A gene of antimicrobial peptide cecropin P1 (CP1) was inserted into the vector plasmid pPCV91 under the control of promoter 35S RNA of cauliflower mosaic virus (CaMV 35S) containing four enhancer sequences CaMV 35S and nontranslated leader sequence Ω RNA of tobacco mosaic virus. The recombinant vector obtained was used for agrobacterial transformation of tobacco plants (Nicotiana tabacum L., variety Samsun) with the polymerase chain reaction (PCR)-based method. The presence of gene CP1 in the genome of plants was proven by western-blot analysis and testing the antibiotic activity of plant extracts. In different plant lines, the level of cecropin P1 synthesis amounted 0.02–0.2% of total soluble plant leaf protein. The transgenic plants, unlike the control ones, displayed enhanced tolerance to phytopathogenic microorganisms and oxidative stress. It was established that the ability of the transgenic plants to express cecropin P1 is transmitted to progeny.
Russian Journal of Plant Physiology – Springer Journals
Published: Jun 17, 2015
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