A potent cadmium bioaccumulating Enterobacter cloacae strain displays phytobeneficial property in Cd-exposed rice seedlings

Ghosh, Antara; Pramanik, Krishnendu; Bhattacharya, Subhajit; Mondal, Subala; Ghosh, Sudip Kumar; Maiti, Tushar Kanti

doi:10.1016/j.crmicr.2021.100101

Cited by 16 publications

(4 citation statements)

References 82 publications

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“…Moreover, Abdollahi et al ( 2020 ) have reported that E. cloacae had MIC 3000 ug/ml and 50 ug/ml against Pb +2 and Cd +2 with accumulation capacity 45ug Pb +2 /ml and 30ug Cd +2 /ml. Also, Ghosh et al ( 2022 ) have reported that E. cloacae expressed a high potency of tolerance towards high concentrations of Cd +2 (4000 μg/ml), Pb +2 (3312 μg/ml), and As +3 (1500 μg/ml), where the removal efficiency of Cd +2 was recorded 72.11% (Abdollahi et al, 2020 ; Ghosh et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Bioremediation of industrial wastewater heavy metals using solo and consortium Enterobacter spp.

Kelany,

El-sawy,

El-Gendy

et al. 2023

Environ Monit Assess

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Heavy metals are considered the most common pollutants in industrial wastewater areas. Out of thirty bacterial isolates, only 3 isolates sighted the highest metal resistance activity for Zn+2, Fe+2, Pb+2, Co+2, Mn+2, Ni+2, and Cd+2. The biochemical and DNA homology identification with similarities 99.58%, 99.79%, and 99.86% of those isolates was identified and deposited in WDCM, respectively, as Enterobacter kobei OM144907 SCUF0000311, Enterobacter cloacae OM180597 SCUF0000312, and Enterobacter hormaechei OM181067 SCUF0000313. The minimum tolerance activity (MIC) of heavy metal concentrations against E. kobei and E. cloacae was 25, 15, and 15 mmol/l for Ni+2, Fe+2, and Mn+2, respectively, and 10 mmol/l for Zn+2, Pb+2, Co+2, and Cd+2, while against E. hormaechei, it is 15 mmol/l for Ni+2, Fe+2, and Mn+2 and 10 mmol/l for Zn+2, Pb+2, Co+2, and Cd+2. The consortium and solitary application of bacterial isolates towards heavy metal removal at 100%, 200%, and 300% industrial wastewater concentrations were conducted and showed that more than 90% removal of Zn+2, Fe+2, Pb+2, Mn+2, Ni+2, and Cd+2 from a non-concentrated polluted sample (100%) was reported by the three strains. With doubling the polluted sample concentration (200%), the highest removal efficiency for Zn+2, Pb+2, Mn+2, Ni+2, and Cd+2 was reported by E. cloacae as 70. 75, 66, 65, and 57%, respectively. Removal efficiency after increasing the polluted sample concentration to 300% showed that E. cloacae removed above 45% of all tested heavy metals except Pb+2. Ultimately, E. cloacae exposed the highest efficiency with recommendations for heavy metals removal under higher concentrations.

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Section: Discussionmentioning

confidence: 99%

Bioremediation of industrial wastewater heavy metals using solo and consortium Enterobacter spp.

Kelany,

El-sawy,

El-Gendy

et al. 2023

Environ Monit Assess

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“…Oxidative stress disturbs physiological and metabolic processes of the plants leading to a limitation in plant growth, crop production and yield, and consequently causes massive agricultural loss (Tran and Popova 2013 ). Recently, plant root-associated bacteria are globally used for the amelioration of crop performance to encounter heavy metal contamination in agricultural soils (Mitra et al 2018 ; He et al 2020 ; Ghosh et al 2022 ).…”

Section: Discussionmentioning

confidence: 99%

“…This crucial aspect considered as an interest gateway for scientists to search novel cost effective and eco-friendly methods to alleviate the abiotic stresses in field grown plants. The application of bacteria to mitigate stress-induced negative impact in plants and their role to make plants tougher toward abiotic stresses have been documented (Panlada et al 2013 ; Nadeem et al 2014 ; Kaushal and Wani 2016 ; Rizvi and Khan 2018 ; Ghosh et al 2022 ). In this study, the efect of S. maltophilia EPS inoculation on the antioxidant defense of safflower plants ( Carthamus tinctorius L.) exposed to different levels of Cd was investigated.…”

