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Research Program
The goals of my research are to further our understanding
of plant response to abiotic environmental stresses, to identify potential targets for
future crop improvement, and to identify genes responsible for desirable stress tolerance
traits. Our research has indicated that sink organ development during cell division and
primordial phases is especially responsive to environment, so we are determining the
mechanisms by which environmental stresses arrest sink-organ development (especially
reproductive organs and kernels), alter phytohormone levels and modify the expression of
gene products involved in cell proliferation. All of our studies deal with plant responses to environmental conditions, especially water deficit, temperature extremes, and elevated
atmospheric CO2. Studies on maize reproductive development concern
the influence of water deficit on abscisic acid and cytokinin levels, on sugar fluxes in
grain tissues, and regulatory proteins. We use DNA microarrays to profile gene expression,
collaborate on mapping genetic loci, and use a functional genomics approach to identify the roles that changes in these regulatory factors play in altering the expression of genes associated with stress response.
Further information
Courses Taught
He teaches courses at the graduate level on the physiology and ecology of crop yield (CSS 613), water status assessment techniques (CSS 608), and the physiology of responses to environmental stresses (CSS 610). |
Selected Publications
Setter T.L., Fregene M.A. (2007) Recent advances in molecular breeding of cassava for improved drought stress tolerance. p. 701-711 In Advances in Molecular Breeding Towards Salinity and Drought Tolerance. M.A. Jenks, P.M. Hasegawa and S.M.Jain (ed.), Springer, New York. On-line access:
http://www.springerlink.com/content/v13h781mpqp2442t/
Setter T.L. (2006) The role of abscisic acid
under water-limited conditions. pp. 505-530 In Drought Adaptation in Cereals
, J.M. Ribaut(ed.), Food Products Press, New York. access:
http://www.haworthpress.com/store/
Melkonian J., Yu L.-X., Setter T.L. (2004) Chilling responses of maize (Zea mays L.) seedlings: root hydraulic conductance, abscisic acid, and stomatal conductance. Journal of Experimental Botany 55: 1751-1760. web access:
http://jxb.oupjournals.org/cgi/content/abstract/55/403/1751
Alves A.A.C., Setter T.L. (2004) The Response of cassava leaf area expansion to water deficit. Cell proliferation, cell expansion, and delayed development. Annals of Botany 94:605-613. web access:
http://aob.oupjournals.org/cgi/content/abstract/94/4/605/
Alves A.A.C., Setter T.L. (2004) Abscisic acid accumulation and osmotic adjustment in cassava under water deficit. Environmental & Experimental Botany 51: 259-271. web access:
http://dx.doi.org/10.1016/j.envexpbot.2003.11.005
Yu L.X., Setter T.L. (2003) Comparative transcriptional profiling of placenta and endosperm in developing maize kernels in response to water deficit. Plant Physiology 131: 568-582 (note correction for Table I due to printer's error) web access to corrected copy: http://www.css.cornell.edu/faculty/tls1/pp.014365v1.pdf
Chen C.-T., Setter T.L. (2003) Response of potato tuber cell division and growth to shade and elevated CO2. Annals of Botany 91: 373-381
Wang Z., Mambelli S., Setter T.L. (2002) Abscisic acid catabolism in maize kernels in response to water deficit at early endosperm development. Annals of Botany 90: 623-630.
Setter T.L., Flannigan B.A., Melkonian J. (2001) Loss of kernel set due to water deficit and shade in maize: Carbohydrate supplies, abscisic acid, and cytokinins. Crop Science 41: 1530-1540.web access: http://crop.scijournals.org/cgi/content/abstract/41/5/1530
Setter T.L., Flannigan B.A. (2001) Water deficit inhibits cell division and expression of transcripts involved in cell proliferation and endoreduplication in maize endosperm. Journal of Experimental Botany 52(360): 1401-1408
Jones R.J., Setter T.L. (2000) Hormonal regulation of early kernel development. pp. 25-42 In Physiology and Modeling Kernel Set in Maize, M.E. Westgate and K.J. Boote (eds.), Crop Science Society of America, Madison, WI
Alves A.A.C., Setter T.L. (2000) Response of cassava to water deficit: leaf area growth and abscisic acid. Crop Science 40:131-137
Sun Y., Flannigan B.A., Setter T.L. (1999) Regulation of endoreduplication in maize (Zea mays, L.) endosperm. Isolation of a novel B1-type cyclin and its quantitative analysis. Plant Molec. Biol. 41: 245-258.
Mugo SN, Smith ME, Banziger M, Setter TL, Edmeades GO, Elings A. (1998) Performance of early maturing Katumani and Kito maize composites under drought at
the seedling and flowering stages. African Crop Sci J 6: 329-344
Mambelli S, Setter TL (1998)
Inhibition of maize endosperm cell division and endoreduplication by exogenously applied abscisic acid. Physiol. Plant. 104: 266-272
Sun Y.J., Flannigan B.A.,
Madison J.T., Setter T.L. (1997) Alternative splicing of cyclin
transcripts in maize endosperm. Gene 195: 167-175
Artlip TS, Madison JT, Setter
TL (1995) Water deficit in developing endosperm of maize: cell
division and nuclear endoreduplication. Plant, Cell & Environment 18:1034-1040
Setter TL (1993) Assimilate
allocation in response to water deficit stress. p. 733-739 In:
DR Buxton (ed) International Crop Science I, Chapter 97. Crop
Science Society of America, Madison Wisconsin
Lur HS, Setter TL (1993) Role
of auxin in maize endosperm development. Timing of nuclear DNA
endoreduplication, zein expression, and cytokinin. Plant Physiology 103:273-280
other publications
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