Kinetics of Endosulfan Biodegradation by<i>Stenotrophomonas maltophilia</i>EN-1 Isolated From Pesticide-Contaminated Soil

Zaffar, Habiba; Sabir, Syeda Raheela; Pervez, Arshid; Naqvi, Tatheer Alam

doi:10.1080/15320383.2018.1470605

Cited by 15 publications

(6 citation statements)

References 36 publications

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“…(2017) applied this Monod model in order to determine the growth kinetics of Enterobacter cloacae strain TA7. Recently, this kinetic model has also been used to describe the microbial growth as it defines the relationship between growth limiting substrate concentration and specific growth rate (Zaffar et al., 2018).…”

Section: Resultsmentioning

confidence: 99%

Immobilized cells of a novel bacterium increased the degradation of N-methylated carbamates under low temperature conditions

Fareed

Riaz

Nawaz

et al. 2019

Heliyon

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Carbamates are synthetic pesticides, extensively used throughout the world due to their broad specificity against various insect pests. However, their enormous and inadequate use have made them a potential threat to the environment. At low temperature, degradation of carbamates becomes difficult mainly because of low biological activity. In the present study, we isolated a bacterial strain from a low temperature climate where the N-methylated carbamates are used for crop protection. The bacterium, was identified as Pseudomonas plecoglossicida strain (TA3) by 16S rRNA analysis. Degradation experiments with both free and immobilized cells in minimal salt medium indicated that the strain TA3 utilized carbaryl, carbofuran and aldicarb as both carbon and nitrogen source. TA3 can grow well at 4 °C and demonstrated the ability to degrade three carbamates (50 μgml−1) at low temperature. The immobilized cells were found more efficient than their free cells counter parts. Immobilized cells has ability to degrade 100% of carbamates at 30 °C while 80% at 4 °C but incase of their free cells counter parts the efficiency to degrade carbamates was less which was 60% at 4 °C and 80% at 30 °C. TA3 free cellsextract also depicted high activity against all the three carbamates even at 4 °C indicating a possible enzymatic mechanism of degradation.

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Section: Resultsmentioning

confidence: 99%

Immobilized cells of a novel bacterium increased the degradation of N-methylated carbamates under low temperature conditions

Fareed

Riaz

Nawaz

et al. 2019

Heliyon

Self Cite

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“…A mineralization pathway involving dechlorination, hydroxylation, and carboxylation processes was proposed based on genome annotation of the DDT degradation gene and GC-MS analysis of metabolites (Pan et al, 2016). Zaffar et al (2018) reported that a S. maltophilia EM-1 strain degrades the organochlorinated pesticide endosulfan. Endosulfan was the only sulphur source used by the bacteria.…”

Section: Stenotrophomonas In Rhizoremediationmentioning

confidence: 99%

Stenotrophomonas in diversified cropping systems: friend or foe?

Kumar,

Rithesh,

Kumar

et al. 2023

Front. Microbiol.

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In the current scenario, the use of synthetic fertilizers is at its peak, which is an expensive affair, possesses harmful effects to the environment, negatively affecting soil fertility and beneficial soil microfauna as well as human health. Because of this, the demand for natural, chemical-free, and organic foods is increasing day by day. Therefore, in the present circumstances use of biofertilizers for plant growth-promotion and microbe-based biopesticides against biotic stresses are alternative options to reduce the risk of both synthetic fertilizers and pesticides. The plant growth promoting rhizobacteria (PGPR) and microbial biocontrol agents are ecologically safe and effective. Owning their beneficial properties on plant systems without harming the ecosystem, they are catching the widespread interest of researchers, agriculturists, and industrialists. In this context, the genus Stenotrophomonas is an emerging potential source of both biofertilizer and biopesticide. This genus is particularly known for producing osmoprotective substances which play a key role in cellular functions, i.e., DNA replication, DNA-protein interactions, and cellular metabolism to regulate the osmotic balance, and also acts as effective stabilizers of enzymes. Moreover, few species of this genus are disease causing agents in humans that is why; it has become an emerging field of research in the present scenario. In the past, many studies were conducted on exploring the different applications of Stenotrophomonas in various fields, however, further researches are required to explore the various functions of Stenotrophomonas in plant growth promotion and management of pests and diseases under diverse growth conditions and to demonstrate its interaction with plant and soil systems. The present review discusses various plant growth and biocontrol attributes of the genus Stenotrophomonas in various food crops along with knowledge gaps. Additionally, the potential risks and challenges associated with the use of Stenotrophomonas in agriculture systems have also been discussed along with a call for further research in this area.

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“…It mainly affects the central nervous system. However, it has hematotoxic, genotoxic, nephrotoxic and carcinogenic effects, and can be fatal even within a short exposure period [7] .…”

Section: 22harm To Humansmentioning

confidence: 99%

Investigation and assessment of soil contaminated by organophosphorus pesticides using spot setting method

Xiao¹,

Diao

Jin

et al. 2023

E3S Web of Conf.

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The contaminated soil caused by an organophosphorus pesticide production enterprise was evaluated, in order to provide constructive suggestions for the future remediation work. This study follows the basic technical route of sampling with the method of distribution, and combined with the relevant national laws and regulations and the actual situation of the site to evaluate and analyze, and finally find out whether the characteristic pollutants of the contaminated site exceed the standard and the environmental health risk. The results show that in the selected contaminated sites, the method can be implemented and obtained clear analysis results. The characteristic pollutants such as benzene, ethiophosphorus and parathion are far beyond the national standards, and seriously endanger the life and health of the surrounding residents. Conclusions:1) In the assessment of some contaminated sites, especially those contaminated by organophosphorus pesticides, the sampling method has the advantages of uniform, extensive, accurate and low sampling cost;2) The pollutants related to the polluted site, especially the volatile organic compounds such as benzene and parathion, are much higher than the limit value, and the peculiar smell is obvious, which seriously endangers the life and health of surrounding residents, causing the attention of relevant departments and providing guiding opinions for the future restoration work. In the future, the pollutants in the polluted site will be effectively removed through the restoration work. To ensure the life and health of neighboring residents, and promote China's ecological civilization construction.

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Kinetics of Endosulfan Biodegradation byStenotrophomonas maltophiliaEN-1 Isolated From Pesticide-Contaminated Soil

Cited by 15 publications

References 36 publications

Immobilized cells of a novel bacterium increased the degradation of N-methylated carbamates under low temperature conditions

Immobilized cells of a novel bacterium increased the degradation of N-methylated carbamates under low temperature conditions

Stenotrophomonas in diversified cropping systems: friend or foe?

Investigation and assessment of soil contaminated by organophosphorus pesticides using spot setting method

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