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dc.contributor.author
Pereyra, Cintia Mariana
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dc.contributor.author
Rodriguez, Marianela Soledad
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dc.contributor.author
Martínez Noël, Giselle María Astrid
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dc.date.available
2021-05-06T18:07:21Z
dc.date.issued
2019
dc.identifier.citation
Different sugars excert not overlapping effects on the growth regulation of Arabidopsis Thaliana; Joint LV Annual SAIB Meeting and XIV PABMB Congress; Salta; Argentina; 2019; 137-137
dc.identifier.uri
http://hdl.handle.net/11336/131543
dc.description.abstract
Sugars are not only energy sources, but also important molecular signals that regulate growth, development, and response to environmental stresses. In plants, sucrose (Suc) is the main sugar for systemic transport and a specific signaling pathway for this disaccharide has been described. Although, the underpin sensor and mechanism are still unknown. Besides, it was proposed than Suc could be an antioxidant metabolite, especially when it is present at high concentrations, acting as ROS scavenger. On the other hand, glucose (Glc) is sensed through dependent and independent mechanisms of hexokinase. To gain insights into these subjects, we studied the effects of different sugars on the activation of root meristems (RAM) and redox homeostasis in Arabidopsis thaliana. The results showed that exogenous Suc and Glc differently induced the root growth, and fructose in a minor extent, depending on their concentrations. In contrast, trehalose (Tre) was not able to affect the root length. Besides, endogenous increment of Tre/Tre-P levels using a trehalase inhibitor, validamycin-A, did not induce the quiescent meristem. To test the putative protective role of sugars, we analyzed the effect of the different sugars on the inhibition of RAM produced by oxidative stress. The data indicated that only the addition of Suc could override the negative effect of methyl-viologen on root growth. Moreover, we measured the activity of Target Of Rapamycin (TOR), a master integrator of external and internal signals that regulates growth and development in eukaryotes. Results revealed differences on the kinase activity in seedlings grown with distinct sugars. In summary, we propose that sugars regulate growth differently, being their nature and concentration crucial for the effect, through a diverse action on ROS homeostasis. Supported by CONICET, ANPCyT (PICT2014-551, PICT2016-0173), UNMdP (EXA841/17, EXA947/19) and FIBA.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Instituto de Histología y Embriología
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
TOR KINASE
dc.subject
SUGARS
dc.subject
ROS
dc.subject.classification
Bioquímica y Biología Molecular
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dc.subject.classification
Ciencias Biológicas
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Different sugars excert not overlapping effects on the growth regulation of Arabidopsis Thaliana
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2021-04-27T13:35:29Z
dc.identifier.eissn
0327-9545
dc.journal.pagination
137-137
dc.journal.pais
Argentina
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dc.journal.ciudad
Buenos Aires
dc.description.fil
Fil: Pereyra, Cintia Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; Argentina
dc.description.fil
Fil: Rodriguez, Marianela Soledad. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Córdoba. Estación Experimental Agropecuaria Manfredi; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
dc.description.fil
Fil: Martínez Noël, Giselle María Astrid. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Biodiversidad y Biotecnología; Argentina
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://tesorerasaib.wixsite.com/pabmb-saib2019
dc.conicet.rol
Autor
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dc.conicet.rol
Autor
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dc.conicet.rol
Autor
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dc.coverage
Internacional
dc.type.subtype
Congreso
dc.description.nombreEvento
Joint LV Annual SAIB Meeting and XIV PABMB Congress
dc.date.evento
2019-11-05
dc.description.ciudadEvento
Salta
dc.description.paisEvento
Argentina
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dc.type.publicacion
Journal
dc.description.institucionOrganizadora
Sociedad Argentina en Bioquímica y Biología Molecular
dc.source.revista
Biocell
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dc.date.eventoHasta
2019-11-08
dc.type
Congreso
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