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Cited by 265

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Phosphate Starvation Inducible `Bypasses' of Adenylate and Phosphate Dependent Glycolytic Enzymes in Brassica nigra Suspension Cells

Open access
Duff, Stephen M. G., Moorhead, Greg B. G., Lefebvre, Daniel D., Plaxton, William C.·1989·Plant Physiology

Abstract

When Brassica nigra leaf petiole suspension cells were subjected to 7 days of inorganic phosphate (Pi) starvation the extractable activity of: (a) pyrophosphate:fructose 6-phosphate 1-phosphotransferase, nonphosphorylating NADP-glyceraldehyde 3-phosphate dehydrogenase, phosphoenolpyruvate phosphatase, and phosphoenolpyruvate carboxylase increased at least fivefold, (b) phosphorylating NAD-glyceraldehyde 3-phosphate dehydrogenase decreased about sixfold, and (c) ATP:fructose 6-phosphate 1-phosphotransferase, 3-phosphoglycerate kinase, pyruvate kinase, or NAD malic enzyme was not altered. Pi deprivation also resulted in significant reductions in extractable levels of Pi, ATP, ADP, fructose 2,6-bisphosphate, and soluble protein, but caused a sixfold elevation in free amino acid concentrations. No change in inorganic pyrophosphate concentration was observed following Pi starvation. It is hypothesized that pyrophosphate:fructose 6-phosphate 1-phosphotransferase, nonphosphorylating NADP-glyceraldehyde 3-phosphate dehydrogenase, and phosphoenolpyruvate phosphatase bypass nucleotide phosphate or Pi-dependent glycolytic reactions during sustained periods of Pi depletion.

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Metadata

Authors
Duff, S. M. G., Moorhead, G. B. G., Lefebvre, D. D., & Plaxton, W. C.
Venue
Plant Physiology
Published
1989-08-01
Volume
90
Issue
4
Pages
1275-1278
ISSN
  • 0032-0889 (ISSN-L)
  • 1532-2548
OpenAlex
W1964904663
Cited by
265
References
7
FWCI
10.87
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Phosphate Starvation Inducible `Bypasses' of Adenylate and Phosphate Dependent Glycolytic Enzymes in Brassica nigra Suspension Cells. https://app.cochat.ai/papers/10.1104/pp.90.4.1275
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Duff, S. M. G., Moorhead, G. B. G., Lefebvre, D. D., & Plaxton, W. C. (1989). Phosphate Starvation Inducible `Bypasses' of Adenylate and Phosphate Dependent Glycolytic Enzymes in Brassica nigra Suspension Cells. Plant Physiology. https://doi.org/10.1104/pp.90.4.1275

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