Transcriptional and Posttranscriptional Regulation of Nitrogen-Responding Expression of Phosphoenolpyruvate Carboxylase Gene in Maize

Suzuki, Iwane; Crétin, Claude; Omata, Tatsuo; Sugiyama, Tatsuo

doi:10.1104/pp.105.4.1223

Cited by 69 publications

(67 citation statements)

References 19 publications

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“…Pgkl mRNAs accumulate in leaves in response to cytokinin (6-BAP) treatment. Although cytokinins have been implicated in a wide variety of plant responses, including transcriptional activation of nitrate reductase (Lu et al, 1990(Lu et al, , 1992 and PEPC (Suzuki et al, 1994) and increases in PEPC and NADP-malic enzyme accumulation and activity in the ice plant (Dai et al, 1994), their role in controlling gene expression in response to osmotic stress is still not fully understood. One possibility is that cytokinin response elements interact with cytokininactivated transcription factors (Thomas et al, 1995) to mediate transcriptional activation events.…”

Section: Discussionmentioning

confidence: 99%

Posttranscriptional and Posttranslational Control of Enolase Expression in the Facultative Crassulacean Acid Metabolism Plant Mesembryanthemum crystallinum L

1995

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Section: Discussionmentioning

confidence: 99%

Posttranscriptional and Posttranslational Control of Enolase Expression in the Facultative Crassulacean Acid Metabolism Plant Mesembryanthemum crystallinum L

1995

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“…Expression of this gene is not necessarily coupled to the development of Kranz leaf anatomy because, in maize, it also occurs in such tissues as the inner leaf sheaths and tassels (43). In addition to light, cytokinins upregulate the transcriptional activity of the C 4 -PEPC gene in maize leaves recovering from N deficiency (106), whereas in Sorghum abscisic acid (ABA) stimulates specific Ppc mRNA accumulation (2). In M. crystallinum, CAM-PEPC gene expression is induced by salt stress and/or ABA during C 3 to CAM switching, and these effects are moderated by light (76).…”

Section: Ppc Promoter Analysis and Transcriptionmentioning

confidence: 99%

PHOSPHOENOLPYRUVATE CARBOXYLASE: A Ubiquitous, Highly Regulated Enzyme in Plants

Chollet

Vidal

O’Leary³

1996

Annu. Rev. Plant. Physiol. Plant. Mol. Biol.

650

559

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Since plant phosphoenolpyruvate carboxylase (PEPC) was last reviewed in the Annual Review of Plant Physiology over a decade ago (O'Leary 1982), significant advances have been made in our knowledge of this oligomeric, cytosolic enzyme. This review highlights this exciting progress in plant PEPC research by focusing on the three major areas of recent investigation: the enzymology of the protein; its posttranslational regulation by reversible protein phosphorylation and opposing metabolite effectors; and the structure, expression, and molecular evolution of the nuclear PEPC genes. It is hoped that the next ten years will be equally enlightening, especially with respect to the three-dimensional structure of the plant enzyme, the molecular analysis of its highly regulated protein-Ser/ Thr kinase, and the elucidation of its associated signal-transduction pathways in various plant cell types.

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“…We determined mRNA expression patterns under low and high N, because N application has been found to promote the expression of Rubisco (Plumley and Schmidt 1989), GS (Sakakibara et al 1992), and PEPC (Suzuki et al 1994). …”

Section: Introductionmentioning

confidence: 99%

Developmental regulation of photosynthate distribution in leaves of rice

Shinano

Nakajima²,

Wasaki

et al. 2006

Photosynt.

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AbstractmRNA expression patterns of genes for metabolic key-enzymes (sucrose phosphate synthase [SPS], phosphoenolpyruvate carboxylase [PEPC], pyruvate kinase, ribulose 1,5-bisphosphate carboxylase/oxygenase, glutamine synthetase 1, and glutamine synthetase 2) were investigated in leaves of rice plants grown at two nitrogen (N) concentrations. The relative gene expression patterns were similar in all leaves except for 9 th leaf, in which mRNA levels were generally depressed.Though an increased N concentrations prolonged the expression period of each mRNA, it did not affect the relative expression intensity of any mRNA in a given leaf. SPS V max , SPS limiting activity, PEPC activity, and carbon flow were examined using 14 CO 2 . The ratio between PEPC activity and SPS V max was higher in leaves developed at the vegetative growth stage (vegetative leaves: 5 th and 7 th 1 leaf) than in leaves developed after the ear primordia formation stage (reproductive leaves: 9 th and flag leaf). PEPC activity and SPS V max decreased with declining leaf N concentration. The 14 C photosynthate distribution to the amino acids fraction was higher in vegetative than in reproductive leaves when compared for the same leaf N status. Thus, at high PEPC activity to SPS activity ratio, more 14 C photosynthate was distributed to the amino acid pool, whereas at higher SPS activity, more 14 C was channeled into the carbohydrate fraction. Thus, leaf ontogeny was an important factor controlling photosynthate distribution to the Nor C-pool, respectively, regardless of leaf N status.

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Transcriptional and Posttranscriptional Regulation of Nitrogen-Responding Expression of Phosphoenolpyruvate Carboxylase Gene in Maize

Cited by 69 publications

References 19 publications

Posttranscriptional and Posttranslational Control of Enolase Expression in the Facultative Crassulacean Acid Metabolism Plant Mesembryanthemum crystallinum L

Posttranscriptional and Posttranslational Control of Enolase Expression in the Facultative Crassulacean Acid Metabolism Plant Mesembryanthemum crystallinum L

PHOSPHOENOLPYRUVATE CARBOXYLASE: A Ubiquitous, Highly Regulated Enzyme in Plants

Developmental regulation of photosynthate distribution in leaves of rice

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