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                    U.S. DEPARTMENT OF AGRICULTURE
 Wheat Health, Genetics, and Quality Research: Pullman, WA
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Camille M Steber    Research Plant Molecular Geneticist The Steber Laboratory is part of the Wheat Health, Genetics, and Quality Research Unit, United States Department of Agriculture, Agricultural Research Service, and is housed in and affiliated with the Department of Crop and Soil Sciences, at Washington State University in Pullman, Washington. The principal investigator is Camille Steber, and the lab was started in 1998. The Steber Laboratory is focused on the study of hormonal control of seed dormancy and germination, as well as plant stress responses. Basic research projects are carried out in the Arabidopsis thaliana model system, and knowledge from Arabidopsis is translated into improved resista/ARSUserFiles/20903500/images/Vogel and Steber Lab.jpgnce to preharvest sprouting and drought tolerance in wheat. Seed dormancy and germination are controlled by the balance between the abscisic acid (ABA) and gibberellin (GA) hormone signalling pathways. ABA induces seed dormancy during embryo maturation, whereas GA stimulates seed germination and is associated with dormancy breaking treatments such as cold stratification and dry after-ripening. Research in Arabidopsis is focused on understanding the mechanisms of GA signaling, and the relative roles of ABA and GA in the control of seed dormancy, dormancy loss, and germination. In addition to stimulating seed germination, GA also stimulates stem elongation, the transition to flowering, and is required for full fertility. Research in wheat is aimed at increasing preharvest sprouting (PHS) and drought tolerance using increased ABA sensitivity.  The Steber Laboratory uses mutation breeding as a tool for wheat improvement. The main effort uses wheat mutants with altered response to the hormone ABA to control wheat grain dormancy and drought tolerance. Wheat production is subject to risk of yield loss due to drought and to preharvest sprouting (PHS), the germination of mature grain (caryopses) on the mother plant when cool moist conditions persist close to harvest time. When PHS occurs grain must be sold as feed, causing considerable economic losses to farmers. PHS is associated with lack of grain dormancy and sensitivity to the plant hormone abscisic acid (ABA) in wheat. ABA stimulates dormancy as well as adaptive responses to drought, cold and salt stress. Our research examines whether higher PHS tolerance is associated with higher ABA sensitivity or decreased GA sensitivity. Another major effort is a collaborative project with Dr. Kimberly Garland Campbell and Dr. Scot Hulbert to improve wheat drought tolerance through multiple mechanisms such as increased water use efficiency, mobilization of water-soluble carbohydrates, and altered root architecture. In an o/ARSUserFiles/20903500/images/Steber, Tractor, Greenhouse.jpgngoing collaboration with Dr. Kimberlee K. Kidwell and Dr. Ian Burke, the laboratory is helping to analyze wheat variants with increased resistance to the herbicide glyphosate. In the past, the laboratory made contributions to improving Rhizoctonia root rot tolerance, tissue culture, and developed a floral dip method for wheat transformation. See the publications page for more information on our work. More information about the lab can be found here: http://public.wsu.edu/~csteber/.             Publications(Clicking on the reprint iconReprint Icon  will take you to the publication reprint.)LMA or vivipary?  