Photosynthetic efficiency and leaf morphology of (Pinus nigra Arn.) under variable urban pollution conditions
2013
Аутори:
Pavlović, DraganaMatić, Marija
Živković, Suzana
Brkljačić, Jelena
Jarić, Snežana
Kostić, Olga
Gajić, Gordana
Mitrović, Miroslava
Pavlović, Pavle
Остала ауторства
Vinterhalter, DraganТип документа:
Конференцијски прилог (Објављена верзија)
,
© 2013 by the Serbian Plant Physiology Society
Метаподаци
Приказ свих података о документуАпстракт:
To date an unprecedented, rapid change in urban environment is observed, which is likely to exceed the adaptive potential of plants, especially that of tree species with their long reproductive cycles. Changes in chlorophyll fluorescence parameters is considered as an reliable approach for evaluating the state of plant vitality and provides a rapid and accurate technique for detecting and quantifying the tolerance of plants to stress. In order to consider the different pollution sources, photosynthetic efficiency (Fv/Fm) of Austrian pine (Pinus nigra Arn.) in urban areas of four cities in Serbia, characterized by different sources of pollution, was assessed. The sampling sites were urban parks in the cities exposed to airborne pollutants from industrial activities, waste disposal and heavy traffic: Belgrade (traffic), Pančevo (factory of nitric fertilizers and a refinery), Obrenovac (thermoelectric power plant and fly ash disposal site), Smederevo (iron smelter), and Košutnjak forest in Belgrade (without direct source of pollution).
Site-dependent variations were found in photosynthetic efficiency (Fv/Fm) of pine trees. A reduced vitality was observed in all the examined sites in relation to control: Pančevo (p<0.001), Obrenovac (p<0.001), Smederevo (p<0.001), and Belgrade p<0.01) followed by toxicity symptoms in form of tip necrosis and decline of the needles, which was the most pronounced in the city of Smederevo.
The results obtained in this study demonstrate that the two-years-old pine needles expressed both physiological and morphological injuries and that the measured reductions in photosynthetic capacity can be attributable to increased uptake and accumulation of the pollutants in the examined sites.
Финансирање / пројекти:
- Екофизиолошке адаптивне стратегије биљака у условима мултипног стреса (RS-MESTD-Basic Research (BR or ON)-173018)
У:
- Vinterhalter D, editor. Programme and Abstracts: 1st International Conference on Plant Biology and 20th Symposium of the Serbian Plant Physiology Society; 2013 Jun 4-7; Subotica, Belgrade. Belgrade: Serbian Plant Physiology Society; 2013. p. 130-1.