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Wpływ bakterii ryzosferowych na zmianę liczebności drobnoustrojów w rędzinie wapiennej świeżo skażonej mieszaniną wielopierścieniowych węglowodorów aromatycznych z olejem napędowym

Identyfikatory
Warianty tytułu
EN
Effect of rhizosphere bacteria on number of microorganisms in rendzina freshly polluted with mixture of polycyclic aromatic hydrocarbons (PAH'S) and diesel fuel (DF)
Języki publikacji
PL
Abstrakty
PL
Przedstawiono badania wpływu ochronnego szczepów Azospirillum spp. i Pseudomonas stutzeri na liczebność mikrobiologiczną w rędzinie wapiennej świeżo skażonej mieszaniną WWA i ON. Po zastosowaniu szczepienia roślin stwierdzono statystycznie istotny wzrost liczby drobnoustrojów glebowych (ogólnej liczby bakterii, promieniowców, bakterii amonifikacyjnych, proteolitycznych, celulolitycznych, rozkładających fosforany oraz kopiotrofów i oligotrofów) oraz statystycznie znaczny spadek ogólnej liczby grzybów. Stwierdzono ponadto stymulujący wpływ oleju napędowego w dawkach O,1 i 1 % na wzrost liczby wymienionych drobnoustrojów.
EN
Rhizodegradation is the breakdown of organic contaminants in soil by soil dwelling microbes which is enhanced by the rhizospheres presence. The soil used in the experiment was collected from 0-30 cm layer in the uncontaminated area of agricultural use (Mięćmierz, Kazimierz Dolny, Poland). Pot experiment was conducted to evaluate the number of microorganisms in rendzina freshly contaminated with PAH's, diesel fuel and mixtures of PAH's and diesel fuel using inoculation of meadow feascue with rhizospheric bacteria Azospirillum spp. and Pseudomonas stutzeri. The strains of Azospirillum spp. and Pseudomonas stutzeri were able to nitrogen fix and degrade PAH's as the only source of carbon and energy. Experiment was carried out as a chamber pot study. Plants had been cultivated for 30 days and then harvested. The total number of various bacteria (ammonifiying, proteolitic, able to degrade phosphorus, copiotrophic, oligotrophic), actinomycetes and fungi in soil before and after vegetation period of investigated soil were the basis for the determination of the effectiveness of the inoculation of plants with Azospirillum spp. and Pseudomonas stutzeri. This research has confirmed higher total number of microorganisms after increase on total number of fungi in rendzina after inoculation of plants with all doses of P AH' s: total number of bacteria, actinomycetes and lower number of fungi. Statistically important decrease of total number of different bacteria and actinomycetes and statistically important increase on total number of fungi in rendzina after grown of meadow feascus inoculated with Azospirillum spp. and Pseudomonas stutzeri were observed together with increase of pollution doses. Number of different bacteria and actinomycetes were statistically higher in soils polluted with diesel fuel at the doses 0, I and 1 %. The differences in concentration between the inoculated or non-inoculated soils indicate that the presence of plant roots, in addition to the period of time, contributes to grown and adaptation of Azospirillum spp. and Pseudomonas stutzeri to a soil freshly polluted with P AH' s and diesel fuel.
Twórcy
autor
autor
  • Instytut Uprawy, Nawożenia i Gleboznawstwa, Puławy
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BTB2-0058-0071
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