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- Title
Improvement of Broad-Spectrum Disease-Resistant Rice by the Overexpression of BSR1 via a Moderate-Strength Constitutive Promoter and a Pathogen-Inducible Promoter.
- Authors
Maeda, Satoru; Goto, Shingo; Inoue, Haruhiko; Suwazono, Haruka; Takatsuji, Hiroshi; Mori, Masaki
- Abstract
Conferring crops with resistance to multiple diseases is crucial for stable food production. Genetic engineering is an effective means of achieving this. The rice receptor-like cytoplasmic kinase BSR1 mediates microbe-associated molecular pattern-induced immunity. In our previous study, we demonstrated that rice lines overexpressing BSR1 under the control of the maize ubiquitin promoter exhibited broad-spectrum resistance to rice blast, brown spot, leaf blight, and bacterial seedling rot. However, unfavorable phenotypes were observed, such as a decreased seed germination rate and a partial darkening of husked rice. Herein, we present a strategy to address these unfavorable phenotypes using an OsUbi7 constitutive promoter with moderate expression levels and a pathogen-inducible PR1b promoter. Rice lines expressing BSR1 under the influence of both promoters maintained broad-spectrum disease resistance. The seed germination rate and coloration of husked rice were similar to those of the wild-type rice.
- Subjects
DISEASE resistance of plants; RICE blast disease; RICE; GENETIC overexpression; GERMINATION; CORN
- Publication
Plants (2223-7747), 2024, Vol 13, Issue 8, p1138
- ISSN
2223-7747
- Publication type
Article
- DOI
10.3390/plants13081138