Vacuoles and lysosomes are organelles involved in the degradation of cytoplasmic proteins and organelles. Vacuolar morphology is dynamically regulated by fission and fusion in budding yeast. Vacuolar fusion is elicited in nutrient-depleted conditions and mediated by inactivation of target of rapamycin complex 1 (TORC1) protein kinase. However, it is unknown whether and how vacuolar morphology affects macroautophagy and microautophagy, which are induced by nutrient starvation and TORC1 inactivation. Here, we developed a system to control vacuolar fission in budding yeast. Vacuolar fragmentation promoted microautophagy but not macroautophagy. Vacuolar fragmentation caused multiple nucleus-vacuole junctions. Multiple vacuoles caused by vacuolar fragmentation also improved micronucleophagy (microautophagic degradation of a portion of the nucleus). However, vacuolar morphology did not impact nucleolar remodeling, condensation of the rDNA (rRNA gene) region, or separation of ribosomal DNA from nucleolar proteins, which is evoked by TORC1 inactivation. Thus, this study provides insights into the impacts of vacuolar/lysosomal morphology on macroautophagy and microautophagy.
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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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| Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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| Evidence ID | Analyze ID | File | Description |
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