Proteins associated with cork formation in Quercus suber L. stem tissues
Identifieur interne : 000505 ( Main/Curation ); précédent : 000504; suivant : 000506Proteins associated with cork formation in Quercus suber L. stem tissues
Auteurs : Cândido P. P. Ricardo [Portugal] ; Isabel Martins [Portugal] ; Rita Francisco [Portugal] ; Kjell Sergeant [Luxembourg (pays)] ; Carla Pinheiro [Portugal] ; Alexandre Campos [Portugal] ; Jenny Renaut [Luxembourg (pays)] ; Pedro Fevereiro [Portugal]Source :
- Journal of proteomics : (Print) [ 1874-3919 ] ; 2011.
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- Pascal (Inist)
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Abstract
Cork (phellem) formation in Quercus suber stem was studied by proteomic analysis of young shoots of increasing age (Y0, Y1 and Y4) and recently-formed phellem (Y8Ph) and xylem (Y8X) from an 8-year-old branch. In this study 99 proteins were identified, 45 excised from Y8X and 54 from Y8Ph. These ones, specifically associated with phellem, are of "carbohydrate metabolism" (28%), "defence" (22%), "protein folding, stability and degradation" (19%), "regulation/ signalling" (11%), "secondary metabolism" (9%), "energy metabolism" (6%), and "membrane transport" (2%). The identification in phellem of galactosidases, xylosidases, apiose/xylose synthase, laccases and diphenol oxidases suggests intense cell wall reorganization, possibly with participation of hemicellulose/pectin biosynthesis and phenol oxidation. The identification of proteasome subunits, heat shock proteins, cyclophylin, subtilisin-like proteases, 14-3-3 proteins, Rab2 protein and enzymes interacting with nucleosides/nucleic acids gives additional evidence for cellular reorganization, involving cellular secretion, protein turnover regulation and active control processes. The high involvement in phellem of defence proteins (thioredoxin-dependent peroxidase, glutathione-S-transferase, SGT1 protein, cystatin, and chitinases) suggests a strong need for cell protection from the intense stressful events occurring in active phellem, namely, desiccation, pests/disease protection, detoxification and cell death. Identically, highly enhanced defence functions were previously reported for potato periderm formation.
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P." last="Ricardo">Cândido P. P. 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Environment and Agrobiotechnologies, 41, rue du Brill</s1><s2>4422 Belvaux</s2><s3>LUX</s3><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Luxembourg (pays)</country><wicri:noRegion>4422 Belvaux</wicri:noRegion></affiliation></author><author><name sortKey="Pinheiro, Carla" sort="Pinheiro, Carla" uniqKey="Pinheiro C" first="Carla" last="Pinheiro">Carla Pinheiro</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN</s1><s2>2780-157 Oeiras</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>2780-157 Oeiras</wicri:noRegion></affiliation></author><author><name sortKey="Campos, Alexandre" sort="Campos, Alexandre" uniqKey="Campos A" first="Alexandre" last="Campos">Alexandre Campos</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN</s1><s2>2780-157 Oeiras</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>2780-157 Oeiras</wicri:noRegion></affiliation></author><author><name sortKey="Renaut, Jenny" sort="Renaut, Jenny" uniqKey="Renaut J" first="Jenny" last="Renaut">Jenny Renaut</name><affiliation wicri:level="1"><inist:fA14 i1="03"><s1>Centre de Recherche Public-Gabriel Lippmann, Department Environment and Agrobiotechnologies, 41, rue du Brill</s1><s2>4422 Belvaux</s2><s3>LUX</s3><sZ>4 aut.</sZ><sZ>7 aut.</sZ></inist:fA14><country>Luxembourg (pays)</country><wicri:noRegion>4422 Belvaux</wicri:noRegion></affiliation></author><author><name sortKey="Fevereiro, Pedro" sort="Fevereiro, Pedro" uniqKey="Fevereiro P" first="Pedro" last="Fevereiro">Pedro Fevereiro</name><affiliation wicri:level="1"><inist:fA14 i1="01"><s1>Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, EAN</s1><s2>2780-157 Oeiras</s2><s3>PRT</s3><sZ>1 aut.</sZ><sZ>2 aut.</sZ><sZ>3 aut.</sZ><sZ>5 aut.</sZ><sZ>6 aut.</sZ><sZ>8 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>2780-157 Oeiras</wicri:noRegion></affiliation><affiliation wicri:level="1"><inist:fA14 i1="04"><s1>Faculdade de Ciencias, Universidade de Lisboa, Campo Grande</s1><s2>1749-016 Lisboa</s2><s3>PRT</s3><sZ>8 aut.</sZ></inist:fA14><country>Portugal</country><wicri:noRegion>1749-016 Lisboa</wicri:noRegion></affiliation></author></analytic><series><title level="j" type="main">Journal of proteomics : (Print)</title><idno type="ISSN">1874-3919</idno><imprint><date when="2011">2011</date></imprint></series></biblStruct></sourceDesc><seriesStmt><title level="j" type="main">Journal of proteomics : (Print)</title><idno type="ISSN">1874-3919</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Protein</term><term>Proteomics</term><term>Quercus suber</term><term>Tissue</term></keywords><keywords scheme="Pascal" xml:lang="fr"><term>Protéine</term><term>Quercus suber</term><term>Tissu</term><term>Protéomique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en">Cork (phellem) formation in Quercus suber stem was studied by proteomic analysis of young shoots of increasing age (Y0, Y1 and Y4) and recently-formed phellem (Y8Ph) and xylem (Y8X) from an 8-year-old branch. In this study 99 proteins were identified, 45 excised from Y8X and 54 from Y8Ph. These ones, specifically associated with phellem, are of "carbohydrate metabolism" (28%), "defence" (22%), "protein folding, stability and degradation" (19%), "regulation/ signalling" (11%), "secondary metabolism" (9%), "energy metabolism" (6%), and "membrane transport" (2%). The identification in phellem of galactosidases, xylosidases, apiose/xylose synthase, laccases and diphenol oxidases suggests intense cell wall reorganization, possibly with participation of hemicellulose/pectin biosynthesis and phenol oxidation. The identification of proteasome subunits, heat shock proteins, cyclophylin, subtilisin-like proteases, 14-3-3 proteins, Rab2 protein and enzymes interacting with nucleosides/nucleic acids gives additional evidence for cellular reorganization, involving cellular secretion, protein turnover regulation and active control processes. The high involvement in phellem of defence proteins (thioredoxin-dependent peroxidase, glutathione-S-transferase, SGT1 protein, cystatin, and chitinases) suggests a strong need for cell protection from the intense stressful events occurring in active phellem, namely, desiccation, pests/disease protection, detoxification and cell death. Identically, highly enhanced defence functions were previously reported for potato periderm formation.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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