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Jaroslaw E. Król

Jaroslaw E. Król, PhD

Assistant Professor

Department: Microbiology & Immunology


  • PhD, Biological Sciences - Thesis: "Genetic and sequencing analysis of DNA region involved in synthesis of exopolysaccharide in Rhizobium leguminosarum bv. trifolii" (1999)
  • MS, Biotechnology, Maria-Curie Sklodowska University (1993)

Awards & Honors

  • 2nd Award of Memory of Prof. Kazimierz Bassalik from Committee of Microbiology, Polish Academy of Science (2004)
  • 1st Team Award of Organization Committee of The First National Biotechnology Congress, Lódz (2003)
  • 2nd Team Award of Polish Genetic Society, Poznan (2001)
  • Award of Ministry of Education (1999)
  • FEMS Scholarship (1999)
  • Scholarship for Young Scientists from Foundation for Polish Science (1999)
  • 2nd Team Award of J.M. Rector University of Maria Curie-Sklodowska (1998)
  • 2nd Team Award of J.M. Rector University of Maria Curie-Sklodowska (1996)
  • Letter of Congratulations of J.M. Rector of University of Maria Curie-Sklodowska – MS with honors (1993)

Memberships / Professional Affiliations

  • American Society for Microbiology
  • Society for the Study of Evolution
  • Polish Genetic Society
  • Polish Society of Microbiologists
  • Microbiology Committee of The Polish Academy of Sciences (1999-2003)
  • Biotechnology Commission Polish Academy of Sciences Lublin Branch (secretary)
  • Faculty of Biology and Earth Sciences Board (1999-2005)
  • Institute of Microbiology and Biotechnology Board

Other Languages Spoken


Jaroslaw E. Król, PhD, is an assistant professor in the Department of Microbiology and Immunology at Drexel University College of Medicine.

Dr. Krol obtained a master of science in biotechnology and PhD in biological sciences from UMCS Lublin, Poland. He was a postdoctoral fellow at UMCS (Lublin, Poland), University of Idaho (Moscow, Idaho), University of Florida (Gainesville) and Kansas University Medical School (Kansas City). Dr. Krol is experienced in molecular microbiology, genetic engineering and bioinformatics, microbial genetics, bacterial plasmids and biofilms. At CAMI he works mainly on bacterial genomics, the human microbiome, bacterial identification and localization and anti-biofilm drug development. He manages the CAMI labs.


Dr. Król is the author or co-author of more than 80 research abstracts and posters presented at national and international conferences.

"SMU.746-747, a putative membrane permease complex, is involved in aciduricity, acidogenesis, and biofilm formation in Streptococcus mutans"
J. Król, S. Biswas, C. King, I. Biswas
J. Bacteriol., doi:10.1128/JB.00960-13. IF-3.194, cited 0 (2013)

"Invasion of E. coli biofilms by antibiotic resistance plasmids"
J. Król, A. Wojtowicz, L. Rogers, H. Heuer, K. Smalla, S.M. Krone, E.M. Top
Plasmid 70, 110-119. IF-1.547, cited 1 (2013)

"Genomic and functional analysis of the IncP-1β plasmids pWDL7::rfp and pNB8c explains their role in chloroaniline catabolism"
J. Król, J.T. Penrod, H. McCaslin, L.M. Rogers, H. Yano, A. Stancik, W. Dejonghe, C.J. Brown, R.E. Parales, S. Wuertz, E.M. Top
Appl. Environ. Microbiol., 78, 828-838. IF-4.406, cited 7 (2012)

"Increased transfer of a multidrug resistance plasmid in Escherichia coli biofilms at the air-liquid interface"
J. Król, H-D. Nguyen, L. Rogers, H. Beyenal, S.M. Krone, E.M. Top
Appl. Environ. Microbiol., 77, 5079-5088. IF-4.406, cited 17 (2011)

