Analysis of the Genetic Diversity in Tea Plant Germplasm in Fujian Province Based on Restriction Site-Associated DNA Sequencing
文献类型： 外文期刊
作者： Jiang, Lele 1 ; Xie, Siyi 2 ; Zhou, Chengzhe 1 ; Tian, Caiyun 1 ; Zhu, Chen 4 ; You, Xiaomei 6 ; Chen, Changsong 6 ; Lai, Zhongxiong 1 ; Guo, Yuqiong 1 ;
作者机构： 1.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China
2.Hunan Agr Univ, Key Lab Tea Sci, Minist Educ, Changsha 410128, Peoples R China
3.Fujian Agr & Forestry Univ, Inst Hort Biotechnol, Fuzhou 350002, Peoples R China
4.Chinese Acad Sci, Guangdong Prov Key Lab Appl Bot, South China Bot Garden, 723 Xingke Rd, Guangzhou 510650, Peoples R China
5.Chinese Acad Sci, Key Lab South China Agr Plant Mol Anal & Genet Imp, South China Bot Garden, 723 Xingke Rd, Guangzhou 510650, Peoples R China
6.Fujian Acad Agr Sci, Tea Res Inst, 104 Pudang Rd, Fuzhou 350012, Peoples R China
7.Fujian Agr & Forestry Univ, Anxi Coll Tea Sci, Coll Digital Econ, Quanzhou 362400, Peoples R China
关键词： Camellia sinensis; genetic diversity; selection pressure; genome-wide association analysis
期刊名称：PLANTS-BASEL （ 影响因子：4.5； 五年影响因子：4.8 ）
ISSN： 2223-7747
年卷期： 2024 年 13 卷 1 期
页码：
收录情况： SCI
摘要： Fujian province, an important tea-producing area in China, has abundant tea cultivars. To investigate the genetic relationships of tea plant cultivars in Fujian province and the characteristics of the tea plant varieties, a total of 70 tea cultivars from Fujian and other 12 provinces in China were subjected to restriction site-associated DNA sequencing (RAD-seq). A total of 60,258,975 single nucleotide polymorphism (SNP) sites were obtained. These 70 tea plant cultivars were divided into three groups based on analyzing the phylogenetic tree, principal component, and population structure. Selection pressure analysis indicated that nucleotide diversity was high in Southern China and genetically distinct from cultivars of Fujian tea plant cultivars, according to selection pressure analysis. The selected genes have significant enrichment in pathways associated with metabolism, photosynthesis, and respiration. There were ten characteristic volatiles screened by gas chromatography-mass spectrometry (GC-MS) coupled with multivariate statistical methods, among which the differences in the contents of methyl salicylate, 3-carene, cis-3-hexen-1-ol, (E)-4-hexen-1-ol, and 3-methylbutyraldehyde can be used as reference indicators of the geographical distribution of tea plants. Furthermore, a metabolome genome-wide association study (mGWAS) revealed that 438 candidate genes were related to the aroma metabolic pathway. Further analysis showed that 31 genes of all the selected genes were screened and revealed the reasons for the genetic differences in aroma among tea plant cultivars in Fujian and Southern China. These results reveal the genetic diversity in the Fujian tea plants as well as a theoretical basis for the conservation, development, and utilization of the Fujian highly aromatic tea plant cultivars.
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