The DOI matches its Crossref record; 55 of the 55 references it cites were found in a registry or an index.
Regulation of Phosphate Homeostasis by MicroRNA in Arabidopsis
Open accessAbstract
In this study, we reveal a mechanism by which plants regulate inorganic phosphate (Pi) homeostasis to adapt to environmental changes in Pi availability. This mechanism involves the suppression of a ubiquitin-conjugating E2 enzyme by a specific microRNA, miR399. Upon Pi starvation, the miR399 is upregulated and its target gene, a ubiquitin-conjugating E2 enzyme, is downregulated in Arabidopsis thaliana. Accumulation of the E2 transcript is suppressed in transgenic Arabidopsis overexpressing miR399. Transgenic plants accumulated five to six times the normal Pi level in shoots and displayed Pi toxicity symptoms that were phenocopied by a loss-of-function E2 mutant. Pi toxicity was caused by increased Pi uptake and by translocation of Pi from roots to shoots and retention of Pi in the shoots. Moreover, unlike wild-type plants, in which Pi in old leaves was readily retranslocated to other developing young tissues, remobilization of Pi in miR399-overexpressing plants was impaired. These results provide evidence that miRNA controls Pi homeostasis by regulating the expression of a component of the proteolysis machinery in plants.
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Metadata
- Authors
- Chiou, T.-J., Aung, K., Lin, S.-I., Wu, C.-C., Chiang, S.-F., & Su, C.-L.
- Venue
- The Plant Cell
- Publisher
- Oxford University Press (OUP)
- Published
- 2005-12-30
- Volume
- 18
- Issue
- 2
- Pages
- 412-421
- ISSN
- 1040-4651 (ISSN-L)
- 1532-298X
- OpenAlex
- W2127253105
- Cited by
- 873
- References
- 55
- FWCI
- 37.86
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Chiou, T.-J., Aung, K., Lin, S.-I., Wu, C.-C., Chiang, S.-F., & Su, C.-L. (2006). Regulation of Phosphate Homeostasis by MicroRNA in Arabidopsis. The Plant Cell. https://doi.org/10.1105/tpc.105.038943
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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