GMO Impact On Multi-Species Case Study

993 Words 4 Pages
GMO impact on multi-species (SAM)
A study base research was conducted to determine the persistence and ecological impacts of a cyanobacterium genetically engineered to express mosquitocidal Bacillus thuringiensis toxins. The cyanobacterium Anabaena has been genetically engineered to contain Bacillus thuringiensis israelensis that is a group of bacteria used as biological control agents for larvae stages of certain dipterans, also known as fly. To see the ecological impacts, it must be evaluated using multi-species, standardized aquatic microcosms. The microcosms were set up as described in ASTM E1366-02 with certain modification. The treatment group microcosms were inoculated with cyanobacterium Anabaena and key water quality parameters and
…show more content…
It was shown that the cyanobacterium Anabaena decreased from a concentration of 4.50 x 10^6 cells/ml at inoculation to 1.32 x 10^3 cells/ml after 4 weeks and larvicidal activity against third larvae of Anopheles arabiensis, a species of dry savannah environments, was only evident for two weeks after the treatments. Both the treatments, the interaction of treatment, and time had a significant effect on nitrate, phosphate and photosynthetic microorganism concentrations. The nitrate concentration was significantly higher in the cyanobacterium Anabaena microcosms (3.21 mg/l) than in the control microcosms (2.88 mg/l) on day 18. The nitrite concentration decreased from an initial concentration of approximately 0.66 mg/l to below 0.025 mg/l by day 18 and remained low to the end of the experiment in both microcosm. The phosphate concentration decrease initially in both microcosms until days 25-35 the phosphate concentration in the microcosms increases, but mostly higher in the cyanobacterium Anabaena than the control microcosms. The standard aquatic microcosm experiments provided more data on the ecological impacts of cyanobacterium Anabaena than …show more content…
The Pakistan Journal of Science explain the ways that biotechnology is a vital issue that impacts all life and example is the development of genetically modified organisms that is one of the highest achievement of this technology. Genetically modified organisms are being released throughout the environment and deployed with superficial or no risk assessment about its matchless powers to harm life, but in the journal article it reveals the great danger of GMOs. In 1989, it is recorded that dozens of Americans died and several thousands were afflicted and impaired by a genetically alter versions of the food supplement called L-tryptophan. Not long ago, in 1996 Brazil nut genes were inserted into soybeans by a company called Pioneer Hi-Bred. This genetically engineer lead to individuals go into anaphylactic shock that is like a severe bee sting reaction which can caused death just because of an allergic reaction of this new genetically modified nut. Furthermore, animal tests had confirmed the peril and fortunately the product had to be removed from the market before any fatalities occurred. Another event that proves the danger of GMOs is in the year of 1994 when FDA approved Monsanto’s rBGH known as a genetically produced growth hormone for injection into dairy cows. Scientist had even warned the resulting increase of insulin like Growth Factor-1, a potent chemical hormone, that is linked to 400-500% higher risks of human breast,

Related Documents