Diversification and the evolution of dispersal ability in the tribe Brassiceae (Brassicaceae)
Identifieur interne : 000217 ( Main/Exploration ); précédent : 000216; suivant : 000218Diversification and the evolution of dispersal ability in the tribe Brassiceae (Brassicaceae)
Auteurs : C. G. Willis [États-Unis] ; J. C. Hall [Canada] ; R. Rubio De Casas [Espagne] ; T. Y. Wang [États-Unis] ; K. Donohue [États-Unis]Source :
- Annals of Botany [ 0305-7364 ] ; 2014.
Abstract
Dispersal and establishment ability can influence evolutionary processes such as geographic isolation, adaptive divergence and extinction probability. Through these population-level dynamics, dispersal ability may also influence macro-evolutionary processes such as species distributions and diversification. This study examined patterns of evolution of dispersal-related fruit traits, and how the evolution of these traits is correlated with shifts in geographic range size, habitat and diversification rates in the tribe Brassiceae (Brassicaceae).
The phylogenetic analysis included 72 taxa sampled from across the Brassiceae and included both nuclear and chloroplast markers. Dispersal-related fruit characters were scored and climate information for each taxon was retrieved from a database. Correlations between fruit traits, seed characters, habitat, range and climate were determined, together with trait-dependent diversification rates.
It was found that the evolution of traits associated with limited dispersal evolved only in association with compensatory traits that increase dispersal ability. The evolution of increased dispersal ability occurred in multiple ways through the correlated evolution of different combinations of fruit traits. The evolution of traits that increase dispersal ability was in turn associated with larger seed size, increased geographic range size and higher diversification rates.
This study provides evidence that the evolution of increased dispersal ability and larger seed size, which may increase establishment ability, can also influence macro-evolutionary processes, possibly by increasing the propensity for long-distance dispersal. In particular, it may increase speciation and consequent diversification rates by increasing the likelihood of geographic and thereby reproductive isolation.
Url:
DOI: 10.1093/aob/mcu196
PubMed: 25342656
PubMed Central: 4649692
Affiliations:
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Hall</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada</addr-line></nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9</wicri:regionArea><wicri:noRegion>T6G 2E9</wicri:noRegion></affiliation></author><author><name sortKey="Rubio De Casas, R" sort="Rubio De Casas, R" uniqKey="Rubio De Casas R" first="R." last="Rubio De Casas">R. Rubio De Casas</name><affiliation wicri:level="4"><nlm:aff id="af3"><addr-line>Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, Granada, 18071, Spain</addr-line></nlm:aff><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, Granada, 18071</wicri:regionArea><placeName><region nuts="2" type="communauté">Andalousie</region><settlement type="city">Grenade (Espagne)</settlement></placeName><orgName type="university">Université de Grenade</orgName></affiliation></author><author><name sortKey="Wang, T Y" sort="Wang, T Y" uniqKey="Wang T" first="T. Y." last="Wang">T. Y. Wang</name><affiliation wicri:level="2"><nlm:aff id="af4"><addr-line>Duke University School of Medicine, Duke University, DUMC 3710, Durham, NC 27710, USA</addr-line></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Duke University School of Medicine, Duke University, DUMC 3710, Durham, NC 27710</wicri:regionArea><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author><author><name sortKey="Donohue, K" sort="Donohue, K" uniqKey="Donohue K" first="K." last="Donohue">K. 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G." last="Willis">C. G. Willis</name><affiliation wicri:level="2"><nlm:aff id="af1"><addr-line>Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA</addr-line></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, Duke University, Box 90338, Durham, NC 27708</wicri:regionArea><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author><author><name sortKey="Hall, J C" sort="Hall, J C" uniqKey="Hall J" first="J. C." last="Hall">J. C. Hall</name><affiliation wicri:level="1"><nlm:aff id="af2"><addr-line>Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada</addr-line></nlm:aff><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9</wicri:regionArea><wicri:noRegion>T6G 2E9</wicri:noRegion></affiliation></author><author><name sortKey="Rubio De Casas, R" sort="Rubio De Casas, R" uniqKey="Rubio De Casas R" first="R." last="Rubio De Casas">R. Rubio De Casas</name><affiliation wicri:level="4"><nlm:aff