How Kentucky bluegrass tolerate stress caused by sodium chloride used for road de-icing?
| Autor: | B. Borawska-Jarmułowicz, G. Mastalerczuk, Hazem M. Kalaji |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Chlorophyll
Salinity Soil salinity Tillering Health Toxicology and Mutagenesis Kentucky 010501 environmental sciences Sodium Chloride Photosynthesis 01 natural sciences Plant Roots Salt Stress Soil NaCl Chlorophyll a fluorescence Environmental Chemistry Chlorophyll fluorescence Water content Poa 0105 earth and related environmental sciences Poa pratensis biology Lawn food and beverages Photosystem II Protein Complex Water General Medicine Salt Tolerance biology.organism_classification Pollution Plant Leaves Horticulture Germination capacity Germination Environmental science Research Article |
| Zdroj: | Environmental Science and Pollution Research International |
| ISSN: | 1614-7499 0944-1344 |
| Popis: | Salts used in road de-icing during winter season inhibit the growth and development of lawn grass species. The mechanism of plant tolerance/sensitivity to such treatments is still not clear. Moreover, there is a lack of fast and non-invasive tool to detect the effect of these salts on plants growth. This study was designed to understand the tolerance mechanism of Kentucky bluegrass plants on salinity, based on some biometric and physiological parameters. In this experiment, we simulated the urban conditions where salts are used intensively for roads de-icing. Germination capacity was evaluated at five salt solutions of NaCl (0, 50, 100, 150 and 200 mM), and physiological parameters were measured during the tillering phase at salinity levels of 0, 150 and 300 mM of NaCl. Seeds of Kentucky bluegrass did not germinate under salinity. During tillering phase, salinity affected length, area and dry mass of roots as well as the relative water content of plants, negatively. Moreover, it influenced the maximum chlorophyll fluorescence yield, quantum yield of photosystem II and electron transport rate at early period of stress. This allows us to recommend these parameters for early detection of soil salinity effects on Kentucky bluegrass plants. It seems to be that the tolerance of this plant towards salinity is based on retaining water content in leaves that allow more efficient functioning of photosynthetic apparatus. |
| Databáze: | OpenAIRE |
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