Reclassification of Bacillus isronensis Shivaji et al. 2009 as Solibacillus isronensis comb. nov. and emended description of genus Solibacillus Krishnamurthi et al. 2009

Mual, Poonam; Singh, Nitin Kumar; Verma, Ashish; Schümann, Peter; Krishnamurthi, Srinivasan; Dastager, Syed G.; Mayilraj, Shanmugam

doi:10.1099/ijsem.0.000982

Cited by 20 publications

(13 citation statements)

References 38 publications

(38 reference statements)

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“…The identified FAMEs were designated as the biomarker profiles of various microbial groups according to the literature. Bacteria (i.e., 14:0, 15:0, 16:0, 17:0, and 16:1ω9c) (Bååth et al, 1992;Langer and Rinklebe, 2011;Mual et al, 2016) (Frostegård and Bååth, 1996;Jindal et al, 2013;Langer and Rinklebe, 2011;Moche et al, 2015), Gram-positive bacteria (GPB) (i.e., i15:0, a15:0, i16:0, i17:0, and a17:0) (Federle, 1986;Frostegård et al, 1993;Langer and Rinklebe, 2011;White et al, 1976;Zelles, 1997), actinomycetes (i.e., 10Me18:0) (Frostegård et al, 1993), arbuscular mycorrhizal fungi (AMF) (i.e., 16:1ω5c) (Olsson, 1999), and fungi (i.e., 18:1ω9c) (Olsson, 1999) were used as biomarkers to identify the respective groups of microorganisms.…”

Section: Microbial Fatty Acids and Dehydrogenase Activitymentioning

confidence: 99%

Slow pyrolyzed biochars from crop residues for soil metal(loid) immobilization and microbial community abundance in contaminated agricultural soils

et al. 2017

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This study evaluated the feasibility of using biochars produced from three types of crop residues for immobilizing Pb and As and their effects on the abundance of microbial community in contaminated lowland paddy (P-soil) and upland (U-soil) agricultural soils. Biochars were produced from umbrella tree [Maesopsis eminii] wood bark [WB], cocopeat [CP], and palm kernel shell [PKS] at 500 °C by slow pyrolysis at a heating rate of 10 °C min. Soils were incubated with 5% (w w) biochars at 25 °C and 70% water holding capacity for 45 d. The biochar effects on metal immobilization were evaluated by sequential extraction of the treated soil, and the microbial community was determined by microbial fatty acid profiles and dehydrogenase activity. The addition of WB caused the largest decrease in Pb in the exchangeable fraction (P-soil: 77.7%, U-soil: 91.5%), followed by CP (P-soil: 67.1%, U-soil: 81.1%) and PKS (P-soil: 9.1%, U-soil: 20.0%) compared to that by the control. In contrast, the additions of WB and CP increased the exchangeable As in U-soil by 84.6% and 14.8%, respectively. Alkalinity and high phosphorous content of biochars might be attributed to the Pb immobilization and As mobilization, respectively. The silicon content in biochars is also an influencing factor in increasing the As mobility. However, no considerable effects of biochars on the microbial community abundance and dehydrogenase activity were found in both soils.

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Section: Microbial Fatty Acids and Dehydrogenase Activitymentioning

confidence: 99%

Slow pyrolyzed biochars from crop residues for soil metal(loid) immobilization and microbial community abundance in contaminated agricultural soils

et al. 2017

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“…Solibacillus, which is the third (2.39%) most preponderant genus in the FN4 soil, is a small group in the family Planococcaceae. Only three rarely isolated species are known, namely S. silvestris, S. isorensis [70,71] and S. kalamii [72]. Members of the genus have been isolated from cryotube used for sampling the upper atmosphere, high-efficiency particulate arrestance (HEPA) filter, and identified as key colonizers of biofilter in a waste gas treatment plant [72,73].…”

Section: Discussionmentioning

confidence: 99%

Remarkable shift in structural and functional properties of an animal charcoal-polluted soil accentuated by inorganic nutrient amendment

