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Multiple Alleles Encoding Atypical NLRs with Unique Central Tandem Repeats in Rice Confer Resistance to Xanthomonas oryzaepv. oryzae
- Source :
- Plant Communications; July 2020, Vol. 1 Issue: 4
- Publication Year :
- 2020
-
Abstract
- Plants have developed various mechanisms for avoiding pathogen invasion, including resistance(R) genes. Most Rgenes encode nucleotide-binding domain and leucine-rich repeat containing proteins (NLRs). Here, we report the isolation of three new bacterial blight Rgenes in rice, Xa1-2, Xa14, and Xa31(t), which were allelic to Xa1and encoded atypical NLRs with unique central tandem repeats (CTRs). We also found that Xa31(t) was the same gene as Xa1-2. Although Xa1-2and Xa14conferred different resistance spectra, their performance could be attenuated by iTALEs, as has previously been reported for Xa1. XA1, XA1-2, XA14, and non-resistant RGAF differed mainly in the substructure of the leucine-rich repeat domain. They all contained unique CTRs and belonged to the CTR-NLRs, which existed only in Gramineae. We also found that interactions among these genes led to differing resistance performance. In conclusion, our results uncover a unique locus in rice consisting of at least three multiple alleles (Xa1, Xa1-2, and Xa14) that encode CTR-NLRs and confer resistance to Xanthomonas oryzaepv. oryzae(Xoo).
Details
- Language :
- English
- ISSN :
- 25903462
- Volume :
- 1
- Issue :
- 4
- Database :
- Supplemental Index
- Journal :
- Plant Communications
- Publication Type :
- Periodical
- Accession number :
- ejs53697040
- Full Text :
- https://doi.org/10.1016/j.xplc.2020.100088