The Effects of WRKY Genes in the Development of Magnaporthe oryzae-induced Blight in Rice

Authors

  • Jiadi Xu

DOI:

https://doi.org/10.61173/0s24d964

Keywords:

WRKY, blast disease, M oryzae

Abstract

Blast disease induced by Magnaporthe oryzae (M. oryzae) leads to a reduction in rice yield, and a close relationship between the WRKY gene and M. oryzae infection of rice has been found in many studies. However, whether the WRKY gene can be regulated to inhibit M. oryzae from infecting rice is still unclear. Transcriptomic and epigenomic assessments revealed that M. oryzae regulates WRKY genes in rice infection. Overexpression of three OsWRKYs in rice inoculated with M. oryzae strains revealed that OsWRKY47 has an important role to play in M. oryzae resistance.Furthermore, the interaction of OsIMα1a with Os­WRKY62 showed that OsWRKY62.1 plays a negative regulatory role downstream of OsIMα1a in defense against M. oryzae. On the other hand, in rice carrying the Pi9 gene, OsWRKY62 also plays a negative role in de­fense against compatible strains of M. oryzae. Finally, rice disease resistance was enhanced by overexpressing os­wrky6 and oswrky46 to regulate RIXI. This review aims to stimulate further research on WRKY genes to suppress M. oryzae yield damage in rice to assure global hunger and nutritional security.

References

[1] Devanna BN, Jain P, Solanke AU, Das A, Thakur S, Singh PK, Kumari M, Dubey H, Jaswal R, Pawar D, Kapoor R, Singh J, Arora K, Saklani BK, AnilKumar C, Maganti SM, Sonah H, Deshmukh R, Rathour R, Sharma TR. understanding the dynamics of blast resistance in rice-magnaporthe oryzae interactions. Journal of Fungi (Basel), 2022, 8(6): 584.

[2] Xu Y, Miao Y, Tian X, Wang Q, Hu Y, Luo Q. Transcriptomic and Epigenomic Assessment Reveals Epigenetic regulation of WRKY genes in response to magnaporthe oryzae infection in rice. Current Genomics, 2022, 23(3): 182-194.

[3] Bakshi M, Oelmüller R. WRKY transcription factors: jack of many trades in plants. Plant Signaling & Behavior, 2014, 9(2): e27700.

[4] Wei T, Ou B, Li J, Zhao Y, Guo D, Zhu Y, Chen Z, Gu H, Li C, Qin G, Qu LJ. Transcriptional profiling of rice early response to magnaporthe oryzae identified OsWRKYs as important regulators in rice blast resistance. PLoS One, 2013, 8(3): e59720.

[5] Vo KTX, Kim CY, Hoang TV, Lee SK, Shirsekar G, Seo YS, Lee SW, Wang GL, Jeon JS. OsWRKY67 plays a positive role in basal and xa21-mediated resistance in rice. Frontiers of Plant Science, 2018, 8: 2220.

[6] .Gao J, Bi W, Li H, Wu J, Yu X, Liu D, Wang X. WRKY transcription factors associated with NPR1-mediated acquired resistance in barley are potential resources to improve wheat resistance to puccinia triticina. Frontiers of Plant Science, 2018, 9: 1486

[7] Xu X, Wang H, Liu J, Han S, Lin M, Guo Z, Chen X. OsWRKY62 and OsWRKY76 interact with importin α1s for negative regulation of defensive responses in rice nucleus. Rice (N Y), 2022, 15(1):12.

[8] Shi X, Xiong Y, Zhang K, Zhang Y, Zhang J, Zhang L, Xiao Y, Wang GL, Liu W. the ANIP1-OsWRKY62 module regulates both basal defense and Pi9-mediated immunity against Magnaporthe oryzae in rice. Molecular Plant, 2023, 16(4): 739- 755.

[9] Gao, X., Sun, X., Peng, Y., Huang, Y., Liu, M.-Q., & Weng, X. (2020). WRKY transcription factor functions as a transcriptional regulator of xylanase inhibitor RIXI, involved in rice disease resistance to magnaporthe oryzae. Journal of Plant Biology, 63(3): 177–188.

Downloads

Published

2024-06-06

Issue

Vol. 2 No. 3 (2024): Volume 2, Issue 3

Section

Articles

License

Copyright (c) 2024 by the authors.

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.