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Reference Detail
| Reference | ||
|---|---|---|
| Author | Ruan B., Hua Z., Zhao J., Zhang B., Ren D., Liu C., Yang S., Zhang A., Jiang H., Yu H., Hu J., Zhu L., Chen G., Shen L., Dong G., Zhang G., Zeng D., Guo L., Qian Q., Gao Z. | |
| Title | OsACL-A2 negatively regulates cell death and disease resistance in rice. | |
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Abstract: ATP-citrate lyases (ACL) play critical roles in tumour cell propagation, foetal development and growth, and histone acetylation in human and animals. Here, we report a novel function of ACL in cell death-mediated pathogen defence responses in rice. Using ethyl methanesulphonate (EMS) mutagenesis and map-based cloning, we identified an Oryza sativa ACL-A2 mutant allele, termed spotted leaf 30-1 (spl30-1), in which an A-to-T transversion converts an Asn at position 343 to a Tyr (N343Y), causing a recessive mutation that led to a lesion mimic phenotype. Compared to wild-type plants, spl30-1 significantly reduces ACL enzymatic activity, accumulates high reactive oxygen species and increases degradation rate of nuclear deoxyribonucleic acids. CRISPR/Cas9-mediated insertion/deletion mutation analysis and complementation assay confirmed that the phenotype of spl30-1 resulted from the defective function of OsACL-A2 protein. We further biochemically identified that the N343Y mutation caused a significant degradation of SPL30N343Y in a ubiquitin-26S proteasome system (UPS)-dependent manner without alteration in transcripts of OsACL-A2 in spl30-1. Transcriptome analysis identified a number of up-regulated genes associated with pathogen defence responses in recessive mutants of OsACL-A2, implying its role in innate immunity. Suppressor mutant screen suggested that OsSL, which encodes a P450 monooxygenase protein, acted as a downstream key regulator in spl30-1-mediated pathogen defence responses. Taken together, our study discovered a novel role of OsACL-A2 in negatively regulating innate immune responses in rice. |
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| Journal | Plant Biotechnol. J. | |
| Country | China | |
| Volume | 17(7) | |
| Pages | 1344-1356 | |
| Year | 2019 | |
| PubMed ID | 30582769 | |
| PubMed Central ID | 6576086 | |
| DOI | 10.1111/pbi.13058 | |
| URL | - | |
| Relation | ||
| Gene | ACLA2 ACLA3 EDT1 KAT1 PR10A PR1A PR1B SGR SL WRKY23 | |
| INSD | - | |
| Strain | Wild Core Collection | - |
| Induced Mutation Lines(NIG Collection) | - | |
| Sterile Seed Strain | - | |
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Lethal Embryo Mutantion Strain |
- | |
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Stages in Each Organ - Muant Lines (Gene) |
- | |
| Cultivated Varieties(NIG Collection) | - | |
| Stages in Each Organ | - | |
