How selection fashions morphological variation in Cakile maritima: A comparative analysis of population structure using random amplified polymorphic DNA and quantitative traits
Identifieur interne : 003A67 ( Main/Exploration ); précédent : 003A66; suivant : 003A68How selection fashions morphological variation in Cakile maritima: A comparative analysis of population structure using random amplified polymorphic DNA and quantitative traits
Auteurs : Gandour Mhemmed [Tunisie, France] ; Hessini Kamel [Tunisie] ; Abdelly Chedly [Tunisie]Source :
- Journal of Systematics and Evolution [ 1674-4918 ] ; 2012-03.
Descripteurs français
- Wicri :
- geographic : Tunisie.
- topic : Botanique, Analyse comparative, écologie, Génétique.
English descriptors
- KwdEn :
- Allozyme diversity, Arabidopsis thaliana, Biological sciences, Botany, Cakile, Cakile maritima, Chinese academy, Clarkia dudleyana, Climate regions, Comparative analysis, Comparative studies, Complete range, Crnokrak, Different populations, Dispersal, Divergence, Divergent selection, Diversity index, Ecology, Ecoregion levels, Evolutionary biology, Forest sciences, Fruit size, Fruit type, Genetic, Genetic differentiation, Genetic distance, Genetic distances, Genetic divergence, Genetic diversity, Genetic markers, Genetic structure, Genetic variation, Genetics, Geographical distance, Geographical variation, Germplasm collections, Harvard university, High gene, High similarity, Latta, Leaf length, Leaf morphotype, Local adaptation, Loci coding, Locus, Lower segment, Mantel test, Maritima, Marker, Marker loci, Mckay, Mckay latta, Meril, Molecular ecology, Molecular markers, Molecular variation, Morphological characters, Morphological traits, Morphological variation, Natural populations, Natural selection, Negative correlation, Neutral marker differentiation, Neutral marker loci, Neutral markers, Nuclear markers, Origin sites, Other plants, Ower emergence date, Pairwise combination, Petal, Petal color, Petal length, Petal width, Phenotypic, Phenotypic divergence, Phenotypic traits, Pinus sylvestris, Pistil length, Plant species, Podolsky holtsford, Polymorphic, Population differentiation, Population divergence, Population size, Population structure, Positive correlation, Primer, Quantitative, Quantitative traits, Quercus suber, Random effect, Random polymorphic, Rapd, Rapd analysis, Rapd markers, Rapd variation, Royal society, Sciences mhemmed, Scotch pine, Seed dispersal, Seed number, Selection fashion, Silvae genetica, Sinauer associates, Strong selection, Subdivided species, Systematics, Trait, Tunisia, Upper segment, Variance.
- Teeft :
- Allozyme diversity, Arabidopsis thaliana, Biological sciences, Botany, Cakile, Cakile maritima, Chinese academy, Clarkia dudleyana, Climate regions, Comparative analysis, Comparative studies, Complete range, Crnokrak, Different populations, Dispersal, Divergence, Divergent selection, Diversity index, Ecology, Ecoregion levels, Evolutionary biology, Forest sciences, Fruit size, Fruit type, Genetic, Genetic differentiation, Genetic distance, Genetic distances, Genetic divergence, Genetic diversity, Genetic markers, Genetic structure, Genetic variation, Genetics, Geographical distance, Geographical variation, Germplasm collections, Harvard university, High gene, High similarity, Latta, Leaf length, Leaf morphotype, Local adaptation, Loci coding, Locus, Lower segment, Mantel test, Maritima, Marker, Marker loci, Mckay, Mckay latta, Meril, Molecular ecology, Molecular markers, Molecular variation, Morphological characters, Morphological traits, Morphological variation, Natural populations, Natural selection, Negative correlation, Neutral marker differentiation, Neutral marker loci, Neutral markers, Nuclear markers, Origin sites, Other plants, Ower emergence date, Pairwise combination, Petal, Petal color, Petal length, Petal width, Phenotypic, Phenotypic divergence, Phenotypic traits, Pinus sylvestris, Pistil length, Plant species, Podolsky holtsford, Polymorphic, Population differentiation, Population divergence, Population size, Population structure, Positive correlation, Primer, Quantitative, Quantitative traits, Quercus suber, Random effect, Random polymorphic, Rapd, Rapd analysis, Rapd markers, Rapd variation, Royal society, Sciences mhemmed, Scotch pine, Seed dispersal, Seed number, Selection fashion, Silvae genetica, Sinauer associates, Strong selection, Subdivided species, Systematics, Trait, Tunisia, Upper segment, Variance.
