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EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth

Plants have the capacity to adapt growth to changing environmental conditions. This implies the modulation of metabolism according to the availability of carbon (C). Particular interest in the response to the C availability is based on the increasing atmospheric levels of CO(2). Several regulatory p...

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Autores principales: Lisso, Janina, Schröder, Florian, Müssig, Carsten
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2013
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3691544/
https://www.ncbi.nlm.nih.gov/pubmed/23805150
http://dx.doi.org/10.3389/fpls.2013.00219
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author Lisso, Janina
Schröder, Florian
Müssig, Carsten
author_facet Lisso, Janina
Schröder, Florian
Müssig, Carsten
author_sort Lisso, Janina
collection PubMed
description Plants have the capacity to adapt growth to changing environmental conditions. This implies the modulation of metabolism according to the availability of carbon (C). Particular interest in the response to the C availability is based on the increasing atmospheric levels of CO(2). Several regulatory pathways that link the C status to growth have emerged. The extracellular EXO protein is essential for cell expansion and promotes shoot and root growth. Homologous proteins were identified in evolutionarily distant green plants. We show here that the EXO protein connects growth with C responses. The exo mutant displayed altered responses to exogenous sucrose supplemented to the growth medium. Impaired growth of the mutant in synthetic medium was associated with the accumulation of starch and anthocyanins, altered expression of sugar-responsive genes, and increased abscisic acid levels. Thus, EXO modulates several responses related to the C availability. Growth retardation on medium supplemented with 2-deoxy-glucose, mannose, and palatinose was similar to the wild type. Trehalose feeding stimulated root growth and shoot biomass production of exo plants whereas it inhibited growth of the wild type. The phenotypic features of the exo mutant suggest that apoplastic processes coordinate growth and C responses.
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spelling pubmed-36915442013-06-26 EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth Lisso, Janina Schröder, Florian Müssig, Carsten Front Plant Sci Plant Science Plants have the capacity to adapt growth to changing environmental conditions. This implies the modulation of metabolism according to the availability of carbon (C). Particular interest in the response to the C availability is based on the increasing atmospheric levels of CO(2). Several regulatory pathways that link the C status to growth have emerged. The extracellular EXO protein is essential for cell expansion and promotes shoot and root growth. Homologous proteins were identified in evolutionarily distant green plants. We show here that the EXO protein connects growth with C responses. The exo mutant displayed altered responses to exogenous sucrose supplemented to the growth medium. Impaired growth of the mutant in synthetic medium was associated with the accumulation of starch and anthocyanins, altered expression of sugar-responsive genes, and increased abscisic acid levels. Thus, EXO modulates several responses related to the C availability. Growth retardation on medium supplemented with 2-deoxy-glucose, mannose, and palatinose was similar to the wild type. Trehalose feeding stimulated root growth and shoot biomass production of exo plants whereas it inhibited growth of the wild type. The phenotypic features of the exo mutant suggest that apoplastic processes coordinate growth and C responses. Frontiers Media S.A. 2013-06-25 /pmc/articles/PMC3691544/ /pubmed/23805150 http://dx.doi.org/10.3389/fpls.2013.00219 Text en Copyright © 2013 Lisso, Schröder and Müssig. http://creativecommons.org/licenses/by/3.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.
spellingShingle Plant Science
Lisso, Janina
Schröder, Florian
Müssig, Carsten
EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
title EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
title_full EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
title_fullStr EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
title_full_unstemmed EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
title_short EXO modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
title_sort exo modifies sucrose and trehalose responses and connects the extracellular carbon status to growth
topic Plant Science
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3691544/
https://www.ncbi.nlm.nih.gov/pubmed/23805150
http://dx.doi.org/10.3389/fpls.2013.00219
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