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dc.contributor.author
Paris, Ramiro
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dc.contributor.author
Vazquez, María M.
dc.contributor.author
Graziano, Magdalena
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dc.contributor.author
Terrile, Maria Cecilia
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dc.contributor.author
Miller, Nathan D.
dc.contributor.author
Spalding, Edgar P.
dc.contributor.author
Otegui, Marisa S.
dc.contributor.author
Casalongue, Claudia
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dc.date.available
2019-11-06T18:55:15Z
dc.date.issued
2018-04-20
dc.identifier.citation
Paris, Ramiro; Vazquez, María M.; Graziano, Magdalena; Terrile, Maria Cecilia; Miller, Nathan D.; et al.; Distribution of endogenous NO regulates early gravitropic response and PIN2 localization in arabidopsis roots; Frontiers Media S.A.; Frontiers in Plant Science; 9; 20-4-2018; 1-11
dc.identifier.issn
1664-462X
dc.identifier.uri
http://hdl.handle.net/11336/88112
dc.description.abstract
High-resolution and automated image analysis of individual roots demonstrated that endogenous nitric oxide (NO) contribute significantly to gravitropism of Arabidopsis roots. Lowering of endogenous NO concentrations strongly reduced and even reversed gravitropism, resulting in upward bending, without affecting root growth rate. Notably, the asymmetric accumulation of NOalong the upper and lower sides of roots correlated with a positive gravitropic response. Detection of NO by the specific DAF-FM DA fluorescent probe revealed that NO was higher at the lower side of horizontally-oriented roots returning to initial values 2h after the onset of gravistimulation. We demonstrate that NO promotes plasma membrane re-localization of PIN2 in epidermal cells, which is required during the early root gravitropic response. The dynamic and asymmetric localization of both auxin and NO is critical to regulate auxin polar transport during gravitropism. Our results collectively suggest that, although auxin and NO crosstalk occurs at different levels of regulation, they converge in the regulation of PIN2 membrane trafficking in gravistimulated roots, supporting the notion that a temporally and spatially coordinated network of signal molecules could participate in the early phases of auxin polar transport during gravitropism.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Frontiers Media S.A.
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Arabidopsis
dc.subject
Auxin
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Auxin transport
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Gravitropism
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Nitric oxide
dc.subject
Root
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Tropic response
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
Distribution of endogenous NO regulates early gravitropic response and PIN2 localization in arabidopsis roots
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-22T15:50:02Z
dc.journal.volume
9
dc.journal.pagination
1-11
dc.journal.pais
Suiza
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dc.description.fil
Fil: Paris, Ramiro. Universidad Nacional de Mar del Plata; Argentina
dc.description.fil
Fil: Vazquez, María M.. Universidad Nacional de Mar del Plata; Argentina
dc.description.fil
Fil: Graziano, Magdalena. Universidad Nacional de Mar del Plata; Argentina
dc.description.fil
Fil: Terrile, Maria Cecilia. Universidad Nacional de Mar del Plata; Argentina
dc.description.fil
Fil: Miller, Nathan D.. University Of Wisconsin-madison; Estados Unidos
dc.description.fil
Fil: Spalding, Edgar P.. University Of Wisconsin-madison; Estados Unidos
dc.description.fil
Fil: Otegui, Marisa S.. University Of Wisconsin-madison;
dc.description.fil
Fil: Casalongue, Claudia. Universidad Nacional de Mar del Plata; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones Biológicas. Universidad Nacional de Mar del Plata. Facultad de Ciencias Exactas y Naturales. Instituto de Investigaciones Biológicas; Argentina
dc.journal.title
Frontiers in Plant Science
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://journal.frontiersin.org/article/10.3389/fpls.2018.00495/full
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.3389/fpls.2018.00495
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