Year: 2014 | Month: July | Volume 7 | Special Issue
Chronic toxic effect of Acenapthene on diverse microalgaes and cyanobacteria: Chlorella vulgaris Beijerinck, Desmodesmus subspicatus Chodat and Scytonema sp.
Abstract:
There is an increasing need to describe the growth characteristics of algae exposed to polycyclic aromatic hydrocarbons (PAHs) because of occurrence of PAHs in lakes is known to deleteriously affect the growth of microorganisms. This study explored the chronic effect of different doses of three ring structure polycyclic hydrocarbon Acenapthene on the growth of two microalgal species and one cyanobacterial species. C. vulgaris, D. subspicatus and Scytonema sp. cultivated in the medium with different concentration of PAH and its affect was investigated during increasing 4, 8, 12 and 16 Days of exposure. The growth of Chlorella vulgaris, Desmodesmus subspicatus and Scytonema sp. was adversely affected by Acenapthene. The results indicated that the increased concentration of Acenapthene negatively impacted on chlorophyll content, carotenoids, phycobilliproteins, carbohydrate, amino acids, proteins, nitrate reductase, succinate dehydrogenase and glutamate synthetase except phenol . However, the raise in Phenol content was observed during the incubation period. Moreover, a high significance correlation (F>0.05) existed between different metabolites, pigments and enzymes which was statistically confirmed by Two Way Analysis of variance (ANOVA).
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