The rice immune receptor XA21 recognizes a tyrosine-sulfated protein from a Gram-negative bacterium
The identification of a previously undescribed Xoo protein, called RaxX, is reported, which is required for activation of XA21-mediated immunity, and can be applied to the development of resistant crop varieties and therapeutic reagents that have the potential to block microbial infection of both plants and animals.
Type IV Pili are required for virulence, twitching motility, and biofilm formation of acidovorax avenae subsp. Citrulli.
The identification of a Tn5 mutant with reduced virulence that is impaired in pilM, which encodes a protein involved in assembly of type IV pili (TFP), and the first evidence that group I strains of A. avenae subsp.
The Xanthomonas Ax21 protein is processed by the general secretory system and is secreted in association with outer membrane vesicles
It is shown that Ax21 secretion does not depend on the predicted type I secretion system and that it is processed by the general secretion (Sec) system, and that ax21 is an outer membrane protein, secreted in association with outer membrane vesicles.
Assessing adhesion, biofilm formation and motility of Acidovorax citrulli using microfluidic flow chambers.
Comparison studies between wild-type and TFP mutant strains using microfluidic flow chambers demonstrated that TFP play a critical role in both the surface attachment and the biofilm formation of A. citrulli under a medium flow, and polar flagella could be more important for spread during periods of time when xylem flow is minimal.
Involvement of Type IV Pili in Pathogenicity of Plant Pathogenic Bacteria
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.
Bacterial fruit blotch of melon: screens for disease tolerance and role of seed transmission in pathogenicity
The level of tolerance to bacterial fruit blotch of various commercial cultivars as well as breeding and wild lines of melon, using seed-transmission assays and seedling-inoculation experiments is assessed.
Biosynthesis and secretion of the microbial sulfated peptide RaxX and binding to the rice XA21 immune receptor
- D. D. Luu, Anna Joe, P. Ronald
- Biology, ChemistryProceedings of the National Academy of Sciences
- 4 April 2019
The biosynthesis, processing, and secretion of a peptide activator that binds a rice immune receptor and indicates that RaxX is a prokaryotic member of a previously unclassified and understudied group of eukaryotic tyrosine sulfated ribosomally synthesized, posttranslationally modified peptides (RiPPs).
Bacterial Outer Membrane Vesicles Induce Plant Immune Responses.
It is demonstrated that plants can detect and respond to OMV-associated molecules by activation of their immune system, revealing a new facet of plant-bacterial interactions.
Transgenic expression of the rice Xa21 pattern-recognition receptor in banana (Musa sp.) confers resistance to Xanthomonas campestris pv. musacearum.
- Jaindra Nath Tripathi, J. Lorenzen, O. Bahar, P. Ronald, L. Tripathi
- Biology, MedicinePlant Biotechnology Journal
- 1 August 2014
Results indicate that the constitutive expression of the rice Xa21 gene in banana results in enhanced resistance against Xcm, and demonstrates the feasibility of PRR gene transfer between monocotyledonous species and provides a valuable new tool for controlling the BXW pandemic of banana.
Transgenic Expression of the Dicotyledonous Pattern Recognition Receptor EFR in Rice Leads to Ligand-Dependent Activation of Defense Responses
The successful transfer of an immune receptor from a species in the mustard family, called EFR, to rice is shown, and under laboratory conditions, this leads to an enhanced resistance response to two weakly virulent isolates of an economically important bacterial disease of rice.