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Involvement of Type IV Pili in Pathogenicity of Plant Pathogenic Bacteria

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Author(s): Saul Burdman | Ofir Bahar | Jennifer K. Parker | Leonardo De La Fuente

Journal: Genes
ISSN 2073-4425

Volume: 2;
Issue: 4;
Start page: 706;
Date: 2011;
Original page

Keywords: type IV pili | twitching | virulence | biofilm

ABSTRACT
Type IV pili (T4P) are hair-like appendages found on the surface of a wide range of bacteria belonging to the β-, γ-, and δ-Proteobacteria, Cyanobacteria and Firmicutes. They constitute an efficient device for a particular type of bacterial surface motility, named twitching, and are involved in several other bacterial activities and functions, including surface adherence, colonization, biofilm formation, genetic material uptake and virulence. Tens of genes are involved in T4P synthesis and regulation, with the majority of them being generally named pil/fim genes. Despite the multiple functionality of T4P and their well-established role in pathogenicity of animal pathogenic bacteria, relatively little attention has been given to the role of T4P in plant pathogenic bacteria. Only in recent years studies have begun to examine with more attention the relevance of these surface appendages for virulence of plant bacterial pathogens. The aim of this review is to summarize the current knowledge about T4P genetic machinery and its role in the interactions between phytopathogenic bacteria and their plant hosts.
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