Identification and distribution of a single nucleotide polymorphism responsible for the catechin content in tea plants
文献类型: 外文期刊
作者: Jiang, Chen-Kai 1 ; Ma, Jian-Qiang 1 ; Liu, Yu-Fei 1 ; Chen, Jie-Dan 1 ; Ni, De-Jiang 2 ; Chen, Liang 1 ;
作者机构: 1.Chinese Acad Agr Sci, Tea Res Inst, Key Lab Tea Biol & Resources Utilizat, Minist Agr & Rural Affairs, 9 South Meiling Rd, Hangzhou 310008, Zhejiang, Peoples R China
2.Huazhong Agr Univ, Coll Hort & Forestry Sci, 1 Shizishan St, Wuhan 430070, Hubei, Peoples R China
3.Yunnan Acad Agr Sci, Tea Res Inst, Menghai 666201, Yunnan, Peoples R China
期刊名称:HORTICULTURE RESEARCH ( 影响因子:6.793; 五年影响因子:6.589 )
ISSN: 2662-6810
年卷期: 2020 年 7 卷 1 期
页码:
收录情况: SCI
摘要: Catechins are the predominant products in tea plants and have essential functions for both plants and humans. Several genes encoding the enzymes regulating catechin biosynthesis have been identified, and the identification of single nucleotide polymorphisms (SNPs) resulting in nonsynonymous mutations within these genes can be used to establish a functional link to catechin content. Therefore, the transcriptomes of two parents and four filial offspring were sequenced using next-generation sequencing technology and aligned to the reference genome to enable SNP mining. Subsequently, 176 tea plant accessions were genotyped based on candidate SNPs using kompetitive allele-specific polymerase chain reaction (KASP). The catechin contents of these samples were characterized by high-performance liquid chromatography (HPLC), and analysis of variance (ANOVA) was subsequently performed to determine the relationship between genotypes and catechin content. As a result of these efforts, a SNP within the chalcone synthase (CHS) gene was shown to be functionally associated with catechin content. Furthermore, the geographical and interspecific distribution of this SNP was investigated. Collectively, these results will contribute to the early evaluation of tea plants and serve as a rapid tool for accelerating targeted efforts in tea breeding.
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