ArticleBMC genetics2014
Genetic diversity of the conserved motifs of six bacterial leaf blight resistance genes in a set of rice landraces.
Article in BMC genetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.
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12 citing papers in PubMed, 30 citations in OpenAlex.
- A successful stacking of multiple biotic stress resistance in rice facilitated by genes and precision breeding tools.Biological research · 2026Article
- Divergent molecular pathways govern temperature-dependent wheat stem rust resistance genes.Nature communications · 2025Article
- A high-quality pseudo-phased genome for Melaleuca quinquenervia shows allelic diversity of NLR-type resistance genes.GigaScience · 2022Article
- Show me your ID: NLR immune receptors with integrated domains in plants.Essays in biochemistry · 2022Article
- Article
- Overexpression of OsCM alleviates BLB stress via phytohormonal accumulation and transcriptional modulation of defense-related genes in Oryza sativa.Scientific reports · 2020Article
- Prospects of Understanding the Molecular Biology of Disease Resistance in Rice.International journal of molecular sciences · 2018Review
- Integration of decoy domains derived from protein targets of pathogen effectors into plant immune receptors is widespread.The New phytologist · 2016Article
- Plant Growth Promotion and Suppression of Bacterial Leaf Blight in Rice by Inoculated Bacteria.PloS one · 2016Article
- Secretome analysis of rice suspension-cultured cells infected by Xanthomonas oryzae pv.oryza (Xoo).Proteome science · 2016Article
- Identification and analysis of novel salt responsive candidate gene based SSRs (cgSSRs) from rice (Oryza sativa L.).BMC plant biology · 2015Article
- Genetic diversity analysis in a set of Caricaceae accessions using resistance gene analogues.BMC genetics · 2014Article
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4 authors at 3 institutions in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
backgroundBacterial leaf blight (BLB) caused by the vascular pathogen Xanthomonas oryzae pv. oryzae (Xoo) is one of the most serious diseases leading to crop failure in rice growing countries. A total of 37 resistance genes against Xoo has been identified in rice. Of these, ten BLB resistance genes have been mapped on rice chromosomes, while 6 have been cloned, sequenced and characterized. Diversity analysis at the resistance gene level of this disease is scanty, and the landraces from West Bengal and North Eastern states of India have received little attention so far. The objective of this study was to assess the genetic diversity at conserved domains of 6 BLB resistance genes in a set of 22 rice accessions including landraces and check genotypes collected from the states of Assam, Nagaland, Mizoram and West Bengal.
resultsIn this study 34 pairs of primers were designed from conserved domains of 6 BLB resistance genes; Xa1, xa5, Xa21, Xa21(A1), Xa26 and Xa27. The designed primer pairs were used to generate PCR based polymorphic DNA profiles to detect and elucidate the genetic diversity of the six genes in the 22 diverse rice accessions of known disease phenotype. A total of 140 alleles were identified including 41 rare and 26 null alleles. The average polymorphism information content (PIC) value was 0.56/primer pair. The DNA profiles identified each of the rice landraces unequivocally. The amplified polymorphic DNA bands were used to calculate genetic similarity of the rice landraces in all possible pair combinations. The similarity among the rice accessions ranged from 18% to 89% and the dendrogram produced from the similarity values was divided into 2 major clusters. The conserved domains identified within the sequenced rare alleles include Leucine-Rich Repeat, BED-type zinc finger domain, sugar transferase domain and the domain of the carbohydrate esterase 4 superfamily.
conclusionsThis study revealed high genetic diversity at conserved domains of six BLB resistance genes in a set of 22 rice accessions. The inclusion of more genotypes from remote ecological niches and hotspots holds promise for identification of further genetic diversity at the BLB resistance genes.
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