New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq)
Saussurea is one of the largest and most rapidly evolving genera within the Asteraceae, comprising approximately 520 species from the Northern Hemisphere. A comprehensive infrageneric classification, supported by robust phylogenetic trees and corroborated by morphological and other data, has not yet...
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Plant Diversity |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2468265924001689 |
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| author | Liansheng Xu Zhuqiu Song Tian Li Zichao Jin Buyun Zhang Siyi Du Shuyuan Liao Xingjie Zhong Yousheng Chen |
| author_facet | Liansheng Xu Zhuqiu Song Tian Li Zichao Jin Buyun Zhang Siyi Du Shuyuan Liao Xingjie Zhong Yousheng Chen |
| author_sort | Liansheng Xu |
| collection | DOAJ |
| description | Saussurea is one of the largest and most rapidly evolving genera within the Asteraceae, comprising approximately 520 species from the Northern Hemisphere. A comprehensive infrageneric classification, supported by robust phylogenetic trees and corroborated by morphological and other data, has not yet been published. For the first time, we recovered a well-resolved nuclear phylogeny of Saussurea consisting of four main clades, which was also supported by morphological data. Our analyses show that ancient hybridization is the most likely source of deep cytoplasmic-nuclear conflict in Saussurea, and a phylogeny based on nuclear data is more suitable than one based on chloroplast data for exploring the infrageneric classification of Saussurea. Based on the nuclear phylogeny obtained and morphological characters, we proposed a revised infrageneric taxonomy of Saussurea, which includes four subgenera and 13 sections. Specifically, 1) S. sect. Cincta, S. sect. Gymnocline, S. sect. Lagurostemon, and S. sect. Strictae were moved from S. subg. Saussurea to S. subg. Amphilaena, 2) S. sect. Pseudoeriocoryne was moved from S. subg. Eriocoryne to S. subg. Amphilaena, and 3) S. sect. Laguranthera was moved from S. subg. Saussurea to S. subg. Theodorea. |
| format | Article |
| id | doaj-art-75943324affd4b64a5d0c84399059ecb |
| institution | Kabale University |
| issn | 2468-2659 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Plant Diversity |
| spelling | doaj-art-75943324affd4b64a5d0c84399059ecb2025-02-12T05:31:34ZengKeAi Communications Co., Ltd.Plant Diversity2468-26592025-01-014712133New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq)Liansheng Xu0Zhuqiu Song1Tian Li2Zichao Jin3Buyun Zhang4Siyi Du5Shuyuan Liao6Xingjie Zhong7Yousheng Chen8Plant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, Guangzhou 510650, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, Guangzhou 510650, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Central-Southern Safety and Environment Technology Institute Co., LTD, Wuhan 430064, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of the Chinese Academy of Sciences, Beijing 100049, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of the Chinese Academy of Sciences, Beijing 100049, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; University of the Chinese Academy of Sciences, Beijing 100049, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, ChinaPlant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China; Key Laboratory of National Forestry and Grassland Administration on Plant Conservation and Utilization in Southern China, Guangzhou 510650, China; Corresponding author. Plant Science Research Center, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China.Saussurea is one of the largest and most rapidly evolving genera within the Asteraceae, comprising approximately 520 species from the Northern Hemisphere. A comprehensive infrageneric classification, supported by robust phylogenetic trees and corroborated by morphological and other data, has not yet been published. For the first time, we recovered a well-resolved nuclear phylogeny of Saussurea consisting of four main clades, which was also supported by morphological data. Our analyses show that ancient hybridization is the most likely source of deep cytoplasmic-nuclear conflict in Saussurea, and a phylogeny based on nuclear data is more suitable than one based on chloroplast data for exploring the infrageneric classification of Saussurea. Based on the nuclear phylogeny obtained and morphological characters, we proposed a revised infrageneric taxonomy of Saussurea, which includes four subgenera and 13 sections. Specifically, 1) S. sect. Cincta, S. sect. Gymnocline, S. sect. Lagurostemon, and S. sect. Strictae were moved from S. subg. Saussurea to S. subg. Amphilaena, 2) S. sect. Pseudoeriocoryne was moved from S. subg. Eriocoryne to S. subg. Amphilaena, and 3) S. sect. Laguranthera was moved from S. subg. Saussurea to S. subg. Theodorea.http://www.sciencedirect.com/science/article/pii/S2468265924001689AsteraceaeMorphologyNext-generation sequencingPhylogenomicsSubgenus |
| spellingShingle | Liansheng Xu Zhuqiu Song Tian Li Zichao Jin Buyun Zhang Siyi Du Shuyuan Liao Xingjie Zhong Yousheng Chen New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq) Plant Diversity Asteraceae Morphology Next-generation sequencing Phylogenomics Subgenus |
| title | New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq) |
| title_full | New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq) |
| title_fullStr | New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq) |
| title_full_unstemmed | New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq) |
| title_short | New insights into the phylogeny and infrageneric taxonomy of Saussurea based on hybrid capture phylogenomics (Hyb-Seq) |
| title_sort | new insights into the phylogeny and infrageneric taxonomy of saussurea based on hybrid capture phylogenomics hyb seq |
| topic | Asteraceae Morphology Next-generation sequencing Phylogenomics Subgenus |
| url | http://www.sciencedirect.com/science/article/pii/S2468265924001689 |
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