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- Genetically Engineered Crops: Experiences and Prospects ()
If GE crops are to be used sustainably, regulations and incentives are needed so that more integrated and sustainable pest-management approaches become economically feasible. The committee also found that in many locations some weeds had evolved resistance to glyphosate, the herbicide to which most GE crops were engineered to be resistant.
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Resistance evolution in weeds could be delayed by the use of integrated weed-management approaches, says the report, which also recommends further research to determine better approaches for weed resistance management. Insect-resistant GE crops have decreased crop loss due to plant pests. However, the committee examined data on overall rates of increase in yields of soybean, cotton, and maize in the U.
It is feasible that emerging genetic-engineering technologies will speed the rate of increase in yield, but this is not certain, so the committee recommended funding of diverse approaches for increasing and stabilizing crop yield. All technologies for improving plant genetics -- whether GE or conventional -- can change foods in ways that could raise safety issues, the committee's report notes.
It is the product and not the process that should be regulated, the new report says, a point that has also been made in previous Academies reports. In determining whether a new plant variety should be subject to safety testing, regulators should focus on the extent to which the novel characteristics of the plant variety both intended and unintended are likely to pose a risk to human health or the environment, the extent of uncertainty about the severity of potential harm, and the potential for human exposure -- regardless of whether the plant was developed using genetic-engineering or conventional-breeding processes.
The United States' current policy on new plant varieties is in theory a "product" based policy, but USDA and EPA determine which plants to regulate at least partially based on the process by which they are developed. But a process-based approach is becoming less and less technically defensible as the old approaches to genetic engineering become less novel and as emerging processes -- such as genome editing and synthetic biology -- fail to fit current regulatory categories of genetic engineering, the report says.
The distinction between conventional breeding and genetic engineering is becoming less obvious, says the report, which also reviews emerging technologies. Some emerging genetic engineering technologies have the potential to create novel plant varieties that are hard to distinguish genetically from plants produced through conventional breeding or processes that occur in nature.parse.carproof.com/nuestro-hogar-camino-a-una-guerra-civil.php
National Academy reports seen as beacons for civil public discourse
A plant variety that is conventionally bred to be resistant to a herbicide and one that is genetically engineered to be resistant to the same herbicide can be expected to have similar associated benefits and risks. Regulating authorities should be proactive in communicating information to the public about how emerging genetic-engineering technologies or their products might be regulated and how new regulatory methods may be used.
They should also proactively seek input from the public on these issues. Not all issues can be answered by science alone, the report says. Policy regarding GE crops has scientific, legal, and social dimensions. For example, on the basis of its review of the evidence on health effects, the committee does not believe that mandatory labeling of foods with GE content is justified to protect public health, but it noted that the issue involves social and economic choices that go beyond technical assessments of health or environmental safety; ultimately, it involves value choices that technical assessments alone cannot answer.
Materials provided by National Academy of Sciences.
Note: Content may be edited for style and length. Science News. ScienceDaily, 17 May National Academy of Sciences.
Genetically engineered crops: Experiences and prospects. Retrieved September 25, from www. To help improve breeding strategies for this root crop, a team of But what if adding a gene from undomesticated plants to bring back a natural trait Below are relevant articles that may interest you. ScienceDaily shares links with scholarly publications in the TrendMD network and earns revenue from third-party advertisers, where indicated. Boy or Girl? Did Mosasaurs Do the Breast Stroke?
Genetically Engineered Crops: Experiences and Prospects ()
There was a sharp increase in Twitter conversations when the NASEM report was publicly released in May of that year, according to the new study. That, says Brossard, suggests that the report gained currency with the public and had the desired effect of fostering informed public conversation.
Those expert conclusions, say Jamieson and Brossard, not only percolated through traditional and social media, fueling conversations on Twitter and elsewhere, but were also changing the tenor of the debate. It is uniquely positioned to facilitate these public conversations. Other lessons, she adds, are that communication matters, and that the big picture — weaving in all the dimensions of a polarizing issue — can abet public conversation and debate. For instance, she notes the GMO report would have had much less utility had it focused on just a single aspect of the debate such as human health.
Such reports have the most impact when there is a commitment to sharing results as broadly as possible, says Brossard.
Tags: College of Agricultural and Life Sciences , communications , research , social media. University of Wisconsin—Madison. Dominique Brossard. Share via Facebook. Share via Twitter. Share via Linked In.
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