305 Tucker Hall
University of Missouri
Columbia, MO 65211
Phone: (573) 882-3583
Research Experience and Education
Postdoctoral Fellow, 2011-present, MU
Ph.D., 2001, University of Nevada
B.S., 1996, James Madison University
My research focuses on understanding molecular mechanisms involved in helping plants adapt to and respond to the environment. Plants can shed organs such as leaves or flowers in response to many environmental conditions like drought or pathogen attack. Developmental cues also regulate the timing of organ abscission (shedding). Elegant molecular regulatory networks tie together abscission, the drought response, pathogen defense, and plant development. It is our hope that understanding these regulatory networks will lead to an increased fundamental understanding of how plants work and also provide avenues for crop improvement. More research details and numerous video and print protocols can be found on my website.
(Full list at Google Scholar)
Patharkar OR (2018) Quantification of cauline leaf abscission in response to plant pathogens. Methods Mol Biol. In press.
Patharkar OR, Gassmann W, Walker JC (2017) Leaf shedding as an anti-bacterial defense in Arabidopsis cauline leaves. PLoS Genet. 13(12): e1007132.
Patharkar OR, Walker JC (2017) Advances in abscission signaling.J Exp Bot. doi: 10.1093/jxb/erx256
Patharkar OR, Walker JC (2016) Core mechanisms regulating developmentally timed and environmentally triggered abscission. Plant Physiol. 172, 511
Patharkar OR, Macken TA, Walker JC (2016) Serine 231 and 257 of Agamous-like 15 are phosphorylated in floral receptacles. Plant Signal Behav. 11 (7), e1199314
Patharkar OR, Walker JC (2015) Floral organ abscission is regulated by a positive feedback loop. PNAS. 112(9):2906-11.
Nemali KS, Bonin C, Dohleman FG, Stephens M, Reeves WR, Nelson DE, Castiglioni P, Whitsel JE, Sammons B, Silady RA, Anstrom D, Sharp RE, Patharkar OR, Clay D, Coffin M, Nemeth MA, Leibman ME, Luethy M, Lawson M. (2014) Physiological responses related to increased grain yield under drought in the first biotechnology-derived drought-tolerant maize. Plant Cell Environ. doi: 10.1111/pce.12446
Niederhuth CE, Patharkar OR, Walker JC (2013) Transcriptional profiling of the Arabidopsis abscission mutant hae hsl2by RNA-Seq. BMC Genomics. 14:37.