ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds

ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds

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Fil: Tognacca, Rocío Soledad. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.

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Main Authors: Tognacca, Rocío Soledad, Carabelli, Mónica, Morelli, Giorgio, Ruberti, Ida, Botto, Javier Francisco
Format: article biblioteca
Language:eng
Subjects:GERMINATION, ARABIDOPSIS THALIANA,
Online Access:http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2021tognacca1
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spelling snrd:2021tognacca12023-02-10T10:19:05Z Tognacca, Rocío Soledad Carabelli, Mónica Morelli, Giorgio Ruberti, Ida Botto, Javier Francisco 2021 Fil: Tognacca, Rocío Soledad. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Fil: Tognacca, Rocío Soledad. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Fil: Tognacca, Rocío Soledad. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE). Buenos Aires, Argentina. Fil: Tognacca, Rocío Soledad. CONICET – Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE). Buenos Aires, Argentina. Fil: Carabelli, Mónica. National Research Council. Institute of Molecular Biology and Pathology. Rome, Italy. Fil: Morelli, Giorgio. Council for Agricultural Research and Economics (CREA). Research Centre for Genomics and Bioinformatics. Rome, Italy. Fil: Ruberti, Ida. National Research Council. Institute of Molecular Biology and Pathology. Rome, Italy. Fil: Botto, Javier Francisco. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. Fil: Botto, Javier Francisco. CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. The germination timing of seeds is of the utmost adaptive importance for plant populations. Light is one of the best characterized factors promoting seed germination in several species. The germination is also fnely regulated by changes in hormones levels, mainly those of gibberellin (GA) and abscisic acid (ABA). Here, we performed physiological, pharmacological, and molecular analyses to uncover the role of ATHB2, an HD-ZIP II transcription factor, in germination of Arabidopsis seeds. Our study demonstrated that ATHB2 is a negative regulator and sustains the expression of transcription factors to block germination promoted by light. Besides, we found that ATHB2 increases ABA sensitivity. Moreover, ABA and auxin content in athb2-2 mutant is higher than wild-type in dry seeds, but the diferences disappeared during the imbibition in darkness and the frst hours of exposition to light, respectively. Some ABA and light transcription factors are up-regulated by ATHB2, such as ABI5, ABI3, XERICO, SOMNUS and PIL5/PIF1. In opposition, PIN7, an auxin transport, is down-regulated. The role of ATHB2 as a repressor of germination induced by light afecting the gemination timing, could have diferential efects on the establishment of seedlings altering the competitiveness between crops and weeds in the feld. il., grafs. application/pdf 10.1038/s41598-021-88874-5 2045-2322 http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2021tognacca1 eng info:eu-repo/semantics/openAccess openAccess http://ri.agro.uba.ar/greenstone3/library/page/biblioteca#section4 Scientific Reports Vol.11 art.9688,13p. https://www.nature.com GERMINATION ARABIDOPSIS THALIANA ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds article info:eu-repo/semantics/article info:ar-repo/semantics/artículo publishedVersion info:eu-repo/semantics/publishedVersion
institution UBA
collection DSpace
country Argentina
countrycode AR
component Bibliográfico
access En linea
databasecode dig-ubafa
tag biblioteca
region America del Sur
libraryname Biblioteca Facultad de Agronomía
language eng
topic GERMINATION
ARABIDOPSIS THALIANA
GERMINATION
ARABIDOPSIS THALIANA
spellingShingle GERMINATION
ARABIDOPSIS THALIANA
GERMINATION
ARABIDOPSIS THALIANA
Tognacca, Rocío Soledad
Carabelli, Mónica
Morelli, Giorgio
Ruberti, Ida
Botto, Javier Francisco
ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds
description Fil: Tognacca, Rocío Soledad. Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.
format article
topic_facet GERMINATION
ARABIDOPSIS THALIANA
author Tognacca, Rocío Soledad
Carabelli, Mónica
Morelli, Giorgio
Ruberti, Ida
Botto, Javier Francisco
author_facet Tognacca, Rocío Soledad
Carabelli, Mónica
Morelli, Giorgio
Ruberti, Ida
Botto, Javier Francisco
author_sort Tognacca, Rocío Soledad
title ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds
title_short ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds
title_full ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds
title_fullStr ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds
title_full_unstemmed ATHB2 is a negative regulator of germination in Arabidopsis thaliana seeds
title_sort athb2 is a negative regulator of germination in arabidopsis thaliana seeds
url http://ri.agro.uba.ar/greenstone3/library/collection/arti/document/2021tognacca1
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AT carabellimonica athb2isanegativeregulatorofgerminationinarabidopsisthalianaseeds
AT morelligiorgio athb2isanegativeregulatorofgerminationinarabidopsisthalianaseeds
AT rubertiida athb2isanegativeregulatorofgerminationinarabidopsisthalianaseeds
AT bottojavierfrancisco athb2isanegativeregulatorofgerminationinarabidopsisthalianaseeds
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