Section: Discussionmentioning

confidence: 99%

The endophyte Stenotrophomonas maltophilia EPS modulates endogenous antioxidant defense in safflower (Carthamus tinctorius L.) under cadmium stress

Hagaggi

Abdul‐Raouf²

2022

Arch Microbiol

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Cadmium (Cd) pollution in agricultural soils induces oxidative stress in plants that in turn is the foremost limiting factor for agricultural productivity. In past few decades, plant–metal–microbe interaction is of great interest as an emerging environmentally friendly technology that can be exploited to alleviate metal stress in plants. Considering these, in the present study an endophytic bacterium strain EPS has been isolated from the roots of common bean. The present strain was identified as Stenotrophomonas maltophilia based on 16S rRNA gene sequence. The strain showed Cd tolerance and Cd-adsorption potentials. The inoculation of strain EPS in safflower seeds significantly enhanced the antioxidant defense of plants under Cd-stress conditions through increasing the levels of antioxidant molecules like phenolics, flavonoids and carotenoids as well as improving the activities of the antioxidative enzymes including guaiacol peroxidase (POX), ascorbate peroxidase (APX) and superoxide dismutase (SOD). The output of this study is that strain EPS inoculation mitigates Cd-induced oxidative stress and consequently it may be beneficial, especially in Cd-contaminated crop fields.

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“…Associated with HM, these intracellular proteins can also lower the concentration of free ions in the cytoplasm where metal detoxification has occurred ( Etesami, 2018 ). A study by Ghosh et al (2022) reported that Enterobacter cloacae can remove HMs through a bioaccumulation process. The efficiency of HMs accumulation depends not only on the internal structure of the cell and space, genetic characteristics, and cellular processes for enzymatic catalysis, but also on the location from which the bacterial strain is isolated, in natural areas with extreme conditions or grows with adaptation in a contaminated place ( Pham et al, 2022 ).…”

Section: Discussionmentioning

confidence: 99%

Finding the best combination of autochthonous microorganisms with the most effective biosorption ability for heavy metals removal from wastewater

Jakovljević

Grujić²,

Simić³

et al. 2022

Front. Microbiol.

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The presence of heavy metals (HMs) in the environment represents a serious environmental problem. In this regard, this work was conceived with the aim of finding, among indigenous microorganisms, the species and their combinations with the best biosorption activity for the following HMs: zinc, lead, cadmium, copper, and nickel. The experiment was carried out in several steps: (1) isolation and identification of microbial strains from the Central Effluent Treatment Plant’s wastewater; (2) studying the interaction of microorganisms and the ability to form biofilms in 96-well plates; (3) testing the resistance of biofilms to HMs; (4) testing the growth of biofilms on AMB media carriers in the presence of HMS; and (5) biosorption assay. The selected strains used in this study were: Enterobacter cloacae, Klebsiella oxytoca, Serratia odorifera, and Saccharomyces cerevisiae. The best biofilm producers in control medium were K. oxytoca/S. odorifera (KS), followed by K. oxytoca/S. odorifera/S. cerevisiae (KSC), and E. cloacae/K. oxytoca/S. odorifera (EKS) after 10 days of incubation. Mixed cultures composed of three species showed the highest resistance to the presence of all tested metals. The best biosorption capacity was shown by KSC for Cu2+ (99.18%), followed by EKS for Pb2+ (99.14%) and Cd2+ (99.03%), K. oxytoca for Ni2+ (98.47%), and E. cloacae for Zn2+ (98.06%). This research offers a novel approach to using mixed biofilms for heavy metal removal processes as well as its potential application in the bioremediation of wastewater.

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A potent cadmium bioaccumulating Enterobacter cloacae strain displays phytobeneficial property in Cd-exposed rice seedlings

Cited by 16 publications

References 82 publications

Bioremediation of industrial wastewater heavy metals using solo and consortium Enterobacter spp.

Bioremediation of industrial wastewater heavy metals using solo and consortium Enterobacter spp.

The endophyte Stenotrophomonas maltophilia EPS modulates endogenous antioxidant defense in safflower (Carthamus tinctorius L.) under cadmium stress

Finding the best combination of autochthonous microorganisms with the most effective biosorption ability for heavy metals removal from wastewater

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