cre/lox mediated recombination system
TRANSCRIPT
ZEESHAN NADEEMROLL NO. 26
BS. BIOTECHNOLOGY 7THIBB, PU
DEVELOPMENT OFSELECTABLE MARKER FREE,
INSECT-RESISTANT,TRANSGENIC MUSTARD (Brassica
juncea)PLANTS USING
CRE/LOX MEDIATED RECOMBINATION
BY
ARPITA BALA, AMIT ROY, AYAN DAS, DIPANKAR CHAKRABORTI AND SAMPA DAS
INTRODUCTION» Brassica juncea (Indian Mustard) an important crop» Lipaphis erysimi (a sap sucking hemipteran pest)
OBJECTIVES
» Development of Insect resistance by: Expressing Allium sativum leaf agglutinin (ASAL)
gene (replacement of chemical pesticides and cry toxins)
» Removal of Selectable Marker Genes (hpt) by: Using Cre/lox mediated recombinantion
CRE LOX MEDIATED RECOMBINATION
VECTOR CONSTRUCTS
RESULTS…
Southern Blot Analysis of Expression of ASAL and Cre Genes
Multiplex PCR Analysis of Marker Gene Excision
Western Blot Analysis of ASAL Expression in F1 Hybrid Plants
Agglutination and Thermal Stability Assay of Expressed ASAL Protein from F1 Hybrids
In-Planta Insect Bioassay
Insect Bioassay Setup
PCR Analysis of Completely Marker Free F2 Mustard Plants
CONCLUSION
Efficient expression of insect resistant ASAL gene
in Brassica juncea plantseven after the elimination of selectable
marker geneby Cre/lox mediated recombination