Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica)
Chinese Assam tea (Camellia sinensis var. assamica) is an important tea crop with a long history of cultivation in Yunnan, China. Despite its potential value as a genetic resource, its genetic diversity and domestication/breeding history remain unclear. To address this issue, we genotyped 469 ancien...
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KeAi Communications Co., Ltd.
2024-03-01
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| Series: | Plant Diversity |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468265923000811 |
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| author | Miao-Miao Li Muditha K. Meegahakumbura Moses C. Wambulwa Kevin S. Burgess Michael Möller Zong-Fang Shen De-Zhu Li Lian-Ming Gao |
| author_facet | Miao-Miao Li Muditha K. Meegahakumbura Moses C. Wambulwa Kevin S. Burgess Michael Möller Zong-Fang Shen De-Zhu Li Lian-Ming Gao |
| author_sort | Miao-Miao Li |
| collection | DOAJ |
| description | Chinese Assam tea (Camellia sinensis var. assamica) is an important tea crop with a long history of cultivation in Yunnan, China. Despite its potential value as a genetic resource, its genetic diversity and domestication/breeding history remain unclear. To address this issue, we genotyped 469 ancient tea plant trees representing 26 C. sinensis var. assamica populations, plus two of its wild relatives (six and three populations of C. taliensis and C. crassicolumna, respectively) using 16 nuclear microsatellite loci. Results showed that Chinese Assam tea has a relatively high, but comparatively lower gene diversity (HS = 0.638) than the wild relative C. crassicolumna (HS = 0.658). Clustering in STRUCTURE indicated that Chinese Assam tea and its two wild relatives formed distinct genetic groups, with considerable interspecific introgression. The Chinese Assam tea accessions clustered into three gene pools, corresponding well with their geographic distribution. However, NewHybrids analysis indicated that 68.48% of ancient Chinese Assam tea plants from Xishuangbanna were genetic intermediates between the Puer and Lincang gene pools. In addition, 10% of the ancient Chinese Assam tea individuals were found to be hybrids between Chinese Assam tea and C. taliensis. Our results suggest that Chinese Assam tea was domesticated separately in three gene pools (Puer, Lincang and Xishuangbanna) in the Mekong River valley and that the hybrids were subsequently selected during the domestication process. Although the domestication history of Chinese Assam tea in southwestern Yunnan remains complex, our results will help to identify valuable genetic resources that may be useful in future tea breeding programs. |
| first_indexed | 2024-04-24T17:28:01Z |
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| language | English |
| last_indexed | 2024-04-24T17:28:01Z |
| publishDate | 2024-03-01 |
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| series | Plant Diversity |
| spelling | doaj.art-442a9c0f8737442f9b3dd1698ea504832024-03-28T06:38:33ZengKeAi Communications Co., Ltd.Plant Diversity2468-26592024-03-01462229237Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica)Miao-Miao Li0Muditha K. Meegahakumbura1Moses C. Wambulwa2Kevin S. Burgess3Michael Möller4Zong-Fang Shen5De-Zhu Li6Lian-Ming Gao7CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650201, Yunnan, ChinaCAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650201, Yunnan, China; Department of Export Agriculture, Faculty of Animal Science and Export Agriculture, Uva Wellassa University, Badulla, 90000, Sri LankaCAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Germplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650201, Yunnan, China; Department of Life Sciences, School of Science and Computing, South Eastern Kenya University, 170-90200, Kitui, KenyaDepartment of Biology, Columbus State University, University System of Georgia, Columbus, GA, 31907-5645, USARoyal Botanic Garden Edinburgh, 20A Inverleith Row, Edinburgh, EH3 5LR, Scotland, UKCAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650201, Yunnan, ChinaGermplasm Bank of Wild Species, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650201, Yunnan, China; Lijiang Forest Biodiversity National Observation and Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, 674100, Yunnan, ChinaCAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China; Lijiang Forest Biodiversity National Observation and Research Station, Kunming Institute of Botany, Chinese Academy of Sciences, Lijiang, 674100, Yunnan, China; Corresponding author. CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Science, Kunming, 650201, China.Chinese Assam tea (Camellia sinensis var. assamica) is an important tea crop with a long history of cultivation in Yunnan, China. Despite its potential value as a genetic resource, its genetic diversity and domestication/breeding history remain unclear. To address this issue, we genotyped 469 ancient tea plant trees representing 26 C. sinensis var. assamica populations, plus two of its wild relatives (six and three populations of C. taliensis and C. crassicolumna, respectively) using 16 nuclear microsatellite loci. Results showed that Chinese Assam tea has a relatively high, but comparatively lower gene diversity (HS = 0.638) than the wild relative C. crassicolumna (HS = 0.658). Clustering in STRUCTURE indicated that Chinese Assam tea and its two wild relatives formed distinct genetic groups, with considerable interspecific introgression. The Chinese Assam tea accessions clustered into three gene pools, corresponding well with their geographic distribution. However, NewHybrids analysis indicated that 68.48% of ancient Chinese Assam tea plants from Xishuangbanna were genetic intermediates between the Puer and Lincang gene pools. In addition, 10% of the ancient Chinese Assam tea individuals were found to be hybrids between Chinese Assam tea and C. taliensis. Our results suggest that Chinese Assam tea was domesticated separately in three gene pools (Puer, Lincang and Xishuangbanna) in the Mekong River valley and that the hybrids were subsequently selected during the domestication process. Although the domestication history of Chinese Assam tea in southwestern Yunnan remains complex, our results will help to identify valuable genetic resources that may be useful in future tea breeding programs.http://www.sciencedirect.com/science/article/pii/S2468265923000811Tea plantHybrid originGenetic diversityDomestication historyCamellia sinensis var. assamicaCamellia taliensis |
| spellingShingle | Miao-Miao Li Muditha K. Meegahakumbura Moses C. Wambulwa Kevin S. Burgess Michael Möller Zong-Fang Shen De-Zhu Li Lian-Ming Gao Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica) Plant Diversity Tea plant Hybrid origin Genetic diversity Domestication history Camellia sinensis var. assamica Camellia taliensis |
| title | Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica) |
| title_full | Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica) |
| title_fullStr | Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica) |
| title_full_unstemmed | Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica) |
| title_short | Genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of Chinese Assam tea (Camellia sinensis var. assamica) |
| title_sort | genetic analyses of ancient tea trees provide insights into the breeding history and dissemination of chinese assam tea camellia sinensis var assamica |
| topic | Tea plant Hybrid origin Genetic diversity Domestication history Camellia sinensis var. assamica Camellia taliensis |
| url | http://www.sciencedirect.com/science/article/pii/S2468265923000811 |
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