WD-repeat proteins are involved in a breadth of cellular processes. While the WD-repeat protein encoding gene NOTCHLESS has been involved in the regulation of the Notch signaling pathway in Drosophila, its yeast homolog Rsa4p was shown to participate in 60S ribosomal subunit biogenesis. The plant homolog ScNLE was previously characterized in Solanum chacoense (ScNLE) as being involved in seed development. However, expression data and reduced size of ScNLE underexpressing plants suggested in addition a role during shoot development. We here report the detailed phenotypic characterization of ScNLE underexpressing plants during shoot development. ScNLE was shown to be expressed in actively dividing cells of the shoot apex. Consistent with this, ScNLE underexpression caused pleiotropic defects such as a reduction in aerial organ size, a reduction in some organ numbers, delayed flowering, and an increase in stomatal index. Analysis of adaxial epidermal cells revealed that both cell number and cell size were reduced in mature leaves of ScNLE underexpressing lines. Two-hybrid screens with the Nle domain and the WD-repeat domain of ScNLE allowed the isolation of homologs of yeast MIDASIN and NSA2 genes, the products of which are involved in 60S ribosomal subunit biogenesis in yeast. A ScNLE-GFP chimeric protein was localized in both the cytoplasm and nucleus. These data altogether suggest that ScNLE likely plays a role in 60S ribosomal subunit biogenesis, which is essential for proper cellular growth and proliferation during plant development.
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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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