Wheat grain can germinate precociously during grain maturation under the cool conditions used to induce late maturity alpha-amylase (LMA)-(Peer Reviewed Journal)Seed dormancy loss through dry after-ripening may result from increasing gibberellin hormone levels-(Peer Reviewed Journal)An Independent Validation Reveals the Potential to Predict Hagberg-Perten Falling Number Using Spectrometers-(Peer Reviewed Journal) Chen, C., Hu, Y., Li, X., Cannon, A., Morris, C., Delwiche, S.R., Steber, C.M., Zhang, Z. 2023. An Independent Validation Reveals the Potential to Predict Hagberg-Perten Falling Number Using Spectrometers. The Plant Phenome Journal. 2023:6(1). https://doi.org/10.1002/ppj2.20070.Association of canopy temperature with agronomic traits in spring wheat inbred populations-(Peer Reviewed Journal) Shrestha, S.L., Garland-Campbell, K.A., Steber, C.M., Pan, W.L., Hulbert, S.H. 2022. Association of canopy temperature with agronomic traits in spring wheat inbred populations. Euphytica. 219. Article 7. https://doi.org/10.1007/s10681-022-03135-4.Streamlined alpha-amylase assays for wheat preharvest sprouting and late maturity alpha-amylase detection-(Peer Reviewed Journal) Hauvermale, A.L., Parveen, R.S., Harris, T., Tuttle, K.M., Mikhaylenko, G.G., Nair, S., McCubbin, A.G., Pumphrey, M.O., Steber, C.M. 2023. Streamlined alpha-amylase assays for wheat preharvest sprouting and late maturity alpha-amylase detection. Agrosystems, Geosciences & Environment. 6(1). Article e20327. https://doi.org/10.1002/agg2.20327.Gibberellin signaling expands to include the UBX domain protein PUX1, a new binding partner for GID1-(Peer Reviewed Journal) Hauvermale, A., Cardenas, J.J., Bednarek, S.Y., Steber, C.M. 2022. Gibberellin signaling expands to include the UBX domain protein PUX1, a new binding partner for GID1. Plant Physiology. 190(4):2651-2670. https://doi.org/10.1093/plphys/kiac406.As the Number Falls, Alternatives Advanced to the Hagberg-Perten Falling Number Method: a Review-(Peer Reviewed Journal) Hu, Y., Sjoberg, S.M., Chen, J., Hauvermale, A.L., Morris, C.F., Delwiche, S.R., Cannon, A., Steber, C.M., Zhang, Z. 2022. As the Number Falls, Alternatives Advanced to the Hagberg-Perten Falling Number Method: a Review. Comprehensive Reviews in Food Science and Food Safety. 21(3):2105-2117. https://doi.org/10.1111/1541-4337.12959.Registration of Castella soft white winter club wheat-(Peer Reviewed Journal) Garland Campbell, K.A., Carter, A.H., Allan, R., Chen, X., Steber, C.M., DeMacon, P., Esser, A., Higginbotham, R., Engle, D., Klarquist, E., Morris, C.F., Mundt, C., Murray, T., See, D.R., Wen, N. 2021. Registration of Castella soft white winter club wheat. Journal of Plant Registrations. 15(3):504-514. https://doi.org/10.1002/plr2.20132.The three-way interaction of varietal emergence capabilities, rht semi-dwarfing alleles, and GA3 seed application from deep planted wheat (Triticum aestivum L)-(Peer Reviewed Journal) Horgan, A.M., Garland Campbell, K.A., Carter, A.H., Steber, C.M. 2021. The three-way interaction of varietal emergence capabilities, rht semi-dwarfing alleles, and GA3 seed application from deep planted wheat (Triticum aestivum L). Agrosystems, Geosciences & Environment. 4(1). Article e20144. https://doi.org/10.1002/agg2.20144.Leaf temperature impacts whole plant water use efficiency independent of changes in leaf level water use efficiency-(Peer Reviewed Journal) Sexton, T.M., Steber, C.M., Cousins, A.B. 2021. Leaf temperature impacts whole plant water use efficiency independent of changes in leaf level water use efficiency. Journal of Plant Physiology. 