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Michael V Mickelbart

Horticulture and Landscape Architecture 

  • Associate Professor
765.494.7902
765.494.0391
WSLR Room B024
170 S. University St.
West Lafayette, IN 47907

Botany and Plant Pathology 

  • Associate Professor
765.494.7902
765.494.0391
WSLR Room B024
170 S. University St.
West Lafayette, IN 47907

 

Water is an increasingly limited resource in all areas of the world. The Mickelbart lab uses a number of approaches to understand the genetic basis of WUE, utilizing model C3 broadleaf (Arabidopsis, Eutrema, and Populus) and C4 grass (Zea mays) species. Work to date has established that WUE can be improved through slight reductions in transpiration without a concomitant reduction in carbon fixation (Yoo et al., 2009). Furthermore, the lower transpiration appears to be related to a reduction in stomatal density (Yoo et al., 2011). Identification of a transcriptional regulator of stomatal development, GTL1, has led to a better understanding of stomatal development, transpiration, and WUE in Arabidopsis (Yoo et al., 2010). Importantly, the function of GTL1 is conserved in poplar (Weng et al., 2012), demonstrating that the negative regulatory pathway of stomatal development identified in Arabidopsis is also present in a model and economically important woody species. To better understand the role of stomata in water use efficiency and adaptation to the environment, genome-wide association mapping was used to identify candidate genes in Arabidopsis (manuscripts in preparation). Work in maize has demonstrated genetic diversity for WUE among maize genotypes, particularly with respect to transpirational response to vapor pressure deficit (manuscripts in preparation).  Genetic regions associated with WUE have been identified in Thellungiella salsuginea, a model halophyte plant and candidate genes are currently being characterized.

Awards & Honors

(2015) Benjamin Meeker Visiting Professor. University of Bristol, Bristol, UK.

(2012) Fulbright Visiting Scientist Fellowship. Universidad ICESI, Cali, Colombia.

(2011) Borlaug Fellowship Visiting Scientist. National Research Center on Plant Biotechnology, New Delhi, India.

Selected Publications

Mickelbart, M., Hasegawa, P., & Bailey-Serres, J. (2015). Genetic mechanisms of abiotic stress tolerance that translate to crop yield stability. Nature Reviews Genetics, 16, 237-251. Retrieved from http://www.nature.com/nrg/journal/v16/n4/abs/nrg3901.html

Yin, J., Gribscov, M., Thimapurram, J., Dilkes, B., & Mickelbart, M. (2015). Transcriptomic differences between two Eutrema salsugineum accessions and quantitative trait loci identified from bulk segregant analysis of an F2 population. Plant and Animal Genome Xxiii. Retrieved from https://pag.confex.com/pag/xxiii/webprogram/Paper17854.html

Yin, J., Gribscov, M., Dilkes, B., Thimmapuram, J., & Mickelbart, M. (2014). Candidate genes associated with water use efficiency (WUE) identified from quantitative trait loci (QTL) mapping in Eutrema salsugineum. ASPB Midwest Section Meeting 2014.

Anwar, R., Ragathama, A., Jairam, P., Fatima, S., Gosney, M., Mickelbart, M., & Handa, A. (2014). Characterization of drought response of transgenic tomato plants expressing spermidine synthase under constitutive or fruit-specific promoters. ASHS Annual Meeting 2015. Retrieved from https://ashs.confex.com/ashs/2014/webprogram/Paper19594.html

Schaffer, B., Gil, P., Mickelbart, M., & Whiley, A. (2014). Ecophysiology. In The Avocado: Botany Production and Uses, 2nd Edition (2nd Ed., 168-199). Wallingford, UK: CAB International Press.

Bumgarner, M., Salifu, K., Mickelbart, M., & Jacobs, D. (in press). Effects of fertility applied through sub-irrigation on media characteristics and red oak seedling morphology and physiology. HortScience.

Mickelbart, M., Gosney, M., & Stanton, K. (2014). Evaluation of accessions of Spiraea alba and S. tomentosa in Indiana. Native Plants Journal, 14, 17äóñ23.

Smith, C., Wang, L., & Mickelbart, M. (2014). Identifying candidate genes that affect epidermal development. Summer Undergraduate Research Fellowship Symposium. Retrieved from http://docs.lib.purdue.edu/surf/2014/presentations/1/

Brown, C., Mickelbart, M., & Jacobs, D. (2014). Leaf physiology and biomass allocation of American chestnut (Castanea dentata) seedlings in response to light and water availability. Tree Physiology, 34, 1362-1375.

Baxter, I., Zeigler, G., Lahner, B., Mickelbart, M., Foley, R., Danku, J., . . . Hoekenga, O. (2014). Single kernel ionomic profiles are highly heritable indicators of genetic and environmental influences on elemental uptake in maize (Zea mays) PLoS One, 9, 9(1): e87628. Retrieved from http://doi:10.1371/journal.pone.0087628

Botany and Plant Pathology, 915 West State Street, West Lafayette, IN 47907 USA, (765) 494-4614

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