Arabidopsis GLAUCEpromotes fertilization-independent endosperm development and expression of paternally inherited alleles

• DOI: 10.1242/dev.007310
• Publication Date: 2007-10-26T06:44:11Z
• Authors: Quy A. Ngo; James M. Moore; Ramamurthy Baskar; Ueli Grossniklaus; Venkatesan Sundar...
• Keywords: 0303 health sciences; Arabidopsis Proteins; Arabidopsis; Inheritance Patterns; Gene Expression Regulation, Developmental; Genes, Plant; Plants, Genetically Modified; Models, Biological; Chromosomes, Plant; Gametogenesis; 03 medical and health sciences; Phenotype; Gene Expression Regulation, Plant; Fertilization; Seeds; Trans-Activators; Alleles; Gene Deletion

Early seed development of sexually reproducing plants requires both maternal and paternal genomes but is prominently maternally influenced. A novel gametophytic maternal-effect mutant defective in early embryo endosperm development, glauce (glc), has been isolated from a population Arabidopsis Ds transposon insertion lines. The glc mutation results deletion at the site, molecular identity GLC not known. glcembryos can develop up to globular stage absence central cells appear be unfertilized. suppresses autonomous observed fertilization-independent (fis) class mutants. also epistatic mea, one fis mutants, fertilized seeds, essential for biparental embryonic expression PHE1, repressed downstream target MEA. In addition, function required ribosome protein gene RPS5a AMP deaminase FAC1,both which are development. These indicate that factors derived female gametophyte activate subset genome seeds.