Bioremediation: an emerging effective approach towards environment restoration

Pande, Veni; Pandey, Satish Chandra; Sati, Diksha; Pande, Veena; Samant, Mukesh

doi:10.1007/s42398-020-00099-w

Cited by 90 publications

(27 citation statements)

References 83 publications

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“…It was due to the sample was placed at room temperature (25°C-28°C) where this range is good enough for bioremediation. Pande et al, (2020) reported that the optimal temperature in the bioremediation process is approximately 25°C- temperature during the biodegradation process for 28 days of treatment. This is related to Sihag Pathak & Jaroli (2014) that the high activity of microorganisms in degrading oil was supported by an optimal temperature, and the biological processes in bacteria generally increase during the increasing temperature.…”

Section: Temperaturementioning

confidence: 99%

“…This is related to Sihag Pathak & Jaroli (2014) that the high activity of microorganisms in degrading oil was supported by an optimal temperature, and the biological processes in bacteria generally increase during the increasing temperature. Furthermore, bacterial cells were possible to be inhibited and killed by the denaturation of maximum temperature (Pande et al, 2020).…”

Section: Temperaturementioning

confidence: 99%

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Viability Test of Hydrocarbonoclastic Bacteria Consortium Entrapted on Sawdust Material

et al. 2021

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Oil spills in the sea are generally prevented in various ways, one of them is the bioaugmentation method through bacterial entrapment on sawdust carriers. The entrapment of bacteria is one of the bacterial immobilization techniques. The potential of bacterial consortium on sawdust is still not widely used, especially in long-term storage. The purpose of this study was to obtain the viability of hydrocarbonoclastic bacterial consortium on sawdust after 0, 7, and 41 days of storage. The bacterial consortium consists of Bacillus aquimaris, B. megaterium, B. pumilus, Halobacillus trueperi, and Rhodobacteraceae bacterium. The samples were tested by culturing the immobilized bacterial consortium of 0, 7, and 41 days on falcon tubes containing crude oil and seawater. The viability of the immobilized bacterial consortium was tested for 28 days (days 0, 7, 14, 21, and 28) by enriched the bacterial populations periodically. The viability test was also supported by the measurement of environmental parameters on the 1 st day and the 28 th day such as DO, pH, salinity and, temperature. The results show that bacterial consortium in all storage periods was viable on sawdust carriers which related to the high number of bacterial populations on the 28 th day. The most viable bacterial consortium on sawdust was the 0-day storage (9.59 x 10 8 CFU/ml) which was indicated by the increases phase at the end of the day. It was proved that the bacteria are still productive and could degrade petroleum hydrocarbons.

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Section: Temperaturementioning

confidence: 99%

Section: Temperaturementioning

confidence: 99%

Viability Test of Hydrocarbonoclastic Bacteria Consortium Entrapted on Sawdust Material

et al. 2021

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“…Bacterial motility/chemotaxis also affects biofilm formation, which can further affects the biodegradability [37]. Biofilm is a complex form of bacteria consisting of surface-associated bacterial cells held together by the matrix consisting of extracellular polymeric substance (EPS).…”

Section: The Nzvi-induced Scv Phenotype Partially Lost Their Environmental Fitness-related Traitsmentioning

confidence: 99%

Characteristics of a small colony variant of Pseudomonas putida F1 emerged from repetitive exposure to nanoscale zerovalent iron

Kotchaplai¹,

Khan²,

Vangnai³

2021

ScienceAsia

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While nanoscale zero valent iron (NZVI) is a promising alternative for in situ remediation, its potential environmental impact is a major concern. Herein, irreversible small colony variant (SCV) of Pseudomonas putida F1, obtained from the repetitive exposure to NZVI, was firstly reported. This SCV phenotype exhibited several altered characteristics including slower growth rate or longer lag phase, loss of swimming ability, and reduced biofilm formation. Regardless of reversibility, the persistence to gentamicin was used to distinguish the phenotypic variant from the normal phenotype and to further explore factors affecting this occurrence. By the third cycles of the repetitive exposure to 0.1 and 0.5 g/l of NZVI, the frequency of the phenotypic variant increased by 67-and 342-times, in comparison to those of non-exposed cells, respectively. While the repetitive exposure to 0.5 g/l of Fe(II) also resulted in the rising of the gentamicin-persistent phenotype by 65-fold by the third cycle of exposure, the repetitive exposure to either oxidized NZVI or Fe(III) did not induce the phenotypic variant. These results suggest that the emergence of this phenotype appears to associate with the NZVI-mediated oxidative stress. Together, this study suggests that the exposure to NZVI could trigger the emergence of phenotypic variants which could result in an environmental fitness trade-off.

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“…Development of drought-tolerant varieties, practicing better resource organization, changing the crop calendars, etc are some of the significant strategies used in combating drought. The integration of microbes as a part of cultivation system can be yet another significant as well as eco-friendly strategy against drought (5,6) economic and sustainable way to uplift production during extreme water deficit. Inside the soil environment, plant-microbe relations are decisive in maintaining primary productivity.…”

Section: Introductionmentioning

confidence: 99%

Recent Advances in PGPR and Molecular Mechanisms Involved in Drought Stress Tolerance

Sati¹,

Pande²,

Sc³

et al. 2021

Preprint

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Increased severity of droughts, due to anthropogenic activities and global warming has imposed a severe threat on agricultural productivity ever before. This has further advanced the need for some eco-friendly approaches to ensure global food security. In this regard, application of plant growth-promoting rhizobacteria (PGPR) can be beneficial. PGPR through various mechanisms viz. osmotic adjustments, increased antioxidant, phytohormone production, regulating stomatal conductivity, increased nutrient uptake, releasing Volatile organic compounds (VOCs), and Exo-polysaccharide (EPS) production, etc not only ensures the plant’s survival during drought but also augment its growth. This review, extensively discusses the various mechanisms of PGPR in drought stress tolerance. We have also summarized the recent molecular and omics-based approaches for elucidating the role of drought responsive genes. The manuscript presents an in-depth mechanistic approach to combat the drought stress and also deals with designing PGPR based bioinoculants. Lastly, we present a possible sequence of steps for increasing the success rate of bioinoculants.

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Bioremediation: an emerging effective approach towards environment restoration

Cited by 90 publications

References 83 publications

Viability Test of Hydrocarbonoclastic Bacteria Consortium Entrapted on Sawdust Material

Viability Test of Hydrocarbonoclastic Bacteria Consortium Entrapted on Sawdust Material

Characteristics of a small colony variant of Pseudomonas putida F1 emerged from repetitive exposure to nanoscale zerovalent iron

Recent Advances in PGPR and Molecular Mechanisms Involved in Drought Stress Tolerance

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