Marta Sebastián Caumel

Additional information: 

Marta Sebastián is a non-permanent researcher in the IOCAG. She received her B.S in Marine Sciences from the University of Cádiz in 1996. After completing a master in the department of Ecology she went on to the PhD program at the University of Malaga. In 2005, she moved as a postdoctoral fellow to Rutgers University in New Brunswick (USA) for four years, funded by the Ministry of Science-Fulbright and a Marie Curie OIF action. In 2009, she started working at the ICM-CSIC in Barcelona as a postdoctoral fellow until September 2015, when she became a research associate. In September 2017, she moved to work at the IOCAG.
Her main research line attempts to understand the mechanisms underlying the structure of marine microbial communities and their impact on global biogeochemical cycles. During her research career she has used oceanographic, biochemical, molecular, physiological and ‘omics’ approaches to address these issues.

Research interests: 
  • Linking microbial diversity and ecosystem function using single-cell and ‘omics’ approaches
  • Physiological status of microbes in the ocean
  • Microbial life and survival in the bathypelagic ocean

Recent publications

Acinas, S. G., Sánchez, P., Salazar, G., Cornejo-Castillo, F. M., Sebastián, M., Logares, R., Royo-Llonch, M., Paoli, L., Sunagawa, S., Hingamp, P., Ogata, H., Lima-Mendez, G., Roux, S., González, J. M., Arrieta, J. M., Alam, I. S., Kamau, A., Bowler, C., Raes, J., Pesant, S., Bork, P., Agustí, S., Gojobori, T., Vaqué, D, Sullivan, M. B., Pedrós-Alió, C., Massana, R, Duarte, C. M., Gasol, J. M., 2021. Deep ocean metagenomes provide insight into the metabolic architecture of bathypelagic microbial communities. Communications biology, 4 (1), 1-15.

Castillo, Y. M., Forn, I., Yau, S., Morán, X. A. G., Alonso‐Sáez, L., Arandia‐Gorostidi, N., Vaqué, D., Sebastián, M., 2021. Seasonal dynamics of natural Ostreococcus viral infection at the single cell level using VirusFISH. Environmental microbiology, 23 (6), 3009-3019.

Cerro-Gálvez, E., Dachs, J., Lundin, D., Fernández-Pinos, M. C., Sebastián, M., Vila-Costa, M., 2021Responses of Coastal Marine Microbiomes Exposed to Anthropogenic Dissolved Organic Carbon. Environmental Science and Technology, 55 (14), 9609–9621.

Sebastián, M., Sánchez, P., Salazar, G., Álvarez-Salgado, X. A., Reche, I., Morán, X. A. G., Montserrat Sala, M., Duarte, C. M., Acinas, S. G, Gasol, J. M., 2021. The quality of dissolved organic matter shapes the biogeography of the active bathypelagic microbiome. bioRxiv.

Sebastián, M., Forn, I., Auladell, A., Gómez‐Letona, M., Montserrat Sala, M., Gasol, J. M., Marrasé, C., 2021. Differential recruitment of opportunistic taxa leads to contrasting abilities in carbon processing by bathypelagic and surface microbial communities. Environmental Microbiology, 23 (1), 190-206.

Logares, R:, Deutschmann, I. M., Junger, P. C., Giner, C. R., Krabberød, A. K., Schmidt, T. S. B., Rubinat-Ripoll, L., Mestre, M., Salazar, G., Ruiz-González, C,. Sebastian, M., De Vargas, C., Acinas, S. G., Duarte, C. M., Gasol, J. M., Massana, R., 2020. Disentangling the mechanisms shaping the surface ocean microbiota. Microbiome, 8 (1), 1-17.

Sánchez, O., Ferrera, I., Mabrito, I., Gazulla, C. R., Sebastián, M., Auladell, A., Marín-Vindas, C., Cardelús, C., Sans-Sáez, I., Pernice, M. C., Marrasé, C., Montserrat, Sala, M., Gasol, J. M., 2020. Seasonal impact of grazing, viral mortality, resource availability and light on the group-specific growth rates of coastal Mediterranean bacterioplankton. Scientific reports, 10 (1), 1-15.

Castillo, Y. M., Sebastián, M., Forn, I., Grimsley, N., Yau, S., Moraru, C., Vaqué, D., 2020. Visualization of viral infection dynamics in a unicellular eukaryote and quantification of viral production using virus fluorescence in situ hybridization. Frontiers in microbiology, 11, 1559.

Sotomayor-Garcia, A., Montserrat Sala, M., Ferrera, I., Estrada, M., Vázquez-Domínguez, E., Emelianov, M., Cortés, P., Marrasé, C., Ortega-Retuerta, E., Nunes, S., Castillo, Y. M., Serrano Cuerva, M., Sebastián, M., Dall’Osto, M., Simó, R., Vaqué, D., 2020. Assessing Viral Abundance and Community Composition in Four Contrasting Regions of the Southern Ocean. Life, 10 (7), 107.

