Differential Multi-cellularity Is Required for the Adaptation for Bacillus licheniformis to Withstand Heavy Metals Toxicity

Channarayapatna-Ramesh, Sunilkumar; Stephen-Victor, Emmanuel; Naripogu, Kishore Babu; Kumar, J.; Nuthan, Bettadapura Rameshgowda; Marulasiddaswamy, K. M.; Kini, K. Ramachandra; Geetha, N.

doi:10.1007/s12088-021-00958-y

Cited by 6 publications

(3 citation statements)

References 25 publications

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“…have been studied for their role in the removal of heavy metals such as lead, zinc, and copper from sludge waste from paper industries [34]. Bioremediation using EPS from cyanobacteria and eubacteria has been explored [35,36].…”

Section: Discussionmentioning

confidence: 99%

“…The EPS formation by this bacterium was also associated with a change in the morphology of Bacillus licheniformis cells ranging from filamentous to doughnut-shaped cells to resist metal toxicity. Therefore, the production of EPS and changes in cell morphology has been identified as important evidence that allows these bacteria to participate in bioremediation [35]. Cyanobacteria like Gloeothece sp.…”

Section: Discussionmentioning

confidence: 99%

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Characterization of bioemulsifying EPS from Halobacillus trueperi MXM‐16, a halophilic adhered bacterial isolate from the mangrove ecosystem

Kharangate-Lad

Bhosle

2022

J Basic Microbiol

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Exopolymeric substances (EPS) produced by bacterial cells play a crucial role in the interaction of the cells with the surrounding environment. Halobacillus trueperi manxer mangrove‐16, an adhered bacterial isolate from the mangrove ecosystem was found to produce EPS that was observed by Alcian blue staining and congo red‐coomassie blue agar. The EPS of the bacterial isolate exhibited emulsifying properties. Purification of the EPS by dialysis showed an emulsification index of 80% with hexadecane. Qualitative analysis and Fourier's Infrared spectroscopy (FTIR) revealed that the EPS was a glycoprotein in nature. The EPS showed no surface‐active properties. Further exploration of the potential of the EPS interaction with metal solutions showed the ability of the bioemulsifier to cause precipitation in the metal solutions and particularly change the color of the Chromium (VI) solution. The scanning electron microscopy‐energy‐dispersive X‐ray spectroscopy (SEM‐EDS) of the cells and EPS particularly indicated the interaction of the EPS with the (Fe0) zerovalent iron nanoparticles and its effect on the cells and EPS of the bacteria. It is therefore concluded that the EPS is a crucial component that anchors the bacteria to particulate matter in the mangrove ecosystem and also plays an important role in interaction with metals and hydrocarbons.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Characterization of bioemulsifying EPS from Halobacillus trueperi MXM‐16, a halophilic adhered bacterial isolate from the mangrove ecosystem

Kharangate-Lad

Bhosle

2022

J Basic Microbiol

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“…Heat stress resulting from elevated ambient temperature is one of the most environmental stresses faced by the microbes, particularly when they enter mammalian hosts [67].Thus, the ability to sense and adapt to environmental temperature perturbations represent a life-or-death challenge for several species [68]. Moreover, thermosensors play a vital role in survival and pathogenesis of various microbes as upon host infection the rise in temperature leads to the activation of various virulence factors that help them in immune invasion.…”

Section: Conclusion and Future Prospectsmentioning

confidence: 99%

Microbial Mechanisms of Heat Sensing

2022

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Temperature is one of the ubiquitous signals that control both the development as well as virulence of various microbial species. Therefore their survival is dependent upon initiating appropriate response upon temperature fluctuations. In particular, pathogenic microbes exploit host-temperature sensing mechanisms for triggering the expression of virulence genes. Many studies have revealed that the biomolecules within a cell such as DNA, RNA, lipids and proteins help in sensing change in temperature, thereby acting as thermosensors. This review shall provide an insight into the different mechanisms of thermosensing and how they aid pathogenic microbes in host invasion.

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An insight into stress induced phytocompounds produced in common crops related to metal survival

2022

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Differential Multi-cellularity Is Required for the Adaptation for Bacillus licheniformis to Withstand Heavy Metals Toxicity

Cited by 6 publications

References 25 publications

Characterization of bioemulsifying EPS from Halobacillus trueperi MXM‐16, a halophilic adhered bacterial isolate from the mangrove ecosystem

Characterization of bioemulsifying EPS from Halobacillus trueperi MXM‐16, a halophilic adhered bacterial isolate from the mangrove ecosystem

Microbial Mechanisms of Heat Sensing

An insight into stress induced phytocompounds produced in common crops related to metal survival

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