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dc.contributor.author
van der Merwe, Margaretha J.  
dc.contributor.author
Osorio, Sonia  
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Araújo, Wagner L.  
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Balbo, Ilse  
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Nunes Nesi, Adriano  
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Maximova, Eugenia  
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Carrari, Fernando Oscar  
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Bunik, Victoria I.  
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Persson, Staffan  
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Fernie, Alisdair R.  
dc.date.available
2023-02-28T15:55:35Z  
dc.date.issued
2010-06  
dc.identifier.citation
van der Merwe, Margaretha J.; Osorio, Sonia; Araújo, Wagner L.; Balbo, Ilse; Nunes Nesi, Adriano; et al.; Tricarboxylic acid cycle activity regulates tomato root growth via effects on secondary cell wall production; American Society of Plant Biologist; Plant Physiology; 153; 2; 6-2010; 611-621  
dc.identifier.issn
0032-0889  
dc.identifier.uri
http://hdl.handle.net/11336/189132  
dc.description.abstract
Transgenic tomato (Solanum lycopersicum 'Moneymaker') plants independently expressing fragments of various genes encoding enzymes of the tricarboxylic acid cycle in antisense orientation have previously been characterized as exhibiting altered root growth. In this study, we evaluate the rates of respiration of roots from these lines in addition to determining their total dry weight accumulation. Given that these features were highly correlated, we decided to carry out an evaluation of the cell wall composition in the transformants that revealed a substantial reduction in cellulose. Since the bulk of cellulose is associated with the secondary cell walls in roots, we reasoned that the transformants most likely were deficient in secondary wall cellulose production. Consistent with these findings, cross-sections of the root collar (approximately 15 mm from the junction between root and stem) displayed reduced lignified secondary cell walls for the transformants. In contrast, cell and cell wall patterning displayed no differences in elongating cells close to the root tip. To further characterize the modified cell wall metabolism, we performed feeding experiments in which we incubated excised root tips in [U-14C]glucose in the presence or absence of phosphonate inhibitors of the reaction catalyzed by 2-oxoglutarate dehydrogenase. Taken together, the combined results suggest that restriction of root respiration leads to a deficit in secondary cell wall synthesis. These data are discussed in the context of current models of biomass partitioning and plant growth.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
American Society of Plant Biologist  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
METABOLISM  
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ROOT GROWTH  
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TOMATO  
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Biología Celular, Microbiología  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Tricarboxylic acid cycle activity regulates tomato root growth via effects on secondary cell wall production  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-02-16T13:35:59Z  
dc.journal.volume
153  
dc.journal.number
2  
dc.journal.pagination
611-621  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Rockville  
dc.description.fil
Fil: van der Merwe, Margaretha J.. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
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Fil: Osorio, Sonia. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.description.fil
Fil: Araújo, Wagner L.. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
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Fil: Balbo, Ilse. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
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Fil: Nunes Nesi, Adriano. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.description.fil
Fil: Maximova, Eugenia. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.description.fil
Fil: Carrari, Fernando Oscar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.description.fil
Fil: Bunik, Victoria I.. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.description.fil
Fil: Persson, Staffan. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.description.fil
Fil: Fernie, Alisdair R.. Max-Planck-Institut für Molekulare Pflanzenphysiologie; Alemania. Moscow State University; Rusia  
dc.journal.title
Plant Physiology  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/plphys/article/153/2/611/6109561  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1104/pp.109.149047