258-259. Article 153357. https://doi.org/10.1016/j.jplph.2020.153357.Identifying the underlying mechanisms that lead to low falling number in wheat-(Proceedings)Application of the factor analytic model to assess wheat falling number performance and stability in multi-environment trials-(Peer Reviewed Journal) Sjoberg, S., Carter, A., Steber, C.M., Garland Campbell, K.A. 2020. Application of the factor analytic model to assess wheat falling number performance and stability in multi-environment trials. Crop Science. https://doi.org/10.1002/csc2.20293.Carbon isotope discrimination association with yield and test weight of the Pacific Northwest adapted spring and winter wheat-(Peer Reviewed Journal) Shrestha, S.L., Garland Campbell, K.A., Steber, C.M., Hulbert, S.H. 2020. Carbon isotope discrimination association with yield and test weight of the Pacific Northwest adapted spring and winter wheat. Field Crops Research. Vol 3, Issue 1. https://doi.org/10.1002/agg2.20052.Unravelling complex traits in wheat: approaches for analyzing genotype by environment interactions in a multi-environment study of falling numbers-(Peer Reviewed Journal) Sjoberg, S.M., Carter, A.H., Steber, C.M., Garland Campbell, K.A. 2020. Unravelling complex traits in wheat: approaches for analyzing genotype by environment interactions in a multi-environment study of falling numbers. Crop Science. 60,6:3013-3026. https://doi.org/10.1002/csc2.20133.Characterization of root traits for improvement of spring wheat in the Pacific Northwest-(Peer Reviewed Journal) Ghimire, B., Hulbert, S., Garland Campbell, K.A., Steber, C.M., Sanguinet, K. 2020. Characterization of root traits for improvement of spring wheat in the Pacific Northwest. Agronomy Journal. 112(1):228-240. https://doi.org/10.1002/agj2.20040.Exome sequencing of bulked segregants identified a novel TaMKK3-A allele linked to the wheat ERA8 ABA-hypersensitive germination phenotype-(Peer Reviewed Journal) Martinez, S.A., Shorinola, O., Conselman, S., See, D.R., Skinner, D.Z., Uauy, C., Steber, C.M. 2020. Exome sequencing of bulked segregants identified a novel TaMKK3-A allele linked to the wheat ERA8 ABA-hypersensitive germination phenotype. Theoretical and Applied Genetics. 133:719-736. https://doi.org/10.1007/s00122-019-03503-0.GA signaling is essential for the embryo-to-seedling transition during Arabidopsis seed germination, a ghost story-(Peer Reviewed Journal) Hauvermale, A.L., Steber, C.M. 2020. GA signaling is essential for the embryo-to-seedling transition during Arabidopsis seed germination, a ghost story. Plant Signaling and Behavior. 15(1):1-9. https://doi.org/10.1080/15592324.2019.1705028.Positive and negative regulation of seed germination by the Arabidopsis GA hormone receptors, GID1a, b, and c-(Peer Reviewed Journal) Ge, W., Steber, C.M. 2018. Positive and negative regulation of seed germination by the Arabidopsis GA hormone receptors, GID1a, b, and c. Plant Direct. 2(9):e00083. https://doi.org/10.1002/pld3.83.Falling number of soft wheat wheat by near-infrared spectroscopy: a challenge revisited-(Peer Reviewed Journal) Delwiche, S.R., Steber, C.M. 2018. Falling number of soft wheat wheat by near-infrared spectroscopy: a challenge revisited. Cereal Chemistry. 95(3):469-477.Genome-wide association mapping for tolerance to preharvest sprouting and low falling numbers in wheat-(Peer Reviewed Journal) Martinez, S.A., Godoy, J., Huang, M., Zhang, Z., Carter, A.H., Garland Campbell, K.A., Steber, C.M. 2018. Genome-wide association mapping for tolerance to preharvest sprouting and low falling numbers in wheat. Frontiers in Plant Science. 