Morphophysiological Properties of Sulfate-Reducing Baсteria Isolated From the System of Lviv Wastewater Treatment

Verkholiak, N. S.; Перетятко, Т. Б.

doi:10.18524/2307-4663.2018.4(44).139440

Cited by 2 publications

(3 citation statements)

References 5 publications

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“…Growth of sulfate-reducing bacteria D. desulfuricans Ya-11 was completely inhibited in the presence of 6 mM sulfide in the medium. Addition of sulfide ion in the concentrations of 6.3 and 9.4 mM to the medium of cultivation of bacteria being in the logarithmic phase of growth led to complete termination of the culture growth (Verkholiak & Peretyatko, 2018). The most resistant among microorganisms to action of hydrogen sulfide are the archaea Methanocaldococcus jannaschii and Archaeoglobus profundus, which grow well at the optimum temperature of growth (82 °C) at high enough concentrations of hydrogen sulfide -80 and 60 mM, accordingly (Lloyd et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…For evaluation of the efficiency of hydrogen sulfide production, the calculation of C/S ratio (mg of oxidized organic carbon to mg of sulfide formed) was made for sulfur-reducing bacteria Desulfuromonas sp. YSDS-3 and sulfate-reducing bacteria taken from the literature data (Dorosh et al, 2015;Qiuet et al, 2017;Verkholiak & Peretyatko, 2018;Verkholiak & Peretyatko, 2019). Low C/S ratio indicates the lower energy consumption for electron transfer from donor to elemental sulfur and formation of hydrogen sulfide (Table 1).…”

Section: Discussionmentioning

confidence: 99%

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Ovocidal action of glutaraldehyde and benzalkonium chloride mixture on Aonchotheca bovis (Nematoda, Capillariidae) embryogenesis

Мельничук

Yuskiv

Pishchalenko

2020

Regul. Mech. Biosyst.

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Deinvasion, aimed at elimination of environmental exogenic stages of invasion agents and avoidance of their invasion to host organism, occupies an important place in the complex of sanitary and prophylactic activities against animal helminthosis diseases. Application of glutaraldehyde and benzalkonium chloride at vital activity and embryogenesis of Aonchotheca bovis (Schnyder, 1906) obtained from nematode female gonads was investigated with different concentration and exposures. Two test-cultures were used in the experiment. The first culture contained non-invasive eggs of A. bovis, the second contained invasive ones, obtained by the laboratory culturing of gonadic eggs until mobile larva maturing. It was established that glutaraldehyde and benzalkonium chloride mixture has a deinvasive capacity against A. bovis eggs, parasitizing on sheep. Ovocidal efficiency indexes appeared higher with use of the test culture against the non-invasive capillaria eggs’ test-culture. So, the high level of ovocidal efficiency of glutaraldehyde and benzalkonium chloride mixture against non-invasive A. bovis eggs culture was established at the concentration of 0.5% and exposure of 10–60 min (93.6–100.0%), and against the invasive A. bovis egg culture – at the concentration of 0.5% and exposure of 30 and 60 min (90.3–94.6%) and 1.0% at all exposures (100.0%). Ovocidal activity of the examined mixture was accompanied by specific morphological changes of nematode eggs structure. Destruction of the egg envelope, embryo loosening and decay and its dissolution were observed. Such changes are proved by metric indexes of width and length of capillaria eggs, envelope thickness and cap length, indicating the violation of embryogenesis of A. bovis. Thus, glutaraldehyde and benzalkonium chloride mixture of 1.0% concentration is a promising deinvasive agent suitable for effective fight against and prophylaxis of sheep-breeding nematodosis.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Ovocidal action of glutaraldehyde and benzalkonium chloride mixture on Aonchotheca bovis (Nematoda, Capillariidae) embryogenesis

Мельничук

Yuskiv

Pishchalenko

2020

Regul. Mech. Biosyst.

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“…Object of research -sulfate-reducing bacteria Desulfovibrio desulfuricans Ya-11, isolated from Yavoriv Lake (Peretyatko et al, 2006) and Desulfotomaculum AR1, isolated from Lviv wastewater purification system (Verkholiak & Peretyatko, 2018). Bacteria were grown in Postgate C medium with the following content (g/L): potassium dihydrophosphate -0.5; ammonium chloride -1.0; sodium sulfate -4.5; calcium chloride hexahydrate -0.06; magnesium sulfate heptahydrate -0.06; sodium lactate -6; yeast extract -1; ferrous sulfate heptahydrate -0.004; sodium citrate dihydrate -0.3; pH 7.6 (Postgate, 1984), modified Postgate C medium (without sulfate ions) and modified Postgate C medium without sodium lactate with 2.6 g/L of toluene.…”

Section: Methodsmentioning

confidence: 99%

The influence of carbon-containing greenhouse gases on the dynamics of radial increment of Pinus cembra and Picea abies in the conditions of the Gorgany Nature Reserve

Moroz

Kuz

Руда

2020

Regul. Mech. Biosyst.

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Based on the tree-ring chronology, we studied the radial increment of Swiss stone pine (Pinus cembra L.) and common spruce, or Norway spruce (Picea abies L.) as indicators of dendrochronological studies and, based on tree-ring chronology, reconstructed the annual changes of stem biomass and the amount of carbon accumulated in it by P. cembra and P. abies in the Gorgany Nature Reserve. Swiss stone pine stands are of great zoological importance as biotopes of nutcracker (Nucifraga caryocatactes L.), crossbill (Loxia curvirostra L.), capercaillie (Tetrao urogallus L.) and other representatives of rare boreal fauna. Samples were taken from trees of the Playa forest district of the Brusturyan Forest Hunting Range State Enterprise of the Transcarpathian Regional Forestry Administration (P. cembra and P. abies) from trees that did not have visual signs of damage in the Gorgany Nature Reserve. By cross-dating the radial increments of two radii for each tree, individual chronological series were drawn up. Carbon sequestration in P. cembra and P. abies stem wood was evaluated on the basis of dendrochronological analysis of radial increment. The accuracy of cross-dating of dendrochronological series of individual trees, individual chronological series, and representativeness of the generalized series were verified by conventional methods. It was found that the average annual radial increment of the trees under study is 11.48 mm in P. cembra and 14.39 in P. abies, and varies in the range of 1.86–5.49 mm. The data obtained indicate an increase in the ability of P. cembra and P. abies to accumulate carbon with increasing age. The study of carbon sequestration in the stem wood of P. cembra and P. abies, based on dendrochronological analysis, made it possible to reconstruct the annual variation in stem biomass increment and accumulated carbon. The analysis of interdependence of the radial increment of P. cembra and P. abies in the Gorgany Nature Reserve and the value of carbon-containing greenhouse gases in the atmosphere, carried out by the augmented data sample, made it possible to specify the periods most significant for the formation of annual rings. The reaction in radial increment is most pronounced from June to September, with the annual values of carbon-containing greenhouse gases being maximally reflected in radial increment for the period from October to April.

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Morphophysiological Properties of Sulfate-Reducing Baсteria Isolated From the System of Lviv Wastewater Treatment

Cited by 2 publications

References 5 publications

Ovocidal action of glutaraldehyde and benzalkonium chloride mixture on Aonchotheca bovis (Nematoda, Capillariidae) embryogenesis

Ovocidal action of glutaraldehyde and benzalkonium chloride mixture on Aonchotheca bovis (Nematoda, Capillariidae) embryogenesis

The influence of carbon-containing greenhouse gases on the dynamics of radial increment of Pinus cembra and Picea abies in the conditions of the Gorgany Nature Reserve

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