Julia Anne Maresca

PhD, The Pennsylvania State University

Associate Professor

Office: 344B DuPont Hall
Phone: 302-831-4391
Curriculum Vitae:  view

[ Short Bio | Education | Select Publications | Courses ]

Short Bio

I use high-throughput sequencing, bacterial genetics, and physiology to examine microbial responses to environmental inputs. Current projects in my lab include analysis of bacterial communities in and on weathering concrete, visualization of rhodopsins in aquatic environments, light-sensing by heterotrophic Actinobacteria, and phosphorus acquisition in in an oligotrophic ferruginous tropical lake.


1999: BA, University of Chicago
2007: PhD, The Pennsylvania State University

Select Publications

J.A. Maresca, P. Moser, T. Schumacher. Bacterial communities in and on concrete. 2017. Materials and Structures 50: 25. doi:10.1617/s11527-016-0929-y
J. Tian; V. (Beneski) Miller; P.C. Chiu; J.A. Maresca; M. Guo, P.T. Imhoff. Nutrient release and ammonium sorption of poultry litter and wood biochars in stormwater treatment. 2016.  Science of the Total Environment 553: 596–606. doi:10.1016/j.scitotenv.2016.02.129
M. Yao, C. Henny, J.A. Maresca. Freshwater bacteria release methane as a byproduct of phosphorus acquisition and oxidation. 82: 6994-7003. 2016. Applied and Environmental Microbiology. doi:10.1128/AEM.02399-16
M. Yao, F. Elling, CA. Jones, C.P. Long, S. Nomosatryo, S.A. Crowe, M.R. Antoniewicz, K.-U. Hinrichs, J.A. Maresca. Heterotrophic bacteria from an extremely phosphate-poor lake have conditionally reduced phosphorus demand and utilize diverse sources of phosphorus. In press, Environmental Microbiology. doi:10.1111/1462-2920.13063

J.L. Keffer, C.R. Sabanayagam, M.E. Lee, E.F. DeLong, M.W. Hahn, J.A. Maresca. Identifying rhodopsin-containing cells using TIRF microscopy. 2015. Applied and Environmental Microbiology, 81 (10): 3442-3450. doi:10.1128/AEM.00230-15.

J.L. Keffer, M.W. Hahn, J.A. Maresca. Characterization of a novel freshwater rhodopsin from Rhodoluna lacicola. 2015. Journal of Bacteriology, 197(16): 2704-2712. doi: 10.1128/JB.00386-15
A.L. Zerkle, K. Scheiderich, J.A. Maresca, L.J. Liermann, and S.L. Brantley. 2011. Molybdenum isotope fractionation by cyanobacterial assimilation during nitrate utilization and N2 fixation. Geobiology, 9(1):94-106.
J.A. Maresca, J.C. Braff, and E.F. Delong. 2009. Characterization of canthaxanthin biosynthesis genes from an uncultured marine bacterium. Environmental Microbiology Reports, 1: 524-534.
J.A. Maresca, S.P. Romberger, and D.A. Bryant. 2008. Isorenieratene biosynthesis in green sulfur bacteria requires the cooperative actions of two carotenoid cyclases. Journal of Bacteriology, 190: 6384-6391.
J.A. Maresca, J.E. Graham, and D.A. Bryant. 2008. The biochemical basis for structural diversity in the carotenoids of phototrophic bacteria. Photosynthesis Research, 97: 121-140.
J.A. Maresca, J.E. Graham, M. Wu, J. Eisen, and D.A. Bryant. 2007. Identification of a new family of lycopene cyclases in photosynthetic bacteria. Proceedings of the National Academy of Sciences, 104: 11784-11789.
Bryant, D. A., A.M. Garcia Costas, J.A. Maresca, A. Gomez Maqueo Chew, C.G. Klatt, M.M. Bateson, L.J. Tallon, J. Hostetler, W.C. Nelson, J.F. Heidelberg, and D.M. Ward. 2007. Chloracidobacterium thermophilum: an aerobic phototrophic acidobacterium. Science, 317: 523-526.
Kim, H., H. Li, J.A. Maresca, D.A. Bryant, and S. Savikhin. 2007. Triplet exciton formation as a novel photoprotection mechanism in chlorosomes of Chlorobium tepidum. Biophys. J., 93: 192-201.
J.A. Maresca and D.A. Bryant. 2006. Identification of two genes encoding new carotenoid-modifying enzymes in the green sulfur bacterium Chlorobium tepidum. Journal of Bacteriology, 188: 6217-6223.
R.E. Ley, J.K. Harris, J. Wilcox, J.R .Spear, S.R. Miller, B.M. Bebout, J.A. Maresca, D.A. Bryant, N.R. Pace. 2006. Unprecedented bacterial community diversity and complexity in a hypersaline microbial mat. Applied and Environmental Microbiology, 72: 3685-3695.
A.R. Brannon, J.A. Maresca, J.D. Boeke, M.A. Basrai, and A.A. McBride. 2005. Reconstitution of BPV E2-mediated plasmid segregation in yeast by the Brd4 bromodomain protein. Proceedings of the National Academy of Sciences 102 (8): 2998-3003.
N.-U. Frigaard, J.A. Maresca, C.E. Yunker, A.D. Jones, and D.A. Bryant. 2004. Genetic manipulation of carotenoid biosynthesis in the green sulfur bacterium Chlorobium tepidum. Journal of Bacteriology 186: 5210-5220.
J.A. Maresca, A. Gomez Maqueo Chew, M. Ros Ponsatí, N-U. Frigaard, J.G. Ormerod, and D.A. Bryant. 2004. The bchU gene of Chlorobium tepidum encodes the C-20 methyltransferase in bacteriochlorophyll c biosynthesis. Journal of Bacteriology 186 (9): 2558-2566.
N-U Frigaard, A. Gomez Maqueo Chew, H. Li, J.A. Maresca, D.A. Bryant. 2003. Chlorobium tepidum: insights into the structure, physiology, and metabolism of a green sulfur bacterium derived from the complete genome sequence. Photosynthesis Research 78: 93-117.
EK Dimitriadis, F. Horkay, J. Maresca, B. Kachar, RS Chadwick. 2002. Determination of elastic moduli of soft, thin samples using the atomic force microscope. Biophysical Journal 82(5): 2798-810.
A. Krol, J. Maresca, M. Dewhirst, F. Yuan. 1999. Available volume fraction of macromolecules in the extravascular space of a fibrosarcoma: Implications for drug delivery. Cancer Research 59: 4136-4141.

Courses Taught

Fall CIEG 437 Water Quality Analysis
Spring CIEG 444/644 Microbiology of Engineered Systems

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