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dc.contributor.author
Trupkin, Santiago Ariel  
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Auge, Gabriela Alejandra  
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Zhu, Jian Kang  
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Sanchez, Rodolfo Augusto  
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Botto, Javier Francisco  
dc.date.available
2023-01-24T14:27:22Z  
dc.date.issued
2017-05  
dc.identifier.citation
Trupkin, Santiago Ariel; Auge, Gabriela Alejandra; Zhu, Jian Kang; Sanchez, Rodolfo Augusto; Botto, Javier Francisco; Salt-Overly Sensitive 2 (SOS2) and interacting partners SOS3 and ABI2 promote red-light dependent germination and seedling de-etiolation in Arabidospsis; University of Chicago Press; International Journal of Plant Sciences; 178; 6; 5-2017; 485-493  
dc.identifier.issn
1058-5893  
dc.identifier.uri
http://hdl.handle.net/11336/185419  
dc.description.abstract
Premise of research. Plants cope with complex environments throughout their life cycles. The perception and integration of information acquired from different environmental parameters are key to responding appropriately and securing plant survival. In Arabidopsis thaliana, SALT OVERLY SENSITIVE 2 (SOS2) and SOS3, its protein-interacting partner, have been described as central players in salt-stress responses, while another SOS2-interacting partner, ABSCISIC ACID (ABA)–INSENSITIVE 2 (ABI2), is involved in ABA signaling. SOS2 was also suggested to be involved in the photocontrol of seed germination, although its function in photomorphogenesis is not fully understood. Here we studied the role played by SOS2, SOS3, and ABI2 in light-dependent responses in Arabidopsis mutants. We assessed whether SOS2, SOS3, and ABI2 modulate light- and hormone-regulated seed germination and seedling deetiolation. Methodology. We examined physiological responses in wild-type and SOS2, SOS3, and ABI2 knockout mutants of A. thaliana exposed to red light and explored whether these proteins modulate germination (by changing hormone sensitivity) and seedling deetiolation. In addition, we analyzed the presence of cis-regulatory elements (CREs) in their promoters and expression profiles from public microarrays to confirm their function in photomorphogenesis. Pivotal results. Germination experiments demonstrate that SOS2, SOS3, and ABI2 are positive regulators of germination induced by red light. Differences in germination between the wild type and mutants are explained by changes in gibberellin sensitivity. Analysis of hypocotyl growth inhibition and cotyledon opening suggest that these components are also required for full seedling deetiolation under red light. Furthermore, identification of CREs in gene promoters and expression analysis matched the proposed role for these genes in both processes. Conclusions. SOS2, SOS3, and ABI2 are known components of salt signaling, and here we demonstrate that they are also positive elements of light signaling by regulating seedling deetiolation and altering gibberellic acid sensitivity during germination. These results suggest that they act as integrators of different signaling pathways.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
University of Chicago Press  
dc.rights
info:eu-repo/semantics/openAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
ARABIDOPSIS THALIANA  
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CROSS TALK  
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LIGHT SIGNALING  
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SALT OVERLY SENSITIVE (SOS) PATHWAY  
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SALT SIGNALING  
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Ciencias de las Plantas, Botánica  
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Ciencias Biológicas  
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CIENCIAS NATURALES Y EXACTAS  
dc.title
Salt-Overly Sensitive 2 (SOS2) and interacting partners SOS3 and ABI2 promote red-light dependent germination and seedling de-etiolation in Arabidospsis  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2023-01-24T10:16:56Z  
dc.journal.volume
178  
dc.journal.number
6  
dc.journal.pagination
485-493  
dc.journal.pais
Estados Unidos  
dc.journal.ciudad
Chicago  
dc.description.fil
Fil: Trupkin, Santiago Ariel. 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; Argentina  
dc.description.fil
Fil: Auge, Gabriela Alejandra. 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; Argentina  
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Fil: Zhu, Jian Kang. Purdue University; Estados Unidos  
dc.description.fil
Fil: Sanchez, Rodolfo Augusto. 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; Argentina  
dc.description.fil
Fil: Botto, Javier Francisco. 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; Argentina  
dc.journal.title
International Journal of Plant Sciences  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1086/692097