The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering

The Arabidopsis thaliana early in short days6 (esd6) mutant was isolated in a screen for mutations that accelerate flowering time. Among other developmental alterations, esd6 displays early flowering in both long- and short-day conditions. Fine mapping of the mutation showed that the esd6 phenotype...

Descripción completa

Detalles Bibliográficos
Autores: Valverde Albacete, Federico, Lázaro, Ana, Piñeiro, Manuel, Jarillo, José Antonio
Tipo de recurso: artículo
Estado:Versión enviada para evaluación y publicación
Fecha de publicación:2016
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/68844
Acceso en línea:http://hdl.handle.net/11441/68844
https://doi.org/10.1105/tpc.110.081885
Access Level:acceso abierto
Palabra clave:HOS1 E3 ubiquitin ligase
CONSTANS
Flowering time
Floral repression
Arabidopsis
id ES_9a821e211af2d88916e8614efead2c8a
oai_identifier_str oai:idus.us.es:11441/68844
network_acronym_str ES
network_name_str España
repository_id_str
spelling The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of FloweringValverde Albacete, FedericoLázaro, AnaPiñeiro, ManuelJarillo, José AntonioHOS1 E3 ubiquitin ligaseCONSTANSFlowering timeFloral repressionArabidopsisThe Arabidopsis thaliana early in short days6 (esd6) mutant was isolated in a screen for mutations that accelerate flowering time. Among other developmental alterations, esd6 displays early flowering in both long- and short-day conditions. Fine mapping of the mutation showed that the esd6 phenotype is caused by a lesion in the HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES1 (HOS1) locus, which encodes a RING finger–containing E3 ubiquitin ligase. The esd6/hos1 mutation causes decreased FLOWERING LOCUS C expression and requires CONSTANS (CO) protein for its early flowering phenotype under long days. Moreover, CO and HOS1 physically interact in vitro and in planta, and HOS1 regulates CO abundance, particularly during the daylight period. Accordingly, hos1 causes a shift in the regular long-day pattern of expression of FLOWERING LOCUS T (FT) transcript, starting to rise 4 h after dawn in the mutant. In addition, HOS1 interacts synergistically with CONSTITUTIVE PHOTOMORPHOGENIC1, another regulator of CO protein stability, in the regulation of flowering time. Taken together, these results indicate that HOS1 is involved in the control of CO abundance, ensuring that CO activation of FT occurs only when the light period reaches a certain length and preventing precocious flowering in Arabidopsis.American Society of Plant BiologistsBioquímica Vegetal y Biología Molecular2016info:eu-repo/semantics/articleinfo:eu-repo/semantics/submittedVersionapplication/pdfapplication/pdfhttp://hdl.handle.net/11441/68844https://doi.org/10.1105/tpc.110.081885reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésPlant Cell, 24 (3), 982-999.http://dx.doi.org/10.1105/tpc.110.081885info:eu-repo/semantics/openAccessoai:idus.us.es:11441/688442026-06-17T12:51:07Z
dc.title.none.fl_str_mv The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
title The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
spellingShingle The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
Valverde Albacete, Federico
HOS1 E3 ubiquitin ligase
CONSTANS
Flowering time
Floral repression
Arabidopsis
title_short The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
title_full The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
title_fullStr The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
title_full_unstemmed The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
title_sort The Arabidopsis E3 Ubiquitin Ligase HOS1 Negatively Regulates CONSTANS Abundance in the Photoperiodic Control of Flowering
dc.creator.none.fl_str_mv Valverde Albacete, Federico
Lázaro, Ana
Piñeiro, Manuel
Jarillo, José Antonio
author Valverde Albacete, Federico
author_facet Valverde Albacete, Federico
Lázaro, Ana
Piñeiro, Manuel
Jarillo, José Antonio
author_role author
author2 Lázaro, Ana
Piñeiro, Manuel
Jarillo, José Antonio
author2_role author
author
author
dc.contributor.none.fl_str_mv Bioquímica Vegetal y Biología Molecular
dc.subject.none.fl_str_mv HOS1 E3 ubiquitin ligase
CONSTANS
Flowering time
Floral repression
Arabidopsis
topic HOS1 E3 ubiquitin ligase
CONSTANS
Flowering time
Floral repression
Arabidopsis
description The Arabidopsis thaliana early in short days6 (esd6) mutant was isolated in a screen for mutations that accelerate flowering time. Among other developmental alterations, esd6 displays early flowering in both long- and short-day conditions. Fine mapping of the mutation showed that the esd6 phenotype is caused by a lesion in the HIGH EXPRESSION OF OSMOTICALLY RESPONSIVE GENES1 (HOS1) locus, which encodes a RING finger–containing E3 ubiquitin ligase. The esd6/hos1 mutation causes decreased FLOWERING LOCUS C expression and requires CONSTANS (CO) protein for its early flowering phenotype under long days. Moreover, CO and HOS1 physically interact in vitro and in planta, and HOS1 regulates CO abundance, particularly during the daylight period. Accordingly, hos1 causes a shift in the regular long-day pattern of expression of FLOWERING LOCUS T (FT) transcript, starting to rise 4 h after dawn in the mutant. In addition, HOS1 interacts synergistically with CONSTITUTIVE PHOTOMORPHOGENIC1, another regulator of CO protein stability, in the regulation of flowering time. Taken together, these results indicate that HOS1 is involved in the control of CO abundance, ensuring that CO activation of FT occurs only when the light period reaches a certain length and preventing precocious flowering in Arabidopsis.
publishDate 2016
dc.date.none.fl_str_mv 2016
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/submittedVersion
format article
status_str submittedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11441/68844
https://doi.org/10.1105/tpc.110.081885
url http://hdl.handle.net/11441/68844
https://doi.org/10.1105/tpc.110.081885
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Plant Cell, 24 (3), 982-999.
http://dx.doi.org/10.1105/tpc.110.081885
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Society of Plant Biologists
publisher.none.fl_str_mv American Society of Plant Biologists
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869414409981394944
score 15,300724

Similares en LA Referencia