DOI: 10.1073/pnas.96.10.5868. Transcriptional regulation of plant phosphate transporters

Transcriptional regulation of plant phosphate transporters

10.1073/pnas.96.10.5868

Crossref journal-article

Proceedings of the National Academy of Sciences

Proceedings of the National Academy of Sciences (341)

Abstract

Phosphorus is acquired by plant roots primarily via the high-affinity inorganic phosphate (Pi) transporters. The transcripts for Pitransporters are highly inducible upon Pistarvation, which also results in enhanced Piuptake when Piis resupplied. Using antibodies specific to one of the tomato Pitransporters (encoded byLePT1), we show that an increase in theLePT1transcript under Pistarvation leads to a concurrent increase in the transporter protein, suggesting a transcriptional regulation for Piacquisition. LePT1 protein accumulates rapidly in tomato roots in response to Pistarvation. The level of transporter protein accumulation depends on the Piconcentration in the medium, and it is reversible upon resupply of Pi. LePT1 protein accumulates all along the roots under Pistarvation and is localized primarily in the plasma membranes. These results clearly demonstrate that plants increase their capacity for Piuptake during Pistarvation by synthesis of additional transporter molecules.

Bibliography

Muchhal, U. S., & Raghothama, K. G. (1999). Transcriptional regulation of plant phosphate transporters. Proceedings of the National Academy of Sciences, 96(10), 5868â5872.

Authors 2

Umesh S. Muchhal (first)
K. G. Raghothama (additional)

References 36 Referenced 146

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K G Raghothama, U S Muchhal, D H Kim, M Bucher Phosphorus in Plant Biology: Regulatory Roles in Molecular, Cellular, Organismic, and Ecological Processes, eds J P Lynch, J Deikman (Am. Soc. Plant Physiologists, Rockville, MD), pp. 271–280 (1998). / Phosphorus in Plant Biology: Regulatory Roles in Molecular, Cellular, Organismic, and Ecological Processes by Raghothama K G (1998)
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Dates

Type	When
Created	23 years ago (July 26, 2002, 10:35 a.m.)
Deposited	2 years, 4 months ago (April 22, 2023, 8:16 a.m.)
Indexed	4 days, 15 hours ago (Aug. 20, 2025, 8:25 a.m.)
Issued	26 years, 3 months ago (May 11, 1999)
Published	26 years, 3 months ago (May 11, 1999)
Published Online	26 years, 3 months ago (May 11, 1999)
Published Print	26 years, 3 months ago (May 11, 1999)

Funders 0

None

BibTeX

@article{Muchhal_1999, title={Transcriptional regulation of plant phosphate transporters}, volume={96}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.96.10.5868}, DOI={10.1073/pnas.96.10.5868}, number={10}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Muchhal, Umesh S. and Raghothama, K. G.}, year={1999}, month=may, pages={5868–5872} }

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