Using modern plant trait relationships between observed and theoretical maximum stomatal conductance and vein density to examine patterns of plant macroevolution
Identifieur interne : 000378 ( Main/Exploration ); précédent : 000377; suivant : 000379Using modern plant trait relationships between observed and theoretical maximum stomatal conductance and vein density to examine patterns of plant macroevolution
Auteurs : Jennifer C. Mcelwain ; Charilaos Yiotis ; Tracy LawsonSource :
- The New Phytologist [ 0028-646X ] ; 2015.
Abstract
Understanding the drivers of geological‐scale patterns in plant macroevolution is limited by a hesitancy to use measurable traits of fossils to infer palaeoecophysiological function. Here, scaling relationships between morphological traits including maximum theoretical stomatal conductance ( Our study demonstrated significant relationships between Expansion of the ecophysiological niche space in angiosperms, afforded by coordinated evolution of high
Url:
DOI: 10.1111/nph.13579
PubMed: 26230251
PubMed Central: 5014202
Affiliations:
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Mcelwain</name><affiliation><nlm:aff id="nph13579-aff-0001"></nlm:aff></affiliation><affiliation><nlm:aff id="nph13579-aff-0002"></nlm:aff></affiliation></author><author><name sortKey="Yiotis, Charilaos" sort="Yiotis, Charilaos" uniqKey="Yiotis C" first="Charilaos" last="Yiotis">Charilaos Yiotis</name><affiliation><nlm:aff id="nph13579-aff-0001"></nlm:aff></affiliation><affiliation><nlm:aff id="nph13579-aff-0002"></nlm:aff></affiliation></author><author><name sortKey="Lawson, Tracy" sort="Lawson, Tracy" uniqKey="Lawson T" first="Tracy" last="Lawson">Tracy Lawson</name><affiliation><nlm:aff id="nph13579-aff-0003"></nlm:aff></affiliation></author></titleStmt><publicationStmt><idno type="wicri:source">PMC</idno><idno type="pmid">26230251</idno><idno type="pmc">5014202</idno><idno type="url">http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5014202</idno><idno type="RBID">PMC:5014202</idno><idno type="doi">10.1111/nph.13579</idno><date when="2015">2015</date><idno type="wicri:Area/Pmc/Corpus">001070</idno><idno type="wicri:Area/Pmc/Curation">001069</idno><idno type="wicri:Area/Pmc/Checkpoint">000295</idno><idno type="wicri:Area/Ncbi/Merge">001C47</idno><idno type="wicri:Area/Ncbi/Curation">001C47</idno><idno type="wicri:Area/Ncbi/Checkpoint">001C47</idno><idno type="wicri:doubleKey">0028-646X:2015:Mcelwain J:using:modern:plant</idno><idno type="wicri:Area/Main/Merge">000378</idno><idno type="wicri:Area/Main/Curation">000378</idno><idno type="wicri:Area/Main/Exploration">000378</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en" level="a" type="main">Using modern plant trait relationships between observed and theoretical maximum stomatal conductance and vein density to examine patterns of plant macroevolution</title><author><name sortKey="Mcelwain, Jennifer C" sort="Mcelwain, Jennifer C" uniqKey="Mcelwain J" first="Jennifer C." last="Mcelwain">Jennifer C. Mcelwain</name><affiliation><nlm:aff id="nph13579-aff-0001"></nlm:aff></affiliation><affiliation><nlm:aff id="nph13579-aff-0002"></nlm:aff></affiliation></author><author><name sortKey="Yiotis, Charilaos" sort="Yiotis, Charilaos" uniqKey="Yiotis C" first="Charilaos" last="Yiotis">Charilaos Yiotis</name><affiliation><nlm:aff id="nph13579-aff-0001"></nlm:aff></affiliation><affiliation><nlm:aff id="nph13579-aff-0002"></nlm:aff></affiliation></author><author><name sortKey="Lawson, Tracy" sort="Lawson, Tracy" uniqKey="Lawson T" first="Tracy" last="Lawson">Tracy Lawson</name><affiliation><nlm:aff id="nph13579-aff-0003"></nlm:aff></affiliation></author></analytic><series><title level="j">The New Phytologist</title><idno type="ISSN">0028-646X</idno><idno type="eISSN">1469-8137</idno><imprint><date when="2015">2015</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><title>Summary</title><p><list list-type="bullet" id="nph13579-list-0001"><list-item><p>Understanding the drivers of geological‐scale patterns in plant macroevolution is limited by a hesitancy to use measurable traits of fossils to infer palaeoecophysiological function.</p></list-item><list-item><p>Here, scaling relationships between morphological traits including maximum theoretical stomatal conductance (<italic>g</italic><sub>max</sub>) and leaf vein density (<italic>D</italic><sub>v</sub>) and physiological measurements including operational stomatal conductance (<italic>g</italic><sub>op</sub>), saturated (<italic>A</italic><sub>sat</sub><italic>)</italic> and maximum (<italic>A</italic><sub>max</sub>) assimilation rates were investigated for 18 extant taxa in order to improve understanding of angiosperm diversification in the Cretaceous.</p></list-item><list-item><p>Our study demonstrated significant relationships between <italic>g</italic><sub>op</sub>, <italic>g</italic><sub>max</sub> and <italic>D</italic><sub>v</sub> that together can be used to estimate gas exchange and the photosynthetic capacities of fossils. We showed that acquisition of high <italic>g</italic><sub>max</sub> in angiosperms conferred a competitive advantage over gymnosperms by increasing the dynamic range (plasticity) of their gas exchange and expanding their ecophysiological niche space. We suggest that species with a high <italic>g</italic><sub>max</sub> (> 1400 mmol m<sup>−2</sup> s<sup>−1</sup>) would have been capable of maintaining a high <italic>A</italic><sub>max</sub> as the atmospheric <styled-content style="fixed-case">CO</styled-content><sub>2</sub> declined through the Cretaceous, whereas gymnosperms with a low <italic>g</italic><sub>max</sub> would experience severe photosynthetic penalty.</p></list-item><list-item><p>Expansion of the ecophysiological niche space in angiosperms, afforded by coordinated evolution of high <italic>g</italic><sub>max</sub><italic>, D</italic><sub>v</sub> and increased plasticity in <italic>g</italic><sub>op</sub><italic>,</italic> adds further functional insights into the mechanisms driving angiosperm speciation.</p></list-item></list></p></div></front><back><div1 type="bibliography"><listBibl><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Schulze, Ed" uniqKey="Schulze E">ED Schulze</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Hemsley, Ar" uniqKey="Hemsley A">AR Hemsley</name></author></analytic></biblStruct><biblStruct><analytic><author><name sortKey="Luttge, U" uniqKey="Luttge U">U Lüttge</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Greihuber, J" uniqKey="Greihuber J">J Greihuber</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct><analytic><author><name sortKey="Ehleringer, Jr" uniqKey="Ehleringer J">JR Ehleringer</name></author></analytic></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct><biblStruct></biblStruct></listBibl></div1></back></TEI><affiliations><list></list><tree><noCountry><name sortKey="Lawson, Tracy" sort="Lawson, Tracy" uniqKey="Lawson T" first="Tracy" last="Lawson">Tracy Lawson</name><name sortKey="Mcelwain, Jennifer C" sort="Mcelwain, Jennifer C" uniqKey="Mcelwain J" first="Jennifer C." last="Mcelwain">Jennifer C. 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