Herbicide-eating bacteria can also make silver particles that fight plant fungi
Nazarovna JR, Baxtiyor Ugli ER, Nukusbay Uli BE, Zafar Ugli JJ, Mamarayim Ugli TF
Soil Health
Pendimethalin is a weed-preventer sold for lawns and vegetable beds that lingers in soil, and microbes that clear it while producing a fungus-fighting material point toward cleaner soil and fewer crop diseases like Fusarium wilt.
Researchers found soil microbes that eat a widely used weed-preventing herbicide, with the best one clearing over 90% of it in a week. The same microbes can be put to work making microscopic silver particles, which stopped the growth of three fungi that attack plants. It's an early lab result, but it links cleaning up herbicide residue with a new way to fight plant disease.
Key Findings
At 125 mg/L pendimethalin, A. radioresistens R27, B. pumilus R25 and S. variabilis R35 degraded 92.5%, 86.0% and 62.0% of the herbicide in 7 days.
Silver nanoparticles made by the microbes were mostly spherical with a face-centred cubic crystal structure; those from R27 at 75 mg/L had a zeta potential of -20.5 mV.
The nanoparticles showed concentration-dependent antifungal activity against Aspergillus flavus, Alternaria alternata and Fusarium oxysporum.
chevron_right Technical Summary
Three soil microbes can break down the common garden and farm herbicide pendimethalin, and they can also be used to make tiny silver particles that stop several crop-damaging fungi. One strain, Acinetobacter radioresistens R27, cleared 92.5% of the herbicide in a week.
Abstract Preview
Original paper
New herbicide-degrading microorganisms for the biogenic synthesis of silver nanoparticles.
Herbicide-resistant microorganisms were investigated for their potential in pendimethalin biodegradation and the biogenic synthesis of silver nanoparticles (AgNPs). Among the selected strains, Acin...
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