ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants

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Asr (for ABA, stress, ripening) genes are exclusively found in the genomes of higher plants, and the encoded proteins have been found localized both to the nucleus and cytoplasm. However, before the mechanisms underlying the activity of ASR proteins can be determined, the role of these proteins in p...

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Autores principales:	Dominguez, P.G., Frankel, N., Mazuch, J., Balbo, I., Iusem, N., Fernie, A.R., Carrari, F.
Formato:	JOUR
Materias:	abscisic acid carbon carrier protein gibberellic acid gibberellin glucose messenger RNA phytohormone vegetable protein article carbohydrate metabolism drug effect gene expression regulation gene silencing genetics metabolism phenotype photosynthesis plant leaf signal transduction tobacco transgenic plant transport at the cellular level Abscisic Acid Biological Transport Carbohydrate Metabolism Carbon Isotopes Gene Expression Regulation, Plant Gene Silencing Gibberellins Glucose Membrane Transport Proteins Phenotype Photosynthesis Plant Growth Regulators Plant Leaves Plant Proteins Plants, Genetically Modified RNA, Messenger Signal Transduction Tobacco
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00320889_v161_n3_p1486_Dominguez
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00320889_v161_n3_p1486_Dominguez
record_format	dspace
spelling	todo:paper_00320889_v161_n3_p1486_Dominguez2023-10-03T14:44:58Z ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants Dominguez, P.G. Frankel, N. Mazuch, J. Balbo, I. Iusem, N. Fernie, A.R. Carrari, F. abscisic acid carbon carrier protein gibberellic acid gibberellin glucose messenger RNA phytohormone vegetable protein article carbohydrate metabolism drug effect gene expression regulation gene silencing genetics metabolism phenotype photosynthesis plant leaf signal transduction tobacco transgenic plant transport at the cellular level Abscisic Acid Biological Transport Carbohydrate Metabolism Carbon Isotopes Gene Expression Regulation, Plant Gene Silencing Gibberellins Glucose Membrane Transport Proteins Phenotype Photosynthesis Plant Growth Regulators Plant Leaves Plant Proteins Plants, Genetically Modified RNA, Messenger Signal Transduction Tobacco Asr (for ABA, stress, ripening) genes are exclusively found in the genomes of higher plants, and the encoded proteins have been found localized both to the nucleus and cytoplasm. However, before the mechanisms underlying the activity of ASR proteins can be determined, the role of these proteins in planta should be deciphered. Results from this study suggest that ASR is positioned within the signaling cascade of interactions among glucose, abscisic acid, and gibberellins. Tobacco (Nicotiana tabacum) transgenic lines with reduced levels of ASR protein showed impaired glucose metabolism and altered abscisic acid and gibberellin levels. These changes were associated with dwarfism, reduced carbon dioxide assimilation, and accelerated leaf senescence as a consequence of a fine regulation exerted by ASR to the glucose metabolism. This regulation resulted in an impact on glucose signaling mediated by Hexokinase1 and Snf1-related kinase, which would subsequently have been responsible for photosynthesis, leaf senescence, and hormone level alterations. It thus can be postulated that ASR is not only involved in the control of hexose uptake in heterotrophic organs, as we have previously reported, but also in the control of carbon fixation by the leaves mediated by a similar mechanism. © 2013 American Society of Plant Biologists. All Rights Reserved. Fil:Frankel, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Iusem, N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Carrari, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00320889_v161_n3_p1486_Dominguez
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	abscisic acid carbon carrier protein gibberellic acid gibberellin glucose messenger RNA phytohormone vegetable protein article carbohydrate metabolism drug effect gene expression regulation gene silencing genetics metabolism phenotype photosynthesis plant leaf signal transduction tobacco transgenic plant transport at the cellular level Abscisic Acid Biological Transport Carbohydrate Metabolism Carbon Isotopes Gene Expression Regulation, Plant Gene Silencing Gibberellins Glucose Membrane Transport Proteins Phenotype Photosynthesis Plant Growth Regulators Plant Leaves Plant Proteins Plants, Genetically Modified RNA, Messenger Signal Transduction Tobacco
spellingShingle	abscisic acid carbon carrier protein gibberellic acid gibberellin glucose messenger RNA phytohormone vegetable protein article carbohydrate metabolism drug effect gene expression regulation gene silencing genetics metabolism phenotype photosynthesis plant leaf signal transduction tobacco transgenic plant transport at the cellular level Abscisic Acid Biological Transport Carbohydrate Metabolism Carbon Isotopes Gene Expression Regulation, Plant Gene Silencing Gibberellins Glucose Membrane Transport Proteins Phenotype Photosynthesis Plant Growth Regulators Plant Leaves Plant Proteins Plants, Genetically Modified RNA, Messenger Signal Transduction Tobacco Dominguez, P.G. Frankel, N. Mazuch, J. Balbo, I. Iusem, N. Fernie, A.R. Carrari, F. ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
topic_facet	abscisic acid carbon carrier protein gibberellic acid gibberellin glucose messenger RNA phytohormone vegetable protein article carbohydrate metabolism drug effect gene expression regulation gene silencing genetics metabolism phenotype photosynthesis plant leaf signal transduction tobacco transgenic plant transport at the cellular level Abscisic Acid Biological Transport Carbohydrate Metabolism Carbon Isotopes Gene Expression Regulation, Plant Gene Silencing Gibberellins Glucose Membrane Transport Proteins Phenotype Photosynthesis Plant Growth Regulators Plant Leaves Plant Proteins Plants, Genetically Modified RNA, Messenger Signal Transduction Tobacco
description	Asr (for ABA, stress, ripening) genes are exclusively found in the genomes of higher plants, and the encoded proteins have been found localized both to the nucleus and cytoplasm. However, before the mechanisms underlying the activity of ASR proteins can be determined, the role of these proteins in planta should be deciphered. Results from this study suggest that ASR is positioned within the signaling cascade of interactions among glucose, abscisic acid, and gibberellins. Tobacco (Nicotiana tabacum) transgenic lines with reduced levels of ASR protein showed impaired glucose metabolism and altered abscisic acid and gibberellin levels. These changes were associated with dwarfism, reduced carbon dioxide assimilation, and accelerated leaf senescence as a consequence of a fine regulation exerted by ASR to the glucose metabolism. This regulation resulted in an impact on glucose signaling mediated by Hexokinase1 and Snf1-related kinase, which would subsequently have been responsible for photosynthesis, leaf senescence, and hormone level alterations. It thus can be postulated that ASR is not only involved in the control of hexose uptake in heterotrophic organs, as we have previously reported, but also in the control of carbon fixation by the leaves mediated by a similar mechanism. © 2013 American Society of Plant Biologists. All Rights Reserved.
format	JOUR
author	Dominguez, P.G. Frankel, N. Mazuch, J. Balbo, I. Iusem, N. Fernie, A.R. Carrari, F.
author_facet	Dominguez, P.G. Frankel, N. Mazuch, J. Balbo, I. Iusem, N. Fernie, A.R. Carrari, F.
author_sort	Dominguez, P.G.
title	ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
title_short	ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
title_full	ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
title_fullStr	ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
title_full_unstemmed	ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
title_sort	asr1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants
url	http://hdl.handle.net/20.500.12110/paper_00320889_v161_n3_p1486_Dominguez
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ASR1 mediates glucose-hormone cross talk by affecting sugar trafficking in tobacco plants

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