Journal
MSYSTEMS
Volume 7, Issue 4, Pages -Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/msystems.00169-22
Keywords
herbicides; biostimulation; metabolic modeling; microbial degradation
Categories
Funding
- Israeli Innovation Authority via the Kamin Initiative
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This study utilized metabolic-based community modeling approaches to simulate and prioritize potential biostimulants for removing pollutants from agricultural soils. The results showed that computational algorithms can guide the manipulation of soil microbiome and contribute to the design of biostimulation strategies.
Extensive use of agrochemicals is emerging as a serious environmental issue coming at the cost of the pollution of soil and water resources. Bioremediation techniques such as biostimulation are promising strategies used to remove pollutants from agricultural soils by supporting the indigenous microbial degraders. Though considered cost-effective and eco-friendly, the success rate of these strategies typically varies, and consequently, they are rarely integrated into commercial agricultural practices. In the current study, we applied metabolic-based community-modeling approaches for promoting realistic in terra solutions by simulation-based prioritization of alternative supplements as potential biostimulants, considering a collection of indigenous bacteria. Efficacy of biostimulants as enhancers of the indigenous degrader Paenarthrobacter was ranked through simulation and validated in pot experiments. A two-dimensional simulation matrix predicting the effect of different biostimulants on additional potential indigenous degraders (Pseudomonas, Clostridium, and Geobacter) was crossed with experimental observations. The overall ability of the models to predict the compounds that act as taxa-selective stimulants indicates that computational algorithms can guide the manipulation of the soil microbiome in situ and provides an additional step toward the educated design of biostimulation strategies.
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