Ecotype adaptation and acclimation of leaf traits to rainfall in 29 species of 16-year-old Eucalyptus at two common gardens
Identifieur interne : 009F86 ( Main/Exploration ); précédent : 009F85; suivant : 009F87Ecotype adaptation and acclimation of leaf traits to rainfall in 29 species of 16-year-old Eucalyptus at two common gardens
Auteurs : C. R. Warren [Australie] ; E. Dreyer [France] ; M. Tausz [Australie] ; M. A. Adams [Australie]Source :
- Functional ecology : (Print) [ 0269-8463 ] ; 2006.
Descripteurs français
- Pascal (Inist)
- Wicri :
- topic : Azote.
English descriptors
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Abstract
1. Relationships of leaf traits with rainfall at the place of origin of seed (Rpo) are function of acclimation and adaptation. To disentangle these effects we studied 29 species of 16-year-old Eucalyptus at a productive and an unproductive common garden (mean annual increments of above-ground stem volume = 21 ± 11 and 8 ± 5 m3 ha-1 years-1, respectively).We tested three hypotheses: (i) leaf traits vary between sites, but relationships among them do not; (ii) relationships of leaf traits with Rpo do not vary between sites; and (iii) ecotypes originating from low-rainfall areas allocate a small fraction of nitrogen to thylakoid proteins and Rubisco, and have small SLA, small and narrow leaves, and large water-use efficiency (WUE). 2. Eleven leaf traits (leaf area, leaf thickness, leaf width/length, specific leaf area, fresh weight/dry weight, N, chlorophyll alb, carotenoids/chlorophyll, thylakoid N%, Rubisco N%, WUE derived from 13C content) were measured in 1-year-old sun leaves. 3. Site had a large effect on not only the absolute values of leaf traits, but also relationships between pairs of traits. There were 20 significant correlations between pairs of traits. Three of the correlations had different slopes between sites, while a further nine had different intercepts. Hence the majority of significant correlations were not independent of site. 4. Leaf area and leaf width/length were the only traits related to RPO. There was no evidence that N allocation to Rubisco or thylakoid proteins was related to RPO, or that WUE was greater in ecotypes from dry areas. 5. For Eucalyptus, and perhaps other genera, physiological leaf traits may play a minor role in adaptation to water availability. There is large phenotypic plasticity in many leaf traits affecting not only the absolute values of traits, but also relationships among them.
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Tausz</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Forest and Ecosystem Science, University of Melbourne, Water Street</s1><s2>Creswick, VIC 3363</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Creswick, VIC 3363</wicri:noRegion><orgName type="university">Université de Melbourne</orgName><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName></affiliation></author><author><name sortKey="Adams, M A" sort="Adams, M A" uniqKey="Adams M" first="M. A." last="Adams">M. A. 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R." last="Warren">C. R. Warren</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Forest and Ecosystem Science, University of Melbourne, Water Street</s1><s2>Creswick, VIC 3363</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Creswick, VIC 3363</wicri:noRegion><orgName type="university">Université de Melbourne</orgName><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName></affiliation></author><author><name sortKey="Dreyer, E" sort="Dreyer, E" uniqKey="Dreyer E" first="E." last="Dreyer">E. Dreyer</name><affiliation wicri:level="1"><inist:fA14 i1="02"><s1>UMR INRA-UHP, Ecologie et Ecophysiologie Forestières</s1><s2>54280 Champenoux</s2><s3>FRA</s3><sZ>2 aut.</sZ></inist:fA14><country>France</country><wicri:noRegion>54280 Champenoux</wicri:noRegion><wicri:noRegion>Ecologie et Ecophysiologie Forestières</wicri:noRegion><wicri:noRegion>54280 Champenoux</wicri:noRegion></affiliation></author><author><name sortKey="Tausz, M" sort="Tausz, M" uniqKey="Tausz M" first="M." last="Tausz">M. Tausz</name><affiliation wicri:level="4"><inist:fA14 i1="01"><s1>School of Forest and Ecosystem Science, University of Melbourne, Water Street</s1><s2>Creswick, VIC 3363</s2><s3>AUS</s3><sZ>1 aut.