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Genes 2011, 2(4), 957-979; doi:10.3390/genes2040957
Article

Type Three Secretion System in Pseudomonas savastanoi Pathovars: Does Timing Matter?

1,* , 1, 1, 2,† and 3
Received: 1 September 2011; in revised form: 3 November 2011 / Accepted: 4 November 2011 / Published: 25 November 2011
(This article belongs to the Special Issue Genes and Genomes of Plant Pathogenic Bacteria)
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Abstract: Pseudomonas savastanoi pv. savastanoi is the causal agent of Olive knot disease, relying on the Type Three Secretion System (TTSS) for its pathogenicity. In this regard, nothing was known about the two other pathovars belonging to this species, pv. nerii and pv. fraxini, characterized by a different host range. Here we report on the organization of the entire TTSS cluster on the three pathovars, and a phylogenetic analysis including the TTSS of those bacteria belonging to the P. syringae complex sequenced so far, highlighting the evolution of each operon (hrpC, hrpJ, hrpRS, hrpU and hrpZ). Moreover, by Real-Time PCR we analyzed the in vitro expression of four main TTSS genes, revealing different activation patterns in the three pathovars, hypothetically related to their diverse virulence behaviors.
Keywords: Type Three Secretion System; hrp; Pseudomonas syringae; Pseudomonas savastanoi; evolution; recombination; gene expression; regulation Type Three Secretion System; hrp; Pseudomonas syringae; Pseudomonas savastanoi; evolution; recombination; gene expression; regulation
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Tegli, S.; Gori, A.; Cerboneschi, M.; Cipriani, M.G.; Sisto, A. Type Three Secretion System in Pseudomonas savastanoi Pathovars: Does Timing Matter? Genes 2011, 2, 957-979.

AMA Style

Tegli S, Gori A, Cerboneschi M, Cipriani MG, Sisto A. Type Three Secretion System in Pseudomonas savastanoi Pathovars: Does Timing Matter? Genes. 2011; 2(4):957-979.

Chicago/Turabian Style

Tegli, Stefania; Gori, Andrea; Cerboneschi, Matteo; Cipriani, Maria Grazia; Sisto, Angelo. 2011. "Type Three Secretion System in Pseudomonas savastanoi Pathovars: Does Timing Matter?" Genes 2, no. 4: 957-979.


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