9:141. https://doi.org/10.3389/fpls.2018.00141.Biology in the dry seed: transcriptome changes associated with Arabidopsis seed dormancy and dormancy loss in the GA-insensitive sleepy1 mutant-(Peer Reviewed Journal) Nelson, S.K., Ariizumi, T., Steber, C.M. 2017. Biology in the dry seed: transcriptome changes associated with Arabidopsis seed dormancy and dormancy loss in the GA-insensitive sleepy1 mutant. Frontiers in Plant Science. https://doi.org/10.3389/fpls.2017.02158.Registration of the LouAlp (Louise/Alpowa) wheat recombinant inbred line mapping population-(Peer Reviewed Journal) Martinez, S.A., Thompson, A.L., Wen, N., Murphy, L.R., Sanguinet, K., Steber, C.M., Garland Campbell, K.A. 2018. Registration of the LouAlp (Louise/Alpowa) wheat recombinant inbred line mapping population. Journal of Plant Registrations. https://doi:10.3198/jpr2017.08.0053crmp.Transcriptional mechanisms associated with seed dormancy and dormancy loss in the gibberellin-insensitive sly1-2 mutant of Arabidopsis thaliana-(Peer Reviewed Journal) Nelson, S.K., Steber, C.M. 2017. Transcriptional mechanisms associated with seed dormancy and dormancy loss in the gibberellin-insensitive sly1-2 mutant of Arabidopsis thaliana. PLoS One. 12:(6)e0179143.Mutations conferring increased glyphosate resistance in spring wheat, Triticum aestivum (L.)-(Peer Reviewed Journal) Aramrak, A., Lawrence, N.C., Demacon, V.L., Carter, A.H., Kidwell, K.K., Burke, I.C., Steber, C.M. 2018. Mutations conferring increased glyphosate resistance in spring wheat, Triticum aestivum (L.). Crop Science. 58:84-97.Avoiding Low Falling Numbers Problems in Wheat-(Popular Publication) Steber, C.M. 2017. Avoiding Low Falling Numbers Problems in Wheat. Crops and Soils. Vol. 50, Issue 2, pages 22-25.Extension Facts:  Managing the risk of low falling numbers in wheat-(Experiment Station) Steber, C.M. 2016. Extension Facts:  Managing the risk of low falling numbers in wheat. WSU Extension Bulletin. FS242E.The wheat ABA hypersensitive ERA8 mutant is associated with increased preharvest sprouting tolerance and altered hormone accumulation-(Peer Reviewed Journal) Martinez, S.A., Tuttle, K.M., Takebayashi, Y., Seo, M., Garland Campbell, K.A., Steber, C.M. 2016. The wheat ABA hypersensitive ERA8 mutant is associated with increased preharvest sprouting tolerance and altered hormone accumulation. Euphytica. 212(2):229-245. https://link.springer.com/article/10.1007%2Fs10681-016-1763-6.Gibberellin hormone signal perception: down-regulating DELLA repressors of plant growth and development-(Book / Chapter) Nelson, S.K., Steber, C.M. 2016. Gibberellin hormone signal perception: down-regulating DELLA repressors of plant growth and development. Annual Plant Reviews. 49:153-188.Molecular and phylogenetic characterization of the homoeologous EPSP Synthase genes of allohexaploid wheat, Triticum aestivum (L.)-(Peer Reviewed Journal) Aramak, A., Kidwell, K., Steber, C.M., Burke, I. 2015. Molecular and phylogenetic characterization of the homoeologous EPSP Synthase genes of allohexaploid wheat, Triticum aestivum (L.). Biomed Central (BMC) Genomics. 16:844.Loss of Arabidopsis thaliana seed dormancy is associated with increased accumulation of the GID1 GA hormone receptors-(Peer Reviewed Journal) Hauvermale, A.L., Tuttle, K.M., Takebayashi, Y., Mitsunori, S., Steber, C.M. 2015. Loss of Arabidopsis thaliana seed dormancy is associated with increased accumulation of the GID1 GA hormone receptors. Plant Cell Physiology. 56(9):1773-1785.Grain dormancy loss is associated with changes in ABA and GA sensitivity and hormone accumulation in bread wheat, Triticum aestivum (L.)-(Peer Reviewed Journal) Tuttle, K.M., Martinez, S., Schramm, E.C., Takebayashi, Y., Seo, M., Steber, C.M. 2015. Grain dormancy loss is associated with changes in ABA and GA sensitivity and hormone accumulation in bread wheat, Triticum aestivum (L.). Seed Science Research. 25(2):179-193.Registration of Zak ERA8 soft white spring wheat germplasm with enhanced response to ABA and increased seed dormancy-(Peer Reviewed Journal) Martinez, S., Schramm, E.C., Harris, T.J., Kidwell, K.K., Garland Campbell, K.A., Steber, C.M. 2014. Registration of Zak ERA8 soft white spring wheat germplasm with enhanced response to ABA and increased seed dormancy. Journal of Plant Registrations. 