Ruiz‐González, C., Mestre, M., Estrada, M., Sebastián, M., Salazar, G., Agustí, S., Moreno‐Ostos, E., Reche, I., Álvarez‐Salgado, X. A., G Morán, X. A., Duarte, C. M., Montserrat Sala, M., Gasol, J. M., 2020. Major imprint of surface plankton on deep ocean prokaryotic structure and activity. Molecular ecology, 29, (10), 1820-1838.

Castillo, Y.M., Mangot, J.-F., Benites, L.F., Logares, R., Kuronishi, M., Ogata, H., Jaillon, O., Massana, R., Sebastian, M., Vaqué, D., 2019. Assessing the viral content of uncultured picoeukaryotes in the global‐ocean by single cell genomics. Molecular Ecology.

Díez-Vives, C., Nielsen, S., Sánchez, P., Palenzuela, O., Ferrera, I., Sebastián, M., Pedrós-Alió, C., Gasol, J.M., Acinas, S., 2019. Delineation of ecologically distinct units of marine Bacteroidetes in the Northwestern Mediterranean Sea. Molecular Ecology.

Ruiz-González, C., Logares, R., Sebastián, M., Mestre, M., Rodríguez-Martínez, R., Galí, M., Sala, M.M., Acinas, S.G., Duarte, C.M., Gasol, J.M., 2019. Higher contribution of globally rare bacterial taxa reflects environmental transitions across the surface ocean. Molecular Ecology.

Sebastián, M., Estrany, M., Ruiz-González, C., Forn, I, Sala, M.M., Gasol, J.M., Marrasé, C., 2019. High Growth Potential of Long-Term Starved Deep Ocean Opportunistic Heterotrophic Bacteria. Frontiers in Microbiology 10(760)

Sebastián, M., Gasol, J.M., 2019. Visualization is crucial for understanding microbial processes in the ocean. Philosophical Transactions of the Royal Society B, 374: 20190083.

Vila-Costa, M., Sebastián, M., Pizarro, M., Cerro-Gálvez, E., Lundin, D., Gasol, J.M., Dachs, J., 2019. Microbial consumption of organophosphate esters in seawater under phosphorus limited conditions. Scientific Reports 9, 233.

Leizeaga, A., Estrany, M., Forn, I., Sebastián, M., 2017. Using Click-Chemistry for Visualizing in Situ Changes of Translational Activity in Planktonic Marine Bacteria. Frontiers in Microbiology, 8, 2360.

Sebastián, M., August, J. C., Restrepo-Ortiz, C. X., Monserrat-Sala, M., Marrasé, C., Gasol, J. M., 2017. Deep ocean prokaryotic communities are remarkably malleable when facing long-term starvation. Environmental Microbiology, 1462-2920.

Sebastián, M., Smith, A.F., González, J.M., Fredricks, H.F., Van Mooy, B., Koblížek, M., Brandsma, J., Koster, G., Mestre, M., Mostajir, B., Pitta, P., Postle, A.D., Sánchez, P., Gasol, J.M., Scalan, D.J., Chen, Y., 2016. Lipid remodelling is a widespread strategy in marine heterotrophic bacteria upon phosphorus deficiency. The ISME Journal, 10, 968-978.

Ferrera, I., Sebastian,M., Acinas, S.G., Gasol,J.M., 2015. Prokaryotic functional gene diversity in the sunlit ocean: Stumbling in the dark. Current Opinion in Microbiology, 25, 33-39.

Lima-Mendez,G., Faust, K., Henry, N., Decelle. J., Colin, S., Carcillo, F., Chaffron, S., Ignacio-Espinosa, J.C., Roux, S., Vincent, F., Bittner, L., Darzi, Y., Wang, J., Audi, S., Berline, L., Bontempi, G., Cabello, A.M., Coppola, L., Cornejo-Castillo, F.M., d'Ovidio, F., De Meester, L., Ferrera, I., Garet-Delmas, M.J., Guidi, L., Lara, E., Pesant, S., Royo-Lonch, M., Salazar, G., Sánchez, P., Sebastián, M., Souffreau, C., Dimier, C., Picheral, M., Searson, S., Kandels-Lewis, S., Gorsky, G., Not, F., Ogata, H., Speich, S., Stemmann, L., Weissenbach, J., Wincker, P., Acinas, S.G., Sunagawa, S., Bork, P., Sullivan, M.B., Karsenti, E., Bowler, C., de Vargas, C., Raes, J., 2015. Determinants of community structure in the global plankton interactome. Science, 348, Issue 6237, 1262073.

Sebastián, M., Gasol, J.M., 2013. Heterogeneity in the nutrient limitation of different bacterioplankton groups in the Eastern Mediterranean Sea. The ISME Journal, 7, 1665-1668.

