Evaluation of biphenyl- and polychlorinated-biphenyl (PCB) degrading <i>Rhodococcus</i> sp. MAPN-1 on growth of <i>Morus alba</i> by pot study

Sandhu, Monika; Paul, Atish T.; Singh, Raju; Jha, Pallavi

doi:10.1080/15226514.2020.1784088

Cited by 11 publications

(4 citation statements)

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“…Moreover, it has been reported that Dehalococcoides mccartyi often forms consortia with Methanosarcina and Desulfovibrio populations, which support this species in the dechlorination process. Aerobic bacteria (including Rhodococcus, Pseudomonas, and Bordetella) and fungi are also involved in PCB degradation [123,124], as reported by Sandhu and colleagues [125], who demonstrated the ability of Rhodococcus sp. MAPN-1 to improve Morus alba (mulberry plant) growth in PCB-spiked soil.…”

Section: Potential Of the Rhizomicrobiota In Urban Environmentsmentioning

confidence: 72%

Impact of Plant–Microbe Interactions with a Focus on Poorly Investigated Urban Ecosystems—A Review

Monaco,

Baldoni,

Naclerio

et al. 2024

Microorganisms

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The urbanization process, which began with the Industrial Revolution, has undergone a considerable increase over the past few decades. Urbanization strongly affects ecological processes, often deleteriously, because it is associated with a decrease in green spaces (areas of land covered by vegetation), loss of natural habitats, increased rates of species extinction, a greater prevalence of invasive and exotic species, and anthropogenic pollutant accumulation. In urban environments, green spaces play a key role by providing many ecological benefits and contributing to human psychophysical well-being. It is known that interactions between plants and microorganisms that occur in the rhizosphere are of paramount importance for plant health, soil fertility, and the correct functioning of plant ecosystems. The growing diffusion of DNA sequencing technologies and “omics” analyses has provided increasing information about the composition, structure, and function of the rhizomicrobiota. However, despite the considerable amount of data on rhizosphere communities and their interactions with plants in natural/rural contexts, current knowledge on microbial communities associated with plant roots in urban soils is still very scarce. The present review discusses both plant–microbe dynamics and factors that drive the composition of the rhizomicrobiota in poorly investigated urban settings and the potential use of beneficial microbes as an innovative biological tool to face the challenges that anthropized environments and climate change impose. Unravelling urban biodiversity will contribute to green space management, preservation, and development and, ultimately, to public health and safety.

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Section: Potential Of the Rhizomicrobiota In Urban Environmentsmentioning

confidence: 72%

Impact of Plant–Microbe Interactions with a Focus on Poorly Investigated Urban Ecosystems—A Review

Monaco,

Baldoni,

Naclerio

et al. 2024

Microorganisms

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“…Full-length 16S rRNA amplicon sequencing and NCBI blast demonstrated that A34 was closely related (nucleotide sequence identity 100%, 1371 bp) to Rhodococcus qingshengjii strains CCM4446, dji-6, and dji-6-2, which were isolated from soils contaminated by fungicide carbendazim or organic pollutants, or carbendazim-contaminated wastewater treatment facility Rhodococcus strains have been reported to possess plastic degradation capability, ,, but only limited number of whole genome sequences was available in NCBI, and genome sequences of other known plastic-degrading bacterial strains were collected and compared with A34 genome sequence to uncover the genome-level similarities and differences. The genome-level phylogenetic tree (see Figure S2a, Supporting Information) revealed that strain A34 is closely related to Rhodococcus ruber, a previously reported plastic degrading strain .…”

Section: Resultsmentioning

confidence: 99%

Polyethylene Degradation by a Rhodococcous Strain Isolated from Naturally Weathered Plastic Waste Enrichment

Tao,

Ouyang,

Zhou

et al. 2023

Environ. Sci. Technol.