Abstract
Abstract It is a long‐standing debate in evolutionary biology whether natural selection can generate divergence in the face of gene flow. Comparative studies of quantitative genetic and neutral marker differentiation have provided means for detecting the action of selection and random genetic drift in natural populations. We estimated the degree of population divergence in several quantitative traits and compared these estimates with that based on presumably neutral molecular markers (random amplified polymorphic DNA [RAPD]). This approach allowed us to disentangle the effects of divergent selection from that of other evolutionary forces. Nine populations of Cakile maritima, which encompasses the complete range of distribution of this species in Tunisia, were examined. We found a high proportion of total genetic variance to be among populations and among ecoregions for quantitative traits (range of QST: 0.44–0.88) and a moderate one for RAPD markers (GST: 0.081). In addition, almost all characters displayed a significant higher QST than GST, indicating occurrence of phenotypic plasticity and local adaptation. The latter is explicable as there is no reason to expect that natural selection would affect in similar fashion all traits and affect all populations at a similar level. We also found a negative and significant correlation between genetic variation in molecular marker loci and quantitative traits at the multitrait scale. This result attests that the evolution of these markers in C. maritima were not paralleled, suggesting that the degree of genetic differentiation in neutral marker loci is closely predictive of the degree of differentiation in loci coding quantitative traits and the majority of these neutral markers negatively controlled the studied quantitative traits.
Url:
DOI: 10.1111/j.1759-6831.2011.00176.x
Affiliations:
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sortKey="Mhemmed, Gandour" sort="Mhemmed, Gandour" uniqKey="Mhemmed G" first="Gandour" last="Mhemmed">Gandour Mhemmed</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Tunisie</country><wicri:regionArea>(Laboratory of Extrêmophiles Plants, Centre of Biotechnology of Borj‐Cédria, Hammam‐Lif 2050</wicri:regionArea><wicri:noRegion>Hammam‐Lif 2050</wicri:noRegion></affiliation><affiliation wicri:level="1"><country wicri:rule="url">France</country></affiliation></author><author><name sortKey="Kamel, Hessini" sort="Kamel, Hessini" uniqKey="Kamel H" first="Hessini" last="Kamel">Hessini Kamel</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Tunisie</country><wicri:regionArea>(Laboratory of Extrêmophiles Plants, Centre of Biotechnology of Borj‐Cédria, Hammam‐Lif 2050</wicri:regionArea><wicri:noRegion>Hammam‐Lif 2050</wicri:noRegion></affiliation></author><author><name sortKey="Chedly, Abdelly" sort="Chedly, Abdelly" uniqKey="Chedly A" first="Abdelly" last="Chedly">Abdelly Chedly</name><affiliation wicri:level="1"><country xml:lang="fr" wicri:curation="lc">Tunisie</country><wicri:regionArea>(Laboratory of Extrêmophiles Plants, Centre of Biotechnology of Borj‐Cédria, Hammam‐Lif 2050</wicri:regionArea><wicri:noRegion>Hammam‐Lif 2050</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Journal of Systematics and Evolution</title><title level="j" type="alt">JOURNAL OF SYSTEMATICS AND EVOLUTION</title><idno type="ISSN">1674-4918</idno><idno type="eISSN">1759-6831</idno><imprint><biblScope unit="vol">50</biblScope><biblScope unit="issue">2</biblScope><biblScope unit="page" from="109">109</biblScope><biblScope unit="page" to="118">118</biblScope><biblScope unit="page-count">10</biblScope><publisher>Blackwell Publishing Inc</publisher><pubPlace>Malden, USA</pubPlace><date type="published" when="2012-03">2012-03</date></imprint><idno type="ISSN">1674-4918</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">1674-4918</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Allozyme diversity</term><term>Arabidopsis thaliana</term><term>Biological sciences</term><term>Botany</term><term>Cakile</term><term>Cakile maritima</term><term>Chinese academy</term><term>Clarkia dudleyana</term><term>Climate regions</term><term>Comparative analysis</term><term>Comparative studies</term><term>Complete range</term><term>Crnokrak</term><term>Different populations</term><term>Dispersal</term><term>Divergence</term><term>Divergent