Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds

Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds

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The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. By exposing imbibed Arabidopsis thaliana dormant seeds to two‐day temperature cycles previous of a red light pulse, we demonstrate that the germination mediated by phytochrome B requires the presence of functional PSEUDO‐RESPONSE REGULATOR 7 (PRR7) and TIMING OF CAB EXPRESSION 1 (TOC1) alleles. In addition, daily cycles of alternating temperatures in darkness reduce the protein levels of DELAY OF GERMINATION 1 (DOG1), allowing the expression of TOC1 to induce seed germination. Our results suggest a functional role for some components of the circadian clock related with the action of DOG1 for the integration of alternating temperatures and light signals in the relief of seed dormancy. The synchronization of germination by the synergic action of light and temperature through the activity of circadian clock might have ecological and adaptive consequences.

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Bibliographic Details
Main Authors: Arana, María Verónica, Tognacca, Rocío Soledad, Estravis Barcalá, Maximiliano, Sánchez, Rodolfo Augusto, Botto, Javier Francisco
Format: Texto biblioteca
Language:eng
Subjects:ALTERNATING TEMPERATURE, CIRCADIAN CLOCK, DOG1, SEED DORMANCY,
Online Access:http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45546
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spelling KOHA-OAI-AGRO:455462023-09-18T12:10:43Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45546http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGPhysiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seedsArana, María VerónicaTognacca, Rocío SoledadEstravis Barcalá, MaximilianoSánchez, Rodolfo AugustoBotto, Javier Franciscotextengapplication/pdfThe relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. By exposing imbibed Arabidopsis thaliana dormant seeds to two‐day temperature cycles previous of a red light pulse, we demonstrate that the germination mediated by phytochrome B requires the presence of functional PSEUDO‐RESPONSE REGULATOR 7 (PRR7) and TIMING OF CAB EXPRESSION 1 (TOC1) alleles. In addition, daily cycles of alternating temperatures in darkness reduce the protein levels of DELAY OF GERMINATION 1 (DOG1), allowing the expression of TOC1 to induce seed germination. Our results suggest a functional role for some components of the circadian clock related with the action of DOG1 for the integration of alternating temperatures and light signals in the relief of seed dormancy. The synchronization of germination by the synergic action of light and temperature through the activity of circadian clock might have ecological and adaptive consequences.The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. By exposing imbibed Arabidopsis thaliana dormant seeds to two‐day temperature cycles previous of a red light pulse, we demonstrate that the germination mediated by phytochrome B requires the presence of functional PSEUDO‐RESPONSE REGULATOR 7 (PRR7) and TIMING OF CAB EXPRESSION 1 (TOC1) alleles. In addition, daily cycles of alternating temperatures in darkness reduce the protein levels of DELAY OF GERMINATION 1 (DOG1), allowing the expression of TOC1 to induce seed germination. Our results suggest a functional role for some components of the circadian clock related with the action of DOG1 for the integration of alternating temperatures and light signals in the relief of seed dormancy. The synchronization of germination by the synergic action of light and temperature through the activity of circadian clock might have ecological and adaptive consequences.ALTERNATING TEMPERATURECIRCADIAN CLOCKDOG1SEED DORMANCYPlant, cell and environment
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic ALTERNATING TEMPERATURE
CIRCADIAN CLOCK
DOG1
SEED DORMANCY
ALTERNATING TEMPERATURE
CIRCADIAN CLOCK
DOG1
SEED DORMANCY
spellingShingle ALTERNATING TEMPERATURE
CIRCADIAN CLOCK
DOG1
SEED DORMANCY
ALTERNATING TEMPERATURE
CIRCADIAN CLOCK
DOG1
SEED DORMANCY
Arana, María Verónica
Tognacca, Rocío Soledad
Estravis Barcalá, Maximiliano
Sánchez, Rodolfo Augusto
Botto, Javier Francisco
Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
description The relief of dormancy and the promotion of seed germination are of extreme importance for a successful seedling establishment. Although alternating temperatures and light are signals promoting the relief of seed dormancy, the underlying mechanisms of their interaction in seeds are scarcely known. By exposing imbibed Arabidopsis thaliana dormant seeds to two‐day temperature cycles previous of a red light pulse, we demonstrate that the germination mediated by phytochrome B requires the presence of functional PSEUDO‐RESPONSE REGULATOR 7 (PRR7) and TIMING OF CAB EXPRESSION 1 (TOC1) alleles. In addition, daily cycles of alternating temperatures in darkness reduce the protein levels of DELAY OF GERMINATION 1 (DOG1), allowing the expression of TOC1 to induce seed germination. Our results suggest a functional role for some components of the circadian clock related with the action of DOG1 for the integration of alternating temperatures and light signals in the relief of seed dormancy. The synchronization of germination by the synergic action of light and temperature through the activity of circadian clock might have ecological and adaptive consequences.
format Texto
topic_facet ALTERNATING TEMPERATURE
CIRCADIAN CLOCK
DOG1
SEED DORMANCY
author Arana, María Verónica
Tognacca, Rocío Soledad
Estravis Barcalá, Maximiliano
Sánchez, Rodolfo Augusto
Botto, Javier Francisco
author_facet Arana, María Verónica
Tognacca, Rocío Soledad
Estravis Barcalá, Maximiliano
Sánchez, Rodolfo Augusto
Botto, Javier Francisco
author_sort Arana, María Verónica
title Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
title_short Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
title_full Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
title_fullStr Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
title_full_unstemmed Physiological and molecular mechanisms underlying the integration of light and temperature cues in Arabidopsis thaliana seeds
title_sort physiological and molecular mechanisms underlying the integration of light and temperature cues in arabidopsis thaliana seeds
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45546
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=
work_keys_str_mv AT aranamariaveronica physiologicalandmolecularmechanismsunderlyingtheintegrationoflightandtemperaturecuesinarabidopsisthalianaseeds
AT tognaccarociosoledad physiologicalandmolecularmechanismsunderlyingtheintegrationoflightandtemperaturecuesinarabidopsisthalianaseeds
AT estravisbarcalamaximiliano physiologicalandmolecularmechanismsunderlyingtheintegrationoflightandtemperaturecuesinarabidopsisthalianaseeds
AT sanchezrodolfoaugusto physiologicalandmolecularmechanismsunderlyingtheintegrationoflightandtemperaturecuesinarabidopsisthalianaseeds
AT bottojavierfrancisco physiologicalandmolecularmechanismsunderlyingtheintegrationoflightandtemperaturecuesinarabidopsisthalianaseeds
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