Wheat powdery mildew resistance: from gene identification to immunity deployment

Frontiers in Plant Science

Plant Science

Yang Xu¹  Qianqian Li¹  Yali Wei¹  Shenghao Zou¹  Youlian Zhang¹  Dingzhong Tang¹ 

[1] State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests, Key Laboratory of Ministry of Education for Genetics, Breeding and Multiple Utilization of Crops, Plant Immunity Center, Fujian Agriculture and Forestry University, Fuzhou, China;

关键词: powdery mildew;    Blumeria graminis;    wheat;    NLR;    race-specific resistance;   

DOI  :  10.3389/fpls.2023.1269498

 received in 2023-07-30, accepted in 2023-09-01,  发布年份 2023

来源: Frontiers

【 摘 要 】

Powdery mildew is one of the most devastating diseases on wheat and is caused by the obligate biotrophic phytopathogen Blumeria graminis f. sp. tritici (Bgt). Due to the complexity of the large genome of wheat and its close relatives, the identification of powdery mildew resistance genes had been hampered for a long time until recent progress in large-scale sequencing, genomics, and rapid gene isolation techniques. Here, we describe and summarize the current advances in wheat powdery mildew resistance, emphasizing the most recent discoveries about the identification of genes conferring powdery mildew resistance and the similarity, diversity and molecular function of those genes. Multilayered resistance to powdery mildew in wheat could be used for counteracting Bgt, including durable, broad spectrum but partial resistance, as well as race-specific and mostly complete resistance mediated by nucleotide-binding and leucine rich repeat domain (NLR) proteins. In addition to the above mentioned layers, manipulation of susceptibility (S) and negative regulator genes may represent another layer that can be used for durable and broad-spectrum resistance in wheat. We propose that it is promising to develop effective and durable strategies to combat powdery mildew in wheat by simultaneous deployment of multilayered immunity.

【 授权许可】

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Copyright © 2023 Zou, Xu, Li, Wei, Zhang and Tang