Two types of vectors are used for the introduction of foreign genes into plant cells. Among them, the Ti-plasmid of Agrobacterium tumefaciens and a few plant viruses such as caulimoviruses and geminiviruses are the most important ones. Vector # 1. Agrobacterium Tumefaciens Ti Plasmids: Plants cells do not contain natural plasmids that can be utilised as cloning vectors. However, the [...]
Exploitation of plant viruses as transformation vectors by massive infection may be harmful and even deleterious to the target plants. It is still however able to express and produce foreign proteins. Plant viruses must exhibit some of the exemplary features before they are considered as vectors. They should extend their broader host-range, spread of seed transmission and carry additional copies [...]
The below mentioned article provides notes on tsetse flies as vectors. Tsetse flies are of paramount importance in Africa because of their role as vectors of trypano some infections of man and domestic animals, which have had a profound effect on the economy and development of that continent (Fig. 15.17). The tsetse flies are elongated dark brown or yellowish-brown flies. [...]