Genetic engineering (GE) is currently the largest human and ecological
experiment in history. GE enables scientists to manipulate the genes of
all living things in ways that never occur in nature. The new
bio-technologies that manipulate the genes of micro-organisms including
bacteria and viruses, seeds, fish, animals and humans are dogged by
controversy and uncertainties. We do not have clear answers to many
questions.
What does this mean for human, animal and plant health and safety? How
does it affect biodiversity, food security and environmental integrity?
How do we prevent scientific knowledge from being overshadowed by the
greed of commercialism? How do we prevent genetic engineering being
science driven to a business driven enterprise? These are some of the
fundamental questions that challenge society and those who govern and
thus bear a major responsibility in making technological choices that
impact on life itself.
Over the next two decades the US industry carried on research on GE and
introduced the Flavr Savr tomato, engineered to delay softening and thus
extend shelf life. The biotechnology company was Calgene. Flavr Savr
tomato was the first commercial GE food in the world. Some of the
questions on the safety of GE foods mentioned above were aired when the
Flavr Savr tomato came up for commercial approval by the Food and Drug
Administration (FDA), US.
Controversy dogged the approval process with scientists warning of
potential health hazards that had not been properly explored. Despite
the limitation of the risk assessment, the FDA in approving the tomato
also decided that subsequent GE goods would not require similar reviews.
Worse, a voluntary consultation process replaced the formal approval by
the FDA. The industry's push to deregulate was successful. Currently
there is no mandatory labelling requirement for GE foods in the US even
though more than 80 percent of polled consumers want it.
In contrast, the European Union has a strict bio-safety legislative
framework in place which requires developers to submit a comprehensive
risk assessment for GE foods prior to any commercialization. Any
approval is given for 10 years and is subject to review. There are
labelling requirements for GE foods.
Today, even as the biotech and agricultural industry continue to
aggressively push for commercialization of GE crops and food, evidence
is emerging of risks and hazards. The major concerns are the perils of
GE Rice.
Rice feeds more than half the worlds population. In much of Asia,
including Sri Lanka, rice is the staple food. China is the world's
largest producer and consumer of rice. But the discovery of GE rice,
unapproved for human consumption, in Hubei province in China brought out
the worst fears of critics that contamination of the food chain has
occurred. The Chinese government has not authorized GE rice for
commercial planting. Field tests have been permitted, to grow rice
resistant to herbicides or producing endotoxins to kill insects and
pests; but there have been cases of contamination by these unapproved
varieties of Chinese rice and Chinese products in the market. This led
to the EU applying measures to deal with these unapproved products for
example by testing products and removing contaminated products from the
shelves.
Research carried out by Chinese scientists show that there are
environmental risks such as gene flow from GE rice to wild and weedy
relatives of rice, which could affect the weedy rice populations which
are a problematic weed. These weeds pose an environmental threat and
controlling them will be a major problem facing rice farmer.
At present GE rice is not commercially cultivated anywhere in the world
although the US has deregulated two traits of rice resistant to
herbicides.
Despite the apparent positive outlook for GE rice, serious concerns have
been raised on its impact on human and animal health, the environment
and socio-economic situations. It appears that GE rice research has so
far outpaced safety considerations. Against this backdrop, many
developing countries, including Sri Lanka, are lured into ambitions for
a biotech future. But these countries do not have the capacity to
thoroughly assess these new technologies and to monitor GE plants and
other organisms in the environment and food chain. The Assistant
Director General/Regional Representative of the Food and Agricultural
Organization (FAO) of the UN Regional Office for Asia and The Pacific in
2004 advised that Asian Governments should move cautiously before
approving commercial planting of GE rice. He urged governments to
undertake extensive risk assessment on food safety.
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