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Modified Organism
Cowpea resistant to lepidoptera pests
Record information and status
Record ID
Date of creation
2012-06-18 17:56 UTC (manoela.miranda@cbd.int)
Date of last update
2012-08-24 19:51 UTC (dina.abdelhakim@cbd.int)
Date of publication
2012-08-24 19:51 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
Cowpea resistant to lepidoptera pests
Transformation event
Twelve lines: 709A, 710B, 711B2, 708A, 808B1, 162B2, 716F, 717B, 715A, 152D, 155A, 720D
The African Agricultural Technology Foundation (AATF)
P.O. Box 30709
Kenya, 00100
Phone:+ 254-20 422 3700
Url:The African Agricultural Technology Foundation
Bt-cowpea is genetically modified by insertion of gene Cry1Ab. It is resistant to Maruca vitrata Fab., one of the main depredators of cultivated and wild cowpea.

Bt-cowpea was genetically modified through a transformation mediated by Agrobacterium. It expresses the gene Cry1Ab and it is present in the tissues of the plant that confer it its resistance to Maruca.
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.
Vigna unguiculata - Cowpea, Black eyed pea
Characteristics of the transformation process
pMB4 derived from pArt27
Techniques used for the modification
  • Agrobacterium-mediated DNA transfer
Genetic elements construct
rbcS Promoter
1.72 Kb
1.87 Kb
rbcS Terminator
0.49 Kb
Further details
Notes regarding the genetic elements introduced or modified in this LMO
The sequence of the Cry1Ab is  derived from the kurstaki HD1 lineage of Bacillus thuringiensis. The gene is modified for optimal expression in plants by removing a polyadenelation signal, increasing the AT content and removing destabilising sequences.

The NptII gene (971 bp) is under the control of an unknown promoter (531bp) and terminator (138 bp) originating from Subterranean clover stunt virus. The expression cassette also contains an intron from the Catalase I gene from Ricinus communis which reduces the expression of the gene in bacteria.

LMO characteristics
Modified traits
Common use(s)
  • Food
  • Feed

Records referencing this document (4)
4record(s) found
Country's Decision or any other Communication2 records
Risk Assessment2 records