MicroRNA miR396 and RDR6 synergistically regulate leaf development

Autores
Mecchia, Martin Alejandro; Debernardi, Juan Manuel; Rodriguez Virasoro, Ramiro Esteban; Schommer, Carla; Palatnik, Javier Fernando
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The miroRNA (miRNA) miR396 regulates Growth-Regulating Factors (GRFs), a plant specific family of transcription factors. Overexpression of miR396 causes a decrease in the GRFs that has been shown to affect cell proliferation in the meristem and developing leaves. To bring further insights into the function of the miR396 regulatory network we performed a mutant enhancer screen of a stable Arabidopsis transgenic line expressing 35S:miR396b, which has a reduction in leaf size. From this screen we recovered several mutants enhancing this phenotype and displaying organs with lotus- or needle-like shape. Analysis of these plants revealed mutations in as2 and rdr6. While 35S:miR396b in an as2 context generated organs with lotus-like shape, the overexpression of the miRNA in an rdr6 mutant background caused more important developmental defects, including pin-like organs and lobed leaves. Combination of miR396 overexpressors, and rdr6 and as2 mutants show additional organ defects, suggesting that the three pathways act in concert. Genetic interactions during leaf development were observed in a similar way between miR396 overexpression and mutants in RDR6, SGS3 or AGO7, which are known to participate in trans-acting siRNA (ta-siRNA) biogenesis. Furthermore, we found that miR396 can cause lotus- and pin-like organs per se, once a certain expression threshold is overcome. In good agreement, mutants accumulating high levels of TCP4, which induces miR396, interacted with the AS1/AS2 pathway to generate lotus-like organs. The results indicate that the miR396 regulatory network and the ta-siRNA biogenesis pathway synergistically interact during leaf development and morphogenesis.
Fil: Mecchia, Martin Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Debernardi, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Rodriguez Virasoro, Ramiro Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Schommer, Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Palatnik, Javier Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Materia
Microrna
Mir396
Rdr6
Ta-Sirna
Grf
Tcp
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/4862
Acceder
id CONICETDig_2e03086fd75863235f10f4ef45b77f68
oai_identifier_str oai:ri.conicet.gov.ar:11336/4862
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling MicroRNA miR396 and RDR6 synergistically regulate leaf developmentMecchia, Martin AlejandroDebernardi, Juan ManuelRodriguez Virasoro, Ramiro EstebanSchommer, CarlaPalatnik, Javier FernandoMicrornaMir396Rdr6Ta-SirnaGrfTcphttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The miroRNA (miRNA) miR396 regulates Growth-Regulating Factors (GRFs), a plant specific family of transcription factors. Overexpression of miR396 causes a decrease in the GRFs that has been shown to affect cell proliferation in the meristem and developing leaves. To bring further insights into the function of the miR396 regulatory network we performed a mutant enhancer screen of a stable Arabidopsis transgenic line expressing 35S:miR396b, which has a reduction in leaf size. From this screen we recovered several mutants enhancing this phenotype and displaying organs with lotus- or needle-like shape. Analysis of these plants revealed mutations in as2 and rdr6. While 35S:miR396b in an as2 context generated organs with lotus-like shape, the overexpression of the miRNA in an rdr6 mutant background caused more important developmental defects, including pin-like organs and lobed leaves. Combination of miR396 overexpressors, and rdr6 and as2 mutants show additional organ defects, suggesting that the three pathways act in concert. Genetic interactions during leaf development were observed in a similar way between miR396 overexpression and mutants in RDR6, SGS3 or AGO7, which are known to participate in trans-acting siRNA (ta-siRNA) biogenesis. Furthermore, we found that miR396 can cause lotus- and pin-like organs per se, once a certain expression threshold is overcome. In good agreement, mutants accumulating high levels of TCP4, which induces miR396, interacted with the AS1/AS2 pathway to generate lotus-like organs. The results indicate that the miR396 regulatory network and the ta-siRNA biogenesis pathway synergistically interact during leaf development and morphogenesis.Fil: Mecchia, Martin Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Debernardi, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Rodriguez Virasoro, Ramiro Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Schommer, Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; ArgentinaFil: Palatnik, Javier Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; ArgentinaElsevier2013-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/4862Mecchia, Martin Alejandro; Debernardi, Juan Manuel; Rodriguez Virasoro, Ramiro Esteban; Schommer, Carla; Palatnik, Javier Fernando; MicroRNA miR396 and RDR6 synergistically regulate leaf development; Elsevier; Mechanisms of Development; 113; 1; 1-2013; 2-130925-4773enginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0925477312000810info:eu-repo/semantics/altIdentifier/doi/info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mod.2012.07.005info:eu-repo/semantics/altIdentifier/pmid/22889666info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T14:26:56Zoai:ri.conicet.gov.ar:11336/4862instacron: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:34982025-10-15 14:26:57.119CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv MicroRNA miR396 and RDR6 synergistically regulate leaf development
title MicroRNA miR396 and RDR6 synergistically regulate leaf development
spellingShingle MicroRNA miR396 and RDR6 synergistically regulate leaf development
Mecchia, Martin Alejandro
Microrna
Mir396
Rdr6
Ta-Sirna
Grf
