ArticleScientific reports2018
HrpE, the major component of the Xanthomonas type three protein secretion pilus, elicits plant immunity responses.
Article in Scientific reports, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed, 25 citations in OpenAlex.
- Transient expression of anti-HrpE scFv antibody reduces the hypersensitive response in non-host plant against bacterial phytopathogen Xanthomonas citri subsp. citri.Scientific reports · 2024Article
- Sulforaphane, a secondary metabolite in crucifers, inhibits the oxidative stress adaptation and virulence of Xanthomonas by directly targeting OxyR.Molecular plant pathology · 2022Article
- EssentialInternational journal of molecular sciences · 2022Article
- Genomic and Phenotypic Biology of Novel Strains ofFrontiers in plant science · 2021Article
- Proteome Analysis of Walnut Bacterial Blight Disease.International journal of molecular sciences · 2020Article
- LsGRP1, a class II glycine-rich protein of Lilium, confers plant resistance via mediating innate immune activation and inducing fungal programmed cell death.Molecular plant pathology · 2020Article
- The Type III Accessory Protein HrpE ofMicroorganisms · 2019Article
- Discovery of Ethyl 2-Nitro-3-Arylacrylates Molecules as T3SS Inhibitor Reducing the Virulence of Plant Pathogenic BacteriaFrontiers in microbiology · 2019Article
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Like several pathogenic bacteria, Xanthomonas infect host plants through the secretion of effector proteins by the Hrp pilus of the Type Three Protein Secretion System (T3SS). HrpE protein was identified as the major structural component of this pilus. Here, using the Xanthomonas citri subsp. citri (Xcc) HrpE as a model, a novel role for this protein as an elicitor of plant defense responses was found. HrpE triggers defense responses in host and non-host plants revealed by the development of plant lesions, callose deposition, hydrogen peroxide production and increase in the expression levels of genes related to plant defense responses. Moreover, pre-infiltration of citrus or tomato leaves with HrpE impairs later Xanthomonas infections. Particularly, HrpE C-terminal region, conserved among Xanthomonas species, was sufficient to elicit these responses. HrpE was able to interact with plant Glycine-Rich Proteins from citrus (CsGRP) and Arabidopsis (AtGRP-3). Moreover, an Arabidopsis atgrp-3 knockout mutant lost the capacity to respond to HrpE. This work demonstrate that plants can recognize the conserved C-terminal region of the T3SS pilus HrpE protein as a danger signal to defend themselves against Xanthomonas, triggering defense responses that may be mediated by GRPs.
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