Chromosomal studies on the alpine genus Dolomiaea (Asteraceae: Cardueae) from the Qinghai-Tibet Plateau and adjacent regions
文献类型：期刊论文
| 作者 | Wang, Xi; Liu, Bing-Bing; Ma, Ya-Zhen; Xie, Peng-Hui; He, Xin-Yu; Shang, Bao-Long; Wang, Yu-Jin |
| 刊名 | CARYOLOGIA
 |
| 出版日期 | 2013 |
| 卷号 | 66期号:2页码:186-193 |
| 关键词 | chromosome number Dolomiaea evolution karyotype the Qinghai-Tibet Plateau |
| ISSN号 | 0008-7114 |
| DOI | 10.1080/00087114.2013.823296 |
| 文献子类 | Article |
| 英文摘要 | Chromosomal characteristics are important for our understanding of the evolutionary history of species diversification. However, these characteristics are as yet unknown for some plant genera, especially those in alpine regions. In this study, our aim was to investigate the chromosome numbers and karyotypes of Dolomiaea, an alpine genus occurring in the Qinghai-Tibet Plateau and adjacent regions, for the first time. We report the chromosome numbers and karyotypes of 10 species originally assigned to Dolomiaea, one species which has been suggested should be transferred to this genus and one species from the closely related genus Himalaiella. Two chromosome numbers, i.e. 2n = 36 and 2n = 34, were found in these 12 species. One B chromosome was observed in two species. Karyotypes of all the species examined are relatively asymmetrical, and are classified as Stebbins' types 3B and 2B. These findings suggest that polyploidization events played a minor role in species diversification in this alpine genus. Aneuploidy and karyotypic differentiation at the diploid level, instead, contributed greatly to species diversification in this genus. However, many lines of evidence indicate that the ancestor of the genus originated from an ancient polyploidization event. In addition, our results provide cytological evidences of the transference of Frolovia frolovii and Saussurea costus to Dolomiaea, a recent proposal based on molecular phylogenetic context. |
| 学科主题 | Plant Sciences ; Genetics & Heredity |
| 出版地 | FIRENZE |
| 电子版国际标准刊号 | 2165-5391 |
| WOS关键词 | COMPOSITAE ; UNIFORMITY ; KARYOTYPES ; NUMBERS ; SENECIONEAE ; EVOLUTION |
| WOS研究方向 | Science Citation Index Expanded (SCI-EXPANDED) |
| 语种 | 英语 |
| WOS记录号 | WOS:000324113100011 |
| 出版者 | FIRENZE UNIV PRESS |
| 资助机构 | Open Funds of the State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences ; National Natural Science Foundation of China(National Natural Science Foundation of China (NSFC)) ; Program for New Century Excellent Talents in University(Program for New Century Excellent Talents in University (NCET)) ; Fundamental Research Funds for the Central Universities(Fundamental Research Funds for the Central Universities) |
| 源URL | [http://ir.ibcas.ac.cn/handle/2S10CLM1/28112]  |
| 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.Ma, Ya-Zhen 2.Liu, Bing-Bing 3.[Wang, Xi 4.Xie, Peng-Hui 5.He, Xin-Yu 6.Shang, Bao-Long 7.Lanzhou Univ, Coll Life Sci, State Key Lab Grassland Agroecosyst, Mol Ecol Grp, Lanzhou 730000, Peoples R China 8.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 | Wang, Xi,Liu, Bing-Bing,Ma, Ya-Zhen,et al. Chromosomal studies on the alpine genus Dolomiaea (Asteraceae: Cardueae) from the Qinghai-Tibet Plateau and adjacent regions[J]. CARYOLOGIA,2013,66(2):186-193. |
| APA | Wang, Xi.,Liu, Bing-Bing.,Ma, Ya-Zhen.,Xie, Peng-Hui.,He, Xin-Yu.,...&Wang, Yu-Jin.(2013).Chromosomal studies on the alpine genus Dolomiaea (Asteraceae: Cardueae) from the Qinghai-Tibet Plateau and adjacent regions.CARYOLOGIA,66(2),186-193. |
| MLA | Wang, Xi,et al."Chromosomal studies on the alpine genus Dolomiaea (Asteraceae: Cardueae) from the Qinghai-Tibet Plateau and adjacent regions".CARYOLOGIA 66.2(2013):186-193. |
入库方式： OAI收割
来源：植物研究所
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