| http://purl.uniprot.org/citations/27895227 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/27895227 | http://www.w3.org/2000/01/rdf-schema#comment | "Potassium (K+) plays crucial roles in plant growth and development. In natural environments, K+ availability in soils is relatively low and fluctuating. Transcriptional regulation of K+ transporter genes is one of the most important mechanisms in the plant's response to K+ deficiency. In this study, we demonstrated that the transcription factor ARF2 (Auxin Response Factor 2) modulates the expression of the K+ transporter gene HAK5 (High Affinity K+ transporter 5) in Arabidopsis thaliana The arf2 mutant plants showed a tolerant phenotype similar to the HAK5-overexpressing lines on low-K+ medium, whose primary root lengths were longer than those of wild-type plants. High-affinity K+ uptake was significantly increased in these plants. ARF2-overexpressing lines and the hak5 mutant were both sensitive to low-K+ stress. Disruption of HAK5 in the arf2 mutant abolished the low-K+-tolerant phenotype of arf2 As a transcriptional repressor, ARF2 directly bound to the HAK5 promoter and repressed HAK5 expression under K+ sufficient conditions. ARF2 can be phosphorylated after low-K+ treatment, which abolished its DNA binding activity to the HAK5 promoter and relieved the inhibition on HAK5 transcription. Therefore, HAK5 transcript could be induced, and HAK5-mediated high-affinity K+ uptake was enhanced under K+ deficient conditions. The presented results demonstrate that ARF2 plays important roles in the response to external K+ supply in Arabidopsis and regulates HAK5 transcription accordingly."xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.org/dc/terms/identifier | "doi:10.1105/tpc.16.00684"xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/author | "Wang Y."xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/author | "Zhao S."xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/author | "Zhang M.L."xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/author | "Ma T.L."xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/date | "2016"xsd:gYear |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/name | "Plant Cell"xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/pages | "3005-3019"xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/title | "Phosphorylation of ARF2 Relieves Its Repression of Transcription of the K+ Transporter Gene HAK5 in Response to Low Potassium Stress."xsd:string |
| http://purl.uniprot.org/citations/27895227 | http://purl.uniprot.org/core/volume | "28"xsd:string |
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