Bacterial utilization of purified Temik

Asgari, Noshin; Sharif, Fadel A.; Özden, M. Yaşar; Alaeddinoğlu, N. Gürdal

doi:10.1016/0032-9592(95)80010-7

Cited by 7 publications

(3 citation statements)

References 20 publications

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“…In order for biodegradation of a given pesticide to occur at a high rate, the responsible microorganisms must be able to compete for nutrients even in its absence, since most pesticides are only occasionally present at detectable levels [1,5]. Since it has been demonstrated that biodegradation of simazine [7,8], mecoprop [9,10], MCPA [9,11] and aldicarb [12,13] may support microbial growth, a possible explanation for the di¡erences in degradation rate observed by Vink and van der Zee [5] is the local presence of microbial degradative activity of the pesticide. The degrading activity, however, not only depends on the presence of microbes capable of degrading the speci¢c compound but also on the expression level of the enzymatic machinery involved.…”

Section: Introductionmentioning

confidence: 99%

Competition of a parathion-hydrolyzing Flavobacterium with bacteria from ditch water in carbon-, nitrate- and phosphate-limited continuous cultures

Sprenger¹

2003

FEMS Microbiology Ecology

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The effect of competition for macroelements with bacteria from ditch water on the parathion-hydrolyzing Flavobacterium sp. ATCC 27551 (FB) was investigated within mixed continuous cultures under carbon-, nitrate-or phosphate-limited conditions. The high initial rate of parathion hydrolysis decreased rapidly in all cultures due to the loss of strain FB. Addition of 2-isopropyl-6-methyl-4-pyrimidinol (a selective source of carbon, nitrogen and energy for FB) to one nitrate-and carbon-limited chemostat caused a 20-fold increase in parathion-hydrolyzing activity compared to unamended control cultures and retention of FB. The presence of the parathion hydrolaseencoding gene could be demonstrated by a newly developed PCR detection method in all FB cultures during most of the cultivation period. These results suggest that competition effects cause the pesticide-degrading capacity of microbial communities depending on their frequency of exposure to the pesticide compounds.

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Section: Introductionmentioning

confidence: 99%

Competition of a parathion-hydrolyzing Flavobacterium with bacteria from ditch water in carbon-, nitrate- and phosphate-limited continuous cultures

Sprenger¹

2003

FEMS Microbiology Ecology

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show abstract

“…In order for biodegradation of a given pesticide to occur at a high rate, the responsible microorganisms must be able to compete for nutrients even in its absence, since most pesticides are only occasionally present at detectable levels [1,5]. Since it has been demonstrated that biodegradation of simazine [7,8], mecoprop [9,10], MCPA [9,11] and aldicarb [12,13] may support microbial growth, a possible explanation for the differences in degradation rate observed by Vink and van der Zee [5] is the local presence of microbial degradative activity of the pesticide. The degrading activity, however, not only depends on the presence of microbes capable of degrading the specific compound but also on the expression level of the enzymatic machinery involved.…”

Section: Introductionmentioning

confidence: 99%

Competition of a parathion-hydrolyzing Flavobacterium with bacteria from ditch water in carbon-, nitrate- and phosphate-limited continuous cultures

Sprenger

Dijkstra

Zwart

et al. 2003

FEMS Microbiology Ecology

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The effect of competition for macroelements with bacteria from ditch water on the parathion-hydrolyzing Flavobacterium sp. ATCC 27551 (FB) was investigated within mixed continuous cultures under carbon-, nitrate- or phosphate-limited conditions. The high initial rate of parathion hydrolysis decreased rapidly in all cultures due to the loss of strain FB. Addition of 2-isopropyl-6-methyl-4-pyrimidinol (a selective source of carbon, nitrogen and energy for FB) to one nitrate- and carbon-limited chemostat caused a 20-fold increase in parathion-hydrolyzing activity compared to unamended control cultures and retention of FB. The presence of the parathion hydrolase-encoding gene could be demonstrated by a newly developed PCR detection method in all FB cultures during most of the cultivation period. These results suggest that competition effects cause the pesticide-degrading capacity of microbial communities depending on their frequency of exposure to the pesticide compounds.

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“…Poucos estudos foram realizados para se avaliar o emprego de mecanismos biológicos no processo de remoção de aldicarbe, notadamente em condições anaeróbias. Asgari et al (1995)…”

Section: Processos Biológicosunclassified

Degradação do aldicarbe em biorreator anaeróbio horizontal de leito fixo

Damasceno¹

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Serafim pelo apoio fundamental na realização das etapas experimentais. Ao setor de Cromatografia do Laboratório de Processos Biológicos (LPB), na pessoa da Profa. Maria Ângela Talarico Adorno, pelo empenho e profissionalismo no desenvolvimento e realização das análises cromatográficas. Ao setor de Microbiologia do LPB, na pessoa da Profa. Maria Bernadete Amâncio Varesche, pelo suporte e profissionalismo nas análises microbiológicas. Aos companheiros de LPB, pelos momentos de amizade, auxílio, competência, comprometimento, descontração, discussões e profissionalismo.

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Bacterial utilization of purified Temik

Cited by 7 publications

References 20 publications

Competition of a parathion-hydrolyzing Flavobacterium with bacteria from ditch water in carbon-, nitrate- and phosphate-limited continuous cultures

Competition of a parathion-hydrolyzing Flavobacterium with bacteria from ditch water in carbon-, nitrate- and phosphate-limited continuous cultures

Competition of a parathion-hydrolyzing Flavobacterium with bacteria from ditch water in carbon-, nitrate- and phosphate-limited continuous cultures

Degradação do aldicarbe em biorreator anaeróbio horizontal de leito fixo

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