plant tissue culture & genetics

Plant viruses are wide spread and economically important plant pathogens. The morphology, genome structure, reproduction strategy of different types of plant viruses, which together form the basis of virus classification. Plant viruses consist of a nucleoprotein in that multiplies only in the living cells of a host .The presence of viruses in host cells often results in disease, 400 or more viruses are known to attack plants. Viruses are generally specific, what infects aqueous plant does not cause disease in animal.