Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences
New Breeding Techniques (NBTs) include several new technologies for introduction of new variation into crop plants for plant breeding, in particular the methods that aim to make targeted mutagenesis at specific sites in the plant genome (NBT mutagenesis). However, following that the French highest l...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-11-01
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| Series: | Frontiers in Plant Science |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fpls.2019.01468/full |
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| author | Inger B. Holme Per L. Gregersen Henrik Brinch-Pedersen |
| author_facet | Inger B. Holme Per L. Gregersen Henrik Brinch-Pedersen |
| author_sort | Inger B. Holme |
| collection | DOAJ |
| description | New Breeding Techniques (NBTs) include several new technologies for introduction of new variation into crop plants for plant breeding, in particular the methods that aim to make targeted mutagenesis at specific sites in the plant genome (NBT mutagenesis). However, following that the French highest legislative body for administrative justice, the Conseil d’État, has sought advice from The Court of Justice of the European Union (CJEU) in interpreting the scope of the genetically modified organisms (GMO) Directive, CJEU in a decision from 2018, stated that organisms modified by these new techniques are not exempted from the current EU GMO legislation. The decision was based in a context of conventional plant breeding using mutagenesis of crop plants by physical or chemical treatments. These plants are explicitly exempted from the EU GMO legislation, based on the long-termed use of mutagenesis. Following its decision, the EU Court considers that the NBTs operate “at a rate out of all proportion to those resulting from the application of conventional methods of mutagenesis.” In this paper, we argue that in fact this is not the case anymore; instead, a convergence has taken place between conventional mutagenesis and NBTs, in particular due to the possibilities of TILLING methods that allow the fast detection of mutations in any gene of a genome. Thus, by both strategies mutations in any gene across the genome can be obtained at a rather high speed. However, the differences between the strategies are 1) the precision of the exact site of mutation in a target gene, and 2) the number of off-target mutations affecting other genes than the target gene. Both aspects favour the NBT methods, which provide more precision and fewer off-target mutations. This is in stark contrast to the different status of the two technologies with respect to EU GMO legislation. In the future, this situation is not sustainable for the European plant breeding industry, since it is expected that restrictions on the use of NBTs will be weaker outside Europe. This calls for reconsiderations of the EU legislation of plants generated via NBT mutagenesis. |
| first_indexed | 2024-04-13T23:54:54Z |
| format | Article |
| id | doaj.art-d1459b13fabb45e8854fcc40e5b2b09a |
| institution | Directory Open Access Journal |
| issn | 1664-462X |
| language | English |
| last_indexed | 2024-04-13T23:54:54Z |
| publishDate | 2019-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Plant Science |
| spelling | doaj.art-d1459b13fabb45e8854fcc40e5b2b09a2022-12-22T02:23:55ZengFrontiers Media S.A.Frontiers in Plant Science1664-462X2019-11-011010.3389/fpls.2019.01468488642Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and DifferencesInger B. HolmePer L. GregersenHenrik Brinch-PedersenNew Breeding Techniques (NBTs) include several new technologies for introduction of new variation into crop plants for plant breeding, in particular the methods that aim to make targeted mutagenesis at specific sites in the plant genome (NBT mutagenesis). However, following that the French highest legislative body for administrative justice, the Conseil d’État, has sought advice from The Court of Justice of the European Union (CJEU) in interpreting the scope of the genetically modified organisms (GMO) Directive, CJEU in a decision from 2018, stated that organisms modified by these new techniques are not exempted from the current EU GMO legislation. The decision was based in a context of conventional plant breeding using mutagenesis of crop plants by physical or chemical treatments. These plants are explicitly exempted from the EU GMO legislation, based on the long-termed use of mutagenesis. Following its decision, the EU Court considers that the NBTs operate “at a rate out of all proportion to those resulting from the application of conventional methods of mutagenesis.” In this paper, we argue that in fact this is not the case anymore; instead, a convergence has taken place between conventional mutagenesis and NBTs, in particular due to the possibilities of TILLING methods that allow the fast detection of mutations in any gene of a genome. Thus, by both strategies mutations in any gene across the genome can be obtained at a rather high speed. However, the differences between the strategies are 1) the precision of the exact site of mutation in a target gene, and 2) the number of off-target mutations affecting other genes than the target gene. Both aspects favour the NBT methods, which provide more precision and fewer off-target mutations. This is in stark contrast to the different status of the two technologies with respect to EU GMO legislation. In the future, this situation is not sustainable for the European plant breeding industry, since it is expected that restrictions on the use of NBTs will be weaker outside Europe. This calls for reconsiderations of the EU legislation of plants generated via NBT mutagenesis.https://www.frontiersin.org/article/10.3389/fpls.2019.01468/fullconventional mutagenesisEU legislationNew Breeding Techniques (NBT)NBT mutagenesisprecision breedingoff-target mutations |
| spellingShingle | Inger B. Holme Per L. Gregersen Henrik Brinch-Pedersen Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences Frontiers in Plant Science conventional mutagenesis EU legislation New Breeding Techniques (NBT) NBT mutagenesis precision breeding off-target mutations |
| title | Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences |
| title_full | Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences |
| title_fullStr | Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences |
| title_full_unstemmed | Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences |
| title_short | Induced Genetic Variation in Crop Plants by Random or Targeted Mutagenesis: Convergence and Differences |
| title_sort | induced genetic variation in crop plants by random or targeted mutagenesis convergence and differences |
| topic | conventional mutagenesis EU legislation New Breeding Techniques (NBT) NBT mutagenesis precision breeding off-target mutations |
| url | https://www.frontiersin.org/article/10.3389/fpls.2019.01468/full |
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