Genomic Imprinting in Arabidopsis thaliana and Zea mays
Genomic imprinting is the differential expression of paternal and maternal alleles. In plants, gene imprinting occurs in the endosperm and has not been found in the embryo or adult plants. Imprinting can affect every allele of a locus (locus-dependent imprinting) or be specific to a particular allele (allele-dependent imprinting). Allele-dependent imprinting was the first type of gene imprinting discovered and has only been documented in maize. Locus-specific imprinting is found in both maize and Arabidopsis. Recent studies have revealed the integral role of female and male gametophytes in gene imprinting and mechanisms by which the parental alleles are distinguished from one another. Herein we will focus on the mechanisms of locus-specific gene imprinting in Arabidopsis and maize.
KeywordsImprint Gene Female Gametophyte Male Gametophyte Endosperm Development Paternal Allele
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- Gutierrez-Marcos JF, Costa LM, Biderre-Petit C, Khbaya B, O'Sullivan DM, Wormald M, Perez P, Dickinson HG (2004) maternally expressed gene1 Is a novel maize endosperm transfer cell-specific gene with a maternal parent-of-origin pattern of expression. Plant Cell 16:1288–1301 PubMedCrossRefGoogle Scholar
- Shimkets RA, Lowe DG, Tai JT, Sehl P, Jin H, Yang R, Predki PF, Rothberg BE, Murtha MT, Roth ME, Shenoy SG, Windemuth A, Simpson JW, Simons JF, Daley MP, Gold SA, McKenna MP, Hillan K, Went GT, Rothberg JM (1999) Gene expression analysis by transcript profiling coupled to a gene database query. Nat Biotechnol 17:798–803 PubMedCrossRefGoogle Scholar