Isolation and characterization of bacillus amyloliquefaciens 6A: A novel kerosene oil degrading bacterium

GROWTH PROMOTION OF GENETICALLY IMPROVED Pinus taeda SEEDLINGS BY INOCULATION WITH SPECIES OF Bacillus.

“…However, a broader range of plant growth-promoting mechanisms has been suggested, especially, for B. amyloliquefaciens. Shahzadi et al (2019) reported that this species can degrade long chained hydrocarbons, producing small metabolites. Other enzymes described to occur in B. amyloliquefaciens strains include chitinases (Wang et al, 2002), proteases (Lee et al, 2010) and laccases (Pan et al, 2011).…”

“…This, in fact, may help plant growth by accelerating decomposition of organic residues (even the more chemically complex ones) and nutrient mineralization. Lipase, starch hydrolysis and nitrate reduction activities reported in B. amyloliquefaciens (Shahzadi et al, 2019) are also properties that may improve soil fertility. Therefore, plant nutrition may be increased, reflecting on enhanced plant height and biomass production.…”

“…Also, enzymatic activity of B. amyloliquefaciens related to degradation of complex substrates (Wang et al, 2002, Pan et al, 2011Shahzadi et al;2019) may be of extreme value when Pinus is introduced in previouslycultivated soils, with higher quantities of acicula, bark and leftover roots, as well as unbalanced C:N ratio. In this situation, bacteria may accelerate degradation of these organic compounds and improve nutrient mineralization, which may have positive effects on plant nutrition, growth, and improved wood production.…”

Kerosene tolerance in Achromobacter and Pseudomonas species

“…Generally, aliphatic and aromatic hydrocarbons which exist in the composition of petroleum and petroleum products are very toxic for most of the bacteria. Nevertheless, a number of bacteria able to tolerate and degrade different hydrocarbons have been reported (Leahy and Colwell 1990;Chikere et al 2011;Mnif et al 2011;Varjani 2017;Xu et al 2018;Shahzadi et al 2019). Most of the bacteria able to tolerate and degrade toxic hydrocarbons were isolated mainly from the petroleum and petroleum product-polluted sites.…”

“…Consequently, the isolation from the contaminated environments of bacteria with high hydrocarbon degrading ability can serve as promising tool for the bioremediation of petroleum and petroleum product-polluted sites (Patowary et al 2016). Kerosene, also known as paraffin or paraffin oil, is a refined petroleum product which contains up to 260 aliphatic and aromatic hydrocarbons (C 6 -C 17 ), including toxic compounds, such as benzene, toluene, trimethylbenzene, ethylbenzene, xylenes, n-hexane, trimethylpentane, naphthalenes, and other PAHs (Ritchie et al 2003;Shahzadi et al 2019). Many isolated bacteria possess the ability to completely degrade only simple petroleum hydrocarbons.…”