New bacterial strain of the genus<i>Ochrobactrum</i>with glyphosate-degrading activity

Hadi, Faranak; Mousavi, Amir; Noghabi, Kambiz Akbari; Tabar, Hadi Ghaderi; Salmanian, Ali Hatef

doi:10.1080/03601234.2013.730319

Cited by 60 publications

(17 citation statements)

References 24 publications

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“…Inhibition of EPSPS by glyphosate retards the synthesis of essential secondary metabolites and proteins; additionally, it curbs the vital energy pathways in soil microbes and plants [ 8 ]. A study reveals that glyphosate alters the soil texture and microbial diversity by reducing the microbial richness and increasing the population of phytopathogenic fungi [ 9 ]. This herbicide is considered safer than others, but its overuse imposes chronic effects on the environment and humans [ 10 ].…”

Section: Introductionmentioning

confidence: 99%

“…A study reveals that this herbicide alters the soil texture and microbial diversity by reducing the microbial richness and increasing the population of phytopathogenic fungi [ 17 ]. Literature has proved that glyphosate is among the carcinogenic compounds and can cause organ failure by inhibiting acetylcholinesterase and inducing oxidative stress in non-mammalian species [ 9 ]. Aminomethylphosphonic acid (AMPA) is the keystone metabolite of glyphosate often found in the sediment, surface, and groundwater [ 4 ].…”

Section: Introductionmentioning

confidence: 99%

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Herbicide Glyphosate: Toxicity and Microbial Degradation

Singh

Kumar

Gill³

et al. 2020

IJERPH

106

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Glyphosate is a non-specific organophosphate pesticide, which finds widespread application in shielding crops against the weeds. Its high solubility in hydrophilic solvents, especially water and high mobility allows the rapid leaching of the glyphosate into the soil leading to contamination of groundwater and accumulation into the plant tissues, therefore intricating the elimination of the herbicides. Despite the widespread application, only a few percentages of the total applied glyphosate serve the actual purpose, dispensing the rest in the environment, thus resulting in reduced crop yields, low quality agricultural products, deteriorating soil fertility, contributing to water pollution, and consequently threatening human and animal life. This review gives an insight into the toxicological effects of the herbicide glyphosate and current approaches to track and identify trace amounts of this agrochemical along with its biodegradability and possible remediating strategies. Efforts have also been made to summarize the biodegradation mechanisms and catabolic enzymes involved in glyphosate metabolism.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Herbicide Glyphosate: Toxicity and Microbial Degradation

Singh

Kumar

Gill³

et al. 2020

IJERPH

106

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“…Numerous glyphosatedegrading bacteria has been isolated and include Enterobacter cloacae (Kryuchkova et al, 2014), Ochrobactrum spp. (Hadi et al, 2013), Pseudomonas fluorescens (Zboinska et al, 1992), Agrobacterium radiobacter (McAuliffe et al, 1990), Pseudomonas sp. (Bazot and Lebeau, 2008), P. fluorescens, Acetobacter sp.…”

Section: Pesticides As Electron Donors For Molybdenum Reduction and Imentioning

confidence: 99%

“…Examples of glyphosate-degrading bacterium reported include Enterobacter cloacae (Kryuchkova et al, 2014), Ochrobactrum spp. (Hadi et al, 2013), Pseudomonas fluorescens (Zboinska et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND GLYPHOSATE-DEGRADING Klebsiella oxytoca STRAIN SAW-5 IN SOILS FROM SARAWAK

et al. 2016

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Bioremediation of pollutants including heavy metals and xenobiotics is an economic and environmentally friendly process. A novel molybdenum-reducing bacterium with the ability to utilize the pesticide glyphosate as a carbon source is reported. The characterization works were carried out utilizing bacterial resting cells in a microplate format. The bacterium reduces molybdate to Mo-blue optimally between pH 6.3 and 6.8 and at 34 o C. Glucose was the best electron donor for supporting molybdate reduction followed by lactose, maltose, melibiose, raffinose, d-mannitol, d-xylose, l-rhamnose, l-arabinose, dulcitol, myo-inositol and glycerol in descending order. Other requirements include a phosphate concentration at 5.0 mM and a molybdate concentration between 20 and 30 mM. The molybdenum blue exhibited an absorption spectrum resembling a reduced phosphomolybdate. Molybdenum reduction was inhibited by mercury, silver, cadmium and copper at 2 ppm by 45.5, 26.0, 18.5 and 16.3%, respectively. Biochemical analysis identified the bacterium as Klebsiella oxytoca strain Saw-5. To conclude, the capacity of this bacterium to reduce molybdenum into a less toxic form and to grow on glyphosate is novel and makes the bacterium an important instrument for bioremediation of these pollutants.

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“…However, there were not many studies about the influence of pH, salt content and temperature on Klebsiella aerogenes and Ochrobactrum ciceri. Moreover, in a study of Hadi et al (2013) showed that Ochrobactrum ciceri grew better under the temperature of 30 o C.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of some biophysical characteristics of five silicate solubilizing bacteria isolated from different ecosystems

Đường¹,

Nghĩa

2020

Vietnam J. Biotechnol.

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Silicate solubilizing bacteria (SSB) are key microorganisms to solubilize silicate minerals in the soil. Silicon helps to increase the growth and yield of plants and to enhance the environmental stress tolerance capability of plants. The aim of this study was to evaluate the effect of several factors like pH, salinity, and temperature on silicate solubilizing capacity of five selected SSB. Moreover, phosphorus solubilizing, nitrogen-fixing and indole-3-acetic acid (IAA) synthesizing capacity of these five bacteria were also tested. Liquid soil extract medium containing 0.25% Mg2O8Si3 was used in this study. Abilities of bacteria in phosphorous solubility, nitrogen fixation, and IAA synthesis were tested in NBRIP, Burk’s and NBRIP containing 100 mg L-1 tryptophan media, respectively. The results of the study indicated that five SSB showed their high capacity in silicate solubilization at pH 7.0, NaCl 0.0% and 35oC. However, at a concentration of NaCl 0.5%, these five SSB still solubilized well silicate mineral. Moreover, they also solubilized effectively three different insoluble phosphate sources of Ca3(PO4)2, AlPO4 and FePO4 with a range varied between 105.8 and 928.7 mg P2O5 L-1, 33.9 and 49.6 mg P2O5 L-1, and 1.94 and 34.1 mg P2O5 L-1, respectively. They also fixed biologically nitrogen with a range from 1.37 to 5.09 mg NH4+ L-1 after 2 incubation days. Finally, they also showed their ability in IAA synthesis with an amount between 4.85 and 51.5 mg IAA L-1. In short, these five SSB in this study not only had the ability in silicate solubilization but also had other functions in plant growth promotion.

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New bacterial strain of the genusOchrobactrumwith glyphosate-degrading activity

Cited by 60 publications

References 24 publications

Herbicide Glyphosate: Toxicity and Microbial Degradation

Herbicide Glyphosate: Toxicity and Microbial Degradation

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND GLYPHOSATE-DEGRADING Klebsiella oxytoca STRAIN SAW-5 IN SOILS FROM SARAWAK

Evaluation of some biophysical characteristics of five silicate solubilizing bacteria isolated from different ecosystems

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