- Information
- Symbol: Xa1
- MSU: LOC_Os04g53120
- RAPdb: None
- Publication
- Identification of a YAC clone carrying the Xa-1 allele, a bacterial blight resistance gene in rice, 1996, Theor Appl Genet.
- Expression of Xa1, a bacterial blight-resistance gene in rice, is induced by bacterial inoculation, 1998, Proc Natl Acad Sci U S A.
- Interfering TAL effectors of Xanthomonas oryzae neutralize R-gene-mediated plant disease resistance., 2016, Nat Commun.
- Multiple Alleles Encoding Atypical NLRs with Unique Central Tandem Repeats in Rice Confer Resistance to Xanthomonas oryzae pv. oryzae, 2020, Plant Commun.
- Xa1 Allelic R Genes Activate Rice Blight Resistance Suppressed by Interfering TAL Effectors, 2020, Plant Commun.
- Rapid genotyping of bacterial leaf blight resistant genes of rice using loop-mediated isothermal amplification assay, 2021, Mol Biol Rep.
- Genbank accession number
- Key message
- Expression of Xa1, a bacterial blight-resistance gene in rice, is induced by bacterial inoculation
- The deduced amino acid sequence of the Xa1 gene product contains nucleotide binding sites (NBS) and a new type of leucine-rich repeats (LRR); thus, Xa1 is a member of the NBS-LRR class of plant disease-resistance genes, but quite different from Xa21, another BB-resistance gene isolated from rice
- However, the iTALEs present in many isolates interfere with the otherwise broad-spectrum resistance conferred by Xa1
- Although Xa1-2 and Xa14 conferred different resistance spectra, their performance could be attenuated by iTALEs, as has previously been reported for Xa1
- Here, we report the isolation of three new bacterial blight R genes in rice, Xa1-2, Xa14, and Xa31(t), which were allelic to Xa1 and encoded atypical NLRs with unique central tandem repeats (CTRs)
- Xa1 Allelic R Genes Activate Rice Blight Resistance Suppressed by Interfering TAL Effectors
- One mechanism involves the nucleotide-binding leucine-rich repeat (NLR) resistance gene Xa1 and TALEs
- Reciprocally, Xoo has evolved TALE variants, C-terminally truncated versions (interfering TALEs or iTALEs), to overcome Xa1 resistance
- On the other hand, iTALEs could suppress the resistance mediated by Xa1 allelic R genes, and iTALE genes were prevalent (
95%) in Asian, but not in African Xoo strains - Our findings demonstrate the prominence of a defense mechanism in which rice depends on Xa1 alleles and a counteracting mechanism in which Xoo relies on iTALEs for BB
- Connection
- RGAf, Xa1, Multiple Alleles Encoding Atypical NLRs with Unique Central Tandem Repeats in Rice Confer Resistance to Xanthomonas oryzae pv. oryzae, XA1, XA1-2, XA14, and non-resistant RGAF differed mainly in the substructure of the leucine-rich repeat domain
- Xa1, XA10, Rapid genotyping of bacterial leaf blight resistant genes of rice using loop-mediated isothermal amplification assay, , Xa1, Xa3, Xa4, Xa7, Xa10, Xa11, and Xa21 in rice
- Xa1, xa21, Rapid genotyping of bacterial leaf blight resistant genes of rice using loop-mediated isothermal amplification assay, , Xa1, Xa3, Xa4, Xa7, Xa10, Xa11, and Xa21 in rice
- Xa1, Xa26~Xa3, Rapid genotyping of bacterial leaf blight resistant genes of rice using loop-mediated isothermal amplification assay, , Xa1, Xa3, Xa4, Xa7, Xa10, Xa11, and Xa21 in rice
- Xa1, Xa4, Rapid genotyping of bacterial leaf blight resistant genes of rice using loop-mediated isothermal amplification assay, , Xa1, Xa3, Xa4, Xa7, Xa10, Xa11, and Xa21 in rice
- OsWRKY6, Xa1, The OsWRKY6 transcriptional cascade functions in basal defense and Xa1-mediated defense of rice against Xanthomonas oryzae pv. oryzae., Here, we characterized a transcriptional cascade triggered by OsWRKY6 that regulated defense against Xoo infection mediated by the NBS-LRR protein Xa1
- OsRap2.6~OsERF101, Xa1, The rice OsERF101 transcription factor regulates the NLR Xa1-mediated immunity induced by perception of TAL effectors., Molecular complementation assays were used to confirm the interactions among Xa1, OsERF101 and two TAL effectors
- OsRap2.6~OsERF101, Xa1, The rice OsERF101 transcription factor regulates the NLR Xa1-mediated immunity induced by perception of TAL effectors., Xa1 interacts in the nucleus with the TAL effectors and OsERF101 via the BED domain
- OsRap2.6~OsERF101, Xa1, The rice OsERF101 transcription factor regulates the NLR Xa1-mediated immunity induced by perception of TAL effectors., Our results indicate that OsERF101 regulates the recognition of TAL effectors by Xa1, and functions as a positive regulator of Xa1-mediated immunity
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