Degradation of phthalate and di-(2-ethylhexyl)phthalate by indigenous and inoculated microorganisms in sludge-amended soil

Article Abstract:

A study was conducted to analyze the microbial degradation of di(2-ethylhexyl)phthalate (DEHP) and the degradation intermediate phthalic acid found in agricultural soil supporting sewage sludge. 14C-labelled substrates and various isotope methods were utilized to determine the transformation of DEHP and phthalic acid. Results indicated that DEHP and phthalic acid can be changed to different intermediates at a rate that may surpass mineralization rates. Findings also showed the the bioavailability of substrates correlated with the enzymatic degradation of hydrophobic organic pollutants.

Phthalate esters, Phthalate plasticizers, Soil research, Sewage sludge

---

Oxidation and assimilation of atmospheric methane by soil methane oxidizers

Article Abstract:

Methane assimilation/oxidation by forest soil microorganisms and endogenous carbon turnover was measured by radiotracer techniques during changes in temperature, methane/ammonia concentration and soil structure. The capacity of bacterial growth on atmospheric methane does not occur in a microbial consortium. Furthermore, soil methane metabolism by methane- and ammonia-oxidizing bacteria was affected by atmospheric methane concentration which is used as a true source of cell carbon by soil bacteria.

Physiological aspects, Microbial metabolism, Microbiological synthesis, Soil microbiology, Methanobacteriaceae, Methanogens

---

Radioactive fingerprinting of microorganisms that oxidize atmospheric methane in different soils

Article Abstract:

Research was conducted to examine the radioactive fingerprinting of microorganisms that oxidize atmospheric methane in different soils. The methane metabolism and the diversity of the organisms that oxidized atmospheric methane in soil samples from Arctic, temperate and tropical regions were compared. An analysis of radiolabelled phospholipid ester-linked fatty acids provided a radioactive fingerprint of the active soil methanotrophs.

Methods, Usage, Genetic aspects, Methane, DNA testing, DNA identification, Microorganisms, Radioactive tracers

Similar abstracts:

• Abstracts: Initial steps in the degradation of methoxychlor by the white rot fungus Phanerochaete chrysosporium. Polycyclic aromatic hydrocarbon-degrading capabilities of Phanerochaete laevis HHB-1625 and its extracellular ligninolytic enzymes
• Abstracts: Characterization of chloroethylene dehalogenation by cell extracts of Desulfomonile tiedjei and its relationship to chlorobenzoate dehalogenation
• Abstracts: Responses of methanotrophic activity in soils and cultures to water stress. Methanol promotes atmospheric methane oxidation by methanotrophic cultures and soils
• Abstracts: Inheritance and linkage with the k2 and Mdh1-n loci in soybean. Assignment of the Fr3 locus to soybean linkage group 9
• Abstracts: Organization of repetitive elements in the upland cotton genome (Gossypium hirsutum). Genetic analysis of two terpenoid variants in cotton (Gossypium hirsutum L.)

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.