Page Banner

United States Department of Agriculture

Agricultural Research Service

Catherine Reardon (Kate)


Kate Reardon


Educational Background:

I received a Ph.D. in microbiology in 2005 from Montana State University in Bozeman and a Bachelor of Science in 2001 from Idaho State University in Pocatello. 

Research Program:  Soil Microbiology


Current Research Projects:


The focus of the microbiology program is to develop new knowledge about microbial benefits derived from diversified crop rotations. The primary objective of the current research plan is to determine whether wheat-oilseed rotations compared to traditional winter wheat-summer fallow provide belowground benefits from changes in the soil microbiology such as increased nitrogen availability, improved soil structure, and reduced disease. DNA- and culture-based methods are being employed to (i) characterize and compare changes in the microbial diversity, composition and function in response to crop rotation, (ii) identify key changes in fungal and bacterial populations with relation to soil structure, and (iii) determine whether Brassica oilseed crops inhibit or “biofumigate” soil communities near the root (or rhizosphere).


Additional Research Projects:


USDA-NIFA, AFRI Competitive Grants Program Climate Change Research, 2011-2015. Project Title: Site-specific climate-friendly farming.  In collaboration with Washington State University-Pullman (David Brown, P.I.)


Peer Reviewed Publications:


Reardon, C.L., D.E. Cummings, L.M. Petzke, B.L. Kinsall, D.B. Watson, B.M. Peyton, and G.G. Geesey. 2004. Composition and diversity of microbial communities recovered from surrogate minerals incubated in an acidic uranium-contaminated aquifer. Appl. Environ. Microbiol. 70:6037-6046.


Bretschger, O., A. Obraztsova, C.A. Sturm, I.S. Chang, Y.A. Gorby, S.B. Reed, D.E. Culley, C.L. Reardon, S. Barua, M.F. Romine, J. Zhou, A.S. Beliaev, R. Bouhenni, D. Saffarini, F. Mansfeld, B.-H. Kim, J.K. Fredrickson, and K.H. Nealson. 2007. An exploration of current production and metal oxide reduction by Shewanella oneidensis MR-1 wild type and mutants. Appl. Environ. Microbiol. 73:7003-7012.


Geesey, G.G., T. Borch, C.L. Reardon. 2008. Resolving biogeochemical phenomena at high spatial resolution through electron microscopy. Geobiol. 6:263-269.


McLean, J.S., P.D. Majors, C.L. Reardon, C.L. Bilskis, S.B. Reed, M.F. Romine, J.K. Fredrickson. 2008. Investigations of structure and metabolism within Shewanella oneidensis MR-1 biofilms. J. Microbiol. Meth. 74:47-56.


Lower, B.H., R. Yongsunthon, L. Shi, L. Wildling, H.J. Gruber, N.S. Wigginton, C.L. Reardon, G.E. Pinchuk, T.C. Droubay, J.-F. Boily, and S.K. Lower. 2009. Antibody recognition force microscopy shows that outer membrane cytochromes OmcA and MtrC are expressed on the exterior surface of Shewanella oneidensis MR-1. Appl. Environ. Microbiol. 75:2931-2935.


Turick, C., A.S. Beliaev, B.A. Zakrajsek, C.L. Reardon, D. Lowy, T. Poppy, A. Maloney, and A. Ekechukwu. 2009. The role of 4-hydroxyphenylpyruvate dioxygenase in enhancement of solid-phase electron transfer by Shewanella oneidensis MR-1. FEMS Microbiol. Rev. 68:223-225.


Meitl, L., C.M. Eggleston, P.J.S. Colberg, N. Khare, C.L. Reardon, and L. Shi. 2009. Electrochemical interaction of Shewanella oneidensis MR-1 and its outer membrane cytochromes OmcA and MtrC with hematite electrodes. Geochim. Cosmochim. Acta 73:5292-5307.


