Remedial Potential of Plant Growth Promoting Rhizobacteria (PGPR) for Pesticide Residues: Recent Trends and Future Challenges

Romeh, Ahmed Ali

doi:10.1007/978-3-030-97000-0_14

Pesticides Bioremediation 2022

DOI: 10.1007/978-3-030-97000-0_14

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Remedial Potential of Plant Growth Promoting Rhizobacteria (PGPR) for Pesticide Residues: Recent Trends and Future Challenges

Ahmed Ali Romeh

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Cited by 3 publications

References 102 publications

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Unboxing PGPR-mediated management of abiotic stress and environmental cleanup: what lies inside?

Kumar,

Ali,

Sharma

et al. 2024

Environ Sci Pollut Res

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Unboxing PGPR-mediated management of abiotic stress and environmental cleanup: what lies inside?

Kumar,

Ali,

Sharma

et al. 2024

Environ Sci Pollut Res

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Chlorpyrifos Degradation by Bacillus tropicus a Plant Growth Promoting Rhizobacteria

Malik,

Singhmar,

Singh

et al. 2024

Biosci., Biotech. Res. Asia

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Excessive use of organophosphate in modern farming to improve the crop productivity has cause pollution in soil, water and air which lead environmental as well as human hazards. Microbial fertility is adversely affected by the use of pesticides. Thus, the present study focused on the isolation and screening of effective isolates with multi-traits PGPR activities and further studied for chlorpyrifos pesticide degradation. The bacterial isolate DK5 was showing multiple PGPR activity, identified as Bacillus tropicus by 16S rRNA sequencing. The chlorpyrifos degradation by isolated Bacillus tropicuswas studied by using resting cell study. In HPLC analysis revealed that Bacillus tropicus degrade 60% chlorpyrifos after 48 hrs. of incubation followed by 99% after 72 hrs. of incubation. Generally, results of this study revealed that isolate DK5 identified as Bacillus tropicus can be used for the successfully removal of chlorpyrifos from contaminated soil and plant growth promotion.

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Isolation of Glyphosate-Resistant Bacterial Strains to Improve the Growth of Maize and Degrade Glyphosate under Axenic Condition

et al. 2023

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Glyphosate is a non-selective herbicide that is used to control perennial weeds in agriculture. However, its vast application may result in glyphosate residues in the food chain. Due to its toxicity to non-target organisms, glyphosate-contaminated soils needed to be remediated, and bioremediation is a conventional remedial method. The success of this depends on the isolation of bacteria with the ability to degrade glyphosate. The goal of this study was to isolate glyphosate-degrading bacteria from the rhizosphere of maize and wheat with a repeated application history of glyphosate for 5–10 years and test their roles in promoting the growth of maize (Zea mays) and glyphosate degradation in vitro. Eleven isolated bacteria were inoculated, and their role in plant growth was compared at different levels (100 and 200 mg/kg) of glyphosate. The results revealed that E. ludwigii improved the highest shoot length by 26% and the root length by 34% compared to the control at 100 mg/kg. The relative water contents in leaves significantly improved by 58% using P. aeruginosa at 100 mg/kg. The maximum electrolyte leakage from leaves significantly reduced by 73% using E. ludwigii at 100 mg/kg compared to the control (uninoculated). A high-pressure liquid chromatography instrument was used to assess the glyphosate concentrations. The highest degradation of glyphosate was observed in treatments inoculated with E. ludwigii (99 and 40%), P. aeruginosa (95 and 39%), K. variicola, (91 and 38%) E. cloacae (92 and 38%), and S. liquefaciens (87 and 36%), respectively, at 100 and 200 mg/kg within 28 days. These five strains demonstrated a great potential for degrading glyphosate and promoting the growth of maize in vitro, and they will be further exploited for the biodegradation of glyphosate and the growth promotion of broader crop species in situ in the near future.

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Remedial Potential of Plant Growth Promoting Rhizobacteria (PGPR) for Pesticide Residues: Recent Trends and Future Challenges

Cited by 3 publications

References 102 publications

Unboxing PGPR-mediated management of abiotic stress and environmental cleanup: what lies inside?

Unboxing PGPR-mediated management of abiotic stress and environmental cleanup: what lies inside?

Chlorpyrifos Degradation by Bacillus tropicus a Plant Growth Promoting Rhizobacteria

Isolation of Glyphosate-Resistant Bacterial Strains to Improve the Growth of Maize and Degrade Glyphosate under Axenic Condition

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