Phytochrome kinase substrate1 regulates root phototropism and gravitropism

Light promotes the expression of PHYTOCHROME KINASE SUBSTRATE1 (PKS1) in the root of Arabidopsis thaliana, but the function of PKS1 in this organ is unknown. Unilateral blue light induced a negative root phototropic response mediated by phototropin 1 in wild-type seedlings. This response was absent...

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Authors: Boccalandro, Hernan Esteban, de Simone, Silvia, Bergmann-Honsberger, Ariane, Schepens, Isabelle, Fankhauser, Christian, Casal, Jorge José
Format: article
Status:Published version
Publication Date:2008
Country:Argentina
Institution:Consejo Nacional de Investigaciones Científicas y Técnicas
Repository:CONICET Digital (CONICET)
Language:English
OAI Identifier:oai:ri.conicet.gov.ar:11336/128700
Online Access:http://hdl.handle.net/11336/128700
Access Level:Open access
Keyword:https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
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network_acronym_str AR
network_name_str Argentina
repository_id_str
dc.title.none.fl_str_mv Phytochrome kinase substrate1 regulates root phototropism and gravitropism
title Phytochrome kinase substrate1 regulates root phototropism and gravitropism
spellingShingle Phytochrome kinase substrate1 regulates root phototropism and gravitropism
Boccalandro, Hernan Esteban
https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
title_short Phytochrome kinase substrate1 regulates root phototropism and gravitropism
title_full Phytochrome kinase substrate1 regulates root phototropism and gravitropism
title_fullStr Phytochrome kinase substrate1 regulates root phototropism and gravitropism
title_full_unstemmed Phytochrome kinase substrate1 regulates root phototropism and gravitropism
title_sort Phytochrome kinase substrate1 regulates root phototropism and gravitropism
dc.creator.none.fl_str_mv Boccalandro, Hernan Esteban
de Simone, Silvia
Bergmann-Honsberger, Ariane
Schepens, Isabelle
Fankhauser, Christian
Casal, Jorge José
author Boccalandro, Hernan Esteban
author_facet Boccalandro, Hernan Esteban
de Simone, Silvia
Bergmann-Honsberger, Ariane
Schepens, Isabelle
Fankhauser, Christian
Casal, Jorge José
author_role author
author2 de Simone, Silvia
Bergmann-Honsberger, Ariane
Schepens, Isabelle
Fankhauser, Christian
Casal, Jorge José
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
topic https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
description Light promotes the expression of PHYTOCHROME KINASE SUBSTRATE1 (PKS1) in the root of Arabidopsis thaliana, but the function of PKS1 in this organ is unknown. Unilateral blue light induced a negative root phototropic response mediated by phototropin 1 in wild-type seedlings. This response was absent in pks1 mutants. In the wild type, unilateral blue light enhanced PKS1 expression in the subapical region of the root several hours before bending was detectable. The negative phototropism and the enhanced PKS1 expression in response to blue light required phytochrome A (phyA). In addition, the pks1 mutation enhanced the root gravitropic response when vertically oriented seedlings were placed horizontally. The negative regulation of gravitropism by PKS1 occurred even in dark-grown seedlings and did not require phyA. Blue light also failed to induce negative phototropism in pks1 under reduced gravitational stimulation, indicating that the effect of pks1 on phototropism is not simply the consequence of the counteracting effect of enhanced gravitropism. We propose a model where the background level of PKS1 reduces gravitropism. After a phyA-dependent increase in its expression, PKS1 positively affects root phototropism and both effects contribute to negative curvature in response to unilateral blue light. © 2007 American Society of Plant Biologists.
publishDate 2008
dc.date.none.fl_str_mv 2008-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/128700
Boccalandro, Hernan Esteban; de Simone, Silvia; Bergmann-Honsberger, Ariane; Schepens, Isabelle; Fankhauser, Christian; et al.; Phytochrome kinase substrate1 regulates root phototropism and gravitropism; American Society of Plant Biologist; Plant Physiology; 146; 1; 1-2008; 108-115
0032-0889
CONICET Digital
CONICET
url http://hdl.handle.net/11336/128700
identifier_str_mv Boccalandro, Hernan Esteban; de Simone, Silvia; Bergmann-Honsberger, Ariane; Schepens, Isabelle; Fankhauser, Christian; et al.; Phytochrome kinase substrate1 regulates root phototropism and gravitropism; American Society of Plant Biologist; Plant Physiology; 146; 1; 1-2008; 108-115
0032-0889
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/doi/10.1104/pp.107.106468
info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/146/1/108
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society of Plant Biologist
publisher.none.fl_str_mv American Society of Plant Biologist
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1799194951963115520
spelling Phytochrome kinase substrate1 regulates root phototropism and gravitropismBoccalandro, Hernan Estebande Simone, SilviaBergmann-Honsberger, ArianeSchepens, IsabelleFankhauser, ChristianCasal, Jorge Joséhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Light promotes the expression of PHYTOCHROME KINASE SUBSTRATE1 (PKS1) in the root of Arabidopsis thaliana, but the function of PKS1 in this organ is unknown. Unilateral blue light induced a negative root phototropic response mediated by phototropin 1 in wild-type seedlings. This response was absent in pks1 mutants. In the wild type, unilateral blue light enhanced PKS1 expression in the subapical region of the root several hours before bending was detectable. The negative phototropism and the enhanced PKS1 expression in response to blue light required phytochrome A (phyA). In addition, the pks1 mutation enhanced the root gravitropic response when vertically oriented seedlings were placed horizontally. The negative regulation of gravitropism by PKS1 occurred even in dark-grown seedlings and did not require phyA. Blue light also failed to induce negative phototropism in pks1 under reduced gravitational stimulation, indicating that the effect of pks1 on phototropism is not simply the consequence of the counteracting effect of enhanced gravitropism. We propose a model where the background level of PKS1 reduces gravitropism. After a phyA-dependent increase in its expression, PKS1 positively affects root phototropism and both effects contribute to negative curvature in response to unilateral blue light. © 2007 American Society of Plant Biologists.Fil: Boccalandro, Hernan Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: de Simone, Silvia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaFil: Bergmann-Honsberger, Ariane. Universidad de Ginebra; SuizaFil: Schepens, Isabelle. Universite de Lausanne; SuizaFil: Fankhauser, Christian. Universite de Lausanne; SuizaFil: Casal, Jorge José. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura; ArgentinaAmerican Society of Plant Biologist2008-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/128700Boccalandro, Hernan Esteban; de Simone, Silvia; Bergmann-Honsberger, Ariane; Schepens, Isabelle; Fankhauser, Christian; et al.; Phytochrome kinase substrate1 regulates root phototropism and gravitropism; American Society of Plant Biologist; Plant Physiology; 146; 1; 1-2008; 108-1150032-0889CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/doi/10.1104/pp.107.106468info:eu-repo/semantics/altIdentifier/url/http://www.plantphysiol.org/content/146/1/108info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2024-05-08T13:39:49Zoai:ri.conicet.gov.ar:11336/128700instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982024-05-08 13:39:49.868CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
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