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Modified Organism
DD-Ø1951A-7 - Herbicide-tolerant cotton
Record information and status
Record ID
Date of creation
2006-06-05 14:39 UTC (kirsty.mclean.consultant@cbd.int)
Date of last update
2013-02-06 14:28 UTC (dina.abdelhakim@cbd.int)
Date of publication
2013-02-06 14:28 UTC (dina.abdelhakim@cbd.int)

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.

LMO name
Herbicide-tolerant cotton
Transformation event
Unique identifier
Pioneer Hi-Bred International Inc.
7100 NW 62nd Avenue
PO Box 1000
Johnston, Iowa
United States of America, 50131
Phone:+1 515 535-3200
Url:Pioneer HiBred International Homepage
Line 19-51a was developed by recombinant DNA techniques to introduce a chimeric ALS gene, which encodes a sulfonylurea tolerant acetolactate synthase (ALS) enzyme.

The ALS enzyme produced in these transgenic cotton lines is a resistant form of the similar enzyme present in all plants, bacteria and fungi, and thereby confers resistance or tolerance to sulfonylurea herbicides.
Recipient Organism or Parental Organisms
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.
Gossypium hirsutum - Cotton
Point of collection or acquisition of the recipient organism
Variety: Coker 312
Characteristics of the transformation process
Techniques used for the modification
  • Agrobacterium-mediated DNA transfer
Genetic elements construct
Octopine Synthase Gene Leader Sequence
0.28 Kb
Acetohydroxy acid synthase promoter
0.88 Kb
Acetohydroxy acid synthase gene (Chimeric)
1.99 Kb
Acetohydroxy acid synthase gene terminator
1.76 Kb
Further details
Notes regarding the genetic elements introduced or modified in this LMO
Southern blot analysis indicated that 2 copies of the construct were inserted in an inverted repeat orientation at one locus in the host genome. Additionally no components of the vector backbone were detected in the 19-51a line
LMO characteristics
Modified traits
Common use(s)
  • Food
  • Feed
  • Fiber/textile
Additional Information
Additional Information
The chimeric S4-HrA gene present in 19-51a expresses a herbicide tolerant ALS, which allows the cotton plant to synthesize essential amino acids in the presence of sulfonylurea herbicides.
Other relevant website address or attached documents

Records referencing this document (2)
2record(s) found
Country's Decision or any other Communication1 record
Risk Assessment1 record