles of different tea varieties,germplasm types,geographical origin,seasons,were highlighted.Some naturally low caffeine or caffeine-free,high theobromine or high theacrine germplasms were identified and the possible biosynthetic mechanism of hypernormal purine alkaloid content in tea plants were partially revealed.Some Cleaved Amplified Polymorphic Sequences(CAPS)DNA markers were developed for the identification of purine alkaloid content.The potential application of genetic engineering and DNA markers developed based on the low caffeine TCS1(tea caffeine synthesis gene)alleles for marker assisted selection(MAS),and cocoa tea and kucha in low caffeine/high theacrine tea cultivar breeding programs were also reviewed.

关 键 词：MECHANISM COMPONENT URINE 

分 类 号：S571.1[农业科学—茶叶生产加工]