PJB-2019-657
Effect of pyrethroid on growth and protein content of two unicellular cyanobacteria (blue green algae)
Saira Bano, Seema Shafique, Zaib-Un-Nisa Burhan and Munawwer Rasheed
Abstract
Two unicellular strains of cyanobacteria Chroococcidiopsis sp. and Microcystis sp. isolated from marine environment were mass cultured and their interaction with pyrethroid pesticides was studied. Pyrethroid pesticides namely cypermethrin and deltamethrin are used widely as agricultural insecticides and have been identified from many environments including soil and water. It is also reported from agricultural runoff and coastal waters of Pakistan. In the current study both strains were exposed to different concentration of pesticides in laboratory conditions. Tolerance limit of these cyanobacteria was determined in different concentrations ranging from 5-500 µg/mL by studying photosynthetic pigments (chlorophyll a and carotenoids), growth rate via dry weight and total proteins. Results showed that these cyanobacterial isolates tolerate cypermethrin up to 100 µg/mL. It was also observed that the presence of pesticides in the media enhanced protein content as compared to control. However, deltamethrin has showed deleterious effects on growth and photosynthetic pigments. Protein content was found decreasing in deltamethrin treated cultures.
To Cite this article:
Bano, S., S. Shafique, Z.U.N. Burhan and M. Rasheed. 2021. Effect of pyrethroid on growth and protein content of two unicellular cyanobacteria (blue green algae). Pak. J. Bot., 53(4): DOI: http://dx.doi.org/10.30848/PJB2021-4(24)
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