Improvement of resistance to plant pathogens and pests by DNA technology

摘要

To improve crop yield, DNA technology has been used to enhance plant resistance toward pathogens and pests. Genes identified through understanding of host-pathogen interactions in viral, bacterial and fungal diseases, the mechanism of hypersensitivereaction in Arabidopsin and inwct toxicity of natural peptides are used for their expression in plants. Progress on the use of simple sequence repeats (SSE.) markers for resistance gene identification, development of virus-specific antibody gene expression in plants for virus control, construction of genes for maiti-pathcgfn resistance, and use of viral vectors for gene efficiency evaluation are discussed.