ArticleTAG. Theoretical and applied genetics. Theoretische und angewandte Genetik2010
Genomic structure and evolution of the Pi2/9 locus in wild rice species.
Article in TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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Who cites it
13 citing papers in PubMed, 36 citations in OpenAlex.
- A century of advances in molecular genetics and breeding for sustainable resistance to rice blast disease.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2025Review
- Improvement of Rice Blast Resistance in TGMS Line HD9802S through Optimized Anther Culture and Molecular Marker-Assisted Selection.International journal of molecular sciences · 2023Article
- Tightly linked Rps12 and Rps13 genes provide broad-spectrum Phytophthora resistance in soybean.Scientific reports · 2021Article
- Identification of Novel Alleles of the Rice Blast-Resistance Gene Pi9 through Sequence-Based Allele Mining.Rice (New York, N.Y.) · 2020Article
- The Ficus erecta genome aids Ceratocystis canker resistance breeding in common fig (F. carica).The Plant journal : for cell and molecular biology · 2020Article
- Identification of resistant germplasm containing novel resistance genes at or tightly linked to the Pi2/9 locus conferring broad-spectrum resistance against rice blast.Rice (New York, N.Y.) · 2017Article
- Functional divergence of duplicated genes results in a novel blast resistance gene Pi50 at the Pi2/9 locus.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2015Article
- Statistical inference of selection and divergence of the rice blast resistance gene Pi-ta.G3 (Bethesda, Md.) · 2014Article
- Molecular mapping of the Pi2/9 allelic gene Pi2-2 conferring broad-spectrum resistance to Magnaporthe oryzae in the rice cultivar Jefferson.Rice (New York, N.Y.) · 2012Article
- Heterogeneous evolutionary rates of Pi2/9 homologs in rice.BMC genetics · 2012Article
- Dynamic nucleotide-binding site and leucine-rich repeat-encoding genes in the grass family.Plant physiology · 2012Article
- Genome-wide association study of flowering time and grain yield traits in a worldwide collection of rice germplasm.Nature genetics · 2011Article
- Organization and molecular evolution of a disease-resistance gene cluster in coffee trees.BMC genomics · 2011Article
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Authors and funding
12 authors at 6 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Rice blast, caused by the fungal pathogen Magnaporthe oryzae, is a devastating disease of rice worldwide. Among the 85 mapped resistance (R) genes against blast, 13 have been cloned and characterized. However, how these genes originated and how they evolved in the Oryza genus remains unclear. We previously cloned the rice blast R-genes Pi2, Pi9, and Piz-t, and analyzed their genomic structure and evolution in cultivated rice. In this study, we determined the genomic sequences of the Pi2/9 locus in four wild Oryza species representing three genomes (AA, BB and CC). The number of Pi2/9 family members in the four wild species ranges from two copies to 12 copies. Although these genes are conserved in structure and categorized into the same subfamily, sequence duplications and subsequent inversions or uneven crossing overs were observed, suggesting that the locus in different wild species has undergone dynamic changes. Positive selection was found in the leucine-rich repeat region of most members, especially in the largest clade where Pi9 is included. We also provide evidence that the Pi9 gene is more related to its homologues in the recurrent line and other rice cultivars than to those in its alleged donor species O. minuta, indicating a possible origin of the Pi9 gene from O. sativa. Comparative sequence analysis between the four wild Oryza species and the previously established reference sequences in cultivated rice species at the Pi2/9 locus has provided extensive and unique information on the genomic structure and evolution of a complex R-gene cluster in the Oryza genus.
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