Bioreclamation of chlorophenol-contaminated soil by composting

Valo, R.; Salkinoja‐Salonen, Mirja

doi:10.1007/bf00252515

Cited by 110 publications

(49 citation statements)

References 19 publications

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“…All cultures methylating PCPPs, except Rhodococcus rhodochrous, could mineralize chlorophenols (8,10). The highest observed degree of methylation was that in one of the sawmill soil samples (pile II, Table 2), which also degraded chlorophenols (80% of the 5,500 mg kg -1 dry wt of chlorophenols were degraded in 11 months; R. Valo, unpublished).…”

Section: Discussionmentioning

confidence: 97%

“…Biodegradation of PCPP and PCPA compounds was assayed with the following pure and mixed cultures : Rhodococcus chlorophenolicus PCP-I DSM 43826, a newly described actinomycete (8) able to mineralize several chlorophenols; Rhodococcus rhodochrous DSM 43241; Pseudomonas fluorescens YMBL 00254; Pseudomonas putida ATCC 17453; Enterobacter ,aerogenes YMBL 00001; Staphylococcus aureus YMBL 00312; two mixed bacterial cultures (I and II) from sawmill soil that were able to mineralize chlorophenols. Mixed culture I was from sawmill-A soil, mostly of gravel (9), and from the chlorophenol soil of sawmill D with a high content of organic matter (10). Mixed culture II was from inorganic chlorophenol-contaminated soil of sawmill A (not described).…”

Section: Methodsmentioning

confidence: 99%

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Microbial transformation of polychlorinated phenoxy phenols.

Valo

Salkinoja‐Salonen

1986

J. Gen. Appl. Microbiol.

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Section: Discussionmentioning

confidence: 97%

Section: Methodsmentioning

confidence: 99%

Microbial transformation of polychlorinated phenoxy phenols.

Valo

Salkinoja‐Salonen

1986

J. Gen. Appl. Microbiol.

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“…Strain PCP-IT (R. chlorophenolicus) (T = type strain) was isolated from a mixed culture that originated from a chlorophenol-contaminated lake sediment sample (1). A second strain, designated CG-1, was isolated from a tetrachloroguaiacol-degrading mixed culture obtained from a bark chip biofilter inoculated with sludge from an aerated lagoon in which pulp and paper mill effluents were treated (24), and a third strain, designated CP-2, was isolated from a pentachlorophenol-degrading mixed culture obtained from chlorophenol-contaminated soil (24,47,48). Strains (36) and was solidified by adding 1.8% Difco agar.…”

Section: Methodsmentioning

confidence: 99%

Transfer of Polychlorophenol-Degrading Rhodococcus chlorophenolicus (Apajalahti et al. 1986) to the Genus Mycobacterium as Mycobacterium chlorophenolicum comb. nov.

Hägglblom

Nohynek

Palleroni

et al. 1994

International Journal of Systematic Bacteriology

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“…This could lead to a better understanding of the behavior of strain PCP-IT in environments that are more complex than liquid culture (soil, sediment, sludge, etc. ), and it could result in more efficient use of this bacterium in bioremediation processes (6,23,29,36,37).To obtain more information about the phylogenetic position of R. chlorophenolicus PCP-IT within the Actinomycetes, we cloned one of the two copies of the 16s rRNA genes and determined its nucleotide sequence. Our results revealed that there is a close relationship between strain PCP-IT and members of the genus Mycobacterium.…”

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Phylogenetic Evidence for Transfer of Pentachlorophenol-Mineralizing Rhodococcus chlorophenolicus PCP-IT to the Genus Mycobacterium

Briglia

Eggen

Elsas³

et al. 1994

International Journal of Systematic Bacteriology

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We determined the nucleotide sequence of a 16s rRNA gene of Rhodococcus chlorophenolicus PCP-IT (= DSM 43826T) (T = type strain). Sequence comparisons revealed that there was a close relationship between strain PCP-IT and strains belonging to the genus Mycobucteriurn. The sequence data were used to construct a phylogenetic tree, which showed that Mycobucteriurn chubuense is the closest relative of strain PCP-IT. We propose that strain PCP-IT should be transferred to the genus Mycobucteriurn and renamed Mycobacterium chlorophenolicum PCP-IT comb. nov.Historically, the genus Rhodococcus has encompassed a group of aerobic, nonmotile, gram-positive actinomycetes that exhibit considerable morphological diversity, contain mycolic acids, and can be acid fast (18). This genus used to be heterogeneous and included species that contain menaquinone MK-8(H2) and menaquinone MK-9(H2) with eight and nine isoprenoid units, respectively, and one hydrogenated double bond and also contain long-chain mycolic acids with 48 to 66 C atoms. In a subsequent phylogenetic study of this genus in which 16s rRNA sequence data were used, Stackebrandt et al. showed that the species containing menaquinone MK-9( H2) and long-chain mycolic acids with 63 to 69 C atoms clustered together on a phylogenetic tree on a branch that was separate from the branch that contained the other rhodococci (31). Therefore, these species (Rhodococcus bronchialis, Rhodococcus terrae, Rhodococcus rubropertinctus, and Rhodococcus sputi) appeared not to belong to the genus Rhodococcus. The transfer of these taxa to the revived genus Gordona (31) made the genus Rhodococcus more homogeneous chemotaxonomically. Most members of the genus Rhodococcus have type IV cell walls and contain menaquinone MK-8(H2) and mycolic acids with 34 to 64 C atoms. The only exception is the pentachlorophenol-mineralizing actinomycete Rhodococcus chlorophenolicus PCP-IT (T = type strain), which was isolated from lake sediment (1-3). This strain contains predominantly menaquinone MK-9(H2), which is found in strains belonging to the genera Gordona, Tsukamurella, and Mycobacterium, and mycolic acids that have 33 to 43 C atoms, which is typical of the genus Rhodococcus. R. chlorophenolicus PCP-IT has been shown to mineralize pentachlorophenol in liquid cultures, as well as in polluted soils (3, 6,23,29). Moreover, this pentachlorophenol-degrading bacterium has been found to survive longer than the other known pentachlorophenol-mineralizing microorganism, Flavobacterium sp., when it is introduced into natural soil; the reasons for this are not known (7). Determining the phylogenetic location of strain PCP-IT in more detail could provide new insights into the physiological properties of this organism. This could lead to a better understanding of the behavior of strain PCP-IT in environments that are more complex than liquid culture (soil, sediment, sludge, etc.), and it could result in more efficient use of this bacterium in bioremediation processes (6,23,29,36,37).To obtain more information about ...

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Bioreclamation of chlorophenol-contaminated soil by composting

Cited by 110 publications

References 19 publications

Microbial transformation of polychlorinated phenoxy phenols.

Microbial transformation of polychlorinated phenoxy phenols.

Transfer of Polychlorophenol-Degrading Rhodococcus chlorophenolicus (Apajalahti et al. 1986) to the Genus Mycobacterium as Mycobacterium chlorophenolicum comb. nov.

Phylogenetic Evidence for Transfer of Pentachlorophenol-Mineralizing Rhodococcus chlorophenolicus PCP-IT to the Genus Mycobacterium

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