Biodehalogenation. The metabolism of chloropicrin by Pseudomonas sp

Castro, C. E.; Wade, Ruth S.; Belser, N. O.

doi:10.1021/jf00120a011

Cited by 57 publications

(45 citation statements)

References 4 publications

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“…that could use 1,3‐D as their sole carbon and energy source (Lebbink et al, 1989). Similarly, four species of soil Pseudomonas were also found to have the ability to rapidly degrade CP (Castro et al, 1983), which indicated that CP and 1,3‐D could be degraded or cometabolized by analogous microorganisms. These published reports support the possibility that the enhancement in the rate of CP degradation at early times we observed (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…1, Table 1), these results suggest that the accumulation of CP degradation products might have influenced trans ‐1,3‐D degradation. Castro et al (1983) reported the major path of metabolism for CP as sequential dechlorination to dichloronitromethane, chloronitromethane, and nitromethane. The disappearance of CP was accompanied by an increase in concentration in dichloronitromethane, which then fell off slowly with increasing incubation time.…”

Section: Resultsmentioning

confidence: 99%

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Competitive Degradation between the Fumigants Chloropicrin and 1,3‐Dichloropropene in Unamended and Amended Soils

et al. 2003

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Competitive Degradation between the Fumigants Chloropicrin and 1,3‐Dichloropropene in Unamended and Amended Soils

et al. 2003

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“…The edaphon that degrade CP are composed of pseudomonades that rely on dehalogenation to generate nitromethane. The processes are as follows: Cl 3 CNO 2 → Cl 2 CHNO 2 → ClCH 2 NO 2 → CH 3 NO 2 [27], and the end products are CO 2 , NO 3, and Cl −1 . Biochar produced under a high pyrolytic temperature has numerous surface micropores and larger interior channels, which are suitable for microorganism colonization and biodegradation [28,29].…”

Section: The Effects Of Different Biochar Types and Rates On Cp Degramentioning

confidence: 99%

Effects of Biochar Amendment on Chloropicrin Adsorption and Degradation in Soil

Liu¹,

Wang

Yan

et al. 2016

Energies

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Abstract:The characteristics of biochar vary with pyrolysis temperature. Chloropicrin (CP) is an effective fumigant for controlling soil-borne pests. This study investigated the characteristics of biochars prepared at 300, 500, and 700 • C by michelia alba (Magnolia denudata) wood and evaluated their capacity to adsorb CP. The study also determined the potential influence of biochar, which was added to sterilized and unsterilized soils at rates of 0%, 1%, 5%, and 100%, on CP degradation. The specific surface area, pore volume, and micropores increased considerably with an increase in the pyrolytic temperature. The adsorption rate of biochar for CP increased with increasing pyrolytic temperature. The maximum adsorption amounts of CP were similar for the three biochars. Next, the study examined the degradation ability of the biochar for CP. The degradation rate constant (k) of CP increased when biochar was added to the soil, and k increased with increased amendment rate and pyrolysis temperature. The results indicate that biochar can accelerate CP degradation in soil. The findings will be instructive in using biochar as a new fertilizer in fumigating soil with CP.

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“…Some Pseudomonas species have been shown to successively dechlorinate CP (CHCl 3 NO 2 ) (Castro et al, 1983) and other chlorinated fumigants (van der Waarde et al, 1993;Poelarends et al, 1998). This is particularly important due to the prevalence of Pseudomonas in soils.…”

Section: Introductionmentioning

confidence: 99%

Stimulation of nitrous oxide production resulted from soil fumigation with chloropicrin

Spokas

Wang

2003

Atmospheric Environment

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Agricultural soils are a major source of the atmospheric greenhouse gas nitrous oxide (N 2 O). Agronomic practices such as tillage and fertilizer applications can significantly affect the production and consumption of N 2 O because of alteration in soil physical, chemical, and biochemical activities. Soil fumigation is an agronomic practice used to control soil-borne disease pathogens, weeds, plant-parasitic nematodes, and fungi. The strong impact of fumigants on soil microorganisms can indirectly affect the production and/or consumption of N 2 O and would potentially alter net emissions from agricultural soils. Laboratory incubation and field soil fumigation studies were conducted to determine the potential impact of soil fumigation on the dynamics of N 2 O production. Laboratory soil incubations showed an eight-fold increase in the production rate of N 2 O as a consequence of chloropicrin (CP) fumigation. This stimulation effect was confirmed by a seven-fold increase in N 2 O emission rates in field plots following CP fumigation. The mechanism of N 2 O production appeared to be microbial related; however, additional work is needed to fully elucidate the pathways. r

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Biodehalogenation. The metabolism of chloropicrin by Pseudomonas sp

Cited by 57 publications

References 4 publications

Competitive Degradation between the Fumigants Chloropicrin and 1,3‐Dichloropropene in Unamended and Amended Soils

Competitive Degradation between the Fumigants Chloropicrin and 1,3‐Dichloropropene in Unamended and Amended Soils

Effects of Biochar Amendment on Chloropicrin Adsorption and Degradation in Soil

Stimulation of nitrous oxide production resulted from soil fumigation with chloropicrin

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