ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2011
Characterization of opaque2 modifier QTLs and candidate genes in recombinant inbred lines derived from the K0326Y quality protein maize inbred.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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26 citing papers in PubMed, 53 citations in OpenAlex.
- Breeding for colored quality protein popcorn with improved amino acid composition.Frontiers in plant science · 2026Article
- Dissecting the genetic architecture of polygenic nutritional traits in maize through meta-QTL analysis.Food chemistry. Molecular sciences · 2025Article
- Identification of QTLs associated withFrontiers in plant science · 2025Article
- QTL-based dissection of three key quality attributes in maize using double haploid populations.Frontiers in plant science · 2025Article
- Genetic analysis of QTLs for lysine content in four maize DH populations.BMC genomics · 2024Article
- Editing the 19 kDa alpha-zein gene family generates non-opaque2-based quality protein maize.Plant biotechnology journal · 2024Article
- Tandem duplicate expression patterns are conserved between maize haplotypes of thePlant direct · 2021Article
- Expression profile of protein fractions in the developing kernel of normal, Opaque-2 and quality protein maize.Scientific reports · 2021Article
- Final Selection of Quality Protein Popcorn Hybrids.Frontiers in plant science · 2021Article
- Genetic enhancement of essential amino acids for nutritional enrichment of maize protein quality through marker assisted selection.Physiology and molecular biology of plants : an international journal of functional plant biology · 2020Article
- Transactivation of Sus1 and Sus2 by Opaque2 is an essential supplement to sucrose synthase-mediated endosperm filling in maize.Plant biotechnology journal · 2020Article
- Article
- Long-read sequencing reveals genomic structural variations that underlie creation of quality protein maize.Nature communications · 2020Article
- Production and Selection of Quality Protein Popcorn Hybrids Using a Novel Ranking System and Combining Ability Estimates.Frontiers in plant science · 2020Article
- High frequency DNA rearrangement atCommunications biology · 2019Article
- Maize opaque mutants are no longer so opaque.Plant reproduction · 2018Review
- Generation and Evaluation of ModifiedFrontiers in plant science · 2018Article
- Development and validation of functional CAPS markers for the FAE genes inBreeding science · 2016Article
- A Population of Deletion Mutants and an Integrated Mapping and Exome-seq Pipeline for Gene Discovery in Maize.G3 (Bethesda, Md.) · 2016Article
- Gene duplication confers enhanced expression of 27-kDa γ-zein for endosperm modification in quality protein maize.Proceedings of the National Academy of Sciences of the United States of America · 2016Article
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Authors and funding
10 authors at 7 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Quality protein maize (QPM) is a high lysine-containing corn that is based on genetic modification of the opaque2 (o2) mutant. In QPM, modifier genes convert the starchy endosperm of o2 to the vitreous phenotype of wild type maize. There are multiple, unlinked o2 modifier loci (Opm) in QPM and their nature and mode of action are unknown. We previously identified seven Opm QTLs and characterized 16 genes that are differentially up-regulated at a significant level in K0326Y QPM, compared to the starchy endosperm mutant W64Ao2. In order to further characterize these Opm QTLs and the genes up-regulated in K0326Y QPM, we created a population of 314 recombinant inbred lines (RILs) from a cross between K0326Y QPM and W64Ao2. The RILs were characterized for three traits associated with endosperm texture: vitreousness, density and hardness. Genetic linkage analysis of the RIL population confirmed three of the previously identified QTLs associated with o2 endosperm modification in K0326Y QPM. Many of the genes up-regulated in K0326Y QPM showed substantially higher levels of expression in vitreous compared with opaque RILs. These included genes associated with the upstream regulation of the ethylene response pathway, and a gene encoding a regulatory subunit of pyrophosphate-dependent fructose-6-phosphate 1-phosphotransferase, an adaptive enzyme of the glycolytic pathway.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.