| |
Dr.
Camille Steber
.jpg) 509-335-2887
csteber@wsu.edu
Molecular
Geneticist with USDA-ARS, Assistant Professor (Adjunct) of Crop
and Soil Sciences. Ph.D.1996, University of Chicago.
Research
Seed
dormancy and germination are controlled by a complex web of
plant hormone interactions. While GA stimulates germination,
abscisic acid (ABA) inhibits germination and is required for
establishment of seed dormancy. We recently found that brassinosteroid
(BR) is also needed to stimulate germination. Our research objectives
are to 1) identify genes involved in GA signal transduction,
2) test the hypothesis that the F-box gene SLEEPY1 of Arabidopsis
transmits the GA signal by directing degradation of the RGA/GAI
family of transcription factors, 3) elucidate the interactions
between the plant hormone signaling pathways controlling germination
and 4) apply the knowledge gained to controlling preharvest
sprouting in wheat.
Slides
Selected
Publications
Zale, J.M., Borschardt-Wier, H., Kidwell, K.K.
and Steber, C.M. 2004. Callus Induction and Plant Regeneration
from Mature Embryos of a Diverse Set of Wheat Genotypes. Plant
Cell Org. Cul. 76:277-281.
Strader, L.C., Zale, J.M. and Steber, C.M. 2004.
Mutation and Transposon-Based Approaches for Identification of
Genes for Pre-Harvest Sprouting in Wheat. Symposium Proceedings,
In Vitro Cell Dev. Biol. - Plant 40:256-259.
Dill, A., Thomas, S.G., Hu, J., Steber, C.M. and
Sun, T.-p. 2004. The Arabidopsis F-box protein SLEEPY1 targets
gibberellin signaling repressors for gibberellin-induced degradation.
Plant Cell 16:1392-1405.
Strader, L.C., Ritchie, S., Soule, J.D., McGinnis,
K.M. and Steber, C.M. 2004. Recessive-interfering mutations in
the GA-response gene SLEEPY1 are rescued by overexpression of
its homologue SNEEZY. Proc. Natl. Acad. Sci. USA 101:12771-12776.
McGinnis, K.M., Thomas, S.G., Soule, J.D., Strader,
L.C., Zale, J.M., Sun, T.-p. and Steber, C.M. 2003. The Arabidopsis
SLEEPY1 Gene Encodes a Putative F-Box Subunit of an SCF E3 Ubiquitin
Ligase. Plant Cell 15:1120-1130.
Akhunov, E.D., Goodyear, A.W., Geng, S., Qi, L.L.,
Echalier, B., Gill, B.S., Miftahudin, Gustafson, J.P., Lazo, G.,
Chao, S., Anderson, O.D., Linkiewicz, A.M., Dubcovsky, J., Rota,
M.L., Sorrells, M.E., Zhang, D., Nguyen, H.T., Kalavacharla, V.,
Hossain, K., Kianian, S.F., Peng, j., Lapitan, N.L., Gonzalez-Hernandez,
J.L., Anderson, J.A., Choi, D.W., Close, T.J., Dilbirligi, M.,
Gill, K.S., Walker-Simmons, M.K., Steber, C., McGuire, P.E., Qualset,
C.O. and Dvorak, J. 2003. The Organization and Rate of Evolution
of Wheat Genomes are Correlated with Recombinantion Rates Along
Chromosome Arms. Genome Res. 13:753-763.
Sorrells, M.E., La Rota, M., Bermudez-Kandianis,
C.E., Greene, R.A., Kantety, R., Munkvold, J.D., Miftahudin, Mahmoud,
A., Ma, X., Gustafson, P.J., Qi, L.L., Echalier, B., Gill, B.S.,
Matthews, D.E., Lazo, G.R., Chao, S., Anderson, O.D., Edwards,
H., Linkiewicz, A.M., Dubcovsky, J., Akhunov, E.D., Dvorak, J.,
Zhang, D., Nguyen, H.T., Peng, J., Lapitan, N.L., Gonzalez-Hernandez,
J.L., Anderson, J.A., Hossain, K., Kalavacharla, V., Kianian,
S.F., Choi, D.W., Close, T.J., Dilbirligi, M., Gill, K.S., Steber,
C., Walker-Simmons, M.K., McGuire, P.E. and Qualset, C.O. 2003.
Comparative DNA Sequence Analysis of Wheat and Rice Genomes. Genome
Res. 13:1818-1827.
Itoh, H., Matsuoka, M. and Steber, C. 200. A Role
for the Ubiquitin-26S-Proteasome Pathway in Gibberellin Signaling.
Trends Plant Sci. 10:492-497.
|
|
|
|
|
|
