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BIOSAFETY OF BT COTTON (GOSSYPIUM HIRSUTUM L. ):
CHALLENGES, SOLUTIONS, AND FUTURE DIRECTIONS
Alijonova Mohinur Toxirjon qizi
National University of Uzbekistan named after Mirzo Ulugbek
mohinuralijonova9977@gamil. com
Abstract:
Bt cotton, genetically engineered to express insecticidal proteins from
Bacillus thuringiensis, has transformed pest management in cotton production. While
it offers economic and ecological advantages, concerns persist about its biosafety,
particularly regarding environmental impacts, gene flow, resistance evolution, and
long-term sustainability. This review adopts a problem–solution–suggestion
framework, integrating insights from recent literature and foundational biosafety
texts. We critically assess the main biosafety risks, discuss regulatory and scientific
responses, and propose future strategies for enhancing Bt cotton stewardship in the
face of evolving agricultural challenges.
Keywords
: Bt cotton, Biosafety, Genetically modified organisms (GMOs),
Gossypium hirsutum, Bacillus thuringiensis, Environmental risk assessment, Pest
resistance, Integrated pest management, Genetic engineering, Gene editing, Biosafety
regulations, International biosafety standards, Transparency in GMO use
Introduction
Bt cotton is one of the most widely adopted genetically modified crops in the
world. It produces proteins from Bacillus thuringiensis that kill certain insect pests,
reducing the need for chemical pesticides. This has helped farmers increase their
yield and lower production costs. However, since its introduction, scientists,
regulators, and the public have raised several questions about its safety. Biosafety
means making sure that genetically modified organisms (GMOs) do not harm people,
animals, or the environment. In this article, we look at the main problems that Bt
cotton may cause, how these problems have been handled, and what can be done in
the future to improve safety and acceptance.
Problem: General Biosafety Concerns of Bt Cotton
Bt cotton is a genetically modified crop that helps control insects and reduce the
need for chemical pesticides. While it has many benefits, it has also raised several
biosafety concerns. One of the biggest concerns is its effect on the environment.
Scientists worry that the insect-killing proteins in Bt cotton might also affect helpful
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insects like bees or ladybugs, as well as small organisms in the soil. Even though
these proteins are designed to be safe, long-term effects are still being studied.
Another issue is insect resistance. If the same Bt cotton is planted over and over,
the pests may develop resistance to it. This means that the crop might stop working as
intended, and farmers may need to use chemical sprays again. Resistance has already
been seen in some areas.
There are also concerns about gene flow, where the Bt gene could move to wild
or traditional cotton plants. Although cotton does not usually cross-pollinate much, it
can happen under some conditions. This is especially important in places where
cotton has natural wild relatives.
Finally, people in some regions are worried about more than just science. They
may have concerns about seed ownership, transparency, and the social effects of
adopting GM crops. These concerns often affect public trust and influence how Bt
cotton is used or accepted in different countries. Solution: How Biosafety Concerns
Are Being Addressed
To solve these issues, scientists and governments have put systems in place to
make sure Bt cotton is safe. Before Bt cotton is allowed to be grown in a country, it
goes through a full review process. This includes checking the gene that was added,
testing if the protein is safe for people and animals, and comparing the GM cotton to
normal cotton to make sure it has not changed in a harmful
way.
Environmental
risk assessments are also done. These studies look at whether Bt cotton affects the
insects, soil, or nearby plants in a bad way. These assessments are based on
international rules and help make sure the crop is safe in different
environments.
In the field, farmers are encouraged to use good farming practices. This includes
planting areas of regular cotton near Bt cotton (called 'refuges') so that insects do not
quickly develop resistance. Farmers are also trained to watch for new pests and to use
other control methods besides just Bt cotton.
Governments have created laws and agencies to control how Bt cotton is tested
and used. These agencies decide if the crop can be released and what safety rules
must be followed. They also help monitor the crop after it is approved, to catch any
problems early.
In addition, countries are working together to share safety data and help each
other build strong biosafety systems. This helps avoid confusion and keeps trade in
cotton products running smoothly.
Suggestions and Future Directions
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In the future, more attention should be given to using Bt cotton as part of an
integrated system. Farmers should combine Bt cotton with other methods like
rotating crops, using natural predators, and planting pest-resistant traditional
varieties. This will help keep pests from adapting too quickly.
Also, newer technologies like gene editing may help make GM crops that are
even safer and more targeted. These methods can avoid some of the issues seen with
earlier GM crops.
Finally, countries should work together to make biosafety rules more similar and
transparent. If different countries share data and use similar standards, it will help
everyone trust that GM crops like Bt cotton are being used safely and responsibly.
Conclusion
Bt cotton has helped farmers protect their crops and reduce the use of harmful
chemicals. Many studies have shown that it is safe when used correctly. However, it
still brings up some challenges. These include effects on nature, pest resistance, and
public acceptance. By using strong science, clear laws, and better communication, we
can make sure Bt cotton continues to be safe and helpful in the future. Biosafety is
not just about science—it’s also about listening to people, protecting nature, and
building trust.
References:
1.
Hull, R. , Head, G. P. , & Tzotzos, G. (2020). Genetically Modified
Plants: Assessing Safety and Managing Risk. Academic Press.
2.
Ricroch, A. , & Hénard-Damave, M. C. (2016). Environmental Risk
Assessment of Genetically Modified Organisms. CABI.
3.
Persley, G. J. , Giddings, L. V. , & Juma, C. (1999). Biosafety: The Safe
Application of Biotechnology in Agriculture. World Bank.
4.
Romeis, J. et al. (2019). Environmental effects of Bt crops. Nature
Biotechnology, 37(4), 360–369.
5.
Lu, Y. et al. (2010). Mirid bug outbreaks in Bt cotton. Science,
328(5982), 1151–1154.
6.
EFSA. (2021). Scientific opinion on Bt cotton GHB811. EFSA Journal,
19(4), e06781.