selection</term><term>Diversity index</term><term>Ecology</term><term>Ecoregion levels</term><term>Evolutionary biology</term><term>Forest sciences</term><term>Fruit size</term><term>Fruit type</term><term>Genetic</term><term>Genetic differentiation</term><term>Genetic distance</term><term>Genetic distances</term><term>Genetic divergence</term><term>Genetic diversity</term><term>Genetic markers</term><term>Genetic structure</term><term>Genetic variation</term><term>Genetics</term><term>Geographical distance</term><term>Geographical variation</term><term>Germplasm collections</term><term>Harvard university</term><term>High gene</term><term>High similarity</term><term>Latta</term><term>Leaf length</term><term>Leaf morphotype</term><term>Local adaptation</term><term>Loci coding</term><term>Locus</term><term>Lower segment</term><term>Mantel test</term><term>Maritima</term><term>Marker</term><term>Marker loci</term><term>Mckay</term><term>Mckay latta</term><term>Meril</term><term>Molecular ecology</term><term>Molecular markers</term><term>Molecular variation</term><term>Morphological characters</term><term>Morphological traits</term><term>Morphological variation</term><term>Natural populations</term><term>Natural selection</term><term>Negative correlation</term><term>Neutral marker differentiation</term><term>Neutral marker loci</term><term>Neutral markers</term><term>Nuclear markers</term><term>Origin sites</term><term>Other plants</term><term>Ower emergence date</term><term>Pairwise combination</term><term>Petal</term><term>Petal color</term><term>Petal length</term><term>Petal width</term><term>Phenotypic</term><term>Phenotypic divergence</term><term>Phenotypic traits</term><term>Pinus sylvestris</term><term>Pistil length</term><term>Plant species</term><term>Podolsky holtsford</term><term>Polymorphic</term><term>Population differentiation</term><term>Population divergence</term><term>Population size</term><term>Population structure</term><term>Positive correlation</term><term>Primer</term><term>Quantitative</term><term>Quantitative traits</term><term>Quercus suber</term><term>Random effect</term><term>Random polymorphic</term><term>Rapd</term><term>Rapd analysis</term><term>Rapd markers</term><term>Rapd variation</term><term>Royal society</term><term>Sciences mhemmed</term><term>Scotch pine</term><term>Seed dispersal</term><term>Seed number</term><term>Selection fashion</term><term>Silvae genetica</term><term>Sinauer associates</term><term>Strong selection</term><term>Subdivided species</term><term>Systematics</term><term>Trait</term><term>Tunisia</term><term>Upper segment</term><term>Variance</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Allozyme diversity</term><term>Arabidopsis thaliana</term><term>Biological sciences</term><term>Botany</term><term>Cakile</term><term>Cakile maritima</term><term>Chinese academy</term><term>Clarkia dudleyana</term><term>Climate regions</term><term>Comparative analysis</term><term>Comparative studies</term><term>Complete range</term><term>Crnokrak</term><term>Different populations</term><term>Dispersal</term><term>Divergence</term><term>Divergent selection</term><term>Diversity index</term><term>Ecology</term><term>Ecoregion levels</term><term>Evolutionary biology</term><term>Forest sciences</term><term>Fruit size</term><term>Fruit type</term><term>Genetic</term><term>Genetic differentiation</term><term>Genetic distance</term><term>Genetic distances</term><term>Genetic divergence</term><term>Genetic diversity</term><term>Genetic markers</term><term>Genetic structure</term><term>Genetic variation</term><term>Genetics</term><term>Geographical distance</term><term>Geographical variation</term><term>Germplasm collections</term><term>Harvard university</term><term>High gene</term><term>High similarity</term><term>Latta</term><term>Leaf length</term><term>Leaf morphotype</term><term>Local adaptation</term><term>Loci coding</term><term>Locus</term><term>Lower segment</term><term>Mantel test</term><term>Maritima</term><term>Marker</term><term>Marker loci</term><term>Mckay</term><term>Mckay latta</term><term>Meril</term><term>Molecular ecology</term><term>Molecular markers</term><term>Molecular variation</term><term>Morphological characters</term><term>Morphological traits</term><term>Morphological