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24 January 2014 07:43:15 |

Rothamsted submits GM field trial application


Rothamsted Research has submitted an application to the Department for Environment, Food and Rural Affairs for permission to carry out a GM field trial on the Rothamsted Farm in 2014, 2015, 2016 and 2017.
Scientists at Rothamsted Research, who receive strategic funding from the Biotechnology and Biological Sciences Research Council, have developed Camelina plants that accumulate omega-3 long chain polyunsaturated fatty acids (LC-PUFAs) in their seeds and the purpose of the proposed trial is to evaluate in the field the performance of this trait.
Omega-3 LC-PUFAs have been shown to be beneficial for human health and contribute to protection against coronary heart diseases (CHD) (FAO/WHO Expert Consultation on the Risks and Benefits of Fish Consumption 2011).
The primary dietary sources of these fatty acids are marine fish either wild stocks or farmed fish (aquaculture). Fish like humans do not produce these oils but rather they accumulate them through their diet in the wild or through fishmeal and fish oil in farmed fish.
Around 80 percent of all fish oil is consumed by the aquaculture sector and this rapidly expanding modern industry is seeking new omega-3 LC-PUFAs sources to ensure its production practices remain sustainable and nurture the essential aquatic food web (FAO GLOBEFISH).
One potential approach towards flexible and sustainable supply of omega-3 LC-PUFAs is to engineer a crop plant with the capacity to synthesise these fatty acids in seeds.
Rothamsted Research, through the strategic funding that receive from the BBSRC, have over the years developed genetically engineered Camelina plants that can successfully produce omega-3 LC-PUFAs in the lab and in the glass house (Ruiz-Lopez et al.2013).
Professor Johnathan Napier, lead scientist of this project at Rothamsted Research said: “The Omega-3 LC-PUFAs that are beneficial for health are eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). They modulate both metabolic and immune processes and confer the health benefits in areas of CHD and neurodevelopment (Flock et al. 2013.). Plant sources of omega-3, e.g. Flax seed, do not produce EPA and DHA; instead they produce shorter chain omega-3 fatty acids such as a-linolenic acid (ALA). ALA does not confer the health-beneficial properties associated with EPA and DHA, despite the former also being an omega-3 fatty acid. Not all omega-3 fatty acids are equivalent. We used synthetic gene sequences involved in the biosynthesis of omega-3 LC-PUFAs that have been optimised in order to be functional in Camelina plants. These synthetic sequences are based on the sequence of genes found in photosynthetic marine organisms, and other lower eukaryote species such as mosses and oomycetes.”
“We have produced three varieties of plants one where four synthetic genes have been introduced into the plant, one that five genes have been introduced in the plant and one that seven synthetic genes have been introduced into the plant. The reason why we needed to introduce this number of synthetic genes is that the synthesis of omega-3 LC-PUFAs requires multi-step processes. In order to achieve maximum production of these oils in the seed of Camelina plants we had to help the internal biosynthetic machinery of the plant to shift from ALA towards the production of EPA and DHA”, Johnathan Napier added.
Professor Martin Parry, Acting Director of Rothamsted Research said: “it will be a significant step forward, if we are granted permission to perform a controlled experiment in our already established facilities here at Rothamsted Research. We will be able to assess in “real environmental conditions” the potential of contributing a more sustainable and affordable alternative way of providing fish oil. This will potentially enable us to provide knowledge that may contribute in reducing the pressure on the marine resources. Carrying out a field experiment will be the only way to assess the viability of a solution that can bring economic benefits to the farmers, returns to the UK taxpayer,, benefits to the UK economy as a whole and the environment in general. Here at Rothamsted we are very happy to provide any further information and explanation on this area of research to the public so that informed contributions may be made to the ongoing consultation carried out by Defra.”
BBSRC’s Science Director, Professor Melanie Welham, said: “The challenge of producing food in a sustainable way, while minimising effects on the environment, is of great importance and we must explore a variety of tools and technologies that could help us to tackle it. This new trial will help researchers to investigate one such tool in a realistic field environment so that scientific evidence can inform future decisions on how best to meet the needs of a growing population.”
Once the Rothamsted application is passed to Defra, the independent expert group, the Advisory Committee of Releases to the Environment (ACRE), will evaluate the application through a statutory 90 day process which a includes a public consultation.
The Secretary of State will consider any representations made to him relating to any risks of damage to the environment posed by the release of the genetically modified organisms within a period that he shall specify in accordance with the Genetically Modified Organisms (Deliberate Release) Regulations 2002.
The Secretary of State will place information on this proposed GMO release on a public register within 12 days of his receipt of the application.
If granted permission to conduct the field trial this controlled experiment will be part of our Institute Strategic Programme of Research Designing Seeds for Nutrition and Health, which receives financial support from the BBSRC.

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