Globulin Gene Expression in Embryos of Maize viviparous Mutants | Zendy

Alan R. Kriz | Zendy; Mark S. Wallace | Zendy; Renato Paiva | Zendy

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Globulin Gene Expression in Embryos of Maize viviparous Mutants

Author(s) -

Alan R. Kriz,

Mark S. Wallace,

Renato Paiva

Publication year - 1990

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.92.2.538

Subject(s) - embryo , biology , mutant , abscisic acid , germination , gene , globulin , gene expression , microbiology and biotechnology , embryogenesis , genetics , botany , immunology

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.

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