Radial distribution pattern of pectin methylesterases across the cambial region of hybrid aspen at activity and dormancy.
Identifieur interne : 004775 ( Main/Exploration ); précédent : 004774; suivant : 004776Radial distribution pattern of pectin methylesterases across the cambial region of hybrid aspen at activity and dormancy.
Auteurs : F. Micheli [France] ; B. Sundberg ; R. Goldberg ; L. RichardSource :
- Plant physiology [ 0032-0889 ] ; 2000.
Descripteurs français
- KwdFr :
- Arbres (anatomie et histologie), Arbres (enzymologie), Arbres (physiologie), Carboxylic ester hydrolases (métabolisme), Croisements génétiques (MeSH), Focalisation isoélectrique (MeSH), Isoenzymes (métabolisme), Paroi cellulaire (enzymologie), Saisons (MeSH), Solubilité (MeSH), Tiges de plante (anatomie et histologie), Tiges de plante (croissance et développement), Tiges de plante (enzymologie).
- MESH :
- anatomie et histologie : Arbres, Tiges de plante.
- croissance et développement : Tiges de plante.
- enzymologie : Arbres, Paroi cellulaire, Tiges de plante.
- métabolisme : Carboxylic ester hydrolases, Isoenzymes.
- physiologie : Arbres.
- Croisements génétiques, Focalisation isoélectrique, Saisons, Solubilité.
English descriptors
- KwdEn :
- Carboxylic Ester Hydrolases (metabolism), Cell Wall (enzymology), Crosses, Genetic (MeSH), Isoelectric Focusing (MeSH), Isoenzymes (metabolism), Plant Stems (anatomy & histology), Plant Stems (enzymology), Plant Stems (growth & development), Seasons (MeSH), Solubility (MeSH), Trees (anatomy & histology), Trees (enzymology), Trees (physiology).
- MESH :
- chemical , metabolism : Carboxylic Ester Hydrolases, Isoenzymes.
- anatomy & histology : Plant Stems, Trees.
- enzymology : Cell Wall, Plant Stems, Trees.
- growth & development : Plant Stems.
- physiology : Trees.
- Crosses, Genetic, Isoelectric Focusing, Seasons, Solubility.
Abstract
Biochemical microanalysis combined with tangential cryosectioning was used to visualize the distribution of pectin methylesterases (PMEs) across the cambial region in active and dormant hybrid aspen (Populus tremula L. x Populus tremuloides Michx). These novel techniques allowed us to relate activity and isoforms of PMEs to specific tissues and developmental stages of the stem to get more information on the physiological function of PMEs in cambial growth. Isoelectrofocusing analysis revealed numerous isoforms that were differentially distributed according to the tissue-type and to the cambial stage. A neutral isoform was found to be distributed ubiquitously across the stem of both active and dormant trees, which suggests that it is a housekeeping isoform involved in the maintenance of the cell wall integrity throughout the stem. In addition, two distinct isoforms having different isoelectric points were found to be related to the differentiation of cambial derivatives. A basic isoform appears to be a physiological marker of the dormant stage involved in the cessation of meristematic radial growth, whereas an acidic isoform is functionally related to the immediate expansion of the cambial daughter cells that occurs bilaterally on each side of the cambium at the active stage.
DOI: 10.1104/pp.124.1.191
PubMed: 10982434
PubMed Central: PMC59134
Affiliations:
Links toward previous steps (curation, corpus...)
