Biocontrol of Fusarium culmorum and enhanced wheat seedling growth by Streptomyces sp. D15 from Algerian steppe soil: performance and genome analysis.
Toumatia O, Dif G, Belaouni HA, Mokhnache S, Saadi SA
Soil Health
Soil microbes like this one are why organic farmers who build diverse, healthy soil often see crops bounce back from disease without spraying — the right bacteria were already there doing the work.
Scientists found a helpful bacterium living in dry Algerian soil that can fight off a fungus that rots wheat seedlings. When added to infected wheat, it cut disease by over 90% and made the plants grow much more vigorously — longer shoots, more roots, faster sprouting. The bacterium works by producing natural antifungal compounds and also releases growth hormones that plants use to thrive.
Key Findings
Streptomyces D15 reduced Fusarium fungal disease incidence by 91% and disease severity by 87% in wheat seedlings
Treated seedlings showed 67% longer shoots versus untreated controls and 391% more lateral root branching compared to fungus-infected plants
Genome analysis revealed genes for multiple biocontrol and growth-promotion mechanisms, including antifungal enzymes, siderophores, and plant hormones IAA and gibberellic acid
chevron_right Technical Summary
A soil bacterium called Streptomyces D15, found in Algeria's steppe, can protect wheat from a damaging fungal disease while dramatically boosting seedling growth — offering a natural alternative to chemical fungicides.
Abstract Preview
Wheat (Triticum aestivum L.), a staple crop in Algeria and other semi-arid regions, faces significant challenges from fungal pathogens like Fusarium culmorum, which cause substantial yield losses a...
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