Personal-EB


Keilor Osvaldo Rojas Jiménez
Escuela de Biología
Apdo. 11501-2060
San Pedro, San José
Costa Rica
keilor.rojas@ucr.ac.cr
Telefono: 25115871
Oficina: 25_
Horario:

Investigación

Mecanismos de resistencia a los desinfectantes y a los antibióticos en microorganismos aislados de plantas de tratamiento de aguas residuales del Gran Área Metropolitana, Costa Rica (Pry01-257-2018)

Proyectos inscritos: https://vinv.ucr.ac.cr/sigpro/web/researchers/205140944

Docencia

Biología General

Laboratorio de Genética General

Genética y Ecología Microbiana (Problemas especiales en genética)

 

Cursos en otras instituciones

Sostenibilidad y Desarrollo de Sistemas Naturales Productivos (TEC)

Introducción a la Biotecnología y a la Ingeniería Genética (UNA)

Publicaciones

Diversidad y ecología de hongos acuáticos y oomicetos
• Grossart, H.‐P., Van den Wyngaert, S., Kagami, M., Wurzbacher, C., Cunliffe, M. and Rojas‐Jimenez, K. 2020. Pilze in aquatischen Ökosystemen. In Handbuch Angewandte Limnologie: Grundlagen ‐ Gewässerbelastung ‐ Restaurierung ‐ Aquatische Ökotoxikologie ‐ Bewertung ‐ Gewässerschutz (eds W. Calmano, M. Hupfer, H. Fischer and H. Klapper). doi:10.1002/9783527678488.hbal2019002
• Masigol H., Khodaparast S.A., Mostowfizadeh-Ghalamfarsa R., Rojas-Jimenez K., Woodhouse J.N,, Neubauer D., Grossart H.P. 2020. Taxonomical and functional diversity of Saprolegniales in Anzali lagoon, Iran. Aquatic Ecology, 54: 323–336.
• Masigol H., Khodaparast S. A., Mostowfizadeh-Ghalamfarsa R., Mousanejad S., Rojas-Jimenez K., Grossart H. P. 2019. Notes on Dictyuchus species (Stramenopila, Oomycetes) from Anzali lagoon, Iran. Mycologia Iranica, 5(2):79-89.
• Rojas-Jimenez K, Rieck A, Wurzbacher C, Jürgens K, Labrenz M, Grossart H-P. 2019. A salinity threshold separating fungal communities in the Baltic Sea. Frontiers in Microbiology, 10: 680.
• Rezakhani, F., Khodaparast, S., Masigol, H., Rojas-Jimenez, K., Grossart, H., Bakhshi, M. 2019. A preliminary report of aquatic hyphomycetes isolated from Anzali lagoon (Gilan province, North of Iran). Rostaniha, 20(2), 123-143.
• Masigol, H. , Khodaparast, S. A., Woodhouse, J. N., Rojas‐Jimenez, K. , Fonvielle, J. , Rezakhani, F. , Mostowfizadeh‐Ghalamfarsa, R. , Neubauer, D. , Goldhammer, T. and Grossart, H. 2019. The contrasting roles of aquatic fungi and oomycetes in the degradation and transformation of polymeric organic matter. Limnology and Oceanography, 64:2662-2678.
• Perkins A, Ganzert L, Rojas-Jiménez K, Fonvielle J, Hose G.C Grossart H-P. 2019. Highly diverse fungal communities in carbon-rich aquifers of two contrasting lakes in Northeast Germany. Fungal Ecology, 41:116-125.
• Grossart H-P, Van den Wyngaert S, Kagami M, Wurzbacher C, Cunliffe M, Rojas-Jimenez K. 2019. Fungi in aquatic ecosystems. Nature Reviews Microbiology, 17:339–354
• Van den Wyngaert S, Rojas‐Jimenez K, Seto K, Kagami M, Grossart H-P. 2018. Diversity and Hidden Host Specificity of Chytrids infecting Colonial Volvocacean Algae. The Journal of Eukaryotic Microbiology. 65:870-881.
• Rojas-Jimenez K, Wurzbacher C, Bourne E. C., Chiuchiolo A, Priscu J.C., Grossart H-P. 2017. Early diverging lineages of Cryptomycota and Chytridiomycota dominate the fungal communities in pristine lakes of Antarctica. Scientific Reports. 7:15348.
• Frenken, T., Alacid, E., Berger, S. A., Bourne, E. C., Gerphagnon, M., Grossart, H.-P., Gsell, A. S., Ibelings, B. W., Kagami, M., Küpper, F. C., Letcher, P. M., Loyau, A., Miki, T., Nejstgaard, J. C., Rasconi, S., Reñé, A., Rohrlack, T., Rojas-Jimenez, K., Schmeller, D. S., Scholz, B., Seto, K., Sime-Ngando, T., Sukenik, A., Van de Waal, D. B., Van den Wyngaert, S., Van Donk, E., Wolinska, J., Wurzbacher, C. and Agha, R. 2017. Integrating chytrid fungal parasites into plankton ecology. Research gaps and needs. Environmental Microbiology. 19:3802-3822.
• Van den Wyngaert S, Seto K, Rojas-Jimenez K, Kagami M, Grossart H-P. 2017. A New Parasitic Chytrid, Staurastromyces oculus (Rhizophydiales, Staurastromycetaceae fam. nov.), Infecting the Freshwater Desmid Staurastrum sp. Protist. 168: 392-407.
• Rojas-Jimenez K, Fonvielle J, Ma & Grossart HP. 2017. Transformation of humic substances by the freshwater Ascomycete Cladosporium sp. Limnology and Oceanography. 62:1955-1962.
• Grossart HP & Rojas-Jimenez K. 2016. Aquatic fungi: targeting the forgotten in microbial ecology. Current Opinion in Microbiology. 31:140-145.


