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Genetics of Phytobacterial Infections

Specialized Group:

Genetics of Phytobacterial Infections

Mª José Soto Misffut (Estación Experimental del Zaidín, CSIC)

El grupo emplea la simbiosis mutualista Rhizobium-leguminosa como modelo de estudio en la identificación de mecanismos moleculares que gobiernan las interacciones planta-bacteria. Especialmente nos interesa desvelar señales químicas y componentes bacterianos que participan en las etapas tempranas de la interacción y que pueden repercutir en el proceso de colonización de las plantas que tiene lugar tanto en las asociaciones mutualistas como patogénicas. Para ello, empleamos como estrategia particular el estudio de la vida en superficie de Rhizobium utilizando aproximaciones multidisciplinares. Actualmente desarrollamos dos líneas de investigación específicas:

  1. Identificación de las bases moleculares que rigen la movilidad en superficie en Rhizobium
  2. Estudio del volatiloma de Rhizobium: propiedades biológicas que repercuten en la salud de las plantas, mecanismo de acción y vías de síntesis.

 

https://www.eez.csic.es/es/genetica-de-infecciones-fitobacterianas

 

Representative Publications

Nogales, J., Bernabéu-Roda, L., Cuéllar, V., and Soto, M.J. (2012) ExpR is not required for swarming but promotes sliding in Sinorhizobium meliloti. J. Bacteriol. 194(8): 2027-2035. doi: 10.1128/JB.06524-11.

Charoenpanich, P., Soto, M.J. Becker, A., and McIntosh, M. (2015) Quorum sensing restrains growth and is rapidly inactivated during domestication of Sinorhizobium meliloti. Environ. Microbiol. Rep. 7(2): 373-382. doi: 10.1111/1758-2229.12262.

Amaya-Gómez, C.V., Hirsch, A.M., and Soto, M.J. (2015) Biofilm formation assessment in Sinorhizobium meliloti reveals interlinked control with surface motility. BMC Microbiol. 15(1): 58. doi: 10.1186/s12866-015-0390-z.

Bernabéu-Roda, L., Calatrava-Morales, N., Cuéllar, V., and Soto, M.J. (2015) Characterization of surface motility in Sinorhizobium meliloti: regulation and role in symbiosis. Symbiosis 67(1-3): 79-90. doi: 10.1007/s13199-015-0340-4.

Peláez-Vico, M.A., Bernabéu-Roda, L., Kohlen, W., Soto, M.J., and López-Ráez, J.A. (2016) Strigolactones in the Rhizobium-legume symbiosis: stimulatory effect on bacterial surface motility and down-regulation of their levels in nodulated plants. Plant Sci. 245: 119-127. doi: 10.1016/j.plantsci.2016.01.012.

Calatrava-Morales, N., Nogales, J., Ameztoy, K., van Steenbergen, B., and Soto, M.J. (2017) The NtrY/NtrX system of Sinorhizobium meliloti GR4 regulates motility, EPS I production, and nitrogen metabolism but is dispensable for symbiotic nitrogen fixation. Mol. Plant-Microbe Interact. 30(7): 566-577. doi: 10.1094/MPMI-01-17-0021-R.

López-Lara I.M., Nogales J., Pech-Canul A., Calatrava-Morales N., Bernabéu-Roda L.M., Cuéllar V., Durán P., Olivares J., Alvarez L., Palenzuela-Bretones D., Romero, M., Heeb S., Cámara M., Geiger O., and Soto M.J. (2018) 2-Tridecanone impacts surface-associated bacterial behaviours and hinders plant-bacteria interactions. Environ. Microbiol. 20(6): 2049-2065. doi: 10.1111/1462-2920.14083.

Calatrava-Morales N. McIntosh M., and Soto M.J. (2018) Regulation mediated by N-acyl homoserine lactone quorum sensing signals in the Rhizobium-legume symbiosis. Genes 9(5): 263. doi: 10.3390/genes9050263.

Crespo-Rivas J.C., Navarro-Gómez P., Alias-Villegas C., Shi J., Zhen T., Niu Y., Cuéllar V., Moreno J., Cubo T., Vinardell J.M., Ruiz-Sainz J.E., Acosta-Jurado S., and Soto M.J. (2019) Sinorhizobium fredii HH103 RirA is required for oxidative stress resistance and efficient symbiosis with soybean. Int. J. Mol. Sci. 20(3): 787. doi: 10.3390/ijms20030787.

Pech-Canul A., Rivera-Hernández G., Nogales J., Geiger O., Soto M.J., and López-Lara I.M. (2020) Role of Sinorhizobium meliloti and Escherichia coli long-chain acyl-CoA synthetase FadD in long-term survival. Microorganisms 8, 470. doi: 10.3390/microorganisms8040470.

 

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