Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 22, Issue 21, Pages -Publisher
MDPI
DOI: 10.3390/ijms222111658
Keywords
Oryza sativa; broad-spectrum resistance; rice blast; bacterial blight; breeding
Funding
- Natural Science Foundation of China [32000103]
- key R&D project of China National Rice Research Institute [CNRRI-2020-04]
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Rice is an important food crop, but its production is threatened by various diseases. Breeding resistant rice varieties, especially those with broad-spectrum disease resistance genes, is an effective method to control pathogens. Researchers have focused on identifying rice broad-spectrum disease resistance genes in recent years, providing new genetic resources for breeding resistant rice varieties.
Rice is one of the most important food crops in the world. However, stable rice production is constrained by various diseases, in particular rice blast, sheath blight, bacterial blight, and virus diseases. Breeding and cultivation of resistant rice varieties is the most effective method to control the infection of pathogens. Exploitation and utilization of the genetic determinants of broad-spectrum resistance represent a desired way to improve the resistance of susceptible rice varieties. Recently, researchers have focused on the identification of rice broad-spectrum disease resistance genes, which include R genes, defense-regulator genes, and quantitative trait loci (QTL) against two or more pathogen species or many isolates of the same pathogen species. The cloning of broad-spectrum disease resistance genes and understanding their underlying mechanisms not only provide new genetic resources for breeding broad-spectrum rice varieties, but also promote the development of new disease resistance breeding strategies, such as editing susceptibility and executor R genes. In this review, the most recent advances in the identification of broad-spectrum disease resistance genes in rice and their application in crop improvement through biotechnology approaches during the past 10 years are summarized.
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