Genetic variation and gene flow in the endangered aquatic fern Ceratopteris pteridoides in China, and conservation implications
文献类型：期刊论文
| 作者 | Dong, Yuan-Huo1; Gituru, Robert Wahiti2; Wang, Qing-Feng3 |
| 刊名 | ANNALES BOTANICI FENNICI
 |
| 出版日期 | 2010-03-10 |
| 卷号 | 47期号:1页码:34-44 |
| 关键词 | Ceratopteris pteridoides conservation genetic variation gene flow RAPD |
| ISSN号 | 0003-3847 |
| 英文摘要 | Random Amplified Polymorphic DNA (RAPD) markers were used to measure the levels of genetic variation and patterns of the population structure within and among the five remaining populations of Ceratopteris pteridoides, an endangered aquatic fern in China. Fourteen RAPD primers amplified 101 reproducible bands, with 34 (33.66%) of them being polymorphic, indicating low levels of genetic diversity at the species level. The level of genetic diversity within the populations was considerably lower, with the percentage of polymorphic bands (PPB) ranging from 16.83% to 24.75%. AMOVA analysis revealed a low level of genetic variation (30.92%) among the populations. The UPGMA cluster of 72 samples detected that individuals from the same population did not form one distinct group, indicating high levels of gene flow between the populations. A Mantel test showed no significant relationship between genetic distance and geographic distance (r = 0.2166). Our results were similar to those obtained in an earlier ISSR analysis. Thus both RAPD and ISSR markers have comparable sensitivity, and could be employed to assess the partition of genetic diversity within and among populations. Several factors including clonal growth, inbreeding, high spore dispersal and the extensive hydrologic connectivity among populations which facilitate long-distance gene flow, might have played an important role in maintaining the genetic structure of the populations. In view of the genetic information currently available, we recommend establishing as many in situ conservation spots as possible and the cross transplanting of plants between populations in order to increase gene flow and preserve the genetic resources of the species. |
| 资助项目 | National Natural Science Foundation of China[30570111] ; CAS[KSCX2-YW-Z-0805] |
| WOS研究方向 | Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000275343800004 |
| 出版者 | FINNISH ZOOLOGICAL BOTANICAL PUBLISHING BOARD |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/969]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Dong, Yuan-Huo |
| 作者单位 | 1.Jianghan Univ, Dept Biol Technol, Coll Life Sci, Wuhan 430056, Peoples R China 2.Jomo Kenyatta Univ Agr & Technol, Dept Bot, Nairobi, Kenya 3.Chinese Acad Sci, Wuhan Bot Garden, Wuhan 430074, Peoples R China |
| 推荐引用方式 GB/T 7714 | Dong, Yuan-Huo,Gituru, Robert Wahiti,Wang, Qing-Feng. Genetic variation and gene flow in the endangered aquatic fern Ceratopteris pteridoides in China, and conservation implications[J]. ANNALES BOTANICI FENNICI,2010,47(1):34-44. |
| APA | Dong, Yuan-Huo,Gituru, Robert Wahiti,&Wang, Qing-Feng.(2010).Genetic variation and gene flow in the endangered aquatic fern Ceratopteris pteridoides in China, and conservation implications.ANNALES BOTANICI FENNICI,47(1),34-44. |
| MLA | Dong, Yuan-Huo,et al."Genetic variation and gene flow in the endangered aquatic fern Ceratopteris pteridoides in China, and conservation implications".ANNALES BOTANICI FENNICI 47.1(2010):34-44. |
入库方式： OAI收割
来源：武汉植物园
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