Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato
Pectin is a main component of the plant cell wall and is the most complex family of polysaccharides in nature. Its composition is essential for the normal growth and morphology pattern, as demonstrated by pectin-defective mutant phenotypes. Besides this basic role in plant physiology, in tomato, pec...
| Autores principales: | , , , , , , , , , , , , , |
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| Formato: | info:ar-repo/semantics/artículo |
| Lenguaje: | Inglés |
| Publicado: |
2017
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| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12123/1655 https://academic.oup.com/jxb/article-lookup/doi/10.1093/jxb/ert106 https://doi.org/10.1093/jxb/ert106 |
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| author | Godoy, Fabiana de Bermúdez, Luisa Lira, Bruno Silvestre Souza, Amanda Pereira de Elbl, Paula Demarco, Diego Alseekh, Saleh Insani, Ester Marina Buckeridge, Marcos Almeida, Juliana Grigioni, Gabriela Maria Fernie, Alisdair R. Carrari, Fernando Rossi, Magdalena |
| author_browse | Almeida, Juliana Alseekh, Saleh Bermúdez, Luisa Buckeridge, Marcos Carrari, Fernando Demarco, Diego Elbl, Paula Fernie, Alisdair R. Godoy, Fabiana de Grigioni, Gabriela Maria Insani, Ester Marina Lira, Bruno Silvestre Rossi, Magdalena Souza, Amanda Pereira de |
| author_facet | Godoy, Fabiana de Bermúdez, Luisa Lira, Bruno Silvestre Souza, Amanda Pereira de Elbl, Paula Demarco, Diego Alseekh, Saleh Insani, Ester Marina Buckeridge, Marcos Almeida, Juliana Grigioni, Gabriela Maria Fernie, Alisdair R. Carrari, Fernando Rossi, Magdalena |
| author_sort | Godoy, Fabiana de |
| collection | INTA Digital |
| description | Pectin is a main component of the plant cell wall and is the most complex family of polysaccharides in nature. Its composition is essential for the normal growth and morphology pattern, as demonstrated by pectin-defective mutant phenotypes. Besides this basic role in plant physiology, in tomato, pectin structure contributes to very important quality traits such as fruit firmness. Sixty-seven different enzymatic activities have been suggested to be required for pectin biosynthesis, but only a few genes have been identified and studied so far. This study characterized the tomato galacturonosyltransferase (GAUT) family and performed a detailed functional study of the GAUT4 gene. The tomato genome harbours all genes orthologous to those described previously in Arabidopsis thaliana, and a transcriptional profile revealed that the GAUT4 gene was expressed at higher levels in developing organs. GAUT4-silenced tomato plants exhibited an increment in vegetative biomass associated with palisade parenchyma enlargement. Silenced fruits showed an altered pectin composition and accumulated less starch along with a reduced amount of pectin, which coincided with an increase in firmness. Moreover, the harvest index was dramatically reduced as a consequence of the reduction in the fruit weight and number. Altogether, these results suggest that, beyond its role in pectin biosynthesis, GAUT4 interferes with carbon metabolism, partitioning, and allocation. Hence, this cell-wall-related gene seems to be key in determining plant growth and fruit production in tomato |
| format | info:ar-repo/semantics/artículo |
| id | INTA1655 |
| institution | Instituto Nacional de Tecnología Agropecuaria (INTA -Argentina) |
| language | Inglés |
| publishDate | 2017 |
| publishDateRange | 2017 |
| publishDateSort | 2017 |
| record_format | dspace |
| spelling | INTA16552019-01-24T17:24:31Z Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato Godoy, Fabiana de Bermúdez, Luisa Lira, Bruno Silvestre Souza, Amanda Pereira de Elbl, Paula Demarco, Diego Alseekh, Saleh Insani, Ester Marina Buckeridge, Marcos Almeida, Juliana Grigioni, Gabriela Maria Fernie, Alisdair R. Carrari, Fernando Rossi, Magdalena Tomate Pectinas Tomatoes Pectins Carbon Carbono Galacturonosyltransferase Pectin is a main component of the plant cell wall and is the most complex family of polysaccharides in nature. Its composition is essential for the normal growth and morphology pattern, as demonstrated by pectin-defective mutant phenotypes. Besides this basic role in plant physiology, in tomato, pectin structure contributes to very important quality traits such as fruit firmness. Sixty-seven different enzymatic activities have been suggested to be required for pectin biosynthesis, but only a few genes have been identified and studied so far. This study characterized the tomato galacturonosyltransferase (GAUT) family and performed a detailed functional study of the GAUT4 gene. The tomato genome harbours all genes orthologous to those described previously in Arabidopsis thaliana, and a transcriptional profile revealed that the GAUT4 gene was expressed at higher levels in developing organs. GAUT4-silenced tomato plants exhibited an increment in vegetative biomass associated with palisade parenchyma enlargement. Silenced fruits showed an altered pectin composition and accumulated less starch along with a reduced amount of pectin, which coincided with an increase in firmness. Moreover, the harvest index was dramatically reduced as a consequence of the reduction in the fruit weight and number. Altogether, these results suggest that, beyond its role in pectin biosynthesis, GAUT4 interferes with carbon metabolism, partitioning, and allocation. Hence, this cell-wall-related gene seems to be key in determining plant growth and fruit production in tomato Fil: Godoy, Fabiana de. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Bermúdez, Luisa. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Lira, Bruno Silvestre. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Souza, Amanda Pereira de. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Elbl, Paula. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Demarco, Diego. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Alseekh, Saleh. Max Planck Institute for Molecular Plant Physiology; Alemania Fil: Insani, Ester Marina. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina Fil: Buckeridge, Marcos. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Almeida, Juliana. Universidade de São Pablo. Departamento de Botânica; Brasil Fil: Grigioni, Gabriela Maria. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Tecnología de Alimentos; Argentina Fil: Fernie, Alisdair Robert. Max Planck Institute for Molecular Plant Physiology; Alemania Fil: Carrari, Fernando. Instituto Nacional de Tecnología Agropecuaria (INTA). Instituto de Biotecnología; Argentina Fil: Rossi, Magdalena. Universidade de São Pablo. Departamento de Botânica; Brasil 2017-11-02T13:04:18Z 2017-11-02T13:04:18Z 2013-04 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion http://hdl.handle.net/20.500.12123/1655 https://academic.oup.com/jxb/article-lookup/doi/10.1093/jxb/ert106 0022-0957 (Print) 1460-2431 (Online) https://doi.org/10.1093/jxb/ert106 eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) application/pdf Journal of Experimental Botany 64 (8) : 2449–2466 (May 2013) |
| spellingShingle | Tomate Pectinas Tomatoes Pectins Carbon Carbono Galacturonosyltransferase Godoy, Fabiana de Bermúdez, Luisa Lira, Bruno Silvestre Souza, Amanda Pereira de Elbl, Paula Demarco, Diego Alseekh, Saleh Insani, Ester Marina Buckeridge, Marcos Almeida, Juliana Grigioni, Gabriela Maria Fernie, Alisdair R. Carrari, Fernando Rossi, Magdalena Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| title | Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| title_full | Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| title_fullStr | Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| title_full_unstemmed | Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| title_short | Galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| title_sort | galacturonosyltransferase 4 silencing alters pectin composition and carbon partitioning in tomato |
| topic | Tomate Pectinas Tomatoes Pectins Carbon Carbono Galacturonosyltransferase |
| url | http://hdl.handle.net/20.500.12123/1655 https://academic.oup.com/jxb/article-lookup/doi/10.1093/jxb/ert106 https://doi.org/10.1093/jxb/ert106 |
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