Salt overly sensitive 2 (SOS2) and interacting partners Sos3 and abscisic acid – insensitive 2 (ABI2) promote red - light - dependent germination and seedling deetiolation in Arabidopsis

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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 (S...

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Detalles Bibliográficos
Otros Autores: Trupkin, Santiago Ariel, Auge, Gabriela Alejandra, Zhu, J. K., Sánchez, Rodolfo Augusto, Botto, Javier Francisco
Formato: Artículo
Lenguaje:Inglés
Materias:
ARABIDOPSIS THALIANA
CROSS TALK
LIGHT SIGNALING
SALT OVERLY SENSITIVE (SOS) PATHWAY
SALT SIGNALING
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2017trupkin.pdf
LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 1 |a Salt overly sensitive 2 (SOS2) and interacting partners Sos3 and abscisic acid – insensitive 2 (ABI2) promote red - light - dependent germination and seedling deetiolation in Arabidopsis 
520 |a 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. 
653 |a ARABIDOPSIS THALIANA 
653 |a CROSS TALK 
653 |a LIGHT SIGNALING 
653 |a SALT OVERLY SENSITIVE (SOS) PATHWAY 
653 |a SALT SIGNALING 
700 1 |9 68567  |a Trupkin, Santiago Ariel  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación de Recursos Naturales. Instituto de Floricultura. Hurlingham. Buenos Aires, Argentina. 
700 1 |9 68568  |a Auge, Gabriela Alejandra  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u Fundación Instituto Leloir. Instituto de Investigaciones Bioquímicas de Buenos Aires (IIBBA). Buenos Aires, Argentina. 
700 1 |a Zhu, J. K.  |u Shanghai Center for Plant Stress Biology. Chinese Academy of Sciences. Shanghai, China.  |u Purdue University. Department of Horticulture and Landscape Architecture. United States.  |9 68569 
700 1 |9 49417  |a Sánchez, Rodolfo Augusto  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
700 1 |9 65609  |a Botto, Javier Francisco  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. 
773 0 |t International journal of plant sciences  |w SECS000104  |g vol.178, no.6 (2017), p.485-493, grafs., tbls. 
856 |f 2017trupkin  |i en reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2017trupkin.pdf  |x ARTI201904 
856 |z LINK AL EDITOR  |u https://www.press.uchicago.edu 
942 |c ARTICULO 
942 |c ENLINEA 
976 |a AAG 

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