Le document en format XML
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Micheli</name><affiliation wicri:level="3"><nlm:affiliation>Laboratoire d'Enzymologie en Milieu Structuré, Département de Biologie Supramoléculaire et Cellulaire, Institut Jacques Monod, 2 Place Jussieu, F-75252 Paris cedex 05, France. micheli@ijm.jussieu.fr</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Enzymologie en Milieu Structuré, Département de Biologie Supramoléculaire et Cellulaire, Institut Jacques Monod, 2 Place Jussieu, F-75252 Paris cedex 05</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Sundberg, B" sort="Sundberg, B" uniqKey="Sundberg B" first="B" last="Sundberg">B. Sundberg</name></author><author><name sortKey="Goldberg, R" sort="Goldberg, R" uniqKey="Goldberg R" first="R" last="Goldberg">R. Goldberg</name></author><author><name sortKey="Richard, L" sort="Richard, L" uniqKey="Richard L" first="L" last="Richard">L. 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Micheli</name><affiliation wicri:level="3"><nlm:affiliation>Laboratoire d'Enzymologie en Milieu Structuré, Département de Biologie Supramoléculaire et Cellulaire, Institut Jacques Monod, 2 Place Jussieu, F-75252 Paris cedex 05, France. micheli@ijm.jussieu.fr</nlm:affiliation><country xml:lang="fr">France</country><wicri:regionArea>Laboratoire d'Enzymologie en Milieu Structuré, Département de Biologie Supramoléculaire et Cellulaire, Institut Jacques Monod, 2 Place Jussieu, F-75252 Paris cedex 05</wicri:regionArea><placeName><region type="region" nuts="2">Île-de-France</region><settlement type="city">Paris</settlement></placeName></affiliation></author><author><name sortKey="Sundberg, B" sort="Sundberg, B" uniqKey="Sundberg B" first="B" last="Sundberg">B. Sundberg</name></author><author><name sortKey="Goldberg, R" sort="Goldberg, R" uniqKey="Goldberg R" first="R" last="Goldberg">R. 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Richard</name></author></analytic><series><title level="j">Plant physiology</title><idno type="ISSN">0032-0889</idno><imprint><date when="2000" type="published">2000</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Carboxylic Ester Hydrolases (metabolism)</term><term>Cell Wall (enzymology)</term><term>Crosses, Genetic (MeSH)</term><term>Isoelectric Focusing (MeSH)</term><term>Isoenzymes (metabolism)</term><term>Plant Stems (anatomy & histology)</term><term>Plant Stems (enzymology)</term><term>Plant Stems (growth & development)</term><term>Seasons (MeSH)</term><term>Solubility (MeSH)</term><term>Trees (anatomy & histology)</term><term>Trees (enzymology)</term><term>Trees (physiology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Arbres (anatomie et histologie)</term><term>Arbres (enzymologie)</term><term>Arbres (physiologie)</term><term>Carboxylic ester hydrolases (métabolisme)</term><term>Croisements génétiques (MeSH)</term><term>Focalisation isoélectrique (MeSH)</term><term>Isoenzymes (métabolisme)</term><term>Paroi cellulaire (enzymologie)</term><term>Saisons (MeSH)</term><term>Solubilité (MeSH)</term><term>Tiges de plante (anatomie et histologie)</term><term>Tiges de plante (croissance et développement)</term><term>Tiges de plante (enzymologie)</term></keywords><keywords scheme="MESH" type="chemical" qualifier="metabolism" xml:lang="en"><term>Carboxylic Ester Hydrolases</term><term>Isoenzymes</term></keywords><keywords scheme="MESH" qualifier="anatomie et histologie" xml:lang="fr"><term>Arbres</term><term>Tiges de plante</term></keywords><keywords scheme="MESH" qualifier="anatomy & histology" xml:lang="en"><term>Plant Stems</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="croissance et développement" xml:lang="fr"><term>Tiges de plante</term></keywords><keywords scheme="MESH" qualifier="enzymologie" xml:lang="fr"><term>Arbres</term><term>Paroi cellulaire</term><term>Tiges de plante</term></keywords><keywords scheme="MESH" qualifier="enzymology" xml:lang="en"><term>Cell Wall</term><term>Plant Stems</term><term>Trees</term></keywords><keywords scheme="MESH" qualifier="growth & development" xml:lang="en"><term>Plant Stems</term></keywords><keywords scheme="MESH" qualifier="métabolisme" xml:lang="fr"><term>Carboxylic ester hydrolases</term><term>Isoenzymes</term></keywords><keywords scheme="MESH" qualifier="physiologie" xml:lang="fr"><term>Arbres</term></keywords><keywords scheme="MESH" qualifier="physiology" xml:lang="en"><term>Trees</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Crosses, Genetic</term><term>Isoelectric Focusing</term><term>Seasons</term><term>Solubility</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Croisements génétiques</term><term>Focalisation isoélectrique</term><term>Saisons</term><term>Solubilité</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Biochemical microanalysis