EU approves gene-editing rules, opening doors for Estonian plant scientists

The European Parliament has passed legislation easing restrictions on plants developed using new genomic technologies, including CRISPR/Cas gene-editing tools. The change gives Estonian researchers at institutions like Tartu University and the Jõgeva plant breeders a clearer path to bring gene-edited crops to experimental fields. A two-year transition period means practical effects won't be immediate, but scientists say the shift is a long-awaited breakthrough.

The European Parliament has approved new legislation that significantly relaxes the rules governing plants bred using modern gene-editing techniques such as CRISPR/Cas, the so-called "gene scissors." For researchers in Estonia, the change represents a turning point that could accelerate the journey from laboratory to field for climate-resilient and disease-resistant crop varieties.

A Long-Awaited Policy Shift

Until now, the European Union treated gene-edited plants with the same strict caution it applied to traditional genetically modified organisms (GMOs). A landmark 2018 ruling by the EU Court of Justice determined that crops produced through precision breeding, even those with only a single altered DNA "letter," or nucleotide, had to meet the same regulatory requirements as plants carrying foreign DNA. Critics, including many scientists, argued this placed European research at a competitive disadvantage.

The new regulation draws a clear distinction between two categories. Plants in the first group must have traits that could have arisen naturally or through conventional crossbreeding and will be regulated similarly to traditionally bred varieties. Plants in the second group, carrying more complex genetic modifications, remain subject to the older, stricter GMO rules including full risk assessment before market entry.

Estonian Researchers React

Hannes Kollist, Professor of Plant Molecular Biology at the University of Tartu, welcomed the shift but noted its limitations. «Now that this restriction disappears, very many projects will only start gaining momentum,» said Kristiina Laanemets, Senior Researcher and head of the Rural Life Knowledge Centre. She recalled that until recently, scientists working with gene-editing techniques for research purposes were routinely asked why they bothered if the resulting varieties were not permitted in the EU. «In Estonia, the attitude towards this was rather open and innovative,» she added.

Kollist echoed that assessment: «This is certainly a big step forward, as it gives innovations the opportunity to move into practice, that is, to implement the results of scientific work in agriculture more quickly.»

Progress Already Underway in Jõgeva

Plant breeders at the Jõgeva research station have already been using CRISPR/Cas methods in their everyday work. Laanemets confirmed that no varieties are yet ready for market release, but that preliminary laboratory experiments have yielded promising results in barley. «We have managed to make very interesting and promising changes in barley that would certainly deserve field trials as soon as we can multiply the seeds in sufficient quantity,» she said.

Kollist pointed out that laboratories across Europe likely have stockpiles of CRISPR-developed plants waiting for precisely this regulatory green light: «Scientists in laboratories obviously already have many plants and varieties created by the CRISPR/Cas method that could be useful and can now be tested in field conditions and then brought to market.»

Political Compromises and Scientific Criticism

Not everyone is entirely satisfied with the technical parameters embedded in the new law. The legislation, for instance, sets a cap of 20 nucleotides on the length of DNA sequences that can be altered for plants to qualify under the less-regulated first category. Kollist was candid in his criticism: «This is more of a political compromise. There may be serious questions about patent rules, but the established restrictions, such as the 20-nucleotide rule, have little to do with scientific justification.»

He illustrated the absurdity of the limit: «The genomes of two plants growing side by side in a field can differ from each other by more than 20 nucleotides. Even two seeds ripening in the same ear probably differ from each other by more than 20 nucleotides, since DNA replication is never 100% accurate.»

Laanemets, however, was pleasantly surprised by where the Brussels debate ultimately focused. «In society, many think that since there is so much controversy around this topic, there must be doubts about the safety of such plants. But as far as I can tell from the discussions, there was almost no talk about how dangerous or safe these plants are. For me, that was an interesting and pleasant surprise,» she said. The most contentious issue turned out to be intellectual property rights, as farmers expressed concern about large corporations monopolising gene-edited seed patents. The law will require companies to disclose patents related to new varieties to protect smaller seed producers.

Two-Year Wait Before Real-World Impact

Consumers and farmers should not expect to see gene-edited varieties in Estonian fields immediately. The legislation includes a two-year transition period during which officials will work out practical implementation details. Laanemets cautioned against expecting instant results: «Since all the details will only be fine-tuned over the next two years, this is a big step forward, but an immediate effect should probably not be expected. Greater hope lies in plants that have been bred for external markets and already meet the criteria, since trials have already been conducted in countries where this was previously possible.»

Crucially, lawmakers built in flexibility for the future by placing technical limits in a separate annex to the legislation, making it easier to update those parameters as scientific understanding and public acceptance evolve. «If science advances further and people's openness and understanding of this method improve, then updating the conditions of the annex should become easier, as the main part of the regulation is already fixed,» Laanemets noted.