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Your search keyword '"María Belén Ripa"' showing total 3 results
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3 results on '"María Belén Ripa"'

1. Light modulates important physiological features of Ralstonia pseudosolanacearum during the colonization of tomato plants

Author

Josefina Tano, María Belén Ripa, María Laura Tondo, Analía Carrau, Silvana Petrocelli, María Victoria Rodriguez, Virginia Ferreira, María Inés Siri, Laura Piskulic, and Elena Graciela Orellano

Subjects
Medicine, Science
Abstract

Abstract Ralstonia pseudosolanacearum GMI1000 (Rpso GMI1000) is a soil-borne vascular phytopathogen that infects host plants through the root system causing wilting disease in a wide range of agro-economic interest crops, producing economical losses. Several features contribute to the full bacterial virulence. In this work we study the participation of light, an important environmental factor, in the regulation of the physiological attributes and infectivity of Rpso GMI1000. In silico analysis of the Rpso genome revealed the presence of a Rsp0254 gene, which encodes a putative blue light LOV-type photoreceptor. We constructed a mutant strain of Rpso lacking the LOV protein and found that the loss of this protein and light, influenced characteristics involved in the pathogenicity process such as motility, adhesion and the biofilms development, which allows the successful host plant colonization, rendering bacterial wilt. This protein could be involved in the adaptive responses to environmental changes. We demonstrated that light sensing and the LOV protein, would be used as a location signal in the host plant, to regulate the expression of several virulence factors, in a time and tissue dependent way. Consequently, bacteria could use an external signal and Rpsolov gene to know their location within plant tissue during the colonization process.

Published
2021
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3. Light modulates important physiological features of Ralstonia pseudosolanacearum during the colonization of tomato plants

Author

Laura Piskulic, María Belén Ripa, María Laura Tondo, María Victoria Rodriguez, María Inés Siri, Silvana Petrocelli, Analía Carrau, Elena G. Orellano, Virginia Ferreira, and Josefina Tano

Subjects
Light, Science, In silico, Virulence, Ralstonia, Microbiology, Genome, Article, Bacterial Adhesion, LOV PHOTORECEPTOR, purl.org/becyt/ford/1 [https], 03 medical and health sciences, Solanum lycopersicum, Bacterial Proteins, Colonization, purl.org/becyt/ford/1.6 [https], Gene, 030304 developmental biology, 0303 health sciences, Multidisciplinary, biology, 030306 microbiology, Bacterial wilt, Polysaccharides, Bacterial, Biofilm, food and beverages, WILTING DISEASE, Gene Expression Regulation, Bacterial, biology.organism_classification, RALSTONIA PSEUDOSOLANACEARUM, Cell biology, Metabolism, Biofilms, Host-Pathogen Interactions, Medicine, Plant sciences, Bacteria
Abstract

Ralstonia pseudosolanacearum GMI1000 (Rpso GMI1000) is a soil-borne vascular phytopathogen that infects host plants through the root system causing wilting disease in a wide range of agro-economic interest crops, producing economical losses. Several features contribute to the full bacterial virulence. In this work we study the participation of light, an important environmental factor, in the regulation of the physiological attributes and infectivity of Rpso GMI1000. In silico analysis of the Rpso genome revealed the presence of a Rsp0254 gene, which encodes a putative blue light LOV-type photoreceptor. We constructed a mutant strain of Rpso lacking the LOV protein and found that the loss of this protein and light, influenced characteristics involved in the pathogenicity process such as motility, adhesion and the biofilms development, which allows the successful host plant colonization, rendering bacterial wilt. This protein could be involved in the adaptive responses to environmental changes. We demonstrated that light sensing and the LOV protein, would be used as a location signal in the host plant, to regulate the expression of several virulence factors, in a time and tissue dependent way. Consequently, bacteria could use an external signal and Rpsolov gene to know their location within plant tissue during the colonization process. Fil: Tano, María Josefina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Ripa, Maria Belén. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Tondo, Maria Laura. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina Fil: Carrau, Analía. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina Fil: Petrocelli, Silvana. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina Fil: Rodriguez, María Victoria. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario; Argentina Fil: Ferreira, Virginia. Universidad de la República. Facultad de Química; Uruguay Fil: Siri, María Inés. Universidad de la República. Facultad de Química; Uruguay Fil: Piskulic, Laura. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas; Argentina Fil: Orellano, Elena Graciela. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Rosario. Instituto de Biología Molecular y Celular de Rosario. Universidad Nacional de Rosario. Facultad de Ciencias Bioquímicas y Farmacéuticas. Instituto de Biología Molecular y Celular de Rosario; Argentina

Published
2021

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