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bacteria:t3e:xopaa [2025/02/12 23:09] – jfpothierbacteria:t3e:xopaa [2025/07/13 23:57] (current) – jfpothier
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 ====== The Type III Effector XopAA from //Xanthomonas// ====== ====== The Type III Effector XopAA from //Xanthomonas// ======
  
-Author: [[https://www.researchgate.net/profile/Ralf-Koebnik|Ralf Koebnik]]+Author: [[https://www.researchgate.net/profile/Ralf-Koebnik|Ralf Koebnik]]\\
  
 Class: XopAA\\ Class: XopAA\\
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 //Xanthomonas// bacteria carrying a translational fusion of XopAA to the calmodulin-dependent adenylate cyclase Cya produced approximately 30 times more cAMP in tomato leaves at 8 hpi when compared to bacteria with a mutation in the T3SS gene //hrcV// or bacteria that harbour a //recA//://cya// fusion. These results indicated that the //xopAA// gene product is translocated to host cells in a T3SS-dependent manner (Morales //et al.//, 2005). //Xanthomonas// bacteria carrying a translational fusion of XopAA to the calmodulin-dependent adenylate cyclase Cya produced approximately 30 times more cAMP in tomato leaves at 8 hpi when compared to bacteria with a mutation in the T3SS gene //hrcV// or bacteria that harbour a //recA//://cya// fusion. These results indicated that the //xopAA// gene product is translocated to host cells in a T3SS-dependent manner (Morales //et al.//, 2005).
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 === Regulation === === Regulation ===
  
 RT-PCR expression analyses suggested that, although translocation of XopAA is dependent on the Hrp T3SS apparatus, //xopAA// expression does not depend on nutritional conditions that induce //hrp// gene expression in //Xee// (Morales //et al.//, 2005). RT-PCR expression analyses suggested that, although translocation of XopAA is dependent on the Hrp T3SS apparatus, //xopAA// expression does not depend on nutritional conditions that induce //hrp// gene expression in //Xee// (Morales //et al.//, 2005).
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 === Phenotypes === === Phenotypes ===
  
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 //Xanthomonas oryzae// pv. //oryzicola// bacteria with a deletion of //xopAA// were found to cause enhanced virulence to a certain rice cultivar (Li //et al.//, 2015). //Xanthomonas oryzae// pv. //oryzicola// bacteria with a deletion of //xopAA// were found to cause enhanced virulence to a certain rice cultivar (Li //et al.//, 2015).
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 === Localization === === Localization ===
  
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 DNA hybridization experiments had suggested that //xopAA// might be highly specific to //Xee// (Morales //et al//., 2005). However, genomic comparisons showed that xopAA homologs are present in other xanthomonads, such as //X. hortorum//, //X. hydrangeae//, //X. oryzae//, //X. populi//, //X. translucens//, and //X. vasicola//. DNA hybridization experiments had suggested that //xopAA// might be highly specific to //Xee// (Morales //et al//., 2005). However, genomic comparisons showed that xopAA homologs are present in other xanthomonads, such as //X. hortorum//, //X. hydrangeae//, //X. oryzae//, //X. populi//, //X. translucens//, and //X. vasicola//.
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 === In other plant pathogens/symbionts === === In other plant pathogens/symbionts ===
  
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 Yamaguchi K, Nakamura Y, Ishikawa K, Yoshimura Y, Tsuge S, Kawasaki T (2013). Suppression of rice immunity by //Xanthomonas oryzae// type III effector Xoo2875. Biosci. Biotechnol. Biochem. 77: 796-801. DOI: [[https://doi.org/10.1271/bbb.120929|10.1271/bbb.120929]] Yamaguchi K, Nakamura Y, Ishikawa K, Yoshimura Y, Tsuge S, Kawasaki T (2013). Suppression of rice immunity by //Xanthomonas oryzae// type III effector Xoo2875. Biosci. Biotechnol. Biochem. 77: 796-801. DOI: [[https://doi.org/10.1271/bbb.120929|10.1271/bbb.120929]]
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 +===== Acknowledgements =====
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 +This fact sheet is based upon work from COST Action CA16107 EuroXanth, supported by COST (European Cooperation in Science and Technology).
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bacteria/t3e/xopaa.1739401761.txt.gz · Last modified: 2025/02/12 23:09 by jfpothier

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