8(2)217-220. DOI: 10.3198/jpr2013.09.0060crg.The roles of the GA receptors GID1a, GID1b, and GID1c in sly1-independent GA signaling-(Peer Reviewed Journal) Hauvermale, A., Ariizumi, T., Steber, C.M. 2014. The roles of the GA receptors GID1a, GID1b, and GID1c in sly1-independent GA signaling. Plant Signaling and Behavior. 9:e28030; PMID: 24521922.Lifting DELLA repression of Arabidopsis seed germination by nonproteolytic gibberellin signaling-(Peer Reviewed Journal) Ariizumi, T., Hauvermale, A.L., Nelson, S.K., Hanada, A., Yamaguchi, S., Steber, C.M. 2013. Lifting DELLA repression of Arabidopsis seed germination by nonproteolytic gibberellin signaling. Plant Physiology. 162(4):2125-39. doi: 10.1104/pp.113.219451.Increased ABA sensitivity results in higher seed dormancy in soft white spring wheat cultivar ‘Zak’-(Peer Reviewed Journal) Schramm, E.C., Nelson, S.K., Kidwell, K.K., Steber, C.M. 2012. Increased ABA sensitivity results in higher seed dormancy in soft white spring wheat cultivar ‘Zak’. Theoretical and Applied Genetics. 126(3):791-803 Available: http://link.springer.com/article/10.1007/s00122-012-2018-0/fulltext.html.Gibberellin signaling: a theme and variations on DELLA repression-(Review Article) Hauvermale, A.L., Ariizumi, T., Steber, C.M. 2012. Gibberellin signaling: a theme and variations on DELLA repression. Plant Physiology. 160:83-92 Available: http://www.plantphysiol.org/content/160/1/83.Wheat ABA-insensitive mutants result in reduced grain dormancy-(Peer Reviewed Journal) Schramm, E., Nelson, S.K., Steber, C.M. 2012. Wheat ABA-insensitive mutants result in reduced grain dormancy. Euphytica. 188(1),35-49. Published online March 31, 2012.Concerted action of two avirulent spore effectors activates Reaction to Puccinia graminis 1 (Rpg1)-mediated cereal stem rust resistance-(Peer Reviewed Journal) Nirmala, J., Drader, T., Lawrence, P.K., Yin, C., Hulbert, S., Steber, C.M., Steffenson, B.J., Szabo, L.J., Von Wettstein, D., Kleinhofs, A. 2011. Concerted action of two avirulent spore effectors activates Reaction to Puccinia graminis 1 (Rpg1)-mediated cereal stem rust resistance. Proceedings of the National Academy of Sciences. 108(35):14676-81.Mutations in the F-box gene SNEEZY result in decreased arabidopsis GA signaling-(Peer Reviewed Journal) Ariizumi, T., Steber, C.M. 2011. Mutations in the F-box gene SNEEZY result in decreased arabidopsis GA signaling. Plant Signaling and Behavior. 6(6):831-833.Investigating the role of ABA signaling in wheat drought tolerance-(Abstract Only) Pan, W., Schramm, E., Murphy, L.R., Garland Campbell, K.A., Steber, C.M. 2011. Investigating the role of ABA signaling in wheat drought tolerance. Meeting Abstract. www.intl-pag.org.The role of two F-box proteins, SLEEPY1 and SNEEZY, in arabidopsis GA signaling-(Peer Reviewed Journal) Ariizumi, T., Lawrence, P.K., Steber, C.M. 2011. The role of two F-box proteins, SLEEPY1 and SNEEZY, in arabidopsis GA signaling. Plant Physiology. 115:765-775.Gibberellin Signaling: a Wake-up Call for Seed Germination-(Abstract Only) Ariizumi, T., Steber, C.M. 2010. Gibberellin Signaling: a Wake-up Call for Seed Germination. Meeting Abstract. www.york.ac.uk/org/cnap/ISSS/ISSSseeddormancy.html.Isolation of ABA hypersensitive mutants in allhexaploid breadwheat-(Peer Reviewed Journal) Abellera, J.C., Strader, L.C., Schramm, E., Garland Campbell, K.A., Steber, C.M. 2010. Isolation of ABA hypersensitive mutants in allhexaploid breadwheat. Genetics. 179:620-629.Isolation of ABA-responsive mutants in allohexaploid bread wheat  (Triticum aestivum L.): Drawing connections to grain dormancy, preharvest sprouting, and drought tolerance-(Peer Reviewed Journal) Schramm, E.C., Abellera, J.C., Strader, L., Garland Campbell, K.A., Steber, C.M. 2010. Isolation of ABA-responsive mutants in allohexaploid bread wheat  (Triticum aestivum L.): Drawing connections to grain dormancy, preharvest sprouting, and drought tolerance. Plant Science. 