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Article

Gluconacetobacter diazotrophicus Changes The Molecular Mechanisms of Root Development in Oryza sativa L. Growing Under Water Stress

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Departamento de Biologia–Centro de Ciências Biológicas e da Saúde / Programa de Pós-Graduação em Ciências Agrárias, Universidade Estadual da Paraíba, Rua Baraúnas, 351, Bairro Universitário, Campina Grande-PB 58429-500, Brazil
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Corporación Colombiana de Investigación Agropecuaria—AGROSAVIA. Centro de Investigación Tibaitatá—Km 14 Vía Mosquera-Bogotá, Cundinamarca, Colombia
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Embrapa Agrobiologia, Rodovia BR 465, km 07, Seropédica-RJ 23891-000, Brazil
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2020, 21(1), 333; https://doi.org/10.3390/ijms21010333
Received: 1 December 2019 / Revised: 31 December 2019 / Accepted: 2 January 2020 / Published: 3 January 2020
(This article belongs to the Special Issue Underground Mechanism to Enhance Stress Tolerance in Rice)
Background: Inoculation with Gluconacetobacter diazotrophicus has shown to influence root development in red rice plants, and more recently, the induced systemic tolerance (IST) response to drought was also demonstrated. The goal of this study was to evaluate the inoculation effect of G. diazotrophicus strain Pal5 on the amelioration of drought stress and root development in red rice (Oryza sativa L.). Methods: The experimental treatments consist of red rice plants inoculated with and without strain Pal5 in presence and absence of water restriction. Physiological, biochemical, and molecular analyses of plant roots were carried out, along with measurements of growth and biochemical components. Results: The plants showed a positive response to the bacterial inoculation, with root growth promotion and induction of tolerance to drought. An increase in the root area and higher levels of osmoprotectant solutes were observed in roots. Bacterial inoculation increased the drought tolerance and positively regulated certain root development genes against the water deficit in plants. Conclusion: G. diazotrophicus Pal5 strain inoculation favored red rice plants by promoting various root growth and developmental mechanisms against drought stress, enabling root development and improving biochemical composition. View Full-Text
Keywords: Endophytic bacteria; red rice; effectiveness of root development Endophytic bacteria; red rice; effectiveness of root development
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MDPI and ACS Style

Silva, R.; Filgueiras, L.; Santos, B.; Coelho, M.; Silva, M.; Estrada-Bonilla, G.; Vidal, M.; Baldani, J.I.; Meneses, C. Gluconacetobacter diazotrophicus Changes The Molecular Mechanisms of Root Development in Oryza sativa L. Growing Under Water Stress. Int. J. Mol. Sci. 2020, 21, 333. https://doi.org/10.3390/ijms21010333

AMA Style

Silva R, Filgueiras L, Santos B, Coelho M, Silva M, Estrada-Bonilla G, Vidal M, Baldani JI, Meneses C. Gluconacetobacter diazotrophicus Changes The Molecular Mechanisms of Root Development in Oryza sativa L. Growing Under Water Stress. International Journal of Molecular Sciences. 2020; 21(1):333. https://doi.org/10.3390/ijms21010333

Chicago/Turabian Style

Silva, Renata, Luanna Filgueiras, Bruna Santos, Mariana Coelho, Maria Silva, Germán Estrada-Bonilla, Marcia Vidal, José I. Baldani, and Carlos Meneses. 2020. "Gluconacetobacter diazotrophicus Changes The Molecular Mechanisms of Root Development in Oryza sativa L. Growing Under Water Stress" International Journal of Molecular Sciences 21, no. 1: 333. https://doi.org/10.3390/ijms21010333

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