Hartshorne, R.S., C.L. Reardon, D. Ross, J. Nuester, T.A. Clarke, A.J. Gates, P.C. Mills, J.K. Fredrickson, J.M. Zachara, L. Shi, A.S. Beliaev, M.J. Marshall, M. Tien, S. Brantley, J.N. Butt, and D.J. Richardson. 2009. Characterization of an electron conduit between bacteria and the extracellular environment. Proc. Natl. Acad. Sci. 106:22169-22174.


Reardon, C.L., A.C. Dohnalkova, P. Nachimuthu, D.W. Kennedy, D.A. Saffarini, B.W. Arey, L. Shi, Z. Wang, D. Moore, J.S. Mclean, D. Moyles, M.J. Marshall, J.M. Zachara, J.K. Fredrickson, and A.S. Beliaev. 2010. Role of outer-membrane cytochromes MtrC and OmcA in the biomineralization of ferrihydrite by Shewanella oneidensis MR-1. Geobiol. 8:56-68.


Clarke, T.A., M.J. Edwards, A.J. Gates, A. Hall, G.F. White, J. Bradley, C.L. Reardon, L. Shi, A.S. Beliaev, M.J. Marshall, Z. Wang, N.J. Watmough, J.K. Fredrickson, J.M. Zachara, J.N. Butt, and D.J. Richardson. 2011. Structure of a bacterial cell surface decaheme electron conduit. Proc. Natl. Acad. Sci. USA 108:9384-8389.


Pusey, P.L., V.O. Stockwell, C.L. Reardon, T.H.M. Smits, and B. Duffy. 2011. Antibiotic production by Pantoea agglomerans biocontrol strain E325 and activity against Erwinia amylovora on apple flower stigmas. Phytopath. 101:1234-1241.


Mitchell, A.C., L. Peterson, C.L. Reardon, S.B. Reed, D.E. Culley, M.R. Romine, and G.G. Geesey. 2012. Role of outer membrane c-type cytochromes MtrC and OmcA in Shewanella oneidensis MR-1 cell production, accumulation, and detachment during respiration on hematite. Geobiol. 10:355-370.


Mazzola, M., C.L. Reardon, and J. Brown. 2012. Initial Pythium species composition and Brassicaceae seed meal type influence extent of Pythium-induced plant growth suppression in soil. Soil Biol. Biochem. 48:20-27.


Weerakoon, D.M.N., C.L. Reardon, T.C. Paulitz, A.D. Izzo, and M. Mazzola. 2012. Long-term suppression of Pythium abappressorium induced by Brassica juncea seed meal amendment is biologically mediated. Soil Biol. Biochem. 51:44-52.


Reardon, C.L., S.L. Strauss, and M. Mazzola. 2013. Changes in nitrogen cycling and nematode abundance in response to Brassica seed meal amendment of orchard soil. Soil Biol. Biochem. 57:22-29.


Yan, G., R.W. Smiley, P.A. Okubara, A. Skantar, and C.L. Reardon. 2013. Developing a real-time PCR assay for detection and quantification of Pratylenchus neglectus in soil. Plant Dis. Published in First Look,


Williams, J.D., D.K. McCool, C.L. Reardon, C.L. Douglas, S.L. Albrecht, and R.W. Rickman. Root to shoot ratios and belowground biomass distribution for Pacific Northwest dryland crops. Accepted Nov 2012. J. Soil Water Conserv.


Reardon, C.L., T.S. Magnuson, E.S. Boyd, W.D. Leavitt, D.W. Reed, and G.G. Geesey. Hydrogenase activity of mineral-associated and suspended populations of Desulfovibrio desulfuricans Essex 6. Microb. Ecol. Submitted Sept. 2012, in revision for re-review.


Strauss, S.L., C.L. Reardon, and M.M. Mazzola. The effect of fertilizer amendments on ammonia-oxidation in orchard soils. Soil Biol. Biochem. Submitted Jan. 2013.

Last Modified: 4/9/2013
Footer Content Back to Top of Page