MdUGT88F1 enhances plant resistance to Fusarium proliferatum f.sp. malus domestica MR5 via root exudate-mediated assembly of disease-suppressive rhizosphere microbiota.
Duan Y, Ma Z, Liu Y, Jia Y, Zhang Z
Soil Health
Apple orchards worldwide are quietly being poisoned by their own soil after replanting, and this research points toward a probiotic-style soil treatment that could keep your grocery store apples affordable and plentiful.
When apple trees are replanted in the same ground, they often get sick and die — a mysterious problem that's been devastating orchards for decades. Scientists found that apples with a certain gene turned down produce less of a natural chemical in their roots, and that change attracts helpful soil bacteria (Bacillus) that actively fight the fungus making trees sick. By feeding the soil a mix of five specific beneficial bacteria, they could protect new apple trees from this disease without chemicals.
Key Findings
Silencing MdUGT88F1 in apple plants reduced disease severity and decreased Fusarium pathogen abundance in rhizosphere soil compared to wild-type plants
MdUGT88F1-silenced plants released significantly higher levels of five sugars (D-tagatose, D-galactose, sucrose, 3-O-methyl-D-glucose, and maltitol) that selectively recruited beneficial Bacillus bacteria
A synthetic community of five Bacillus species (B. velezensis, B. mojavensis, B. subtilis, B. amyloliquefaciens, B. licheniformis) inoculated into replanted soil significantly reduced Fusarium abundance and promoted plant growth
chevron_right Technical Summary
Researchers discovered that silencing a specific apple gene (MdUGT88F1) reduces a toxic compound in apple roots, which in turn attracts beneficial Bacillus bacteria that fight off a major fungal pathogen causing Apple Replant Disease — a condition that devastates apple orchards when trees are replanted in the same soil.
Abstract Preview
Apple replant disease (ARD) is a major threat to the sustainable development of China's apple industry. It is primarily caused by the accumulation of phloridzin and the pathogen Fusarium proliferat...
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An apple is the round, edible fruit of an apple tree. Fruit trees of the orchard or domestic apple, the most widely grown in the genus, are cultivated worldwide. The tree originated in Central Asia, where its wild ancestor, Malus sieversii, is still found. Apples have been grown for thousands of ...