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Molecular analysis of wild-type and mutant alleles at the Opaque-2 regulatory locus of maize reveals different mutations and types of O2 products.

Plant molecular biology - 1 Mar 1994

Bernard L, Ciceri P, Viotti A

Abstract excerpt

The expression of the various members of the zein multigene family in maize endosperm is controlled by different regulatory loci. One of these loci, Opaque-2, coding for a bZIP transcriptional factor, controls the expression of a subset of zein genes. Analysis of genomic DNA from plants carrying wild-type (O2) or mutant o2 alleles shows specific DNA restriction patterns that correlate with transcript types and...

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PMID: 8204831
DOI: 10.1007/BF00014448

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 7 Sept 2026. Manifest publication-graph-cohort-2026-09-08.1.

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Molecular analysis of wild-type and mutant alleles at the Opaque-2 regulatory locus of maize reveals different mutations and types of O2 products.PMID 8204831Read ↗

Specific combinations of zein genes and genetic backgrounds influence the transcription of the heavy-chain zein genes in maize opaque-2 endosperms.Semantic proximity Read ↗

OHP1: a maize basic domain/leucine zipper protein that interacts with opaque2.Semantic proximity Read ↗

An arginine to lysine substitution in the bZIP domain of an opaque-2 mutant in maize abolishes specific DNA binding.Semantic proximity Read ↗

opaque2 modifiers act post-transcriptionally and in a polar manner on gamma-zein gene expression in maize endosperm.Semantic proximity Read ↗

Opaque-2 is a transcriptional activator that recognizes a specific target site in 22-kD zein genes.Semantic proximity Read ↗

Characterization of novel proteins affected by the o2 mutation and expressed during maize endosperm development.Semantic proximity Read ↗

Molecular analysis of opaque-2 alleles from Zea mays L. reveals the nature of mutational events and the presence of a hypervariable region in the 5' part of the gene.Semantic proximity Read ↗

Phosphorylation of Opaque2 changes diurnally and impacts its DNA binding activity.Semantic proximity Read ↗

Wild-type opaque2 and defective opaque2 polypeptides form complexes in maize endosperm cells and bind the opaque2-zein target site.Semantic proximity Read ↗

Transposable element rbg induces the differential expression of opaque-2 mutant gene in two maize o2 NILs derived from the same inbred line.Semantic proximity Read ↗

A 168 bp derivative of Suppressor-mutator/Enhancer is responsible for the maize o2-23 mutation.Semantic proximity Read ↗

Maize opaque endosperm mutations create extensive changes in patterns of gene expression.Semantic proximity Read ↗

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