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Egyptian Journal of Aquatic Biology and Fisheries
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Mohammed-Geba, K., Galal, M., Y Osman, G., M Soliman, M. (2019). Application of DNA barcoding for identifying potential biotechnological candidate organisms from the River Nile, Egypt.. Egyptian Journal of Aquatic Biology and Fisheries, 23(4), 563-575. doi: 10.21608/ejabf.2019.62580
Khaled Mohammed-Geba; Mansour Galal; Gamalat Y Osman; Mona M Soliman. "Application of DNA barcoding for identifying potential biotechnological candidate organisms from the River Nile, Egypt.". Egyptian Journal of Aquatic Biology and Fisheries, 23, 4, 2019, 563-575. doi: 10.21608/ejabf.2019.62580
Mohammed-Geba, K., Galal, M., Y Osman, G., M Soliman, M. (2019). 'Application of DNA barcoding for identifying potential biotechnological candidate organisms from the River Nile, Egypt.', Egyptian Journal of Aquatic Biology and Fisheries, 23(4), pp. 563-575. doi: 10.21608/ejabf.2019.62580
Mohammed-Geba, K., Galal, M., Y Osman, G., M Soliman, M. Application of DNA barcoding for identifying potential biotechnological candidate organisms from the River Nile, Egypt.. Egyptian Journal of Aquatic Biology and Fisheries, 2019; 23(4): 563-575. doi: 10.21608/ejabf.2019.62580

Application of DNA barcoding for identifying potential biotechnological candidate organisms from the River Nile, Egypt.

Article 44, Volume 23, Issue 4, October 2019, Page 563-575  XML PDF (591.57 K)
Document Type: Original Article
DOI: 10.21608/ejabf.2019.62580
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Authors
Khaled Mohammed-Gebaorcid ; Mansour Galal; Gamalat Y Osman; Mona M Soliman
Abstract
Ciliated protozoa play many fundamental roles in the aquatic environments where they thrive. They mediate the microbial loop of the universal food web, control the surrounding organisms, and act as biomarkers for water quality, beside some capability for the production of bioactive compounds. Identification of different ciliate species is chiefly based on morphological taxonomy. In order to develop molecular tools that facilitate the exploration of freshwater Nile ciliates, a direct, 18srDNA-based PCR assay was tuned up. This assay was tested for DNA-barcoding of some species that prevail the Nile in Mansoura City in the North of Egypt. The resulting sequences were applied to design new species-specific PCR assays for detection of density of these ciliates in River Nile. Using both newly-designed primers and assays, the top identified species were Euplotes woodurffi, Halteria grandinella, and Coleps hirtus. The species-specific primers produced variable-sized PCR amplicons, with densities that were at least correlated by 95 % with the real species count in the riverine water. The newly designed molecular tools are expected to facilitate the exploration and quantification of those species in different aquatic habitats where they exist, adding a major contribution to future efforts for exploiting them as resources for blue biotechnology.
Keywords
Ciliated Protozoa; DNA barcoding; River Nile; Euplotes woodurffi; Halteria grandinella
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