ArticleJournal of bacteriology1997
The hrpA and hrpC operons of Erwinia amylovora encode components of a type III pathway that secretes harpin.
Article in Journal of bacteriology, 1997. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.
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Who cites it
26 citing papers in PubMed, 81 citations in OpenAlex.
- A CRISPR-Cas13a-Based Amplification- and Extraction-Free Fire Blight Diagnostic System.The plant pathology journal · 2026Article
- Copper-induced stress mechanisms inApplied and environmental microbiology · 2025Article
- The Harpin-Induced Hypersensitive Reaction in Nicotiana tabacum Requires Wall-Associated Kinase 2.Molecular plant pathology · 2025Article
- Functional validation of putative PIP-box promoters of Xanthomonas citri subsp. citri using GFP as a reporter.Molecular biology reports · 2025Article
- Progress of Antimicrobial Mechanisms of Stilbenoids.Pharmaceutics · 2024Review
- Putative transcription antiterminator RfaH contributes to Erwinia amylovora virulence.Molecular plant pathology · 2022Article
- Orchestration of virulence factor expression and modulation of biofilm dispersal in Erwinia amylovora through activation of the Hfq-dependent small RNA RprA.Molecular plant pathology · 2021Article
- Article
- Conservation of Erwinia amylovora pathogenicity-relevant genes among Erwinia genomes.Archives of microbiology · 2017Article
- Role of electron transport chain of chloroplasts in oxidative burst of interaction between Erwinia amylovora and host cells.Photosynthesis research · 2015Article
- Mutation of the Erwinia amylovora argD gene causes arginine auxotrophy, nonpathogenicity in apples, and reduced virulence in pears.Applied and environmental microbiology · 2014Article
- The fire blight pathogen Erwinia amylovora requires the rpoN gene for pathogenicity in apple.Molecular plant pathology · 2013Article
- Discovery of plant phenolic compounds that act as type III secretion system inhibitors or inducers of the fire blight pathogen, Erwinia amylovora.Applied and environmental microbiology · 2013Article
- The type III secretion system is necessary for the development of a pathogenic and endophytic interaction between Herbaspirillum rubrisubalbicans and Poaceae.BMC microbiology · 2012Article
- Erwinia amylovora expresses fast and simultaneously hrp/dsp virulence genes during flower infection on apple trees.PloS one · 2012Article
- PopW of Ralstonia solanacearum, a new two-domain harpin targeting the plant cell wall.Molecular plant pathology · 2010Article
- Alternative sigma factors and their roles in bacterial virulence.Microbiology and molecular biology reviews : MMBR · 2005Review
- Characterization of the hrp pathogenicity cluster of Erwinia carotovora subsp. carotovora: high basal level expression in a mutant is associated with reduced virulence.Molecular genetics and genomics : MGG · 2003Article
- The gene coding for the Hrp pilus structural protein is required for type III secretion of Hrp and Avr proteins in Pseudomonas syringae pv. tomato.Proceedings of the National Academy of Sciences of the United States of America · 2000Article
- HrpW of Erwinia amylovora, a new harpin that contains a domain homologous to pectate lyases of a distinct class.Journal of bacteriology · 1998Article
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
A 6.2-kb region of DNA corresponding to complementation groups II and III of the Erwinia amylovora hrp gene cluster was analyzed. Transposon mutagenesis indicated that the two complementation groups are required for secretion of harpin, an elicitor of the hypersensitive reaction. The sequence of the region revealed 10 open reading frames in two putative transcription units: hrpA, hrpB, hrcJ, hrpD, and hrpE in the hrpA operon (group III) and hrpF, hrpG, hrcC, hrpT, and hrpV in the hrpC operon (group II). From promoter regions of the hrpA, hrpC, and hrpN operons, sequences similar to those of the HrpL-dependent promoters of Pseudomonas syringae pathovars were identified with a consensus sequence of 5'-GGAAC-N17-18-CACTNAA-3'. The protein products of seven genes, hrpA, hrcJ, hrpE, hrpF, hrpG, hrcC, and hrpV, were visualized with a T7 polymerase/promoter expression system. HrcC, HrcJ, and HrpT sequences contained potential signal peptides, and HrcC appeared to be envelope associated based on a TnphoA translational fusion. Comparison of deduced amino acid sequences indicated that many of the proteins are homologous to proteins that function in the type III protein secretion pathway. HrcC is a member of the YscC-containing subgroup in the PulD/pIV superfamily of outer membrane proteins. HrcJ is a member of a lipoprotein family that includes YscJ of Yersinia spp., MxiJ of Shigella flexneri, and NolT of Rhizobim fredii. Additional similarities were detected between HrpB and YscI and between HrpE and YscL. HrcJ and HrpE were similar to flagellar biogenesis proteins FliF and FliH, respectively. In addition, HrpA, HrpB, HrcJ, HrpD, HrpE, HrpF, and HrcC showed various degrees of similarity to corresponding proteins of P. syringae. Comparison of hrp clusters with respect to gene organization and similarity of individual proteins confirms that the hrp systems of E. amylovora and P. syringae are closely related to each other and distinct from those of Ralstonia (Pseudomonas) solanacearum and Xanthomonas campestris. Possible implications of extensive similarities between the E. amylovora and P. syringae hrp systems in pathogenesis mechanisms are discussed.
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