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bacteria:t3e:xopaa

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bacteria:t3e:xopaa [2023/12/07 11:53] – [XopAA] rkoebnikbacteria:t3e:xopaa [2025/02/12 23:09] (current) – jfpothier
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-====== XopAA ======+====== 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]]
-Internal reviewer:\\ +
-Expert reviewer: **WANTED!**+
  
 Class: XopAA\\ Class: XopAA\\
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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).
 === Phenotypes === === Phenotypes ===
  
-Unknown.+Transgenic rice plants expressing XopAA//<sub>Xoo</sub>// exhibited semi-dwarfism and a reduction in Brassinolide-dependent laminar inclination, characteristics of brassinosteroid (BR)-insensitive mutants caused by mutations of the BR receptor (Yamaguchi //et al.//, 2013).
  
 +Rice plants inoculated with a T3SS-deficient //hrpX// mutant of //X. oryzae// pv. //oryzae// (//Xoo//) did not develop disease lesions. In contrast, a transgenic rice line overexpressing //xopAA// showed severe lesions when inoculated with the //Xoo// //hrpX// mutant and the bacterial population of the //hrpX// mutant was 100-fold higher in the transgenic plants than in wild-type plants. This observation led the authors conclude that XopAA<sub>//Xoo//</sub> inhibits resistance to //Xoo//, which was probably caused by suppression of host PTI (Yamaguchi //et al.//, 2013). However, a //xopAA// knock-out strain of //Xoo// did not exhibit any defect in virulence (Yamaguchi //et al.//, 2013).
 +
 +Expression of XopAA<sub>//Xoo//</sub> in //Arabidopsis// cells activated host immune responses, suggesting the presence of intracellular immune receptors that recognize XopAA (Yamaguchi //et al.//, 2013).
 +
 +//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).
 === Localization === === Localization ===
  
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 === Interaction partners === === Interaction partners ===
  
-Unknown.+A yeast two-hybrid experiment indicated that XopAA<sub>//Xoo//</sub> interacted with OsBAK1, an essential component of both microbe-associated molecular patterns (MAMPs) and BR receptors, suggesting that the virulent activity of XopAA is mediated by inhibition of OsBAK1 (Yamaguchi //et al.//, 2013).
  
 ===== Conservation ===== ===== Conservation =====
bacteria/t3e/xopaa.1701949998.txt.gz · Last modified: 2023/12/07 11:53 by rkoebnik

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