Document Detail

Inheritance of Transgenes in Transgenic Bt Lines Resistance to Helicoerpa armigera in Upland Cotton.
MedLine Citation:
PMID:  23143492     Owner:  NLM     Status:  In-Data-Review    
Six transgenic Bt cotton cultivars (lines) including GKsu12, GK19, MR1, GK5, 109B, and SGK1 are highly resistant to bollworm from the seedling to boll-setting stages in bioassays with detached cotton leaves, though there are differences in resistant level and Bt toxin content in these transgenic cottons. Genetics analysis reveals that the resistance to Helicoverpa armigera in these six transgenic Bt cotton cultivars (lines) are controlled by one pair of dominant genes. Allelic tests further demonstrate some populations are in Mendel segregation for two nonallelic genes, i.e., the inserted Bt gene in GKsu12 is nonallelic to that of SGK1, GK5, 109B, and GK19 and Bt genes in GK19 and SGK1 are likely inserted in the same or in close proximity (genetically closely linked), while some F(2) produce abnormal segregation patterns, with a segregation of resistance to Helicoerpa armigera vary between 15:1 and 3:1, though their Bt segregation fit into 15:1 by PCR analysis, suggesting Bt gene silence in these populations. Two genes silence may occur in these populations due to the homologous sequence by crossing since the silenced individuals accounted for 1/16 of the F(2) populations for allelic test. To those silenced populations, one of their parents all showed high resistance to bollworm.
Baolong Zhang; Wangzhen Guo; Tianzhen Zhang
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Methods in molecular biology (Clifton, N.J.)     Volume:  958     ISSN:  1940-6029     ISO Abbreviation:  Methods Mol. Biol.     Publication Date:  2013  
Date Detail:
Created Date:  2012-11-12     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9214969     Medline TA:  Methods Mol Biol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  165-76     Citation Subset:  IM    
National Key Laboratory of Crop Genetics and Germplasm Enhancement, Cotton Research Institute, Nanjing Agricultural University, Nanjing, People's Republic of China.
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