combined with tangential cryosectioning was used to visualize the distribution of pectin methylesterases (PMEs) across the cambial region in active and dormant hybrid aspen (Populus tremula L. x Populus tremuloides Michx). These novel techniques allowed us to relate activity and isoforms of PMEs to specific tissues and developmental stages of the stem to get more information on the physiological function of PMEs in cambial growth. Isoelectrofocusing analysis revealed numerous isoforms that were differentially distributed according to the tissue-type and to the cambial stage. A neutral isoform was found to be distributed ubiquitously across the stem of both active and dormant trees, which suggests that it is a housekeeping isoform involved in the maintenance of the cell wall integrity throughout the stem. In addition, two distinct isoforms having different isoelectric points were found to be related to the differentiation of cambial derivatives. A basic isoform appears to be a physiological marker of the dormant stage involved in the cessation of meristematic radial growth, whereas an acidic isoform is functionally related to the immediate expansion of the cambial daughter cells that occurs bilaterally on each side of the cambium at the active stage.</div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">10982434</PMID><DateCompleted><Year>2000</Year><Month>11</Month><Day>24</Day></DateCompleted><DateRevised><Year>2019</Year><Month>05</Month><Day>14</Day></DateRevised><Article PubModel="Print"><Journal><ISSN IssnType="Print">0032-0889</ISSN><JournalIssue CitedMedium="Print"><Volume>124</Volume><Issue>1</Issue><PubDate><Year>2000</Year><Month>Sep</Month></PubDate></JournalIssue><Title>Plant physiology</Title><ISOAbbreviation>Plant Physiol</ISOAbbreviation></Journal><ArticleTitle>Radial distribution pattern of pectin methylesterases across the cambial region of hybrid aspen at activity and dormancy.</ArticleTitle><Pagination><MedlinePgn>191-9</MedlinePgn></Pagination><Abstract><AbstractText>Biochemical microanalysis combined with tangential cryosectioning was used to visualize the distribution of pectin methylesterases (PMEs) across the cambial region in active and dormant hybrid aspen (Populus tremula L. x Populus tremuloides Michx). These novel techniques allowed us to relate activity and isoforms of PMEs to specific tissues and developmental stages of the stem to get more information on the physiological function of PMEs in cambial growth. Isoelectrofocusing analysis revealed numerous isoforms that were differentially distributed according to the tissue-type and to the cambial stage. A neutral isoform was found to be distributed ubiquitously across the stem of both active and dormant trees, which suggests that it is a housekeeping isoform involved in the maintenance of the cell wall integrity throughout the stem. In addition, two distinct isoforms having different isoelectric points were found to be related to the differentiation of cambial derivatives. A basic isoform appears to be a physiological marker of the dormant stage involved in the cessation of meristematic radial growth, whereas an acidic isoform is functionally related to the immediate expansion of the cambial daughter cells that occurs bilaterally on each side of the cambium at the active stage.</AbstractText></Abstract><AuthorList CompleteYN="Y"><Author ValidYN="Y"><LastName>Micheli</LastName><ForeName>F</ForeName><Initials>F</Initials><AffiliationInfo><Affiliation>Laboratoire d'Enzymologie en Milieu Structuré, Département de Biologie Supramoléculaire et Cellulaire, Institut Jacques Monod, 2 Place Jussieu, F-75252 Paris cedex 05, France. micheli@ijm.jussieu.fr</Affiliation></AffiliationInfo></Author><Author ValidYN="Y"><LastName>Sundberg</LastName><ForeName>B</ForeName><Initials>B</Initials></Author><Author ValidYN="Y"><LastName>Goldberg</LastName><ForeName>R</ForeName><Initials>R</Initials></Author><Author 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IdType="pubmed">11607701</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>France</li></country><region><li>Île-de-France</li></region><settlement><li>Paris</li></settlement></list><tree><noCountry><name sortKey="Goldberg, R" sort="Goldberg, R" uniqKey="Goldberg R" first="R" last="Goldberg">R. Goldberg</name><name sortKey="Richard, L" sort="Richard, L" uniqKey="Richard L" first="L" last="Richard">L. Richard</name><name sortKey="Sundberg, B" sort="Sundberg, B" uniqKey="Sundberg B" first="B" last="Sundberg">B. Sundberg</name></noCountry><country name="France"><region name="Île-de-France"><name sortKey="Micheli, F" sort="Micheli, F" uniqKey="Micheli F" first="F" last="Micheli">F. Micheli</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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