Implications of Benzoate Induced Alterations in Cell Morphology and Physiology in Pseudomonas aeruginosa TMR2.13 for Potential Application in Bioremediation and Monitoring Approaches

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

“…It is hypothesized that the uptake of iron increased the metabolic activity of the cells which was reflected as an increase in the carbon content of the bacterial cells as observed in EDS of the cells and also led to an increase in biomass of the cells which was noted in the previous study [37]. Similar SEM imaging of cells has been reported in the case of Pseudomonas aeruginosa [10] and accumulation of metals by the EPS of bacterial cells has been reported in earlier studies on Bacillus sp, Serratia , and Kocuria [38], Rhodobium marinum , and Rhodobacter sphaeroides [39]. Bacillus licheniformis has exhibited variation in the production of the EPS in the presence of heavy metals such as cadmium, chromium, and mercury.…”

“…EPS from Pseudomonas sp. was found to be a biosurfactant that emulsified oil and water by reducing the surface tension between the two phases [10]. Metal chelation by EPS is significant in bioremediation as it involves detoxification of metals such as arsenic, chromium, cadmium, mercury, and copper by bioaccumulation of these metals in their exopolymers.…”

Bioprospects of Coastal Eubacteria

“…P. aeruginosa is a well-documented denitrifying bacterium (Brenner et al 2005;Chayabutra and Ju 2000) and is known to play a typically active and functional role as a denitrifier (De Sousa and Bhosle 2012a). This ubiquitous species has unique and attractive pigment characteristics and an ability to transform a wide variety of natural and unnatural organic compounds, including aliphatic, aromatic and polycyclic aromatic hydrocarbons (Chayabutra and Ju 2000;De Sousa and Bhosle 2012a;Zhang et al 2011).…”

“…This phenomenon induces a decrease in intermediate nitrite accumulation in the presence of the aromatic hydrocarbon. Accordingly, as the benzoate concentration is increased in the medium, the nitrite formed binds to the excess benzoate available, thereby preventing its accumulation in the medium (De Sousa and Bhosle 2012a). Hexadecane on the other hand, when added to a liquid medium, forms an immiscible layer at the surface which impedes air penetration resulting in scarcity of oxygen levels available for the culture, thus instigating the denitrification pathway of the culture at a faster rate than otherwise (Wilson and Bower 1997).…”

Studies on Siderophore and Pigment Produced by an Adhered Bacterial Strain Halobacillus trueperi MXM-16 from the Mangrove Ecosystem of Goa, India

“…Sand dune bacteria, Pseudomonas aeruginosa TMR2.13 can grow on sodium benzoate up to 2 % and Bacillus sp. can tolerate up to 1 % of sodium benzoate [23,25,26]. Earlier studies have shown that utilization of the aromatic compound puts a greater stress on the bacteria for the demand of oxygen as a result of which they downplay the formation of pigment [23].…”