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Polyethylene (PE) is the most widely produced synthetic polymer and the most abundant plastic waste worldwide due to its recalcitrance to biodegradation and low recycle rate. Microbial degradation of PE has been reported, but the underlying mechanisms are poorly understood. Here, we isolated a Rhodococcus strain A34 from 609 day enriched cultures derived from naturally weathered plastic waste and identified the potential key PE degradation enzymes. After 30 days incubation with A34, 1% weight loss was achieved. Decreased PE molecular weight, appearance of C–O and CO on PE, palmitic acid in the culture supernatant, and pits on the PE surface were observed. Proteomics analysis identified multiple key PE oxidation and depolymerization enzymes including one multicopper oxidase, one lipase, six esterase, and a few lipid transporters. Network analysis of proteomics data demonstrated the close relationships between PE degradation and metabolisms of phenylacetate, amino acids, secondary metabolites, and tricarboxylic acid cycles. The metabolic roadmap generated here provides critical insights for optimization of plastic degradation condition and assembly of artificial microbial communities for efficient plastic degradation.

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“…For instance, Achromobacter xylosoxidans IR08 degraded 4,4′-dichlorobiphenyl (diCB) metabolically ( Ilori et al, 2008 ), while Rhodococcus sp. MAPB-1 ( Sandhu et al, 2020 ) and Rhodococcus sp. WAY2 ( Garrido-Sanz et al, 2020 ) degraded it cometabolically.…”

Section: Introductionmentioning

confidence: 99%

PCB-77 biodegradation potential of biosurfactant producing bacterial isolates recovered from contaminated soil

Sandhu

Paul²,

Proćków³

et al. 2022

Front. Microbiol.

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Polychlorinated biphenyls (PCBs) are persistent organic pollutants widely distributed in the environment and possess deleterious health effects. The main objective of the study was to obtain bacterial isolates from PCB-contaminated soil for enhanced biodegradation of PCB-77. Selective enrichment resulted in the isolation of 33 strains of PCB-contaminated soil nearby Bhilai steel plant, Chhattisgarh, India. Based on the prominent growth using biphenyl as the sole carbon source and the confirmation of its degradation by GC-MS/MS analysis, four isolates were selected for further study. The isolates identified by 16S rRNA gene sequencing were Pseudomonas aeruginosa MAPB-2, Pseudomonas plecoglossicida MAPB-6, Brucella anthropi MAPB-9, and Priestia megaterium MAPB-27. The isolate MAPB-9 showed a degradation of 66.15% biphenyl, while MAPB-2, MAPB-6, and MAPB-27 showed a degradation of 62.06, 57.02, and 56.55%, respectively in 48 h. Additionally, the degradation ability of these strains was enhanced with addition of co-metabolite glucose (0.2%) in the culture medium. Addition of glucose showed 100% degradation of biphenyl by MAPB-9, in 48 h, while MAPB-6, MAPB-2, and MAPB-27 showed 97.1, 67.5, and 53.3% degradation, respectively as analyzed by GC-MS/MS. Furthermore, in the presence of inducer, PCB-77 was found to be 59.89, 30.49, 27.19, and 4.43% degraded by MAPB-6, MAPB-9, MAPB-2, and MAPB-27, respectively in 7 d. The production of biosurfactants that aid in biodegradation process were observed in all the isolates. This was confirmed by ATR-FTIR analysis that showed the presence of major functional groups (CH2, CH3, CH, = CH2, C–O–C, C-O) of the biosurfactant. The biosurfactants were further identified by HPTLC and GC-MS/MS analysis. Present study is the first to report PCB-77 degradation potential of Pseudomonas aeruginosa, B. anthropi, Pseudomonas plecoglossicida, and Priestia megaterium. Similarly, this is the first report on Pseudomonas plecoglossicida and Priestia megaterium for PCB biodegradation. Our results suggest that the above isolates can be used for the biodegradation of biphenyl and PCB-77 in PCB-contaminated soil.

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Evaluation of biphenyl- and polychlorinated-biphenyl (PCB) degrading Rhodococcus sp. MAPN-1 on growth of Morus alba by pot study

Cited by 11 publications

References 50 publications

Impact of Plant–Microbe Interactions with a Focus on Poorly Investigated Urban Ecosystems—A Review

Impact of Plant–Microbe Interactions with a Focus on Poorly Investigated Urban Ecosystems—A Review

Polyethylene Degradation by a Rhodococcous Strain Isolated from Naturally Weathered Plastic Waste Enrichment

PCB-77 biodegradation potential of biosurfactant producing bacterial isolates recovered from contaminated soil

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