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Allelic variation in rice blast resistance: a pathway to sustainable disease management
Tuesday, 2024/09/10 | 08:18:58

Muhammad Usama YounasMuhammad QasimIrshad AhmadZhiming FengRashid IqbalAshraf M M AbdelbackiNimra RajputXiaohong JiangBisma RaoShimin Zuo

 

Mol Biol Rep.; 2024 Aug 24; 51(1):935. doi: 10.1007/s11033-024-09854-2.

Abstract

Rice blast is a major problem in agriculture, affecting rice production and threatening food security worldwide. This disease, caused by the fungus Magnaporthe oryzae, has led to a lot of research since the discovery of the first resistance gene, pib, in 1999. Researchers have now identified more than 50 resistance genes on eight of the twelve chromosomes in rice, each targeting different strains of the pathogen.These genes are spread out across seventeen different loci. These genes, which primarily code for nucleotide-binding and leucine-rich repeat proteins, play an important part in the defense of rice against the pathogen, either alone or in combination with other genes. An important characteristic of these genes is the allelic or paralogous interactions that exist within these loci. These relationships contribute to the gene's increased capacity for evolutionary adaptation. The ability of resistance proteins to recognize and react to novel effectors is improved by the frequent occurrence of variations within the domains that are responsible for recognizing pathogen effectors. The purpose of this review is to summarize the progress that has been made in identifying these essential genes and to investigate the possibility of utilizing the allelic variants obtained from these genes in future rice breeding efforts to increase resistance to rice blast.

 

See https://pubmed.ncbi.nlm.nih.gov/39180629/

 

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