179:620-629.Relieving DELLA Repression of Stem Elongation and Flowering, Evidence for a Proteolysis Independent Mechanism for GA signaling-(Abstract Only) Ariizumi, T., Steber, C.M. 2009. Relieving DELLA Repression of Stem Elongation and Flowering, Evidence for a Proteolysis Independent Mechanism for GA signaling. Meeting Abstract. www.aspb.org/meetings/pb-2009.Rhizoctonia Resistant Wheat -- Potential New Resources for Control for Soilborne Pathogens.-(Abstract Only)Evidence for stable transformation of wheat by floraldip in Agrobacterium tumefaciens-(Peer Reviewed Journal) Zale, J., Agarwal, S., Loar, S., Steber, C.M. 2009. Evidence for stable transformation of wheat by floraldip in Agrobacterium tumefaciens. Plant Cell Reports 28(6):903-913. DOI 10.1007/s00299-009-0696-0.EMS-treated hexaploid wheat genotype Scarlet has enhanced tolerance to the soilborne necrotrophic pathogens Rhizoctonia solani AG-8 and R. oryzae. 2009. Theor. Appl. Genet. 119(February): 293-303-(Peer Reviewed Journal) Okubara, P.A., Steber, C.M., Demacon, V.L., Walter, N., Paulitz, T.C., Kidwell, K.K. EMS-treated hexaploid wheat genotype Scarlet has enhanced tolerance to the soilborne necrotrophic pathogens Rhizoctonia solani AG-8 and R. oryzae. 2009. Theor. Appl. Genet. 119(February): 293-303. Theoretical and Applied Genetics.Chapter 6: Floral Transformation of Wheat-(Book / Chapter) Zale, J., Agarwal, S., Loar, S., Steber, C.M. 2008. Floral Transformation of Wheat, Chapter 6, pp. 105-113. IN: Huw D. Jones and Peter R. Shewry (eds.) Methods in Molecular Biology, Transgenic Wheat, Barley and Oats.  Humana Press, New York, NY.Controlling Soilborne Pathogens in Wheat Production Systems-(Abstract Only) Okubara, P.A., Schroeder, K.L., Paulitz, T.C., Steber, C.M., Kidwell, K. 2008. Controlling Soilborne Pathogens in Wheat Production Systems. Washington State University College of Agriculture and Home Economics. Page 37.EMS-generated Rhizoctonia resistance in an adapted wheat-(Abstract Only) Okubara, P.A., Steber, C.M., Paulitz, T.C., Kidwell, K.K. 2008. Ems-generated rhizoctonia resistance in an adapted wheat. Journal of Plant Pathology. S.350.(2)Proteolysis-independent down-regulation of DELLA repression by the gibberellin receptor GID1-(Peer Reviewed Journal) Ariizumi, T., Murase, K., Sun, T.P., Steber, C.M. 2008. Proteolysis-independent down-regulation of DELLA repression by the gibberellin receptor GID1. The Plant Cell, 20(9):2447-59.Molecular aspects of seed dormancy-(Review Article) Finkelstein, R., Reeves, W., Ariizumi, T., Steber, C.M. 2008. Molecular aspects of seed dormancy. Annu. Rev. Plant Biol. 59:387-415.ABA And GA Signaling, Bridging The Gap Between Wheat And Arabidopsis.-(Abstract Only) Schramm, E., Abellera, J., Strader, L.C., Steber, C.M. 2008. Aba and ga signaling, bridging the gap between wheat and arabidopsis.. Plant and Animal Genome Abstracts, Jan 12-16, San Diego, CA. W226.ABA AND GA SIGNALING, BRIDGING THE GAP BETWEEN WHEAT AND ARABIDOPSIS-(Abstract Only) Steber, C.M., Schramm, E., Abellera, J., Strader, L.C. 2007. Aba and ga signaling, bridging the gap between wheat and arabidopsis. Translational Seed Biology: From Model Systems to Crop Improvement, UC Davis, CA, Sept. 12-20. Invited Presentation.RGL2 PROTEIN DOES NOT DISAPPEAR DURING SLY1 MUTANT SEED GERMINATION-(Abstract Only) Ariizumi, T., Steber, C.M. 2007. Rgl2 protein does not disappear during sly1 mutant seed germination. International Conference on Plant Growth Substances Proceedings, July 21-25, Puerta Vallerta, Mexico, MS705.A COMPARATIVE STUDY OF TWO F-BOX PROTEINS, SLEEPY1 AND SNEEZY IN GA SIGNALING-(Abstract Only) Ariizumi, T., Steber, C.M. 