Research progress on the wheat powdery mildew resistance gene <i>Pm2</i><italic/>

JIN Yuli; GU Tiantian; LIU Hong; AN Diaoguo

doi:10.13930/j.cnki.cjea.210279

Volume 30 Issue 5

May 2022

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Article Navigation > Chinese Journal of Eco-Agriculture > 2022 > 30(5): 779-786

JIN Y L, GU T T, LIU H, AN D G. Research progress on the wheat powdery mildew resistance gene Pm2[J]. Chinese Journal of Eco-Agriculture, 2022, 30(5): 779−786 doi: 10.13930/j.cnki.cjea.210279

Citation:

JIN Y L, GU T T, LIU H, AN D G. Research progress on the wheat powdery mildew resistance gene Pm2[J]. Chinese Journal of Eco-Agriculture, 2022, 30(5): 779−786 doi: 10.13930/j.cnki.cjea.210279

JIN Y L, GU T T, LIU H, AN D G. Research progress on the wheat powdery mildew resistance gene Pm2[J]. Chinese Journal of Eco-Agriculture, 2022, 30(5): 779−786 doi: 10.13930/j.cnki.cjea.210279

Citation:

JIN Y L, GU T T, LIU H, AN D G. Research progress on the wheat powdery mildew resistance gene Pm2[J]. Chinese Journal of Eco-Agriculture, 2022, 30(5): 779−786 doi: 10.13930/j.cnki.cjea.210279

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Research progress on the wheat powdery mildew resistance gene Pm2

doi: 10.13930/j.cnki.cjea.210279

Center for Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang 050022, China

Funds: This research was supported by the Strategic Priority Research Program of the Chinese Academy of Sciences (XDA24030102), the National Key Research and Development Program of China (2016YFD0100102) and the National Natural Science Foundation of China (31671771, 31501388)

More Information

Corresponding author: E-mail: andiaoguo@163.com
Received Date: 2021-05-08
Accepted Date: 2021-06-25

Available Online: 2021-08-12

Publish Date: 2022-05-18

Abstract

Abstract

Wheat (Triticum aestivum L.) is an important crop in China, high and stable yields are crucial for ensuring food security. Powdery mildew caused by Blumeria graminis f. sp. tritici. (Bgt) is a devastating disease of wheat. Chemical and agricultural control methods are used to prevent powdery mildew, but utilizing host resistance may represent a more economical, environmentally friendly, and effective method to control the epidemic of powdery mildew. The powdery mildew resistance gene Pm2, located on the short arm of chromosome 5D, encodes a CC-NBS-LRR protein and is one of the most widely used Pm genes in wheat powdery mildew resistance breeding because of its excellent resistance and desirable agronomic traits. In this review, the recent progress in Pm2 research and utilization in wheat breeding is systematically summarized in terms of the following aspects: identification and characterization of Pm2, exploration and utilization of the alleles at the Pm2 locus, gene cloning, development of functional markers, haplotype analysis, AvrPm2 gene cloning, and the applications in wheat breeding programs. It has been proposed that: 1) the differences in the resistance of different Pm2 alleles may be caused by diverse genetic backgrounds, other regulatory factors in the disease resistance pathway, or the highly heterozygous state of Bgt isolates. 2) The powdery mildew resistance gene Pm2 should be reasonably distributed and utilized in disease resistance breeding to prolong the service life of disease resistance genes and increase durability. 3) Essential methods to control the epidemic of powdery mildew should include mining and utilizing novel resistance genes and allelic variations and strengthening the innovation of new wheat germplasms. This review aimed to provide a theoretical basis for further work on the resistance mechanism of Pm2 and to accelerate its application in wheat powdery mildew resistance breeding.
- Wheat powdery mildew,
- Pm2,
- Mapping,
- Gene clone,
- Functional markers,
- Avirulence gene

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References(54)

References

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