Wydanie 316(33)1 2015
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Przeglądaj Wydanie 316(33)1 2015 wg Autor "Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, Poland"
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Pozycja Open Access Effects of Cadmium and Salinity-Sodicity on Acid and Alkaline Phosphatase Activity with Reference to Ecological Importance of Soil Pollution(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Telesiński, Arkadiusz; Stręk, Michał; Śnioszek, Martyna; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, PolandThe aim of the study was to determine the changes of the acid and alkaline phosphatase activity in the soil caused by the presence of cadmium and NaCl. The experiment was carried out in the laboratory condition, on soil samples taken from the arable-humus horizon of Gumieniecka Plain black earths. Granulometric composition of this soil was sandy loam. The organic carbon content was 1.09%, total nitrogen content was 0.14% and pH in 1 M KCl 6.81. Various concentrations of Cd(NO3)2 and NaCl were introduced to soil samples. The amount of cadmium added to the soil was 0, 1, 5 and 25 mg Cd2+ · kg–1 , and the amount of NaCl was 0 and 0.5% of soil weight. On day 1, 7, 14, 28 , 56 and 112 alkaline and acid phosphatase activity was determined spectrophotometrically. The obtained results are converted with respect to the enzyme activity in the soil controls (assuming it to be 100%) and given as percent of inhibition. The results were shown as environmental danger zones graphs. The activity of acid and alkaline phosphatase changed significantly after addition of cadmium and sodium chloride to the soil. Both, cadmium and salinity of the soil, caused inhibition of phosphatase activity, which increased with enhancing concentration of metals in the soil. Sodium chloride intensified the negative effect of cadmium on phosphatase activity in the soil. Observed inactivation of phosphatases caused by 25 mg Cd2+ · kg–1 of Cd ranged, on the graphs of ecological danger zones, in the area of critical values, which may indicate that cadmium disturbs the metabolism of phosphorus compounds in soil.Pozycja Open Access The First Molecular Characterisation of Steinernema Silvaticum Recorded in Poland and its Differentiation from Steinernema Kraussei Using Ribosomal DNA (rDNA) Sequences(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Dzięgielewska, Magdalena; Berdzik, Marcin; Myśków, Beata; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, Poland; Department of Genetics, Plant Breeding and Biotechnology, West Pomeranian University of Technology, Szczecin, Poland; Department of Genetics, Plant Breeding and Biotechnology, West Pomeranian University of Technology, Szczecin, PolandDuring faunistic studies conducted in north-western Poland on the entomopathogenic nematodes (EPN) of the families Steinernematidae and Heterorhabditidae, species Steinernema silvaticum was identified for the first time in Poland. Nematode species identification, using morphometric methods, is laborious, even for an experienced researcher. S. silvaticum and S. kraussei are defined as “sister taxa” and it is difficult to distinguish these two species. The study is an attempt to differentiate S. silvaticum from S. kraussei using sequencing results of the rDNA – ITS1 and LSU regions. Sequenced regions of ITS1 and LSU had lengths of 490bp and 918bp, respectively. A very high similarity between the S. silvaticum isolate and the isolate of S. kraussei was detected in the case of both sequences (98–99%). There were only two nucleotide differences in ITS1 and two in LSU region, which discriminate the two analysed species.Pozycja Open Access Plant Communities on the Flat Ridge of the “Piotrawin” Quarry Located in the Vicinity of Vistula Near Józefów on the Vistula in Opole Lubelskie County(Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2015) Kutyna, Ignacy; Malinowska, Katarzyna; Department of Environmental Protection and Development, West Pomeranian University of Technology, Szczecin, Poland; Department of Plant Physiology and Biochemistry, West Pomeranian University of Technology, Szczecin, PolandIn 1998, three years after technical and biological reclamation, 29 relevés were made in the ridge area (the crown of the excavation) of the quarry “Piotrawin”. Two segetal associations were distinguished (Sileno inflatae-Linarietum minoris and Lathyro-Melandrietum noctiflori) as well as one xerothermic grassland association (Inuletum ensifoliae). The communities are floristically very rich. The number of taxa in the individual associations is varied and it ranges from 120 (Lathyro-Melandrietum noctiflori) to 147 (Sileno inflatae-Linarietum minoris). The average number of taxa in a relevé of individual communities is very high and it ranges from 60 to 62. The dominant syntaxon in these communities is Stellarietea mediae, the number of taxa ranges from 26 to 39. Moreover, the communities are characterised by a numerous participation of ruderal communities species (Artemisietea vulgaris), xerothermic grasslands (Festuco-Brometea) and seminatural grasslands (Molinio-Arrhenatheretea). The aforementioned communities have close mutual floristic similarities determined on the basis of the degree of phytosociological stability. High mutual similarity, at the level of 76.8%, is demonstrated by segetal communities. Smaller mutual similarity (72.1%) occurs between Sileno inflatae-Linarietum minoris and Inuletum ensifoliae. After three years, the segetal communities were still dominant in the researched ridge area of the quarry, but during a reconnaissance performed in 2013 a significant floristic transformation of the community was noted, which tends to the infestation of the area with xerothermic grasslands communities species and scrubs of Rhamno-Prunetea class.