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Plant Physiology 92:538-542 (1990) © 1990 American Society of Plant Biologists Globulin Gene Expression in Embryos of Maize viviparous Mutants 1Evidence for Regulation of the Glb1 Gene by Abscissic AcidDepartment of Agronomy, University of Illinois, Urbana, Illinois 61801
Expression of genes encoding the major Zea mays embryo globulins was examined in the maize precocious germination viviparous (vp) mutants. Comparison of globulin protein profiles of precociously germinating mutant embryos with those of normally germinating mature embryos revealed substantial differences with respect to the proteins encoded by the Glb1 gene. Analysis of Glb1 transcript levels in vp/vp embryos suggests that these mutants do not fully switch from a program of embryo maturation to one of germination. These preliminary studies indicate that the vp mutants provide an excellent system for the study of embryo maturation in maize. We also provide evidence for the positive regulation of Glb1 expression by the plant growth regulator abscisic acid.
2 Supported by a fellowship from Conselho Nacional de Desenvolvimento Cientifico e TechnologicoBrazil. 1 This contribution from the University of Illinois Agricultural Experiment Station was supported in part by grants from The Standard Oil Corporation, a wholly owned subsidiary of BP America, Inc., and the U.S. Department of Agriculture Competitive Research Grants Office (No. 88-37262-3427) to A. L. K. This article has been cited by other articles:
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