Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00606-013-0921-8 |
Phylogenetic diversity and genome sizes of Astragalus (Fabaceae) in the Lebanon biogeographical crossroad | |
Samad, Farah Abdel1,2; Baumel, Alex1; Juin, Marianick1; Pavon, Daniel1; Siljak-Yakovlev, Sonia3; Medail, Frederic1; Dagher Kharrat, Magda Bou2 | |
通讯作者 | Dagher Kharrat, Magda Bou |
来源期刊 | PLANT SYSTEMATICS AND EVOLUTION
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ISSN | 0378-2697 |
EISSN | 1615-6110 |
出版年 | 2014 |
卷号 | 300期号:5页码:819-830 |
英文摘要 | The Lebanese mountain range is an important zone of plant species richness and endemism where the genus Astragalus constitutes a principal component of plant biodiversity. Most of endemic Astragalus taxa, living in mountains and arid zones of Mounts Lebanon and anti-Lebanon, are characterized by a cushion, spiny vegetative form, named "tragacanthic", which is a remarkable example of vegetative convergence evolution. Because of determination difficulties, taxonomic uncertainties, and discrepancy in the number of taxa listed according to authors, new data are hardly needed to improve systematics of Astragalus and to investigate the role of the Lebanese mountain range as refugia of biodiversity. Before this study only two values on the genome size of Astragalus were reported in the literature and no previous molecular studies had been carried out on Astragalus genus in Lebanon. We examined the utility of rDNA ITS molecular markers to distinguish Astragalus species of Lebanese mountain range and the variation range of their genome size. The main results revealed a striking diversity in Lebanese Astragalus species with the emphasis of a huge variation of genome sizes, an important inter-specific chromosome polymorphism and the existence of a high phylogenetic diversity. The strict endemic species of the Lebanese mountains are positioned throughout the phylogeny. These results confirm that the Lebanon and anti-Lebanon mounts constitute a third diversity center for Astragalus and that high altitude areas are important refugia of plant biodiversity despite centuries of exploitation by humans. |
英文关键词 | Eastern Mediterranean region Endemism Hotspot Irano-Turanian region Phylogeny Glacial refugium |
类型 | Article |
语种 | 英语 |
国家 | France ; Lebanon |
收录类别 | SCI-E |
WOS记录号 | WOS:000334523600004 |
WOS关键词 | NUCLEAR RIBOSOMAL DNA ; MULTIPLE SEQUENCE ALIGNMENT ; MEDITERRANEAN BASIN ; OLD-WORLD ; MOLECULAR SYSTEMATICS ; EVOLUTIONARY ; CONSERVATION ; VEGETATION ; SOFTWARE ; DATABASE |
WOS类目 | Plant Sciences ; Evolutionary Biology |
WOS研究方向 | Plant Sciences ; Evolutionary Biology |
来源机构 | French National Research Institute for Sustainable Development |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/184296 |
作者单位 | 1.Aix Marseille Univ, IMBE, UMR 7263, CNRS, F-13545 Aix En Provence 04, France; 2.Univ St Joseph, Fac Sci, Lab Caracterisat Genom Plantes, Dept Sci Vie & Terre, Mar Roukoz, Mkalles, Lebanon; 3.Univ Paris 11, UMR 8079, CNRS, PSU,AgroParisTech, F-91405 Orsay, France |
推荐引用方式 GB/T 7714 | Samad, Farah Abdel,Baumel, Alex,Juin, Marianick,et al. Phylogenetic diversity and genome sizes of Astragalus (Fabaceae) in the Lebanon biogeographical crossroad[J]. French National Research Institute for Sustainable Development,2014,300(5):819-830. |
APA | Samad, Farah Abdel.,Baumel, Alex.,Juin, Marianick.,Pavon, Daniel.,Siljak-Yakovlev, Sonia.,...&Dagher Kharrat, Magda Bou.(2014).Phylogenetic diversity and genome sizes of Astragalus (Fabaceae) in the Lebanon biogeographical crossroad.PLANT SYSTEMATICS AND EVOLUTION,300(5),819-830. |
MLA | Samad, Farah Abdel,et al."Phylogenetic diversity and genome sizes of Astragalus (Fabaceae) in the Lebanon biogeographical crossroad".PLANT SYSTEMATICS AND EVOLUTION 300.5(2014):819-830. |
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