PoplarV1, Main, Exploration, bibRecord, 004620

Carbohydrates in individual poplar fine roots: effects of root age and defoliation.

Identifieur interne : 004620 ( Main/Exploration ); précédent : 004619; suivant : 004621

Carbohydrates in individual poplar fine roots: effects of root age and defoliation.

Auteurs : Kevin R. Kosola [États-Unis] ; Donald I. Dickmann ; Dylan Parry

Source :

Tree physiology [ 0829-318X ] ; 2002.

RBID : pubmed:12091156

Descripteurs français

KwdFr :
- Amidon (analyse), Arbres (composition chimique), Arbres (physiologie), Feuilles de plante (physiologie), Fructose (analyse), Glucides (analyse), Glucose (analyse), Populus (composition chimique), Populus (physiologie), Racines de plante (composition chimique), Racines de plante (physiologie), Saccharose (analyse).
MESH :
- analyse : Amidon, Fructose, Glucides, Glucose, Saccharose.
- composition chimique : Arbres, Populus, Racines de plante.
- physiologie : Arbres, Feuilles de plante, Populus, Racines de plante.

English descriptors

KwdEn :
- Carbohydrates (analysis), Fructose (analysis), Glucose (analysis), Plant Leaves (physiology), Plant Roots (chemistry), Plant Roots (physiology), Populus (chemistry), Populus (physiology), Starch (analysis), Sucrose (analysis), Trees (chemistry), Trees (physiology).
MESH :
- chemical , analysis : Carbohydrates, Fructose, Glucose, Starch, Sucrose.
- chemistry : Plant Roots, Populus, Trees.
- physiology : Plant Leaves, Plant Roots, Populus, Trees.

Abstract

Late-summer starch accumulation in fine roots of poplars (Populus x canadensis Moench.) defoliated by gypsy moth (Lymantria dispar L.) lagged behind that in fine roots of undefoliated trees. If starch concentration declines with age, defoliation-induced changes in root system age structure could be partly responsible for this difference. To test this hypothesis, we measured fine-root starch and soluble sugar concentrations in roots of known age from trees in defoliated and undefoliated plots. There was a significant interaction between the effects of defoliation and root type (white, brown, or dead) on fine root soluble sugar concentration because of the high concentration of soluble sugars in white roots from trees in undefoliated plots. Both root starch and soluble sugar concentrations were variable among individuals of each age class. The population frequency distributions for starch and soluble sugar concentrations were both right-skewed, and fit by exponential functions. These data are most consistent with direct defoliation effects on a labile and dynamic pool of carbohydrates in poplar fine roots, rather than indirect defoliation effects on root system age structure.

DOI: 10.1093/treephys/22.10.741
PubMed: 12091156

Affiliations:

