Calcineurin, a conserved Ca(2+)/calmodulin-regulated protein phosphatase, is an important mediator of calcium-dependent signal transduction pathways in many organisms. In Saccharomyces cerevisiae, calcineurin positively regulates transcription in response to stress by dephosphorylating the transcription factor Crz1p. Here we describe the identification, cloning, and function of the gene encoding the Magnaporthe grisea CRZ1 homolog, MgCRZ1. Specifically, we demonstrated that MgCRZ1 partially complemented a yeast Deltacrz1 mutant and exhibited Ca(2+) and calcineurin activity-dependent cellular localization. Targeted disruption of MgCRZ1 resulted in hypersensitivity to Ca(2+). Compared with the wild-type Guy11 strain, the Deltacrz1 mutants formed significantly reduced numbers of conidia and a large portion of abnormal appressoria (>50%) that exhibited little or no melanin production. Lipid metabolism was delayed, and the level of turgor pressure within the appressoria declined, thereby notably attenuating mutant pathogenicity. We conclude that MgCRZ1 is essential for growth, development, and full virulence of M. grisea.
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| Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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| Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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| Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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| Site | Modification | Modifier | Source | Reference |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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| Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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| Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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