DNA Methylation Shapes Seed-Borne Microbiome and Proteome Responses During Early Maize-Beneficial Bacteria Interactions.
Zocateli PI, de Olímpio GV, de Almeida FA, da Rocha LO, de Sena Martins DV
Soil Health
The corn in your grocery store could one day be grown with far less synthetic fertilizer because specific soil bacteria can reprogram the plant's own DNA to welcome more beneficial microbes and absorb nutrients more efficiently.
Plants have chemical switches on their DNA that turn genes on or off, and scientists found that a friendly soil bacterium naturally flips those switches in corn roots in a way that helps the plant grow better. This also changes which other microbes live around the roots, creating a more complex underground community. Understanding this opens a door to farming practices that rely on beneficial bacteria instead of chemical fertilizers.
Key Findings
Inoculation with Herbaspirillum seropedicae (a nitrogen-fixing bacterium) promoted maize plant growth and colonized root mucilage more heavily in chemically hypomethylated roots
Bacterial inoculation altered cytosine DNA methylation patterns in maize roots in a way that mimicked the effect of the hypomethylating drug 5-azacytidine, suggesting bacteria actively reshape the plant epigenome
Proteomic analysis identified 1,818 proteins with significant pathway shifts, particularly in carbon metabolism and the citric acid cycle, indicating broad metabolic reprogramming
chevron_right Technical Summary
Scientists discovered that a soil bacterium naturally changes the chemical tags on maize DNA — the same changes triggered by a drug that loosens gene regulation — and this interaction reshapes the plant's root microbiome and boosts growth.
Abstract Preview
Microorganism and plant interactions are crucial for development and environmental adaptation. Plant growth promoting bacteria enhance agricultural productivity in a sustainable manner, while epige...
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Maize, also known as corn in North American English, is a tall stout grass that produces cereal grain. The leafy stalk of the plant gives rise to male inflorescences or tassels which produce pollen, and female inflorescences called ears. The ears yield grain, known as kernels or seeds. In modern ...