id="af3"><addr-line>Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, Granada, 18071, Spain</addr-line></nlm:aff><country xml:lang="fr">Espagne</country><wicri:regionArea>Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, Granada, 18071</wicri:regionArea><placeName><region nuts="2" type="communauté">Andalousie</region><settlement type="city">Grenade (Espagne)</settlement></placeName><orgName type="university">Université de Grenade</orgName></affiliation></author><author><name sortKey="Wang, T Y" sort="Wang, T Y" uniqKey="Wang T" first="T. Y." last="Wang">T. Y. Wang</name><affiliation wicri:level="2"><nlm:aff id="af4"><addr-line>Duke University School of Medicine, Duke University, DUMC 3710, Durham, NC 27710, USA</addr-line></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Duke University School of Medicine, Duke University, DUMC 3710, Durham, NC 27710</wicri:regionArea><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author><author><name sortKey="Donohue, K" sort="Donohue, K" uniqKey="Donohue K" first="K." last="Donohue">K. Donohue</name><affiliation wicri:level="2"><nlm:aff id="af1"><addr-line>Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA</addr-line></nlm:aff><country xml:lang="fr">États-Unis</country><wicri:regionArea>Department of Biology, Duke University, Box 90338, Durham, NC 27708</wicri:regionArea><placeName><region type="state">Caroline du Nord</region></placeName></affiliation></author></analytic><series><title level="j">Annals of Botany</title><idno type="ISSN">0305-7364</idno><idno type="eISSN">1095-8290</idno><imprint><date when="2014">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><sec><title>Background and Aims</title><p>Dispersal and establishment ability can influence evolutionary processes such as geographic isolation, adaptive divergence and extinction probability. Through these population-level dynamics, dispersal ability may also influence macro-evolutionary processes such as species distributions and diversification. This study examined patterns of evolution of dispersal-related fruit traits, and how the evolution of these traits is correlated with shifts in geographic range size, habitat and diversification rates in the tribe Brassiceae (Brassicaceae).</p></sec><sec><title>Methods</title><p>The phylogenetic analysis included 72 taxa sampled from across the Brassiceae and included both nuclear and chloroplast markers. Dispersal-related fruit characters were scored and climate information for each taxon was retrieved from a database. Correlations between fruit traits, seed characters, habitat, range and climate were determined, together with trait-dependent diversification rates.</p></sec><sec><title>Key Results</title><p>It was found that the evolution of traits associated with limited dispersal evolved only in association with compensatory traits that increase dispersal ability. The evolution of increased dispersal ability occurred in multiple ways through the correlated evolution of different combinations of fruit traits. The evolution of traits that increase dispersal ability was in turn associated with larger seed size, increased geographic range size and higher diversification rates.</p></sec><sec><title>Conclusions</title><p>This study provides evidence that the evolution of increased dispersal ability and larger seed size, which may increase establishment ability, can also influence macro-evolutionary processes, possibly by increasing the propensity for long-distance dispersal. In particular, it may increase speciation and consequent diversification rates by increasing the likelihood of geographic and thereby reproductive isolation.</p></sec></div></front></TEI><affiliations><list><country><li>Canada</li><li>Espagne</li><li>États-Unis</li></country><region><li>Andalousie</li><li>Caroline du Nord</li></region><settlement><li>Grenade (Espagne)</li></settlement><orgName><li>Université de Grenade</li></orgName></list><tree><country name="États-Unis"><region name="Caroline du Nord"><name sortKey="Willis, C G" sort="Willis, C G" uniqKey="Willis C" first="C. G." last="Willis">C. G. Willis</name></region><name sortKey="Donohue, K" sort="Donohue, K" uniqKey="Donohue K" first="K." last="Donohue">K. Donohue</name><name sortKey="Wang, T Y" sort="Wang, T Y" uniqKey="Wang T" first="T. Y." last="Wang">T. Y. Wang</name></country><country name="Canada"><noRegion><name sortKey="Hall, J C" sort="Hall, J C" uniqKey="Hall J" first="J. C." last="Hall">J. C. Hall</name></noRegion></country><country name="Espagne"><region name="Andalousie"><name sortKey="Rubio De Casas, R" sort="Rubio De Casas, R" uniqKey="Rubio De Casas R" first="R." last="Rubio De Casas">R. Rubio De Casas</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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