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Genes from corn's wild ancestor change soil microbial community, improve sustainability

New research from the University of Illinois has found that corn's wild ancestor genes can inhibit nitrifying and denitrifying bacteria, reducing nitrogen loss and greenhouse gas emissions. The study shows reductions in nitrification of up to 50% in field and greenhouse trials, with potential huge impacts on sustainable agriculture.

How a fungus leads to tissue growths in maize

A University of Bonn study has shown how the fungus Ustilago maydis takes over the plant's lateral root formation function, leading to massive tissue growths that divert energy and resources from defense. The findings provide valuable insights for breeding more resistant varieties of maize.

SourceUniversity of Bonn·JournalNew Phytologist·DateJan 5, 2026

Illinois study shows public seed banks can fast-track corn quality research

Researchers in Illinois used public genebanks and shared data to accelerate corn quality research, identifying genetic regions influencing kernel composition traits. By combining near-infrared spectroscopy and genomic data, the team found well-known and previously unreported genomic regions associated with key kernel composition traits.

New study finds corn genome can gang up on multiple pathogens at once

Researchers at the University of Illinois have identified genomic regions associated with resistance to four diseases in corn: Goss's wilt, gray leaf spot, northern corn leaf blight, and southern corn leaf blight. The study found that multiple genes working together can provide durable resistance against different pathogens.

New genetic vulnerability to herbicide found in nearly 50 sweet and field corn lines

A new study reveals a genetic vulnerability to the herbicide tolpyralate in nearly 50 sweet and field corn lines, with sensitivity increased by adjuvants commonly co-applied with HPPD-inhibitors. The source of the sugary enhancer gene is among the most sensitive genotypes, suggesting widespread potential.

A mixed origin made maize successful

A new study published in Science reveals that modern maize originated from a hybrid of two teosintes created around 5000 years ago in central Mexico. The hybridization event led to the spread of maize across the Americas and later worldwide, becoming one of the world's most important crops.

SourceUniversity of California - Davis·JournalScience·TypeExperimental study·DateNov 30, 2023

Exploring the genetic ma(i)ze: Functional genomics can help molecular breeding of maize

Researchers used functional genomics to identify key genes involved in inducing callus from immature maize embryos, overcoming a major roadblock in plant breeding. The study found that nearly 30% of predicted A188 genes were structurally different from other maize lines, accounting for high protein divergence and phenotypic variations.

SourceCactus Communications·JournalThe Crop Journal·TypeObservational study·DateSep 8, 2021

European and American maize: Same same, but different

Researchers have decoded the European maize genome, revealing significant differences in genetic content and genome structure compared to North American lines. These findings suggest that heterosis, a phenomenon increasing crop yields, may be influenced by variations in knob regions and gene regulation.

Tracking down the jumping genes of maize

Researchers at UC Davis and Cold Spring Harbor Laboratory have mapped the 'jumping genes' of maize, identifying transposable elements that regulate gene expression and impact plant traits. The new genome sequence enables a deeper understanding of the complex relationships between these elements and the diversity of the genome.

Maize genome 'dark matter' discovery a boon for breeders

Researchers at Cornell University and Florida State University identified a tiny percentage of regulatory DNA in the maize genome that accounts for roughly half of the variation in observable traits found in corn. This discovery enables breeders to focus on these areas for more efficient plant breeding.

SourceCornell University·JournalProceedings of the National Academy of Sciences·DateMay 16, 2016

Mapping the maize genome

Researchers have developed a detailed positional cloning protocol to locate genes within the large and complex maize genome. This technique allows for the identification of genetic markers linked to specific traits, enabling precise localization of candidate regions until the gene is identified.

SourceBotanical Society of America·JournalApplications in Plant Sciences·DateJan 20, 2015

Amaizing: Corn genome decoded

The completed corn genome, published in Science, contains 32,000 genes and will aid in breeding high-yield crops. The sequence, a significant achievement after years of research, offers insights into plant genetics and opens new avenues for crop improvement.

SourceWashU Medicine·JournalScience·DateNov 19, 2009

PLoS Genetics 2009 maize genome collection

The PLoS Genetics special collection presents groundbreaking research on maize genome architecture, revealing new insights into centromeres, transposons, microRNAs, and more. The studies also explore the role of copy number variation and presence/absence variation in shaping maize phenotypes.

SourcePLOS·JournalPLOS Genetics·DateNov 19, 2009