Enzyme Assays as Indicators for Biodegradation

Waarde, J.J. van der; Dijkhuis, Edwin J.; Henssen, Maurice J. C.; Keuning, Sytze

doi:10.1007/978-94-011-0421-0_156

Cited by 8 publications

(2 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, the increased of laccase activity can be explained for the substance conversions and mineralization of the substrates. Similar results were observed by Waarde et al [45] and Margesin and Schinner [46,47]. Also the previous authors noted that there is an increase of laccase activity and they explained this decrease of biological activities as the lack of growth factors, accumulation of inhibiting metabolites and of recalcitrant long-chain alkanes, high-branched aromatics and condensates [46].…”

Section: Resultssupporting

confidence: 84%

Bioremediation of Anthracene, Phenanthrene and Phenol by Cunninghamella echinulata

El-Morsy

Hafez

Mohesien

et al. 2012

Scientific Journal for Damietta Faculty of Science

View full text Add to dashboard Cite

Oil-polluted areas contain large amounts of poly-aromatic hydrocarbons (PAHs) which represent severe hazards on the ambient environment. Fungal strains were isolated from different contaminated sites in the Mediterranean coast and middle Delta, Egypt and screened for PAHs degradation. Hydrocarbon-enriched media was used to isolate the anthracene-, phenanthrene-and phenol-degrading fungi. Thirteen fungal isolates showed high degradation activities for anthracene, phenanthrene and phenol. One isolate was selected possessing high degradation ability and incubation period and was identified based on 18S rDNA sequence. Partial sequence of 18S rDNA revealed that this isolate is identified as Cunninghamella echinulata. Laccase enzyme produced by this fungus was subsequently evaluated for its degradative ability towards PAHs mixtures. The percentage of degradation varied from 96.035% to 99.986% of the tested PAHs. After an incubation period of 45 days, 5% of PAHs gave the highest degradation activity among all concentrations used. The kinetics of PAHs degradation is presented along with the feasibility of using Cunninghamella echinulata for bioremediation

show abstract

Section: Resultssupporting

confidence: 84%

Bioremediation of Anthracene, Phenanthrene and Phenol by Cunninghamella echinulata

El-Morsy

Hafez

Mohesien

et al. 2012

Scientific Journal for Damietta Faculty of Science

View full text Add to dashboard Cite

show abstract

“…Soil respiration is a relevant parameter to know the microbial degradation as well as the determination of dehydrogenase activity, among other techniques (Waarde et al, 1995). In this sense, soil respiration was proportional todiesel-contaminated soil, and was higher in soil with than without seedlings of Q. oleoides.…”

Section: Discussionmentioning

confidence: 99%

Physiological responses of Quercus oleoides (Schltdl & Cham) to soils contaminated by diesel

Castro-Mancilla

Rosa‐Manzano

Castro-Nava

et al. 2019

Plant Production Science

View full text Add to dashboard Cite

Oil pollution is a worldwide threat to the environment that affects the development of plants. The effect of soil contaminated by diesel on the physiological responses of seedlings of Quercus oleoides was investigated in two independent experiments. We proposed that physiological performance will decrease when seedlings are exposed to higher concentration of contamination. At the first experiment, levels of pollution with diesel were of 0%, 5%, 10% and 15%, and 0%, 2% and 3.5% in the second one. In the first experiment, photosynthetic rate, stomatal conductance, transpiration and total chlorophyll of Q. oleoides were higher in the control seedling, and lower in treatments of pollution with 5%, 10% and 15% of diesel during 3 days of treatment. Only, seedlings in soil polluted with 5% of diesel survived up to 16 days; they showed a photosynthetic rate of 5 μmol m −2 s −1 , which was lower than control seedlings (9 μmol m −2 s −1). This pattern was observed in stomatal conductance, transpiration and relative water content. Surprisingly, in the second experiment, seedlings showed a higher photosynthetic rate and growth at 2% of diesel-contaminated soil than control seedlings, a phenomenon known as hormesis. In both experiments, soil respiration was proportional to soils contaminated. We concluded that Q. oleoides is highly vulnerable in soils contaminated with above 5% of diesel, but it maintains its physiological activities in soils contaminated below 2%, suggesting that seedlings can grow under low concentration of diesel contaminant, and may be used in phytoremediation of soils with low concentrations of diesel contamination.

show abstract

Catabolic enzyme activities during biodegradation of three-ring PAHs by novel DTU-1Y and DTU-7P strains isolated from petroleum-contaminated soil

2021

View full text Add to dashboard Cite

Enzyme Assays as Indicators for Biodegradation

Cited by 8 publications

References 1 publication

Bioremediation of Anthracene, Phenanthrene and Phenol by Cunninghamella echinulata

Bioremediation of Anthracene, Phenanthrene and Phenol by Cunninghamella echinulata

Physiological responses of Quercus oleoides (Schltdl & Cham) to soils contaminated by diesel

Catabolic enzyme activities during biodegradation of three-ring PAHs by novel DTU-1Y and DTU-7P strains isolated from petroleum-contaminated soil

Contact Info

Product

Resources

About