Journal
MOLECULAR PLANT PATHOLOGY
Volume 21, Issue 7, Pages 951-960Publisher
WILEY
DOI: 10.1111/mpp.12941
Keywords
hydrogen peroxide (H2O2); Magnaporthe oryzae; peroxidase; resistance; rice blast; salicylic acid; transcriptome analysis
Categories
Funding
- Tianfu Ten-thousand Talents Program (Tianfu science and technology elite project)
- USDA National Institute of Food and Agriculture [2017-67013-26590]
- Fok Ying Tung Education Foundation [171021]
- Applied Basic Research Programs of Science and Technology Department from Sichuan Province [2019YJ0432]
- National Institutes of Health [GM59962]
- Outstanding Young Scientific and Technological Talents Project in Sichuan Province [2019JDJQ0045]
- Open Research Fund of State Key Laboratory of Hybrid Rice (Hunan Hybrid Rice Research Center) [2017KF01]
- National Natural Science Foundation of China [31772152, 31972254, 31825022, 31772153, 31571994]
- National Science Foundation [1237975]
- Innovative Training Program of Sichuan Agricultural University [201910626042]
Ask authors/readers for more resources
bsr-d1, an allele encoding a transcription factor identified from the rice cultivar Digu, confers durable, broad-spectrum resistance to infections by strains of Magnaporthe oryzae. bsr-d1 was predicted to inhibit M. oryzae-induced expression of Bsr-d1 RNA and degradation of hydrogen peroxide to achieve resistance to M. oryzae. However, the global effect of biological process and molecular function on blast resistance mediated by Bsr-d1 remains unknown. In this study, we compared transcriptomic profiling between Bsr-d1 knockout (Bsr-d1KO) lines and the wild type, TP309. Our study revealed that bsr-d1 mainly regulates the redox state of plant cells, but also affects amino acid and unsaturated fatty acid metabolism. We further found that BSR-D1 indirectly regulates salicylic acid biosynthesis, metabolism, and signal transduction downstream of the activation of H2O2 signalling in the bsr-d1-mediated immune response. Furthermore, we identified a novel peroxidase-encoding gene, Perox3, as a new BSR-D1 target gene that reduces resistance to M. oryzae when overexpressed in TP309. These results provide new insights into the bsr-d1-mediated blast resistance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available