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Living Modified Organism (LMO)
  |  
Decisions on the LMO Risk Assessments  
published: 28 Mar 2013 last updated: 13 Jul 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.
Enlist™ Maize
EN
DAS-40278-9
Yes
DAS-4Ø278-9
The maize DAS-4Ø278-9 was modified for tolerance to the herbicides 2,4-dichlorophenoxyacetic acid (2,4-D) and aryloxyphenoxypropionate (AOPP) acetyl coenzyme A carboxylase (ACCase) inhibitors. To achieve herbicide tolerance, the maize expresses an optimised coding sequence for aryloxyalkanoate dioxygenase from Sphingobium herbicidovoran
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.
EN
Characteristics of the modification process
pDAS1740
EN
  • Direct DNA transfer
Some of these genetic elements may be present as fragments or truncated forms. Please see notes below, where applicable.
  • BCH-GENE-SCBD-104795-4 RB7 matrix attachment region | Nicotiana tabacum (Tobacco, TOBAC )
    Enhancer
  • BCH-GENE-SCBD-100362-7 Ubiquitin gene promoter | Zea mays (Maize, Corn, MAIZE)
    Promoter
  • BCH-GENE-SCBD-104812-3 Aryloxyalkanoate dioxygenase gene | Sphingobium herbicidovorans (SPHHE)
    Protein coding sequence | Resistance to herbicides,Tolerance to 2,4-Dichlorophenoxyacetic acid,Tolerance to aryloxyphenoxypropionate
  • BCH-GENE-SCBD-104813-4 Per5 3' Untranslated Region | Zea mays (Maize, Corn, MAIZE)
    Terminator
Information about the inserted DNA sequences
The DNA insert from maize DAS-4Ø278-9 comprised a genetic cassette expressing the gene encoding aryloxyalkanoate dioxygenase (aad1) from Sphingobium herbicidovoran using the Whiskers mediated transformation method.

The aad1 gene is regulated by the Zea mays polyubiquitin gene promoter and the peroxidase 5 3' Untranslated Region. The aad1 coding sequence was modified for plant-optimized expression. High levels of transcription are expected due to the strong constitutive promoter. Nicotiana tabacum RB7 matrix attachment 5' and 3' regions were also inserted (MAR) to enhance structural anchoring of chromosomes to the cell's nuclear matrix.

Note
  • Southern blot analysis indicated that a single complete copy of the transformation cassette was stably integrated into the host genome at a single locus and that there was no integration of segments from the vector backbone.
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)
Living Modified Organism Recipient Organism or Parental Organisms 40
Living Modified Organism Related LMO(s) 1
Country's Decision or any other Communication LMO identification 19
Risk Assessment generated by a regulatory process Living modified organism(s) 19
Laboratory for detection and identification of LMOs LMO(s) detectable by the laboratory 8