"A dual reporter system for in situ detection of plasmid transfer in aerobic and anaerobic conditions"
J. Król, L. Rogers, S.M. Krone, E.M. Top
Appl. Environ. Microbiol., 76, 4553-4556. IF- 4.406, cited 5 (2010)

"Accounting for mating pair formation in plasmid population dynamics"
X. Zhong, J. Król, E.M. Top, S.M. Krone
J. Theor. Biol., 262, 711-719. IF-2.496, cited 10 (2009)

"Plasmids captured in C. metallidurans CH34: defining the PromA family of broad-host-range plasmids"
G.A. Van der Auwera, J. Król, H. Suzuki, B. Foster, R. Van Houdt, C.J. Brown, M. Mergeay, E.M. Top
Ant. Van Leeuwenhoek, 96:193-204. IF-2.09, cited 19 (2009)

"Comparative genomics of pAKD4, the prototype IncP-1delta plasmid with a complete backbone"
D. Sen, H. Yano, H. Suzuki, J. Król, L. Rogers, C.J. Brown, E.M. Top
Plasmid, 63:98-107. IF- 1.547, cited 14 (2009)

"The incomplete substitution of lipopolysaccharide with O-chain prevents the establishment of effective symbiosis between Mesorhizobium loti NZP2213.1 and Lotus corniculatus"
A. Turska-Szewczuk, B. Lotocka, J. Kutkowska, J. Król, T. Urbanik-Sypniewska, R. Russa
Microbiol. Res., 164:163-73. IF-2.889, cited 6 (2009)

"Application of physical and genetic map of Rhizobium leguminosarum bv. trifolii TA1 to comparison of three closely related rhizobial genomes"
J. Król, A. Mazur, M. Marczak, A. Skorupska
MGG, 279:107-121. IF-2.881, cited 4 (2008)

"Construction of Rhizobium leguminosarum bv. trifolii genome map and its application in comparative genomics of closely related rhizobia"
J. Król, A. Mazur, M. Marczak, A. Skorupska
Genomics, 89:237-247. IF-3.01, cited 4 (2007)

"Syntenic arrangements of the surface polysaccharide biosynthesis genes in Rhizobium leguminosarum"
J. Król, A. Mazur, M. Marczak, A. Skorupska
Genomics 2007 89, 2, 237-247. IF-3.01, cited 18 (2007)

"An alpha-1 chain of type I collagen Sp1-binding site polymorphism in women suffering from stress urinary incontinence"
P. Skorupski, J. Król, J. Starega, A. Adamiak, K. Jankiewicz, T. Rechberger
Am J Obstet Gynecol., 194, 346-350. IF-3.877, cited 34 (2006)

"Propionibacterium – a pathogen, an opportunistic microorganism"
A. Chudnicka, J. Król, M. Koziol-Montewka, A. Bogut
Polish J. Environ. Stud., 15, 2b, 1038-1041 (2006)

"Lipoprotein PssN of Rhizobium leguminosarum bv. trifolii: subcellular localization and possible involvement in exopolysaccharide export"
M. Marczak, A. Mazur, J. Król, W.I. Gruszecki, A. Skorupska
J. Bacteriol., 188, 6943-6952. IF-3.194, cited 12 (2006)

"Rhizobial exopolysaccharides: genetic control and symbiotic functions"
A. Skorupska, M. Janczarek, M. Marczak, A. Mazur, J. Król
Microb. Cell Fact., 16, 5-17. IF-3.31, cited 110 (2006)

"Topological and transcriptional analysis of pssL gene product: a putative Wzx-like exopolysaccharide translocase in Rhizobium leguminosarum bv. trifolii TA1"
A. Mazur, M. Marczak, J. Król, A. Skorupska
Arch. Microbiol., 184, 1-10. IF-1.43, cited 22 (2005)

"Complexity of phenotypes and symbiotic behaviour of Rhizobium leguminosarum biovar trifolii exopolysaccharide mutants"
J. Wielbo, A. Mazur, J. Król, M. Marczak, J. Kutkowska, A. Skorupska
Arch. Microbiol., 182, 331–336. IF-1.43, cited 14 (2004)

