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Living Modified Organism (LMO)
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BCH-LMO-SCBD-293849-1   |   PDF   |   Print   |  
Decisions on the LMO Risk Assessments  
last updated: 08 Apr 2026
Living Modified Organism identity
The image below identifies the LMO through its unique identifier, trade name and a link to this page of the BCH. Click on it to download a larger image on your computer. For help on how to use it go to the LMO quick-links page.
Roundup Ready™ Enlist™ maize
EN
DAS40278 x NK603
Yes
DAS-4Ø278-9 x MON-ØØ6Ø3-6
The maize (Zea mays) was produced through cross breeding of modified parental varieties NK603 and DAS40278.  For tolerance to glyphosate, the maize expresses Agrobacterium tumefaciens 5-enolpyruvylshikimate-3-phosphate, which has a low binding affinity for the herbicidal compound and allows for the continued synthesis of aromatic amino acids through the shikimate pathway. For tolerance to aryloxyphenoxypropionate and 2,4-dichlorophenoxyacetic acid herbicides (acetyl‐CoA carboxylase inhibitors), the modified maize expresses Sphingobium herbicidovorans aryloxyalkanoate dioxygenase (AAD-1), which cleaves 2,4-dichlorophenoxyacetic acid into non-herbicidal dichlorophenol and glyoxylate, as well as inactivates aryloxyphenoxypropionate herbicides (acetyl‐CoA carboxylase inhibitors). 
EN
The term “Recipient organism” refers to an organism (either already modified or non-modified) that was subjected to genetic modification, whereas “Parental organisms” refers to those that were involved in cross breeding or cell fusion.
  • BCH-ORGA-SCBD-246-6 Organism Zea mays (Maize, Corn, MAIZE)
    Crops
  • BCH-LMO-SCBD-14776-18 Living Modified Organism MON-ØØ6Ø3-6 - Roundup Ready™ maize
    Monsanto | Resistance to herbicides (Glyphosate)
  • BCH-LMO-SCBD-104814-2 Living Modified Organism DAS-4Ø278-9 - Enlist™ Maize
    Dow AgroSciences GmbH | Resistance to herbicides, Tolerance to 2,4-Dichlorophenoxyacetic acid, Tolerance to aryloxyphenoxypropionate
EN
Characteristics of the modification process
PV-ZMGT32 and pDAS1740
EN
  • Biolistic / Particle gun
  • Cross breeding
  • Other (silicon carbide whisker fibres)
Some of these genetic elements may be present as fragments or truncated forms. Please see notes below, where applicable.
DNA insert from NK603 (vector PV-ZMGT32)
The parental maize contributes two adjacent genetic cassettes for Agrobacterium tumefaciens 5-enolpyruvylshikimate-3-phosphate synthase (cp4-epsps).

In the first (5' end) expression cassette, the cp4-epsps gene is under the transcriptional regulation of an Oryza sativa actin promoter and an A. tumefaciens nopaline synthase gene (nos) terminator. An O. sativa actin intron is also present in the transcript for enhanced expression of the coding sequence. The second cassette consists of another cp4-epsps gene regulated by a Cauliflower mosaic virus enhanced 35S promoter (containing a duplicated enhancer region) and a nos terminator. Similarly, an intron from the Zea mays heat shock protein 70 (hsp70) was included for enhancing expression of the coding sequence. Both promoters of the gene cassettes are expected to promote high levels of transcription.

Note:
  • The parental NK603 line contained a single, intact insertion containing both cp4-epsps gene cassettes.
  •  Due to a restriction digest prior to particle bombardment, the vector backbone, containing Escherichia coli neomycin phosphotransferase II and origin of replication, were not incorporated into the parental genome.

DNA insert from DAS40278 (DAS-4Ø278-9) vector pDAS1740
The parental LMO was generated using the Whiskers-mediated transformation method and contains a Sphingobium herbicidovorans aryloxyalkanoate dioxygenase-1 (aad-1) gene cassette.

The aad-1 coding sequence is under the control of a Zea mays ubiquitin gene promoter and Z. mays root preferential cationic peroxidase terminator. Due to the constitutive nature of the ubiquitin promoter, elevated levels of transcription of this gene cassette are expected to occur.

Note:
  • The aad-1 coding sequence was optimized for expression in the plant.
  • Southern blot analysis indicated that a single complete copy of the transformation cassette was stably integrated into the host genome at a single locus.
  • No integration of the vector backbone occurred.

For more information, kindly refer to the parental LMO records.
EN
LMO characteristics
EN
  • Feed
  • Food
Detection method(s)
EN
Additional Information
EN
Records referencing this document Show in search
Record type Field Record(s)
Country's Decision or any other Communication LMO identification 1
Risk Assessment generated by a regulatory process Living modified organism(s) 1