Integrative species delimitation of Selaginella labordei and closely related species: Uncovering the mysterious identity of S. jugorum and S. tibetica, and description of a new species
文献类型：期刊论文
| 作者 | Zhang, Meng-Hua; Zhang, Xian-Chun
|
| 刊名 | TAXON
 |
| 出版日期 | 2022 |
| 卷号 | 71期号:6页码:1155-1169 |
| 关键词 | 26S rDNA new species pgiC plastid genome Selaginella labordei group species delimitation |
| ISSN号 | 0040-0262 |
| DOI | 10.1002/tax.12800 |
| 文献子类 | Article |
| 英文摘要 | The taxonomy of Selaginella has been historically problematic due to the indistinguishable morphological characters within species complexes. The S. labordei group contains (S. subg. Stachygynandrum) 4-7 species, distributed from the Himalayas to eastern China. The taxonomy of this group was problematic due to few collections that were available to delimitate S. jugorum and S. tibetica, and large variation of the widely distributed S. labordei in different ecological conditions. Here, we re-evaluate the species delimitation of the S. labordei group using morphological, molecular and cytological data. A total of 55 individuals representing five species of the S. labordei group were investigated using two nuclear markers (26S rDNA, pgiC), one plastid marker (rbcL), as well as 43 plastid-coding sequences obtained from assembled plastid genomes. Five species are recognized based on the phylogenetic analysis of nuclear genes and plastid-coding sequences. The plastid genomes phylogeny showed a good resolution at lower taxonomic levels. All the individuals of the broadly defined S. labordei formed a monophyletic group in our analyses of different datasets. However, samples of S. chrysocaulos were strongly supported as non-monophyletic and were divided into two clades. One clade of S. chrysocaulos is described as a new species, Selaginella parachrysocaulos sp. nov., which is a cryptic species morphologically almost indistinguishable from S. chrysocaulos but with the microspores covered by a honeycomb-like network microstructure. The nuclear pgiC phylogeny and flow cytometry evidence indicate that some individuals of S. parachrysocaulos may be derived from polyploidization. Based on molecular and morphological evidence, S. sichuanica and S. daozhenensis are treated as synonymous to S. labordei, and S. hengduanshanicola to S. tibetica. Our results uncover the previously mysterious affinities of S. jugorum and S. tibetica, which are members of the S. labordei group. |
| 学科主题 | Plant Sciences ; Evolutionary Biology |
| 出版地 | HOBOKEN |
| 电子版国际标准刊号 | 1996-8175 |
| WOS关键词 | TAXONOMIC REVISION ; CLASSIFICATION |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000851555900001 |
| 出版者 | WILEY |
| 资助机构 | National Natural Science Foundation of China (NSFC) [32170233] ; National Plant Specimen Resource Center Project (NPSRC) [E0117G1001] |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28479]  |
| 专题 | 植物研究所_系统与进化植物学研究中心_系统与进化植物学研究中心_学位论文 |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.[Zhang, Meng-Hua 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Meng-Hua,Zhang, Xian-Chun. Integrative species delimitation of Selaginella labordei and closely related species: Uncovering the mysterious identity of S. jugorum and S. tibetica, and description of a new species[J]. TAXON,2022,71(6):1155-1169. |
| APA | Zhang, Meng-Hua,&Zhang, Xian-Chun.(2022).Integrative species delimitation of Selaginella labordei and closely related species: Uncovering the mysterious identity of S. jugorum and S. tibetica, and description of a new species.TAXON,71(6),1155-1169. |
| MLA | Zhang, Meng-Hua,et al."Integrative species delimitation of Selaginella labordei and closely related species: Uncovering the mysterious identity of S. jugorum and S. tibetica, and description of a new species".TAXON 71.6(2022):1155-1169. |
入库方式： OAI收割
来源：植物研究所
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