Salam¹,

Obayori

2020

Journal of Genetic Engineering and Biotechnology

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Background Soils polluted with animal charcoal from skin and hide cottage industries harbour extremely toxic and carcinogenic hydrocarbon pollutants and thus require a bio-based eco-friendly strategy for their depuration. The effects of carbon-free mineral medium (CFMM) amendment on hydrocarbon degradation and microbial community structure and function in an animal charcoal-polluted soil was monitored for 6 weeks in field moist microcosms consisting of CFMM-treated soil (FN4) and an untreated control (FN1). Hydrocarbon degradation was monitored using gas chromatography-flame ionization detector (GC-FID), and changes in microbial community structure were monitored using Kraken, while functional annotation of putative open reading frames (ORFs) was done using KEGG KofamKOALA and NCBI’s conserved domain database (CDD). Results Gas chromatographic analysis of hydrocarbon fractions revealed the removal of 84.02% and 82.38% aliphatic and 70.09% and 70.14% aromatic fractions in FN4 and FN1 microcosms in 42 days. Shotgun metagenomic analysis of the two metagenomes revealed a remarkable shift in the microbial community structure. In the FN4 metagenome, 92.97% of the population belong to the phylum Firmicutes and its dominant representative genera Anoxybacillus (64.58%), Bacillus (21.47%) and Solibacillus (2.39%). In untreated FN1 metagenome, the phyla Proteobacteria (56.12%), Actinobacteria (23.79%) and Firmicutes (11.20%), and the genera Xanthobacter (9.73%), Rhizobium (7.49%) and Corynebacterium (7.35%), were preponderant. Functional annotation of putative ORFs from the two metagenomes revealed the detection of degradation genes for aromatic hydrocarbons, benzoate, xylene, chlorocyclohexane/chlorobenzene, toluene and several others in FN1 metagenome. In the FN4 metagenome, only seven hydrocarbon degradation genes were detected. Conclusion This study revealed that though CFMM amendment slightly increases the rate of hydrocarbon degradation, it negatively impacts the structural and functional properties of the animal charcoal-polluted soil. It also revealed that intrinsic bioremediation of the polluted soil could be enhanced via addition of water and aeration.

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“…Solibacillus, which is the third (2.39%) most preponderant genus in the FN4 soil, is a small group in the family Planococcaceae. Only three rarely isolated species are known, namely S. silvestris, S. isorensis (Shivaji et al 2009;Mual et al 2016) and S. kalamii. The genus came into being in 2009 when Krishnamurthi et al (2009) reclassi ed Bacillus silvestris to S. silvestris.…”

Section: Discussionmentioning

confidence: 99%

Remarkable Shift In Structural And Functional Properties of An Animal Charcoal Polluted Soil Accentuated By Inorganic Nutrients Amendment

Salam

Obayori

2020

Preprint

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Abstract The effects of carbon-free mineral medium (CFMM) amendment on hydrocarbon degradation and microbial community structure and function in an animal charcoal polluted soil was monitored for six weeks in field moist microcosms consisting of CFMM treated soil (FN4) and an untreated control (FN1). Gas chromatographic analysis of hydrocarbon fractions revealed the removal 84.02% and 82.38% and 70.09% and 70.14% aliphatic and aromatic fractions in FN4 and FN1 microcosms in 42 days. Shotgun metagenomic analysis of the two metagenomes revealed a remarkable shift in the microbial community structure of FN4 metagenome with 92.97% of the population belonging to the phylum Firmicutes and its dominant representative genera Anoxybacillus (64.58%), Bacillus (21.47%) and Solibacillus (2.39%). In untreated FN1 metagenome, the phyla Proteobacteria (56.12%), Actinobacteria (23.79%), Firmicutes (11.20%); and the genera Xanthobacter (9.73%), Rhizobium (7.49%) and Corynebacterium (7.35%) were preponderant. Functional annotation of putative ORFs from the two metagenomes revealed the detection of degradation genes for benzoate (pcaD, mhpF, aliB, benD-xylL, benC-xylZ, badH, had, dmpD, ligC, CMLE, pcaL, acd), xylene (mhpF, benD-xylL, benC-xylZ, dmpD, cymB, cmtB), chlorocyclohexane/chlorobenzene (dehH, dhaA, linC, linX, pcpC), toluene (bbsG, bbsC, bbsD, tsaC1), and several others in FN1 metagenome. In FN4 metagenome, only seven hydrocarbon degradation genes namely dmpH, mhpD, bphH, nemA and three others were detected. This study has revealed that CFMM amendment negatively impacts the structural and functional properties of the animal charcoal polluted soil. It also revealed that intrinsic bioremediation of the polluted soil could be enhanced via addition of water and aeration.

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Reclassification of Bacillus isronensis Shivaji et al. 2009 as Solibacillus isronensis comb. nov. and emended description of genus Solibacillus Krishnamurthi et al. 2009

Cited by 20 publications

References 38 publications

Slow pyrolyzed biochars from crop residues for soil metal(loid) immobilization and microbial community abundance in contaminated agricultural soils

Slow pyrolyzed biochars from crop residues for soil metal(loid) immobilization and microbial community abundance in contaminated agricultural soils

Remarkable shift in structural and functional properties of an animal charcoal-polluted soil accentuated by inorganic nutrient amendment

Remarkable Shift In Structural And Functional Properties of An Animal Charcoal Polluted Soil Accentuated By Inorganic Nutrients Amendment

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