Response of African marigold (Tagetes erecta L.) to different concentrations of chlorpyrifos and microbial diversity in root rhizosphere
Journal Title: Journal of Coastal Life Medicine - Year 2017, Vol 5, Issue 4
Abstract
Objective: To assess the response of African marigold (Tagetes erecta L.) to exposed different concentration of chlorpyrifos by evaluating morphology (root and shoot length), biomass (fresh weight and dry weight), photosynthetic pigments (chlorophyll a and b), protein and microbial diversity in root rhizosphere. Methods: The study was carried out in pot culture and treated with various concentrations (0.5%, 1.0%, 2.0%, and 2.5%) as well as control treatments. The morphological, biomass, photosynthetic pigments, protein, and microbial diversity were analyzed on 30, 60, and 90 days. Results: The obtained results revealed that the tested pesticide reduced the growth, biomass and photosynthetic pigment of African marigold when applied at higher concentration than the optimum dosage. But the lower dose the pesticide had some stimulatory effect of analyzed parameters. A similar effect of pesticide was observed on the microbial population of root rhizosphere that is decreased in microbial population was caused at higher doses. But it was increased at lower doses. Conclusions: It can be concluded that pesticide above the certain dosage level adversely affect all the analyzed parameters at higher doses. The application of recommended doses should be discouraged. Further study is needed for the effect of pesticide use on microbial diversity, since these studies are carried out in a controlled pot experiment, including the current study. Thus, future study directed towards by studying the phyoremediation of theses contaminted site with intraction of microbes.
Hematological, antioxidant and protective performance of Usnea longissima on chemical induced hepatotoxicity in experimental animals
Objective: To investigated the hematological, antioxidant and protective performance of Usnea longissima (U. longissima) on CCl4 induced hepatotoxicity in experimental animals. Methods: Hepatotoxicity was induced by CCl4...
Environmental effect of resort centres on the distribution of aquatic insect fauna in Ethiope River, Delta State, Nigeria
Objective: To assess water quality and diversity of aquatic insects relative to effluents discharge from resort centres in Ethiope River. Methods: Water samples collected from three study stations were analyzed using APH...
Toxicity of cadmium on larvae of Palaemon adspersus Rathke, 1837 from the Black Sea
Objective: To evaluate the suitability of Palaemon adspersus (P. adspersus) as a bio-indicator for 4 and 10 days of cadmium toxicity bioassays. Methods: Four and ten days experiments were designed. CdCl2·2½H2O was dissol...
Epidemiological and spatial analysis of scorpion stings in two regions of Morocco: Marrakesh-Tensift-Al Haouz and Souss-Massa-Draa
Objective: To describe and compare the epidemiological features of scorpionism during six years (2005–2010) in two regions of Morocco: Marrakesh-Tensift-Al Haouz and Souss-MassaDraa. Methods: Clinical and epidemiological...
Dermatophytosis in special patient populations
Objective: To study the occurrence and prevalence of dermatomycosis in special patient populations suffering from diabetes, cancer and heart diseases. Methods: A total of 640 patients suffering from diabetes, 280 patient...