2007. A comparative study of two f-box proteins, sleepy1 and sneezy in ga signaling. International Conference on Plant Growth Substances Proceedings, July 21-25, Puerta Vallerta, Mexico, PS1128.Seed germination of GA-insensitive sleepy1 mutants does not require RGL2 protein disappearance in Arabidopsis-(Peer Reviewed Journal) Ariizumi, T., Steber, C.M. 2007. Seed germination of GA-insensitive sleepy1 mutants does not require RGL2 protein disappearance in Arabidopsis. The Plant Cell 19, 791-804.The role of the GA signaling SLY1 in Arabidopsis seed germination-(Abstract Only) Steber, C.M. 2006. The role of the GA signaling SLY1 in Arabidopsis seed germination. Seed Biology: Advances and Applications. W1168 Seed Biology Group, San Antonio, TX, Dec 1-4, pg. 127.UBIQUITIN BECOMES UBIQUITOUS IN GA SIGNALING-(Book / Chapter) Ariizumi, T., Steber, C.M. 2006. Ubiquitin becomes ubiquitous in GA signaling, In: Taiz, L. and Zeiger, E., editors. Plant Physiology 4th Edition, Sunderland, MA: Sinauer Associates. 20:20.3.THE ROLE OF THE SLEEPY1 (SLY1) F-BOX GENE IN GA REGULATION OF SEED GERMINATION IN ARABIDOPSIS-(Abstract Only) Ariizumi, T., Schramm, E., Steber, C.M. 2006. The role of the sleepy1 (sly1) f-box gene in ga regulation of seed germination in arabidopsis. Arabidopsis Res Intern Conference Proceedings. June 28-July 2, Madison, WI. Abst #378.CHAPTER 11, DE-REPRESSION OF SEED GERMINATION BY GA SIGNALING-(Book / Chapter) Steber, C.M. 2006. Chapter 11: De-repression of seed germination by ga signaling. In: Seed Development, Dormancy and Germination. Eds. Kent Bradford and Hiroyuki Nonogaki. pgs 248-263. Blackwell Publishing, London, UK.GIBBERELLIN METABOLISM AND SIGNALING-(Book / Chapter) Thomas, S.G., Rieu, I., Steber, C.M. 2005. Gibberellin metabolism and signaling. Chapter 9 In: Plant Hormones; Vitamins and Hormones Advances in Research and Applications. Ed. Gerald Litwack. Elsevier Publishing, Boston, MA. 72:289-339.RECESSIVE-INTERFERING MUTATIONS IN THE GIBBERELLIN SIGNALING GENE SLEEPY1 ARE RESCUED BY OVEREXPRESSION OF ITS HOMOLOGUE SNEEZY-(Peer Reviewed Journal) Strader, L., Ritchie, S., Soule, J.D., Mcginnis, K.M., Steber, C.M. 2004. Recessive-interfering mutations in the ga-response gene sleepy1 are  rescued by overexpression of its homologue sneezy. Proceedings of the National Academy of Sciences. 101:12771-12776.THE ARABIDOPSIS F-BOX PROTEIN SLEEPY1 TARGETS GIBBERELLIN SIGNALING  REPRESSORS FOR GIBBERELLIN-INDUCED DEGRADATION-(Peer Reviewed Journal) Dill, A., Thomas, S.G., Hu, J., Steber, C.M., Sun, T.P. 2004. The arabidopsis f-box protein sleepy1 targets gibberellin signaling repressors for gibberellin-induced degradation. The Plant Cell. 16:1392-1405.THE ORGANIZATION AND RATE OF EVOLUTION OF THE WHEAT TRANSCRIPTOME ARE CORRELATED WITH RECOMBINATION RATES ALONG CHROMOSOME ARMS-(Peer Reviewed Journal) AKHUNOV, E.D., LAZO, G.R., CHAO, S., ANDERSON, O.D., GUSTAFSON, J.P., WALKER-SIMMONS, M.K., STEBER, C.M. THE ORGANIZATION AND RATE OF EVOLUTION OF THE WHEAT TRANSCRIPTOME ARE CORRELATED WITH RECOMBINATION RATES ALONG CHROMOSOME ARMS. GENOME RESEARCH. 2003.  V. 13(5). P. 753-763.  ProjectsWheat and Barley Adaptation to a Changing Climate - Discovery of Genetic and Physiological Processes for Improved Crop Productivity and QualityIn-House Appropriated (D)Accession Number:445231Development of an Immunoassay for Wheat Alpha-amylaseNon-Funded Cooperative Agreement (N)Accession Number:442083Preventing Low Falling Numbers in Washington Wheat through Preharvest Sprouting and LMA Tolerance.Non-Assistance Cooperative Agreement (S)Accession Number:442979Rapid Generation Advance through Doubled Haploids and Speed Breeding in WheatNon-Assistance Cooperative Agreement (S)Accession Number:436510


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