We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Effects of Priestia aryabhattai on Phosphorus Fraction and Implications for Ecoremediating Cd-Contaminated Farmland with Plant–Microbe Technology
Summary
Researchers found that a soil bacterium called Priestia aryabhattai, trained to tolerate cadmium contamination, can help convert unavailable phosphorus in soil into forms that plants can use. The study suggests this microbe could be a useful tool for restoring farmland contaminated with heavy metals while simultaneously improving soil fertility.
The application of phosphate-solubilizing bacteria has been widely studied in remediating Cd-contaminated soil, but only a few studies have reported on the interaction of P and Cd as well as the microbiological mechanisms with phosphate-solubilizing bacteria in the soil because the activity of phosphate-solubilizing bacteria is easily inhibited by the toxicity of Cd. This paper investigates the phosphorus solubilization ability of Priestia aryabhattai domesticated under the stress of Cd, which was conducted in a soil experiment with the addition of Cd at different concentrations. The results show that the content of Ca2-P increased by 5.12-19.84%, and the content of labile organic phosphorus (LOP) increased by 3.03-8.42% after the addition of Priestia aryabhattai to the unsterilized soil. The content of available Cd decreased by 3.82% in the soil with heavy Cd contamination. Priestia aryabhattai has a certain resistance to Cd, and its relative abundance increased with the increased Cd concentration. The contents of Ca2-P and LOP in the soil had a strong positive correlation with the content of Olsen-P (p < 0.01), while the content of available Cd was negatively correlated with the contents of Olsen-P, Ca2-P, and LOP (p < 0.05). Priestia aryabhattai inhibits the transport of Cd, facilitates the conversion of low-activity P and insoluble P to Ca2-P and LOP in the soil, and increases the bioavailability and seasonal utilization of P in the soil, showing great potential in ecoremediating Cd-contaminated farmland soil with plant-microbe-combined technology.
Sign in to start a discussion.
More Papers Like This
Screening of plant growth-promoting rhizobacteria helps alleviate the joint toxicity of PVC+Cd pollution in sorghum plants
Researchers isolated soil bacteria that promote plant growth and showed they can partially offset the combined toxicity of PVC microplastics and cadmium in sorghum, restoring soil nutrient availability and shifting rhizosphere bacterial communities in ways that support nitrogen and phosphorus cycling.
Rhizosphere microbiome metagenomics in PGPR-mediated alleviation of combined stress from polypropylene microplastics and Cd in hybrid Pennisetum
Researchers found that beneficial soil bacteria (PGPR) can help plants cope with the combined stress of polypropylene microplastics and the toxic heavy metal cadmium. The bacteria improved plant growth by 8-42% under contaminated conditions by reshaping the microbial community around plant roots. This study offers a potential strategy for maintaining crop productivity in farmland contaminated with both microplastics and heavy metals.
Plant growth-promoting bacteria improve the Cd phytoremediation efficiency of soils contaminated with PE–Cd complex pollution by influencing the rhizosphere microbiome of sorghum
Researchers found that adding beneficial bacteria to soil contaminated with both polyethylene microplastics and the toxic metal cadmium helped sorghum plants grow larger and absorb more cadmium from the soil, improving cleanup potential. This approach matters for food safety because using plants and bacteria to remove combined microplastic-heavy metal pollution from farmland could reduce the amount of these contaminants that enter the food supply.
The impact of arbuscular mycorrhizal fungi and endophytic bacteria on peanuts under the combined pollution of cadmium and microplastics
Researchers tested whether beneficial soil fungi and bacteria could help peanut plants cope with combined contamination from cadmium and microplastics. They found that the microbial treatment effectively trapped cadmium in the plant roots, preventing it from moving into the shoots and edible parts. The study suggests that harnessing natural soil microbes could be a practical strategy for growing safer food in polluted farmland.
Principles and Applicability of Integrated Remediation Strategies for Heavy Metal Removal/Recovery from Contaminated Environments
Researchers reviewed strategies for removing heavy metals from contaminated agricultural soils, focusing on how chelating agents — chemicals that bind to metals — combined with beneficial bacteria can help plants absorb and neutralize metals without harming plant growth, offering cleaner soils for safer food production.