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- W2114866570 abstract "ABSTRACT The decapeptide killer peptide (KP) derived from the sequence of a single-chain, anti-idiotypic antibody acting as a functional internal image of a microbicidal, broad-spectrum yeast killer toxin (KT) was shown to exert a strong microbicidal activity against human pathogens. With the aim to exploit this peptide to confer resistance to plant pathogens, we assayed its antimicrobial activity against a broad spectrum of phytopathogenic bacteria and fungi. Synthetic KP exhibited antimicrobial activity in vitro towards Pseudomonas syringae , Erwinia carotovora , Botrytis cinerea , and Fusarium oxysporum . KP was also expressed in plants by using a Potato virus X (PVX)-derived vector as a fusion to the viral coat protein, yielding chimeric virus particles (CVPs) displaying the heterologous peptide. Purified CVPs showed enhanced antimicrobial activity against the above-mentioned plant pathogens and human pathogens such as Staphylococcus aureus and Candida albicans . Moreover, in vivo assays designed to challenge KP-expressing plants (as CVPs) with Pseudomonas syringae pv. tabaci showed enhanced resistance to bacterial attack. The results indicate that the PVX-based display system is a high-yield, rapid, and efficient method to produce and evaluate antimicrobial peptides in plants, representing a milestone for the large-scale production of high-added-value peptides through molecular farming. Moreover, KP is a promising molecule to be stably engineered in plants to confer broad-spectrum resistance to phytopathogens." @default.
- W2114866570 created "2016-06-24" @default.
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- W2114866570 date "2005-10-01" @default.
- W2114866570 modified "2023-10-01" @default.
- W2114866570 title "Production of an Engineered Killer Peptide in<i>Nicotiana benthamiana</i>by Using a<i>Potato virus X</i>Expression System" @default.
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- W2114866570 doi "https://doi.org/10.1128/aem.71.10.6360-6367.2005" @default.
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