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jose luis

Jose Luis Balcazar, Ph.D.

Research Scientist

Dr. Balcazar received his Ph.D. in Animal Pathology from the University of Zaragoza in 2006 and completed a postdoctoral fellowship in the Institute of Marine Research at the Spanish National Research Council (CSIC) in 2009. He then joined the Group of Microbiology at the Catalan Institute for Water Research (ICRA) as a junior researcher. Since 2012, Dr. Balcazar holds a Ramon y Cajal senior research position at ICRA. His research interests are focused on host-microbe interactions, microbial diversity, and antibiotic resistance in the environment.

Honors and Awards

  • I3 Program Certificate, Spanish National Evaluation and Foresight Agency (ANEP)
  • Ramon y Cajal Research Fellow, Spanish Ministry of Economy and Competitiveness (MINECO)
  • Award to the best Ph.D. Thesis on Animal Health, Laboratorios SYVA, S.A.
  • Excellence Ph.D. Award, University of Zaragoza

Editorial activities

Selected publications

  • Szekeres E., Baricz A., Chiriac C.M., Farkas A., Opris O., Soran M.L., Andrei A.S., Rudi K., Balcazar J.L., Dragos N., Coman C. 2017. Abundance of antibiotics, antibiotic resistance genes and bacterial community composition in wastewater effluents from different Romanian hospitals. Environmental Pollution Accepted.

  • Lekunberri I., Subirats J., Borrego C.M., Balcazar J.L. 2017. Exploring the contribution of bacteriophages to antibiotic resistance. Environmental Pollution 220, 981-984 (This article was featured in the Scientist Magazine).

  • Rafraf I.D., Lekunberri I., Sanchez-Melsio A., Aouni M., Borrego C.M., Balcazar J.L. 2016. Abundance of antibiotic resistance genes in five municipal wastewater treatment plants in the Monastir Governorate, Tunisia. Environmental Pollution 219, 353-358.

  • Subirats J., Sanchez-Melsio A., Borrego C.M., Balcazar J.L., Simonet P. 2016. Metagenomic analysis reveals that bacteriophages are reservoirs of antibiotic resistance genes. International Journal of Antimicrobial Agents 48, 163-167.

  • Lucas D., Badia-Fabregat M., Vicent T., Caminal G., Rodriguez-Mozaz S., Balcazar J.L., Barcelo D. 2016. Fungal treatment for the removal of antibiotics and antibiotic resistance genes in veterinary hospital wastewater. Chemosphere 152, 301-308.

  • Proia L., von Schiller D., Sanchez-Melsio A., Sabater S., Borrego C.M., Rodriguez-Mozaz S., Balcazar J.L. 2016. Occurrence and persistence of antibiotic resistance genes in river biofilms after wastewater inputs in small rivers. Environmental Pollution 210, 121-128 (This article was featured in the Science for Environment Policy: European Commission DG Environment News Alert Service).

  • Balcazar J.L. 2015. Effect of ciliates in transfer of plasmid-mediated quinolone-resistance genes in bacteria. Emerging Infectious Diseases 21, 547-549.

  • Rodriguez-Mozaz S., Chamorro S., Marti E., Huerta B., Gros M., Sanchez-Melsio A., Borrego C.M., Barcelo D., Balcazar J.L. 2015. Occurrence of antibiotics and antibiotic resistance genes in hospital and urban wastewaters and their impact on the receiving river. Water Research 69, 234-242.

  • Etyemez M., Balcazar J.L. 2015. Bacterial community structure in the intestinal ecosystem of rainbow trout (Oncorhynchus mykiss) as revealed by pyrosequencing-based analysis of 16S rRNA genes. Research in Veterinary Science 100, 8-11.

  • Balcazar J.L. 2014. Bacteriophages as vehicles for antibiotic resistance genes in the environment. PLoS Pathogens 10, e1004219 (This article was featured in the Scientific American Blog).

  • Marti E., Variatza E., Balcazar J.L. 2014. Bacteriophages as a reservoir of extended-spectrum beta-lactamase and fluoroquinolone resistance genes in the environment. Clinical Microbiology and Infection 20, O456-O459.

  • Marti E., Variatza E., Balcazar J.L. 2014. The role of aquatic ecosystems as reservoirs of antibiotic resistance. Trends in Microbiology 22, 36-41.

  • Marti E., Huerta B., Rodriguez-Mozaz S., Barcelo D., Jofre J., Balcazar J.L. 2014. Characterization of ciprofloxacin-resistant isolates from a wastewater treatment plant and its receiving river. Water Research 61, 67-76.

  • Sidrach-Cardona R., Hijosa-Valsero M., Marti E., Balcazar J.L., Becares E. 2014. Prevalence of antibiotic-resistant fecal bacteria in a river impacted by both an antibiotic production plant and urban treated discharges. Science of the Total Environment 488-489, 220-227.

  • Marti E., Balcazar J.L. 2014. Use of pyrosequencing to explore the benthic bacterial community structure in a river impacted by wastewater treatment plant discharges. Research in Microbiology 165, 468-471.

  • Marti E., Jofre J., Balcazar J.L. 2013. Prevalence of antibiotic resistance genes and bacterial community composition in a river influenced by a wastewater treatment plant. PLoS ONE 8, e78906.

  • Marti E., Balcazar J.L. 2013. Real-time PCR assays for quantification of qnr genes in environmental water samples and chicken feces. Applied and Environmental Microbiology 79, 1743-1745.

  • Huerta B., Marti E., Gros M., Lopez P., Pompeo M., Armengol J., Barcelo D., Balcazar J.L., Rodriguez-Mozaz S., Marce R. 2013. Exploring the links between antibiotic occurrence, antibiotic resistance, and bacterial communities in water supply reservoirs. Science of the Total Environment 456-457, 161-170.


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