1
|
Wang F, Zhang B, Wen D, Liu R, Yao X, Chen Z, Mu R, Pei H, Liu M, Song B, Lu L. Chromosome-scale genome assembly of Camellia sinensis combined with multi-omics provides insights into its responses to infestation with green leafhoppers. FRONTIERS IN PLANT SCIENCE 2022; 13:1004387. [PMID: 36212364 PMCID: PMC9539759 DOI: 10.3389/fpls.2022.1004387] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Accepted: 08/25/2022] [Indexed: 06/16/2023]
Abstract
The tea plant (Camellia sinensis) is an important economic crop, which is becoming increasingly popular worldwide, and is now planted in more than 50 countries. Tea green leafhopper is one of the major pests in tea plantations, which can significantly reduce the yield and quality of tea during the growth of plant. In this study, we report a genome assembly for DuyunMaojian tea plants using a combination of Oxford Nanopore Technology PromethION™ with high-throughput chromosome conformation capture technology and used multi-omics to study how the tea plant responds to infestation with tea green leafhoppers. The final genome was 3.08 Gb. A total of 2.97 Gb of the genome was mapped to 15 pseudo-chromosomes, and 2.79 Gb of them could confirm the order and direction. The contig N50, scaffold N50 and GC content were 723.7 kb, 207.72 Mb and 38.54%, respectively. There were 2.67 Gb (86.77%) repetitive sequences, 34,896 protein-coding genes, 104 miRNAs, 261 rRNA, 669 tRNA, and 6,502 pseudogenes. A comparative genomics analysis showed that DuyunMaojian was the most closely related to Shuchazao and Yunkang 10, followed by DASZ and tea-oil tree. The multi-omics results indicated that phenylpropanoid biosynthesis, α-linolenic acid metabolism, flavonoid biosynthesis and 50 differentially expressed genes, particularly peroxidase, played important roles in response to infestation with tea green leafhoppers (Empoasca vitis Göthe). This study on the tea tree is highly significant for its role in illustrating the evolution of its genome and discovering how the tea plant responds to infestation with tea green leafhoppers will contribute to a theoretical foundation to breed tea plants resistant to insects that will ultimately result in an increase in the yield and quality of tea.
Collapse
Affiliation(s)
- Fen Wang
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guiyang, China
| | - Baohui Zhang
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guiyang, China
- Horticulture Institute (Guizhou Horticultural Engineering Technology Research Center), Guizhou Academy of Agricultural Sciences, Guiyang, China
| | - Di Wen
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
| | - Rong Liu
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
| | - Xinzhuan Yao
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guiyang, China
- College of Tea Science, Guizhou University, Guiyang, China
| | - Zhi Chen
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
| | - Ren Mu
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
| | - Huimin Pei
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
| | - Min Liu
- Biomarker Technologies Corporation, Beijing, China
| | - Baoxing Song
- The Department of Life Science and Agriculture, Qiannan Normal College for Nationalities, Duyun, China
- Peking University Institute of Advanced Agricultural Sciences, Weifang, China
| | - Litang Lu
- The Key Laboratory of Plant Resources Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Guiyang, China
- College of Tea Science, Guizhou University, Guiyang, China
| |
Collapse
|