variation</term><term>Natural populations</term><term>Natural selection</term><term>Negative correlation</term><term>Neutral marker differentiation</term><term>Neutral marker loci</term><term>Neutral markers</term><term>Nuclear markers</term><term>Origin sites</term><term>Other plants</term><term>Ower emergence date</term><term>Pairwise combination</term><term>Petal</term><term>Petal color</term><term>Petal length</term><term>Petal width</term><term>Phenotypic</term><term>Phenotypic divergence</term><term>Phenotypic traits</term><term>Pinus sylvestris</term><term>Pistil length</term><term>Plant species</term><term>Podolsky holtsford</term><term>Polymorphic</term><term>Population differentiation</term><term>Population divergence</term><term>Population size</term><term>Population structure</term><term>Positive correlation</term><term>Primer</term><term>Quantitative</term><term>Quantitative traits</term><term>Quercus suber</term><term>Random effect</term><term>Random polymorphic</term><term>Rapd</term><term>Rapd analysis</term><term>Rapd markers</term><term>Rapd variation</term><term>Royal society</term><term>Sciences mhemmed</term><term>Scotch pine</term><term>Seed dispersal</term><term>Seed number</term><term>Selection fashion</term><term>Silvae genetica</term><term>Sinauer associates</term><term>Strong selection</term><term>Subdivided species</term><term>Systematics</term><term>Trait</term><term>Tunisia</term><term>Upper segment</term><term>Variance</term></keywords><keywords scheme="Wicri" type="geographic" xml:lang="fr"><term>Tunisie</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Botanique</term><term>Analyse comparative</term><term>écologie</term><term>Génétique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">Abstract It is a long‐standing debate in evolutionary biology whether natural selection can generate divergence in the face of gene flow. Comparative studies of quantitative genetic and neutral marker differentiation have provided means for detecting the action of selection and random genetic drift in natural populations. We estimated the degree of population divergence in several quantitative traits and compared these estimates with that based on presumably neutral molecular markers (random amplified polymorphic DNA [RAPD]). This approach allowed us to disentangle the effects of divergent selection from that of other evolutionary forces. Nine populations of Cakile maritima, which encompasses the complete range of distribution of this species in Tunisia, were examined. We found a high proportion of total genetic variance to be among populations and among ecoregions for quantitative traits (range of QST: 0.44–0.88) and a moderate one for RAPD markers (GST: 0.081). In addition, almost all characters displayed a significant higher QST than GST, indicating occurrence of phenotypic plasticity and local adaptation. The latter is explicable as there is no reason to expect that natural selection would affect in similar fashion all traits and affect all populations at a similar level. We also found a negative and significant correlation between genetic variation in molecular marker loci and quantitative traits at the multitrait scale. This result attests that the evolution of these markers in C. maritima were not paralleled, suggesting that the degree of genetic differentiation in neutral marker loci is closely predictive of the degree of differentiation in loci coding quantitative traits and the majority of these neutral markers negatively controlled the studied quantitative traits.</div></front></TEI><affiliations><list><country><li>France</li><li>Tunisie</li></country></list><tree><country name="Tunisie"><noRegion><name sortKey="Mhemmed, Gandour" sort="Mhemmed, Gandour" uniqKey="Mhemmed G" first="Gandour" last="Mhemmed">Gandour Mhemmed</name></noRegion><name sortKey="Chedly, Abdelly" sort="Chedly, Abdelly" uniqKey="Chedly A" first="Abdelly" last="Chedly">Abdelly Chedly</name><name sortKey="Kamel, Hessini" sort="Kamel, Hessini" uniqKey="Kamel H" first="Hessini" last="Kamel">Hessini Kamel</name></country><country name="France"><noRegion><name sortKey="Mhemmed, Gandour" sort="Mhemmed, Gandour" uniqKey="Mhemmed G" first="Gandour" last="Mhemmed">Gandour Mhemmed</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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