MORPHOLOGICAL AND STRUCTURAL MODIFICATION INDUCED BY AIR POLLUTANTS IN ACER CAMPESTRE L. LEAVES
Journal Title: Analele Stiintifice ale Universitatii Alexandru Ioan Cuza din Iasi, Serie noua, Sectiunea II a. Biologie vegetala - Year 2017, Vol 63, Issue 1
Abstract
The study estimated modification in morphology and structure of Acer campestre L. leaf blades under two diverse levels of industrial air contamination. The samples have been collected from the same trees growing on the identical place but in two separated with long time periods: 1990, 1991 – first period and 2004 – second; that are characterized with great difference of pollutant levels, especially for SO2 at least twice in amount through heavy polluted period. The structure and developing of winter buds and leaves lamina have been monitoring through severe contamination to reveal any adaptation responses. Increasing of palisade tissue and decreasing of spongy parenchyma have been detected, during high levels of industrial contamination, but not in the period with relatively low pollution levels, that correlated with increasing the palisade ratio. Augmented palisade ratio stated for an adaptive response of tolerant plants toward the stress factor.
Authors and Affiliations
Snejana BOYCHEVA DINEVA
Keywords
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