Comparison of phylogeographical structures of a lichen-forming fungus and its green algal photobiont in western North America
文献类型：期刊论文
| 作者 | Sork, Victoria L.3,5; Chen, Jin-Ming3,4; Werth, Silke1,2,3 |
| 刊名 | JOURNAL OF BIOGEOGRAPHY
 |
| 出版日期 | 2016-05-01 |
| 卷号 | 43期号:5页码:932-943 |
| 关键词 | co-divergence lichen photobiont Ramalina menziesii symbiosis Trebouxia decolorans western North America |
| ISSN号 | 0305-0270 |
| DOI | 10.1111/jbi.12697 |
| 英文摘要 | Aim Lichens comprise a symbiosis of two separate taxa that share geographical distribution but not necessarily the same evolutionary history. Comparison of phylogeographical structures of lichen symbionts provides valuable insight about the processes shaping the lichen's biogeographical pattern. In this study, we tested the extent to which the shared distribution of the widespread lichen-forming fungus Ramalina menziesii and its photobiont Trebouxia decolorans across six major ecoregions reflect parallel genetic structure and gene flow. Location Western North America. Methods Based on DNA sequences from multiple genes, we employed distance-based methods to assess co-divergence of symbiosis partners. To assess historical opportunity for co-evolution, we compare migrations among six ecoregions. Results Tests of genetic concordance between the mycobiont and the photobiont genetic variation revealed an overall significant congruent genetic structure across ecoregions. However, the photobiont and the mycobiont do not have high congruencies within ecoregions and the two taxa have different histories of migration among ecoregions. Main conclusions Congruent phylogeographical patterns in several clades between the mycobiont and the photobiont on a large spatial scale can be explained either by parallel isolation due to ecological and geographical discontinuities or by similar selective pressures on the symbionts due to common environmental conditions within each ecoregion leading to co-divergence. At the regional spatial scale, the two taxa share some degree of evolutionary history but the weak phylogeographical congruence within ecoregions and the lack of shared migration history both indicate a flexible association between mutualists. This flexibility may facilitate the widespread geographical distribution of the lichen. |
| 资助项目 | National Geographical Award ; Swiss National Foundation[PBBEA-111207] ; European Commission within FP7 (LICHENOMICS)[302589] ; UCLA Senate research award ; Chinese Academy of Sciences (CAS)-UCLA Training Program award |
| WOS研究方向 | Environmental Sciences & Ecology ; Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:000375474800007 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/78]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Sork, Victoria L. |
| 作者单位 | 1.Swiss Fed Res Inst WSL, Biodivers & Conservat Biol, Zurcherstrasse 111, CH-8903 Birmensdorf, Switzerland 2.Univ Iceland, Fac Life & Environm Sci, Sturlugata 7, IS-101 Reykjavik, Iceland 3.Univ Calif Los Angeles, Dept Ecol & Evolutionary Biol, Los Angeles, CA 90095 USA 4.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China 5.Univ Calif Los Angeles, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA |
| 推荐引用方式 GB/T 7714 | Sork, Victoria L.,Chen, Jin-Ming,Werth, Silke. Comparison of phylogeographical structures of a lichen-forming fungus and its green algal photobiont in western North America[J]. JOURNAL OF BIOGEOGRAPHY,2016,43(5):932-943. |
| APA | Sork, Victoria L.,Chen, Jin-Ming,&Werth, Silke.(2016).Comparison of phylogeographical structures of a lichen-forming fungus and its green algal photobiont in western North America.JOURNAL OF BIOGEOGRAPHY,43(5),932-943. |
| MLA | Sork, Victoria L.,et al."Comparison of phylogeographical structures of a lichen-forming fungus and its green algal photobiont in western North America".JOURNAL OF BIOGEOGRAPHY 43.5(2016):932-943. |
入库方式： OAI收割
来源：武汉植物园
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