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Nitrate reductase activity (NRA) in the invasive alien Fallopia japonica: seasonal variation, differences among habitats types, and comparison with native species

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Chmura D., Krywult M., Kozak J. L.

Acta Societatis Botanicorum Poloniae

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2016

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tom 85

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nr 3

Nitrate reductase activity (NRA) was studied in the invasive alien plant F. japonica (Japanese knotweed) during the vegetation season and among natural, semi-natural, and human-made habitats and compared with NRA in selected native species. NRA was measured directly in the field from the beginning of May until the beginning of October. NRA was much higher than in the plant’s native range, i.e., East Asia, and showed a high degree of variation over time with the highest values being reached at the stage of fast vegetative growth and at the beginning of fruiting. NRA was highest on dumping sites probably due to the high nitrogen input into soils and near traffic and the emission of NOx by vehicles. A comparison of the enzyme activity in four selected native plant species indicated that NRA in F. japonica was the highest with the exception of Urtica dioica, which exhibited a similar activity of the enzyme. A detailed comparison with this species showed that differences between these species on particular dates were influenced by differences in the phenology of both plants. The initial results that were obtained suggest that nitrogen pollution in an environment can contribute to habitat invasibility and a high level of NRA, which in addition to the many plant traits that are commonly accepted as characteristic of invasiveness features, may be an important factor that enhances invasion success.

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Przestrzenny rozklad stezen zanieczyszczen powietrza dla Szczawnicy i okolicy

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Milczynski J., Zawora T., Kozak J. L.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

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1995

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tom 45

391-396

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Average winter gas pollution of air in the area of the Pieniny National Park in 1996-1999

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Miczynski J., Kozak J. L., Jurkiewicz T.

Zeszyty Naukowe Akademii Rolniczej w Krakowie. Inżynieria Środowiska

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2001

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tom 21

The results of four year investigations on winter gas pollution of air in the region of the Pieniny National Park were presented in the work. Concentrations of S02 and N02 were measured using passive method. The results showing high differentiations of measured pollutants were presented as the spatial distributions. The highest pollution was stated in the places located in mountain basins.

Ograniczanie wyników

1 Acta Societatis Botanicorum Poloniae

1 Zeszyty Naukowe Akademii Rolniczej w Krakowie. Inżynieria Środowiska

1 Zeszyty Naukowe Akademii Rolniczej w Krakowie. Sesja Naukowa

3 Kozak J. L.

1 Chmura D.

1 Jurkiewicz T.

1 Krywult M.

1 Miczynski J.

1 Milczynski J.

1 Zawora T.

1 2016

1 2001

1 1995

Nitrate reductase activity (NRA) in the invasive alien Fallopia japonica: seasonal variation, differences among habitats types, and comparison with native species

Przestrzenny rozklad stezen zanieczyszczen powietrza dla Szczawnicy i okolicy

Average winter gas pollution of air in the area of the Pieniny National Park in 1996-1999