</sZ><sZ>3 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Creswick, VIC 3363</wicri:noRegion><orgName type="university">Université de Melbourne</orgName><placeName><settlement type="city">Melbourne</settlement><region type="état">Victoria (État)</region></placeName></affiliation></author><author><name sortKey="Adams, M A" sort="Adams, M A" uniqKey="Adams M" first="M. A." last="Adams">M. A. Adams</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Ecology and Ecosystem Science, School of Biological, Earth and Environmental Sciences, University of New South Wales</s1><s2>Sydney, NSW 2052</s2><s3>AUS</s3><sZ>4 aut.</sZ></inist:fA14><country>Australie</country><wicri:noRegion>Sydney, NSW 2052</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Functional ecology : (Print)</title><title level="j" type="abbreviated">Funct. ecol. : (Print)</title><idno type="ISSN">0269-8463</idno><imprint><date when="2006">2006</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Functional ecology : (Print)</title><title level="j" type="abbreviated">Funct. ecol. : (Print)</title><idno type="ISSN">0269-8463</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adaptation</term><term>Ecotype</term><term>Eucalyptus</term><term>Garden</term><term>Leaf area</term><term>Morphology</term><term>Nitrogen</term><term>Plant leaf</term><term>Rain</term><term>Ribulose-bisphosphate carboxylase</term><term>Water use efficiency</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Ecotype</term><term>Adaptation</term><term>Feuille végétal</term><term>Pluie</term><term>Jardin</term><term>Morphologie</term><term>Ribulose-bisphosphate carboxylase</term><term>Azote</term><term>Surface foliaire</term><term>Efficacité utilisation eau</term><term>Eucalyptus</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Azote</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">1. Relationships of leaf traits with rainfall at the place of origin of seed (Rpo) are function of acclimation and adaptation. To disentangle these effects we studied 29 species of 16-year-old Eucalyptus at a productive and an unproductive common garden (mean annual increments of above-ground stem volume = 21 ± 11 and 8 ± 5 m<sup>3</sup> ha<sup>-1</sup> years<sup>-1</sup>, respectively).We tested three hypotheses: (i) leaf traits vary between sites, but relationships among them do not; (ii) relationships of leaf traits with Rpo do not vary between sites; and (iii) ecotypes originating from low-rainfall areas allocate a small fraction of nitrogen to thylakoid proteins and Rubisco, and have small SLA, small and narrow leaves, and large water-use efficiency (WUE). 2. Eleven leaf traits (leaf area, leaf thickness, leaf width/length, specific leaf area, fresh weight/dry weight, N, chlorophyll alb, carotenoids/chlorophyll, thylakoid N%, Rubisco N%, WUE derived from <sup>13</sup>C content) were measured in 1-year-old sun leaves. 3. Site had a large effect on not only the absolute values of leaf traits, but also relationships between pairs of traits. There were 20 significant correlations between pairs of traits. Three of the correlations had different slopes between sites, while a further nine had different intercepts. Hence the majority of significant correlations were not independent of site. 4. Leaf area and leaf width/length were the only traits related to R<sub>PO</sub>. There was no evidence that N allocation to Rubisco or thylakoid proteins was related to R<sub>PO</sub>, or that WUE was greater in ecotypes from dry areas. 5. For Eucalyptus, and perhaps other genera, physiological leaf traits may play a minor role in adaptation to water availability. There is large phenotypic plasticity in many leaf traits affecting not only the absolute values of traits, but also relationships among them.</div></front></TEI><affiliations><list><country><li>Australie</li><li>France</li></country><region><li>Victoria (État)</li></region><settlement><li>Melbourne</li></settlement><orgName><li>Université de Melbourne</li></orgName></list><tree><country name="Australie"><region name="Victoria (État)"><name sortKey="Warren, C R" sort="Warren, C R" uniqKey="Warren C" first="C. R." last="Warren">C. R. Warren</name></region><name sortKey="Adams, M A" sort="Adams, M A" uniqKey="Adams M" first="M. A." last="Adams">M. A. Adams</name><name sortKey="Tausz, M" sort="Tausz, M" uniqKey="Tausz M" first="M." last="Tausz">M. Tausz</name></country><country name="France"><noRegion><name sortKey="Dreyer, E" sort="Dreyer, E" uniqKey="Dreyer E" first="E." last="Dreyer">E. Dreyer</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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