Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/ece3.646 |
Environmental effects on molecular and phenotypic variation in populations of Eruca sativa across a steep climatic gradient | |
Westberg, Erik1,2,3; Ohali, Shachar1; Shevelevich, Anatoly1,4; Fine, Pinchas5; Barazani, Oz1 | |
通讯作者 | Barazani, Oz |
来源期刊 | ECOLOGY AND EVOLUTION
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ISSN | 2045-7758 |
出版年 | 2013 |
卷号 | 3期号:8页码:2471-2484 |
英文摘要 | In Israel Eruca sativa has a geographically narrow distribution across a steep climatic gradient that ranges from mesic Mediterranean to hot desert environments. These conditions offer an opportunity to study the influence of the environment on intraspecific genetic variation. For this, we combined an analysis of neutral genetic markers with a phenotypic evaluation in common-garden experiments, and environmental characterization of populations that included climatic and edaphic parameters, as well as geographic distribution. A Bayesian clustering of individuals from nine representative populations based on amplified fragment length polymorphism (AFLP) divided the populations into a southern and a northern geographic cluster, with one admixed population at the geographic border between them. Linear mixed models, with cluster added as a grouping factor, revealed no clear effects of environment or geography on genetic distances, but this may be due to a strong association of geography and environment with genetic clusters. However, environmental factors accounted for part of the phenotypic variation observed in the common-garden experiments. In addition, candidate loci for selection were identified by association with environmental parameters and by two outlier methods. One locus, identified by all three methods, also showed an association with trichome density and herbivore damage, in net-house and field experiments, respectively. Accordingly, we propose that because trichomes are directly linked to defense against both herbivores and excess radiation, they could potentially be related to adaptive variation in these populations. These results demonstrate the value of combining environmental and phenotypic data with a detailed genetic survey when studying adaptation in plant populations. |
英文关键词 | Environmental adaptation Eruca sativa genetic diversity outlier loci phenotypic variation |
类型 | Article |
语种 | 英语 |
国家 | Israel ; Germany |
收录类别 | SCI-E |
WOS记录号 | WOS:000323200800007 |
WOS关键词 | HORDEUM-SPONTANEUM KOCH ; GENE FLOW ; MEDITERRANEAN POPULATIONS ; NATURAL-POPULATIONS ; ARIDITY GRADIENT ; ECOTYPIC DIFFERENTIATION ; WATER-STRESS ; GENOME-SCAN ; WILD BARLEY ; PLANT |
WOS类目 | Ecology ; Evolutionary Biology |
WOS研究方向 | Environmental Sciences & Ecology ; Evolutionary Biology |
来源机构 | Hebrew University of Jerusalem |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/176757 |
作者单位 | 1.Agr Res Org, Inst Plant Sci, Israel Plant Gene Bank, IL-50250 Bet Dagan, Israel; 2.Johannes Gutenberg Univ Mainz, Inst Spezielle Bot, D-55099 Mainz, Germany; 3.Johannes Gutenberg Univ Mainz, Bot Garten, D-55099 Mainz, Germany; 4.Hebrew Univ Jerusalem, Robert H Smith Inst Plant Sci & Genet Agr, Robert H Smith Fac Agr Food & Environm, IL-76100 Rehovot, Israel; 5.Agr Res Org, Inst Soil Water & Environm Sci, Dept Soil Chem Plant Nutr & Microbiol, IL-50250 Bet Dagan, Israel |
推荐引用方式 GB/T 7714 | Westberg, Erik,Ohali, Shachar,Shevelevich, Anatoly,et al. Environmental effects on molecular and phenotypic variation in populations of Eruca sativa across a steep climatic gradient[J]. Hebrew University of Jerusalem,2013,3(8):2471-2484. |
APA | Westberg, Erik,Ohali, Shachar,Shevelevich, Anatoly,Fine, Pinchas,&Barazani, Oz.(2013).Environmental effects on molecular and phenotypic variation in populations of Eruca sativa across a steep climatic gradient.ECOLOGY AND EVOLUTION,3(8),2471-2484. |
MLA | Westberg, Erik,et al."Environmental effects on molecular and phenotypic variation in populations of Eruca sativa across a steep climatic gradient".ECOLOGY AND EVOLUTION 3.8(2013):2471-2484. |
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