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Diversification and the evolution of dispersal ability in the tribe Brassiceae (Brassicaceae)

Identifieur interne : 000039 ( Pmc/Curation ); précédent : 000038; suivant : 000040

Diversification 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.

RBID : PMC:4649692

Abstract

Background and Aims

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).

Methods

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.

Key Results

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.

Conclusions

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.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4649692

DOI: 10.1093/aob/mcu196
PubMed: 25342656
PubMed Central: 4649692

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<author><name sortKey="Willis, C G" sort="Willis, C G" uniqKey="Willis C" first="C. G." last="Willis">C. G. Willis</name>
<affiliation wicri:level="1"><nlm:aff id="af1"><addr-line>Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA</addr-line>
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<country xml:lang="fr">États-Unis</country>
<wicri:regionArea>Department of Biology, Duke University, Box 90338, Durham, NC 27708</wicri:regionArea>
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<author><name sortKey="Hall, J C" sort="Hall, J C" uniqKey="Hall J" first="J. C." last="Hall">J. C. Hall</name>
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<author><name sortKey="Wang, T Y" sort="Wang, T Y" uniqKey="Wang T" first="T. Y." last="Wang">T. Y. Wang</name>
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<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>
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<country xml:lang="fr">Espagne</country>
<wicri:regionArea>Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, Granada, 18071</wicri:regionArea>
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<author><name sortKey="Wang, T Y" sort="Wang, T Y" uniqKey="Wang T" first="T. Y." last="Wang">T. Y. Wang</name>
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<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>
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<pmc article-type="research-article"><pmc-comment>The publisher of this article does not allow downloading of the full text in XML form.</pmc-comment>
  <front><journal-meta><journal-id journal-id-type="nlm-ta">Ann Bot</journal-id>
<journal-id journal-id-type="iso-abbrev">Ann. Bot</journal-id>
<journal-id journal-id-type="publisher-id">annbot</journal-id>
<journal-id journal-id-type="hwp">annbot</journal-id>
<journal-title-group><journal-title>Annals of Botany</journal-title>
</journal-title-group>
<issn pub-type="ppub">0305-7364</issn>
<issn pub-type="epub">1095-8290</issn>
<publisher><publisher-name>Oxford University Press</publisher-name>
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<article-meta><article-id pub-id-type="pmid">25342656</article-id>
<article-id pub-id-type="pmc">4649692</article-id>
<article-id pub-id-type="doi">10.1093/aob/mcu196</article-id>
<article-id pub-id-type="publisher-id">mcu196</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Original Articles</subject>
</subj-group>
</article-categories>
<title-group><article-title>Diversification and the evolution of dispersal ability in the tribe Brassiceae (Brassicaceae)</article-title>
</title-group>
<contrib-group><contrib contrib-type="author"><name><surname>Willis</surname>
<given-names>C. G.</given-names>
</name>
<xref ref-type="aff" rid="af1">1</xref>
<xref ref-type="corresp" rid="cor1">*</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Hall</surname>
<given-names>J. C.</given-names>
</name>
<xref ref-type="aff" rid="af2">2</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Rubio de Casas</surname>
<given-names>R.</given-names>
</name>
<xref ref-type="aff" rid="af3">3</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Wang</surname>
<given-names>T. Y.</given-names>
</name>
<xref ref-type="aff" rid="af4">4</xref>
</contrib>
<contrib contrib-type="author"><name><surname>Donohue</surname>
<given-names>K.</given-names>
</name>
<xref ref-type="aff" rid="af1">1</xref>
</contrib>
<aff id="af1"><label>1</label>
<addr-line>Department of Biology, Duke University, Box 90338, Durham, NC 27708, USA</addr-line>
</aff>
<aff id="af2"><label>2</label>
<addr-line>Department of Biological Sciences, University of Alberta, Edmonton, Alberta, T6G 2E9, Canada</addr-line>
</aff>
<aff id="af3"><label>3</label>
<addr-line>Departamento de Ecología, Facultad de Ciencias, Universidad de Granada, Granada, 18071, Spain</addr-line>
</aff>
<aff id="af4"><label>4</label>
<addr-line>Duke University School of Medicine, Duke University, DUMC 3710, Durham, NC 27710, USA</addr-line>
</aff>
</contrib-group>
<author-notes><corresp id="cor1"><label>*</label>
For correspondence. Present address: Harvard University Center for the Environment, 24 Oxford Street, Cambridge, MA 02138, USA. E-mail <email>charleswillis@fas.harvard.edu</email>
</corresp>
</author-notes>
<pub-date pub-type="ppub"><month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub"><day>22</day>
<month>10</month>
<year>2014</year>
</pub-date>
<volume>114</volume>
<issue>8</issue>
<fpage>1675</fpage>
<lpage>1686</lpage>
<history><date date-type="received"><day>11</day>
<month>4</month>
<year>2014</year>
</date>
<date date-type="rev-request"><day>9</day>
<month>7</month>
<year>2014</year>
</date>
<date date-type="accepted"><day>21</day>
<month>8</month>
<year>2014</year>
</date>
</history>
<permissions><copyright-statement>© The Author 2014. Published by Oxford University Press on behalf of the Annals of Botany Company. All rights reserved. For Permissions, please email: journals.permissions@oup.com</copyright-statement>
<copyright-year>2014</copyright-year>
</permissions>
<self-uri content-type="pdf" xlink:type="simple" xlink:href="mcu196.pdf"></self-uri>
<abstract><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>
</abstract>
<kwd-group><kwd><italic>Brassica</italic>
</kwd>
<kwd>Brassicaceae</kwd>
<kwd><italic>Cakile</italic>
</kwd>
<kwd>extinction</kwd>
<kwd>fruit traits</kwd>
<kwd>heteroarthrocarpy</kwd>
<kwd>limited dispersal</kwd>
<kwd>long-distance dispersal</kwd>
<kwd>range size</kwd>
<kwd>speciation</kwd>
<kwd>species diversification</kwd>
</kwd-group>
</article-meta>
</front>
</pmc>
</record>

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Diversification and the evolution of dispersal ability in the tribe Brassiceae (Brassicaceae)

Diversification and the evolution of dispersal ability in the tribe Brassiceae (Brassicaceae)

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Abstract

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