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Embryogenesis and Seed Development

Embryogenesis and seed development are important stages in development that determine seed quality. Early embryogenesis has been difficult to study because the cells involved are small, few in number, and embedded in maternal tissues. Molecular approaches have led to the isolation of AGL 15, a member of the MADS-domain family of regulatory factors, that begins to accumulate in nuclei very early in embryo development. Work is ongoing to understand the role AGL 15 plays during this phase of the life cycle. The latter stages of seed development have also been the subject of field and laboratory studies. It has provided insight into the nutritional and hormonal requirements for seed development. These studies have shown the importance seed development has on subsequent germination performance.

Related Publications:

      Woltz, J.M., Egli, D.B., and TeKrony, D.M. 2006. Corn seed germination and vigor following freezing during seed development. Crop Science 46: 1526-1535.

      Baskin, C.C., and Baskin, J.M. 2005. Underdeveloped embryos in dwarf seeds and implications for assignment to dormancy class. Seed Science Research 15: 357-360.

      Egli, D.B., TeKrony, D.M., Heitholt, J.J., and Rupe, J. 2005. Relationship between air temperature during seed filling and seed germination and vigor in soybean. Crop Science 45: 1329-1335.

      Egli, D.B., TeKrony, D.M., and Spears, J.F. 2005. High temperature stress and soybean seed quality: Stage of seed development. Seed Technol. 27: 177-189.

      Woltz, J.M., Egli, D.B., and TeKrony, D.M. 2005. Freezing point temperatures of corn structures during seed development. Agronomy Journal 97: 1564-1569.

      Zhu, C., and Perry, S.E. 2005. Control of expression of AGL15, a member of the MADS-box family. The Plant Journal 41: 583-594.

      Wang, H., Caruso, L.V., Downie, A.B., and Perry, S.E. 2004. The embryo MADS-domain protein AGAMOUS-Like 15 directly regulates expression of a gene encoding an enzyme involved in gibberellin metabolism. The Plant Cell 16: 1206-1219.

      Wang, H., Hill, K., and Perry, S.E. 2004. An Arabidopsis RNA lariat debranching enzyme is essential for embryogenesis. The Journal of Biological Chemistry 279: 1468-1473.

      Zhao, T.-Y., Martin, D., Meeley, R.B., and Downie, B. 2004. Expression of the maize GALACTINOL SYNTHASE gene family: II) Kernel abscission, environmental stress and myo-inositol influences accumulation of transcript in developing seeds and callus cells. Physiologia Plantarum 121: 647-655.

      Zhao, T.-Y., Thacker, R.R., Corum III, J.W., Snyder, J.C., Meeley, R.B., Obendorf, R.L., and Downie, B. 2004. Expression of the maize GALACTINOL SYNTHASE gene family: I) Expression of two different genes during seed development and germination. Physiologia Plantarum 121: 634-646.

      Argyris, J., VanSanford, D., and TeKrony, D. 2003. Fusarium graminearum infection during wheat seed development and its effect on seed quality. Crop Science 43: 1-7.

      Harding, E.W., Tang, W., Nichols, K.W., Fernandez, D.E., and Perry, S.E. 2003. Expression and maintenance of embryogenic potential is enhanced through constitutive expression of AGAMOUS-Like 15. Plant Physiology 133: 653-663.

      Perry, S.E., and Wang, H. 2003. Rapid isolation of Arabidopsis thaliana developing embryos. BioTechniques 35: 278-282.

      Tang, W., and Perry, S.E. 2003. Binding site selection for the plant MADS domain protein AGL15: an in vitro and in vivo study. The Journal of Biological Chemistry 278: 28154-28159.

      Koning, G., TeKrony, D.M., Pfieffer, T., and Ghabrial, S.A. 2002. Influence of soybean mosaic virus (SMV) resistance gene (Rsv1) on Phomopsis spp. seed infection, in an aphid-free environment. Crop Science 42: 178-185.

      Wang, H., Tang, W., Zhu, C., and Perry, S.E. 2002. A chromatin immunoprecipitation (ChIP) approach to isolate genes regulated by AGL15, a MADS-domain protein that preferentially accumulates in embryos. The Plant Journal 32: 831-843.

      Egli, D.B., and Bruening, W.P. 2001. Source-sink relationships, seed sucrose levels and seed growth rates in soybean. Annals of Botany 88: 235-242.

      Koning, G,, TeKrony, D.M., Pfeiffer, T.W., and Ghabrial, S.A. 2001. Infection of soybean with soybean mosaic virus increases susceptibility to Phomopsis spp. seed infection. Crop Science 41: 1850-1856.

      Bruening, W.P., and Egli, D.B. 2000. Leaf starch accumulation and seed set at phloem-isolated nodes in soybean. Field Crops Research 68: 113-120.

      Fernandez, D.E., Heck, G.R., Perry, S.E., Patterson, S.E., Bleecker, A.B., and Fang, S.-C. 2000. The embryo MADS domain factor AGL15 acts post-embryonically: Inhibition of perianth senescence and abscission via constitutive expression. The Plant Cell 12: 183-197.

      Egli, D.B. 1998. Seed Biology and the Yield of Grain Crops. CAB International, Wallingford, UK

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