Sebastián, M., Pitta, P., González, J.M., Thingstad, T.F., Gasol, J.M., 2012. Bacterioplankton groups involved in the uptake of phosphate and dissolved organic phosphorus in a mesocosm experiment with P-starved Mediterranean waters. Environmental Microbiology, 14(9), 2334-2347.

Ferrera, I., Gasol, J.M., Sebastián, M., Hojerová, E., Koblížek, M., 2011. Comparison of Growth Rates of Aerobic Anoxygenic Phototrophic Bacteria and Other Bacterioplankton Groups in Coastal Mediterranean Waters. Applied and Environmental Microbiology, 21, 7451-7458.

Sebastián, M., Ammerman, J.W., 2011. Role of the phosphatase PhoX in the phosphorus metabolism of the marine bacterium Ruegeria pomeroyi DSS-3. Environmental Microbiology Reports, 3(5), 535-542.

Sebastián, M., Ammerman, J.W., 2009. The alkaline phosphatase PhoX is more widely distributed in marine bacteria than the classical PhoA. The ISME Journal, 3, 563-572.

Chichester, K.D., Sebastián, M., Ammerman, J.W., Colyer, C.L., 2008. Enzymatic assay of marine bacterial phosphatases by capillary electrophoresis with laser-induced fluorescence detection. Electrophoresis, 29(18), 3810-3816.

Mercado, J.M., Ramírez, T., Cortés, D., Sebastián, M., Liger, E., Bautista, B., 2008. Partitioning the effects of changes in nitrate availability and phytoplankton community structure on relative nitrate uptake. Marine Ecology Progress Series, 359, 51-68.

Mercado, J.M., Ramírez, T., Cortés, D., Sebastián, M., Reul, A., Bautista, B., 2006. Diurnal changes in the bio-optical properties of the phytoplankton in the Alborán Sea (Mediterranean Sea). Estuarine, Coastal and Shelf Science, 69(3-4), 459-470.

Morán, X.A.G., Sebastián, M., Pedrís-Alií, C., Estrada, M., 2006. Response of Southern Ocean phytoplankton and bacterioplankton production to short-term experimental warming. Limnology and Oceanography, 51(4), 1791-1800.

Ramirez,T., Liger, E., Mercado, J.M., Cortés,D., Vargas-Yáñez, M., Sebastian, M., Reul, A., Aguilera, J., Bautista, B., 2006. Respiratory ETS activity of plankton in the northwestern Alboran Sea: seasonal variability and relationship with hydrological and biological features. Journal of Plankton Research, 28(7), 629-641.

Mercado, J.M., Ramírez, T., Cortés, D., Sebastián, M., Vargas-Yáñez, M., 2005. Seasonal and inter-annual variability of the phytoplankton communities in an upwelling area of the Alborán Sea (SW Mediterranean Sea). Scientia Marina, 69 (4), 451-465.

Ramírez, T., Cortés, D., Mercado, J.M., Vargas-Yáñez, M., Sebastián, M., Liger, E., 2005. Seasonal dynamics of inorganic nutrients and phytoplankton biomass in the NW Alboran Sea. Estuarine, Coastal and Shelf Science, 65(4), 654-670.

Sebastián, M., Arístegui, J., Montero, M. F., Niell, F. X., 2004. Kinetics of alkaline phosphatase activity, and effect pf phosphate enrichment: a case study in the NW African upwelling region. Marine Ecology Progress Series, 270, 1-13.

Sebastián, M., Arístegui, J., Montero, M. F., Escánez, J., Niell, F. X., 2004. Alkaline phosphatase activity and its relationship to inorganic phosporous in the transition zone of the North-western African upwelling system. Progress in Oceanography, 62, 131-150.

Sebastián, M., Niell, F.X., 2004. Alkaline phosphatase activity in marine oligotrophic environments: implications of single-substrate addition assays for potential activity estimations. Marine Ecology Progress Series, 277, 285-290.

Vargas-Yáñez, M., Ramírez, T., Cortés, D., Sebastián, M., Plaza, F., 2002. Warming trends in the continental shelf of Málaga Bay (ALBORÁN SEA). Geophysical Research Letters, 29(22), 39-1-39-4

Vergara, J.J., Sebastián, M., Pérez-Llorens, J.L., Hernández, I., 1998. Photoacclimation of Ulva rigida and U. rotundata (Chlorophyta)arranged in canopies. Marine Ecology-Progress Series, 165, 283-292.

Sebastián, M., Estrany, M., Ruiz-González, C., Forn, I., Sala, M.M., Gasol, J.M., Marrasé, C., 2019. High Growth Potential of Long-Term Starved Deep Ocean Opportunistic Heterotrophic Bacteria. Frontiers in Microbiology, 10, 760.