Biodegradation of pentachlorophenol by micromycetes. II. Ascomycetes, basidiomycetes, and yeasts

Steiman, R.; Benoit‐Guyod, Jean‐Louis; Seigle‐Murandi, F.; Sage, Lucile; Toé, Adama Makoum

doi:10.1002/tox.2530090102

Cited by 14 publications

(11 citation statements)

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“…In our laboratory, we have explored systematically the biodegradation capacity of the different taxonomic groups of our collection of 1059 micromycetes by cultivating them with glucose (5 g L-') and PCP (100 mg L-I). The first work was done with Zygomycetes (Seigle-Murandi et al, 1992); then we examined Ascomycetes, Basidiomycetes, and Yeasts (Steiman et al, 1993). This last report concerns Deuteromycetes.…”

Section: Ntro D U Cti 0 Nmentioning

confidence: 99%

“…Strains were cultivated in Galzy and Slonimski liquid synthetic medium (GS) (Galzy and Slonimski, 1957) with PCP (final concentration in the medium 100 mg L-'), as previously described (Steiman et al, 1993). Each series of experiments was made in triplicate or 44 76 5 33 64 74 11 29 31 37 40 56 59 72 73 60 72 77 80 0 50 54 64 50 37 65 72 73 32 17 28 33 42 45 61 66 67 68 70 77 0 0 0 4 17 18…”

Section: Culture Conditionsmentioning

confidence: 99%

“…After extraction with ethyl acetate, PCP consumption was evaluated by HPLC analysis under the conditions previously described (Steiman et al, 1993).…”

Section: Evaluation Of Pcp Consumptionmentioning

confidence: 99%

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Biodegradation of pentachlorophenol by micromycetes. III. Deuteromycetes

Benoit‐Guyod

Seigle‐Murandi

Steiman

et al. 1994

Environ. Toxicol. Water Qual.

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A third study on the biodegradation of pentachlorophenol (PCP) (100 mg L-') by micromycetes was done with 784 strains of Deuteromycetes cultivated in liquid synthetic medium. The disappearance of PCP after 5 days of cultivation was compared with POX production. Mean PCP depletion was 56"h for Agonomycetales, 60% for Coelomycetes, 51% for Dematiaceae, 52% for Mucedinaceae (other than Aspergillus and Penicilliurn), 56 and 57%, respectively, for Aspergillus and Penicilliurn, and 42% for Tuberculariales. Although some genera gave homogeneous results (Ascochyta, Aspergil-/us, Coniothyriurn, Penicilliurn), a great variability was observed as well in PCP depletion as in POX production, reflecting the heterogeneity of this artificial taxonomic group. With a few exceptions, correlation between POX production and PCP disappearance was low or nonexistent. Another factor, probably not enzymatic, could be involved.

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Section: Ntro D U Cti 0 Nmentioning

confidence: 99%

Section: Culture Conditionsmentioning

confidence: 99%

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Biodegradation of pentachlorophenol by micromycetes. III. Deuteromycetes

Benoit‐Guyod

Seigle‐Murandi

Steiman

et al. 1994

Environ. Toxicol. Water Qual.

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“…Among them, Mucedinaceae alone constituted half of the total (31/61 strains) with a large predominance of the genus Penicillium (22 strains). We have recently noted the high resistance of some taxonomic groups Steiman et al, 1992cSteiman et al, , 1992dOnochie-Okeke et al, 1992) and hypothesized that enzymatic systems might play a role in their resistance to PCP . Ascomycetes (9 strains) and Dematiaceae (10 strains) were two other important groups.…”

Section: Resultsmentioning

confidence: 95%

Toxicity of pentachlorophenol for micromycetes isolated from freshwater sediments

Sage¹,

Steiman²,

Seigle‐Murandi³

et al. 1993

Journal of Aquatic Ecosystem Health

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In order to evaluate the impact of xenobiotics on fungal communities of sediments, lentic ecosystems have been reconstituted in the laboratory and examined before as well as after contamination.Microcosms (2 litres) have been treated with three different concentrations of pentachlorophenol (PCP) (3, 100, and 1000 mg 1-1) at 22 degC. The fungal strains present in the sediments were first isolated and identified before contamination with PCR Most of the strains belonged to Deuteromycetes (mainly Mucedinace~e and Dematiace~e) with a predominance of the genus Penicillium, and Ascomycetes were found in exceptional abundance. New isolations and identifications were made on days 1, 2, 4, 8, and 15 after contamination with PCP. The sensitivity of the various species were determined as a function of the level of PCP and the duration of contamination. Ascomycetes was particularly resistant to high concentrations of PCP. The toxicity of the xenobiotic towards strains belonging to various taxonomic groups is discussed, as well as the possibility that some of them may be useful for biodegradation and/or bioremediation processes, or as bioindicators of polluted sites.

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“…In relation to fungal populations, studies have revealed that diverse members of Ascomycetes (Rhodococcus and Paecilomyces) and Basidiomycetes (Phanaerochaete, Trametes and Bjerkandera) are high producers of phenoloxidases and efficient degraders of chlorophenols [1,30]. In addition, Rhizopus oryzae was identified as one of the more dominant fungi present in WSAD 250 , which was more dominant than A. discolor, and has also been previously reported as a zygomycete capable of tolerating and removing efficiently PCP from contaminated soil [31].…”

Section: Discussionmentioning

confidence: 94%