Microbial degradation of bis(tributyltin) oxide

Barug, D.

doi:10.1016/0045-6535(81)90185-5

Cited by 93 publications

(40 citation statements)

References 5 publications

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“…To our knowledge, the biochemical mechanism of organotin degradation by a microorganism has not been investigated in de- tail, but microbial degradation of organotin by water samples (16,17), soils (3,22,28), and isolated bacteria (4,23,36) have been demonstrated. To clarify the TPT degradation mechanism by strain CNR15, we prepared a TPT-grown resting-cell suspension and its cell-free culture supernatant and investigated the localization of the TPT degradation activities.…”

Section: Resultsmentioning

confidence: 99%

Degradation of Triphenyltin by a Fluorescent Pseudomonad

Inoue

Takimura

Fuse

et al. 2000

Appl Environ Microbiol

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Triphenyltin (TPT)-degrading bacteria were screened by a simple technique using a post-column highperformance liquid chromatography using 3,3,4,7-tetrahydroxyflavone as a post-column reagent for determination of TPT and its metabolite, diphenyltin (DPT). An isolated strain, strain CNR15, was identified as Pseudomonas chlororaphis on the basis of its morphological and biochemical features. The incubation of strain CNR15 in a medium containing glycerol, succinate, and 130 M TPT resulted in the rapid degradation of TPT and the accumulation of approximately 40 M DPT as the only metabolite after 48 h. The culture supernatants of strain CNR15, grown with or without TPT, exhibited a TPT degradation activity, whereas the resting cells were not capable of degrading TPT. TPT was stoichiometrically degraded to DPT by the solid-phase extract of the culture supernatant, and benzene was detected as another degradation product. We found that the TPT degradation was catalyzed by low-molecular-mass substances (approximately 1,000 Da) in the extract, termed the TPT-degrading factor. The other fluorescent pseudomonads, P. chlororaphis ATCC 9446, Pseudomonas fluorescens ATCC 13525, and Pseudomonas aeruginosa ATCC 15692, also showed TPT degradation activity similar to strain CNR15 in the solid-phase extracts of their culture supernatants. These results suggest that the extracellular low-molecular-mass substance that is universally produced by the fluorescent pseudomonad could function as a potent catalyst to cometabolite TPT in the environment.

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Section: Resultsmentioning

confidence: 99%

Degradation of Triphenyltin by a Fluorescent Pseudomonad

Inoue

Takimura

Fuse

et al. 2000

Appl Environ Microbiol

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“…Microorganisms capable of TBT uptake include certain fungi, viz., Coniophora puteana, Trametes versicolor, Chaetomium globosum, Aureobacidium pullulans, and Cunninghamella elegans (Barug 1981;Orsler and Holland 1982;Gadd et al 1990), bacteria, e.g., Alcaligenes faecalis, Flavobacterium sp., and many Pseudomonas species (Visoottiviseth et al 1994;Kawai et al 1998;Inoue et al 2000Inoue et al , 2003Yamaoka 2003;Roy et al 2004;Roy and Bhosle 2005;Stasinakis et al 2005). Seligman et al 1988 reported that microbial degradation was the primary process for TBT degradation in seawater and determined that the half-life for TBT was approximately 6-7 days.…”

Section: Introductionmentioning

confidence: 99%

Biochemistry of TBT-Degrading Marine Pseudomonads Isolated from Indian Coastal Waters

Sampath

Venkatakrishnan

Ravichandran

et al. 2011

Water Air Soil Pollut

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Tributyltin (TBT) is a very effective biocide and an active ingredient in antifouling paints. Screening along the Indian coast yielded 49 bacterial isolates capable of TBT assimilation. The screening was done based on the ability of bacteria to grow in mineral salt medium (MSM) containing TBT as the sole source of carbon. All the isolates produced exopolysaccharides (biosurfactants) in the medium which aid in emulsification and thus ease bioavailability of TBT. Five isolates were identified as potent TBT degraders (namely, Pseudomonas pseudoalcaligenes, Pseudomonas stutzeri, Pseudomonas mendocina, Pseudomonas putida, and Pseudomonas balearica) based on their biomass production in MSM containing TBT as the sole source of carbon. In addition to evaluating the potential of individual bacterial strains, the study also focused on using a consortium of bacteria to explore their synergistic effect when grown on TBT. Further tests like growth profile, rhamnolipid secretion profile, extracellular protein secretion profile, and detection of siderophores were performed on these isolates when grown in MSM supplemented with 2 mM TBT concentration. Emulsification activity of the crude extracellular polysaccharides against kerosene was evaluated. It can be therefore inferred that TBT degradation by these marine pseudomonads is a twostep process: (a) dispersion of TBT in the aqueous phase and (b) tin-carbon bond cleavage by siderophores affecting debutylation of TBT. The consortium of bacteria may be effective in the treatment of TBT-contaminated waste water in dry docks.

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“…Organotin degradation involves sequential removal of organic groups from the tin atom, a process generally resulting in a decrease in toxicity (Blunden & Chapman, 1986). Degradation of tributyltin oxide and tributyltin naphthenate, used as wood preservatives, can be achieved by fungal action, breakdown products including mono-and di-butyltins (Barug, 1981;Orsler & Holland, 1982). Organomercurials may be detoxified by organomercury lyase, the resulting Hg^^ being then reduced to Hg" by mercuric reductase (Tezuka & Takasaki, 1988), a similar mechanism to that found in bacteria (see Gadd, 19926).…”

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confidence: 99%

Interactions of fungi with toxic metals

1993

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SUMMARY This review details the major interactions of fungi with toxic metal species. Physico‐chemical and biological aspects are discussed including definitions and classification of metals in biological contexts, mechanisms of metal fungitoxicity, resistance and tolerance, environmental influences and the occurrence of fungi in metal‐polluted habitats. Cellular interactions include extracellular precipitation and complexation, binding to cell walls, transport of monovalent and divalent metal cations, intracellular fates of toxic metal species (including metal‐binding proteins and peptides, and vacuolar compartmentation), and metal transformations including organometal(loid) synthesis. Significant interactions between metals and mycorrhizal fungi and macrofungi are summarized with reference to the amelioration of plant phytotoxicity and metal accumulation respectively. Biotechnological aspects of metal‐fungal interactions relate to the biological treatment of metal‐contaminated effluents and waste streams for metal removal/recovery and environmental protection.

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Microbial degradation of bis(tributyltin) oxide

Cited by 93 publications

References 5 publications

Degradation of Triphenyltin by a Fluorescent Pseudomonad

Degradation of Triphenyltin by a Fluorescent Pseudomonad

Biochemistry of TBT-Degrading Marine Pseudomonads Isolated from Indian Coastal Waters

Interactions of fungi with toxic metals

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