ArticlePloS one2015
Nucleotide diversity analysis of three major bacterial blight resistance genes in rice.
Article in PloS one, 2015. 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.
- Molecular and phenotypic diversity of bacterial leaf blight resistance in green super rice germplasm.BMC plant biology · 2026Article
- Efficient Marker-Assisted Pyramiding ofPlants (Basel, Switzerland) · 2025Article
- The Roles of MicroRNAs in the Regulation of Rice-Pathogen Interactions.Plants (Basel, Switzerland) · 2025Review
- Establishment of Functional PCR-Based Markers against Bacterial Leaf Blight Disease in Rice Landraces of Yunnan Province of China.Life (Basel, Switzerland) · 2023Article
- Research Progress on Cloning and Function ofFrontiers in plant science · 2022Review
- Deployment of Genetic and Genomic Tools Toward Gaining a Better Understanding of Rice-Frontiers in plant science · 2020Review
- Phosphorylation-guarded light-harvesting complex II contributes to broad-spectrum blast resistance in rice.Proceedings of the National Academy of Sciences of the United States of America · 2019Article
- Rice Improvement Through Genome-Based Functional Analysis and Molecular Breeding in India.Rice (New York, N.Y.) · 2016Article
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Authors and funding
7 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Nucleotide sequence polymorphisms among R gene alleles influence the process of co-evolutionary interaction between host and pathogen by shaping the response of host plants towards invading pathogens. Here, we present the DNA sequence polymorphisms and diversities present among natural alleles of three rice bacterial blight resistance genes, Xa21, Xa26 and xa5. The diversity was examined across different wild relatives and cultivars of Oryza species. Functional significance of selected alleles was evaluated through semi-quantitative reverse transcription polymerase chain reaction and real time PCR. The greatest nucleotide diversity and singleton variable sites (SVS) were present in Xa26 (π = 0.01958; SVS = 182) followed by xa5 and Xa21 alleles. The highest frequency of single nucleotide polymorphisms were observed in Xa21 alleles and least in xa5. Transition bias was observed in all the genes and 'G' to 'A' transitions were more favored than other form of transitions. Neutrality tests failed to show the presence of selection at these loci, though negative Tajima's D values indicate the presence of a rare form of polymorphisms. At the interspecies level, O. nivara exhibited more diversity than O. sativa. We have also identified two nearly identical resistant alleles of xa5 and two sequentially identical alleles of Xa21. The alleles of xa5 showed basal levels of expression while Xa21 alleles were functionally not expressed.
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