Tcp
title_short MicroRNA miR396 and RDR6 synergistically regulate leaf development
title_full MicroRNA miR396 and RDR6 synergistically regulate leaf development
title_fullStr MicroRNA miR396 and RDR6 synergistically regulate leaf development
title_full_unstemmed MicroRNA miR396 and RDR6 synergistically regulate leaf development
title_sort MicroRNA miR396 and RDR6 synergistically regulate leaf development
dc.creator.none.fl_str_mv Mecchia, Martin Alejandro
Debernardi, Juan Manuel
Rodriguez Virasoro, Ramiro Esteban
Schommer, Carla
Palatnik, Javier Fernando
author Mecchia, Martin Alejandro
author_facet Mecchia, Martin Alejandro
Debernardi, Juan Manuel
Rodriguez Virasoro, Ramiro Esteban
Schommer, Carla
Palatnik, Javier Fernando
author_role author
author2 Debernardi, Juan Manuel
Rodriguez Virasoro, Ramiro Esteban
Schommer, Carla
Palatnik, Javier Fernando
author2_role author
author
author
author
dc.subject.none.fl_str_mv Microrna
Mir396
Rdr6
Ta-Sirna
Grf
Tcp
topic Microrna
Mir396
Rdr6
Ta-Sirna
Grf
Tcp
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The miroRNA (miRNA) miR396 regulates Growth-Regulating Factors (GRFs), a plant specific family of transcription factors. Overexpression of miR396 causes a decrease in the GRFs that has been shown to affect cell proliferation in the meristem and developing leaves. To bring further insights into the function of the miR396 regulatory network we performed a mutant enhancer screen of a stable Arabidopsis transgenic line expressing 35S:miR396b, which has a reduction in leaf size. From this screen we recovered several mutants enhancing this phenotype and displaying organs with lotus- or needle-like shape. Analysis of these plants revealed mutations in as2 and rdr6. While 35S:miR396b in an as2 context generated organs with lotus-like shape, the overexpression of the miRNA in an rdr6 mutant background caused more important developmental defects, including pin-like organs and lobed leaves. Combination of miR396 overexpressors, and rdr6 and as2 mutants show additional organ defects, suggesting that the three pathways act in concert. Genetic interactions during leaf development were observed in a similar way between miR396 overexpression and mutants in RDR6, SGS3 or AGO7, which are known to participate in trans-acting siRNA (ta-siRNA) biogenesis. Furthermore, we found that miR396 can cause lotus- and pin-like organs per se, once a certain expression threshold is overcome. In good agreement, mutants accumulating high levels of TCP4, which induces miR396, interacted with the AS1/AS2 pathway to generate lotus-like organs. The results indicate that the miR396 regulatory network and the ta-siRNA biogenesis pathway synergistically interact during leaf development and morphogenesis.
Fil: Mecchia, Martin Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Debernardi, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Rodriguez Virasoro, Ramiro Esteban. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Schommer, Carla. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
Fil: Palatnik, Javier Fernando. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Rosario. Instituto de Biología Molecular y Celular de Rosario; Argentina
description The miroRNA (miRNA) miR396 regulates Growth-Regulating Factors (GRFs), a plant specific family of transcription factors. Overexpression of miR396 causes a decrease in the GRFs that has been shown to affect cell proliferation in the meristem and developing leaves. To bring further insights into the function of the miR396 regulatory network we performed a mutant enhancer screen of a stable Arabidopsis transgenic line expressing 35S:miR396b, which has a reduction in leaf size. From this screen we recovered several mutants enhancing this phenotype and displaying organs with lotus- or needle-like shape. Analysis of these plants revealed mutations in as2 and rdr6. While 35S:miR396b in an as2 context generated organs with lotus-like shape, the overexpression of the miRNA in an rdr6 mutant background caused more important developmental defects, including pin-like organs and lobed leaves. Combination of miR396 overexpressors, and rdr6 and as2 mutants show additional organ defects, suggesting that the three pathways act in concert. Genetic interactions during leaf development were observed in a similar way between miR396 overexpression and mutants in RDR6, SGS3 or AGO7, which are known to participate in trans-acting siRNA (ta-siRNA) biogenesis. Furthermore, we found that miR396 can cause lotus- and pin-like organs per se, once a certain expression threshold is overcome. In good agreement, mutants accumulating high levels of TCP4, which induces miR396, interacted with the AS1/AS2 pathway to generate lotus-like organs. The results indicate that the miR396 regulatory network and the ta-siRNA biogenesis pathway synergistically interact during leaf development and morphogenesis.
publishDate 2013
dc.date.none.fl_str_mv 2013-01
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/11336/4862
Mecchia, Martin Alejandro; Debernardi, Juan Manuel; Rodriguez Virasoro, Ramiro Esteban; Schommer, Carla; Palatnik, Javier Fernando; MicroRNA miR396 and RDR6 synergistically regulate leaf development; Elsevier; Mechanisms of Development; 113; 1; 1-2013; 2-13
0925-4773
url http://hdl.handle.net/11336/4862
identifier_str_mv Mecchia, Martin Alejandro; Debernardi, Juan Manuel; Rodriguez Virasoro, Ramiro Esteban; Schommer, Carla; Palatnik, Javier Fernando; MicroRNA miR396 and RDR6 synergistically regulate leaf development; Elsevier; Mechanisms of Development; 113; 1; 1-2013; 2-13
0925-4773
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0925477312000810
info:eu-repo/semantics/altIdentifier/doi/
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.mod.2012.07.005
info:eu-repo/semantics/altIdentifier/pmid/22889666
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
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
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