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Le document en format XML

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<author><name sortKey="Kosola, Kevin R" sort="Kosola, Kevin R" uniqKey="Kosola K" first="Kevin R" last="Kosola">Kevin R. Kosola</name>
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<author><name sortKey="Kosola, Kevin R" sort="Kosola, Kevin R" uniqKey="Kosola K" first="Kevin R" last="Kosola">Kevin R. Kosola</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carbohydrates (analysis)</term>
<term>Fructose (analysis)</term>
<term>Glucose (analysis)</term>
<term>Plant Leaves (physiology)</term>
<term>Plant Roots (chemistry)</term>
<term>Plant Roots (physiology)</term>
<term>Populus (chemistry)</term>
<term>Populus (physiology)</term>
<term>Starch (analysis)</term>
<term>Sucrose (analysis)</term>
<term>Trees (chemistry)</term>
<term>Trees (physiology)</term>
</keywords>
<keywords scheme="KwdFr" xml:lang="fr"><term>Amidon (analyse)</term>
<term>Arbres (composition chimique)</term>
<term>Arbres (physiologie)</term>
<term>Feuilles de plante (physiologie)</term>
<term>Fructose (analyse)</term>
<term>Glucides (analyse)</term>
<term>Glucose (analyse)</term>
<term>Populus (composition chimique)</term>
<term>Populus (physiologie)</term>
<term>Racines de plante (composition chimique)</term>
<term>Racines de plante (physiologie)</term>
<term>Saccharose (analyse)</term>
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<keywords scheme="MESH" type="chemical" qualifier="analysis" xml:lang="en"><term>Carbohydrates</term>
<term>Fructose</term>
<term>Glucose</term>
<term>Starch</term>
<term>Sucrose</term>
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<keywords scheme="MESH" qualifier="analyse" xml:lang="fr"><term>Amidon</term>
<term>Fructose</term>
<term>Glucides</term>
<term>Glucose</term>
<term>Saccharose</term>
</keywords>
<keywords scheme="MESH" qualifier="chemistry" xml:lang="en"><term>Plant Roots</term>
<term>Populus</term>
<term>Trees</term>
</keywords>
<keywords scheme="MESH" qualifier="composition chimique" xml:lang="fr"><term>Arbres</term>
<term>Populus</term>
<term>Racines de plante</term>
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<keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Arbres</term>
<term>Feuilles de plante</term>
<term>Populus</term>
<term>Racines de plante</term>
</keywords>
<keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Plant Leaves</term>
<term>Plant Roots</term>
<term>Populus</term>
<term>Trees</term>
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<front><div type="abstract" xml:lang="en">Late-summer starch accumulation in fine roots of poplars (Populus x canadensis Moench.) defoliated by gypsy moth (Lymantria dispar L.) lagged behind that in fine roots of undefoliated trees. If starch concentration declines with age, defoliation-induced changes in root system age structure could be partly responsible for this difference. To test this hypothesis, we measured fine-root starch and soluble sugar concentrations in roots of known age from trees in defoliated and undefoliated plots. There was a significant interaction between the effects of defoliation and root type (white, brown, or dead) on fine root soluble sugar concentration because of the high concentration of soluble sugars in white roots from trees in undefoliated plots. Both root starch and soluble sugar concentrations were variable among individuals of each age class. The population frequency distributions for starch and soluble sugar concentrations were both right-skewed, and fit by exponential functions. These data are most consistent with direct defoliation effects on a labile and dynamic pool of carbohydrates in poplar fine roots, rather than indirect defoliation effects on root system age structure.</div>
</front>
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<DateCompleted><Year>2003</Year>
<Month>03</Month>
<Day>26</Day>
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<DateRevised><Year>2019</Year>
<Month>05</Month>
<Day>13</Day>
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<JournalIssue CitedMedium="Print"><Volume>22</Volume>
<Issue>10</Issue>
<PubDate><Year>2002</Year>
<Month>Jul</Month>
</PubDate>
</JournalIssue>
<Title>Tree physiology</Title>
<ISOAbbreviation>Tree Physiol</ISOAbbreviation>
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<ArticleTitle>Carbohydrates in individual poplar fine roots: effects of root age and defoliation.</ArticleTitle>
<Pagination><MedlinePgn>741-6</MedlinePgn>
</Pagination>
<Abstract><AbstractText>Late-summer starch accumulation in fine roots of poplars (Populus x canadensis Moench.) defoliated by gypsy moth (Lymantria dispar L.) lagged behind that in fine roots of undefoliated trees. If starch concentration declines with age, defoliation-induced changes in root system age structure could be partly responsible for this difference. To test this hypothesis, we measured fine-root starch and soluble sugar concentrations in roots of known age from trees in defoliated and undefoliated plots. There was a significant interaction between the effects of defoliation and root type (white, brown, or dead) on fine root soluble sugar concentration because of the high concentration of soluble sugars in white roots from trees in undefoliated plots. Both root starch and soluble sugar concentrations were variable among individuals of each age class. The population frequency distributions for starch and soluble sugar concentrations were both right-skewed, and fit by exponential functions. These data are most consistent with direct defoliation effects on a labile and dynamic pool of carbohydrates in poplar fine roots, rather than indirect defoliation effects on root system age structure.</AbstractText>
<CopyrightInformation>2002 Heron Publishing--Victoria, Canada</CopyrightInformation>
</Abstract>
<AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Kosola</LastName>
<ForeName>Kevin R</ForeName>
<Initials>KR</Initials>
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<Author ValidYN="Y"><LastName>Parry</LastName>
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<Chemical><RegistryNumber>57-50-1</RegistryNumber>
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<country name="États-Unis"><region name="Michigan"><name sortKey="Kosola, Kevin R" sort="Kosola, Kevin R" uniqKey="Kosola K" first="Kevin R" last="Kosola">Kevin R. Kosola</name>
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Carbohydrates in individual poplar fine roots: effects of root age and defoliation.

Carbohydrates in individual poplar fine roots: effects of root age and defoliation.

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri

Pour générer des pages wiki