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Transgenic Tobacco Containing The Maize T-Urf13 Gene As A Novel Host For The Maize Pathogen Cochliobolus Heterostrophus Race T.

Abdulkader A. El-Maleh
Omar Al-Mukhtar University, El-Beida, Libya.

Abstract


Maize with Texas male-sterile cytoplasm (cms-T) is highly susceptible to the southern corn leaf blight disease caused by race T of the fungal pathogen Cochliobolus heterostrophus Race T produces a host-specific toxin, BmT-toxin, which binds to the T-urf13 protein of cms-T maize mitochondria, creating pores in the inner mitochondrial membrane. The T-urf14 protein is the product of a gene unique to cms-T maize mitochondria, T-urf13. The aim of this research project was to investigate the interaction between transgenic tobacco plants containing the T-urf13 gene and C. heterostrophus race T, and in particular to determine whether making tobacco sensitive to BmT-Toxin would cause it to become a novel host for this pathogen.


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