Biodiversidad de Costa Rica
• Arce-Rodríguez A, Puente-Sánchez F, Avendaño R, Libby E, Mora-Amador R, Rojas-Jimenez K, Martínez M, Pieper D.H., Chavarría M. 2020. Microbial Community Structure Along a Horizontal Oxygen Gradient in a Costa Rican Volcanic Influenced Acid Rock Drainage System. Microb Ecol. https://doi.org/10.1007/s00248-020-01530-9.
• Rojas-Jiménez, K. 2018. Microorganismos del corredor marino Isla del Coco-Galápagos: diversidad funcional y de especies. Revista Tecnología En Marcha, 31(4):157-166.
• Rojas-Jimenez K, Hernandez M, Blanco J, Vargas L, Acosta-Vargas L & Tamayo G. 2016. Richness of cultivable endophytic fungi along an altitudinal gradient in wet forests of Costa Rica. Fungal Ecology. 20:124-131.
• Vindas-Rodriguez M, Rojas-Jiménez K, Tamayo G. 2012. Evaluation of three chroroplastic markers for barcoding and for phylogenetic reconstruction purposes in native plants of Costa Rica. Ciencia y Tecnología. 27:24-34.
• Solano G, Rojas-Jiménez K, Jaspars M & Tamayo G. 2009. Diversity of cultivable actinomycetes in Pacific and Caribbean waters of Costa Rica. Antonie van Leeuwenhoek. 96:71-78.


Contaminación por microplásticos
• Arias-Andres M, Rojas-Jimenez K, Grossart, H-P. 2019. Collateral effects of microplastic pollution on aquatic microorganisms: An ecological perspective. Trends in Analytical Chemistry,112:234-240.
• Arias-Andres M, Klümper U, Rojas-Jimenez K, Grossart H-P. 2018. Microplastic pollution increases gene exchange in aquatic ecosystems. Environmental Pollution. 237:253-261.
• Kettner T, Rojas-Jimenez K, Oberbeckmann S, Labrenz M, Grossart H-P. 2017. Microplastics alter composition of fungal communities in aquatic ecosystems. Environmental Microbiology. 19:4447-4459.


Fijación Biológica de Nitrógeno
• Vinuesa, P., Rojas-Jiménez, K., Contreras-Moreira, B., Mahna, S. K., Prasad, B. N., Moe, H., & Werner, D. 2008. Multilocus sequece analysis for assessment of the biogeography and evolutionary genetics of four Bradyrhizobium species that nodulate soybeans on the Asiatic continent. Applied and Environmental Microbiology. 74(22):6987-6996.
• Rojas-Jiménez, K., Sohlenkamp, C., Geiger, O., Martínez-Romero, E., Werner, D., & Vinuesa, P. 2005. A putative chloride channel and ornithine-containing membrane lipids of Rhizobium tropici CIAT899 are involved in symbiotic efficiency and acid tolerance. Molecular Plant-Microbe Interactions. 18(11):1175-1185.
• Hernández-Lucas, I., Rogel-Hernández, M. A., Segovia, L., Rojas-Jiménez, K., & Martínez-Romero, E. 2004. Phylogenetic relationships of rhizobia based on citrate synthase gene sequences. Systematic and applied microbiology. 27(6): 703-706.


Ecofisiología de plantas tropicales
• Rojas-Jiménez K, Gutiérrez M. 2011. Relaciones hídricas en árboles del bosque tropical seco: el caso de Enterolobium cyclocarpum (Water relations in trees of the tropical dry forest). Revista Forestal Mesoamericana Kurú. 8(20):1-8.
• Rojas-Jiménez K, Hoolbrok M & Gutiérrez M. 2007. Dry-season leaf flushing of Enterolobium cyclocarpum (ear-pod tree): above- and belowground phenology and water relations. Tree Physiology. 27:1561-1568.


Microbiomas
• Rojas-Jiménez K, Hernández M. 2015. Isolation of fungi and bacteria associated with the guts of tropical wood-feeding coleoptera and determination of their lignocellulolytic activities. International Journal of Microbiology. 2015:1-11.


Desinfectantes y resistencia a antibióticos
• Chacon-Jimenez L, Rojas-Jimenez K. 2020. Resistencia a desinfectantes y su relación con la resistencia a los antibióticos. Acta Medica Costarricense. 62(1):7-12.

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