Arid
DOI10.1007/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
ISSN0378-2697
EISSN1615-6110
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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