"Membrane topology of PssT, the transmembrane protein component of the type I exopolysaccharide transport system in Rhizobium leguminosarum bv. trifolii strain TA1"
A. Mazur, J. Król, M. Marczak, A. Skorupska
J. Bacteriol., 185, 2503-2511. IF-3.194, cited 25 (2003)

"Rhizobium leguminosarum bv. trifolii PssP protein is required for exopolysaccharide biosynthesis and polymerization"
J. Król, J. Wielbo, T. Urbanik-Sypniewska, A. Skorupska
MPMI, 14, 388-397. IF-4.43, cited 23 (2002)

"Mutation in the pssB-pssA intergenic region of Rhizobium leguminosarum bv. trifolii affects the surface polysaccharides synthesis and nitrogen fixation ability"
M. Janczarek, J. Król, J. Kutkowska, A. Mazur, J. Wielbo, W. Borucki, J. Kopcinska, B. Lotocka, T. Urbanik-Sypniewska, A. Skorupska
J Plant Physiol., 158, 1565-1574. IF-2.699, cited 12 (2001)

"Isolation and Sequencing of Rhizobium leguminosarum bv. trifolii PssN, PssO and PssP Genes Encoding the Proteins Involved in Polymerization and Translocation of Exopolysaccharide"
A. Mazur, J. Król, A. Skorupska
Mitochondrial DNA, 12, 1-12. IF-1.705, cited 8 (2001)

"The pssB gene products of Rhizobium leguminosarum bv trifolii is homologous to a family of inositol monophosphatase"
M. Janczarek, J. Król, A. Skorupska
FEMS Microbiol. Lett., 173, 319-325. IF-2.049, cited 19 (1999)

"Molecular characterization and symbiotic importance of prsD gene of Rhizobium leguminosarum bv. trifolii TA1"
A. Mazur, J. Wielbo, J. Król, J. Kopcinska, B. Lotocka, W. Golinowski, A. Skorupska
Acta Bioch. Polon., 45, 1067-1073. IF-1.595, cited 2 (1998)

"Molecular characterization of pssCDE genes of Rhizobium leguminosarum bv. trifolii strain TA1: pssD mutant is affected in exopolysaccharide synthesis and endocytosis of bacteria"
J. Król, J. Wielbo., A. Mazur., J. Kopcinska, B. Lotocka, W. Golinowski, A. Skorupska
Mol. Plant-Microbe Interact., 11.1142-1148. IF-4.43, cited 28 (1998)

"Identification of the genes in Rhizobium leguminosarum bv. trifolii whose products are homologues to a family of ATP-binding proteins"
J. Król, A. Skorupska
Microbiology 143, 1389-1394. IF-2.852, cited 14 (1997)

"The clover (Trifolium sp.) and Rhizobium leguminosarum bv. trifolii symbiosis: a system for study the significance of acidic polysaccharides"
J. Król, M. Janczarek, A. Wojcieszuk, A. Skorupska
Bull. Polish Academy of Science, 44, 1-5 (1996)

"Nodulation response of exopolysaccharide deficient mutants of Rhizobium leguminosarum bv. trifolii to addition of acidic polysaccharide"
A. Skorupska, J. Król
Microbiol. Res., 150;297-303. IF-2.889, cited 1 (1995)


"A genomic approach to analyse polysaccharide biosynthesis genes in Rhizobium leguminosarum bv. Trifolii"
Satelite meeting on Genomics of Nitrogen-Fixing Organisms, 7-th European Nitrogen Fixation Conference, Aarhus, Denmark (2006)

"Genome analysis of Rhizobium leguminosarum bv. trifolii"
The First Baltic Sea Region Symposium and Postgraduate Course "Agro-biotechnology focused on root-microbe systems," Kaunas, Lithuania (2005)

"Identification of pssNOP genes of Rhizobium leguminosarum bv. trifolii"
The Third European Nitrogen Fixation Conference, Lunteren, the Netherlands (1998)