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. 1992 Dec;100(4):2096–2099. doi: 10.1104/pp.100.4.2096

Evidence for Activation of the Oxidative Pentose Phosphate Pathway during Photosynthetic Assimilation of NO3− but Not NH4+ by a Green Alga 1

Heather C Huppe 1, Greg C Vanlerberghe 1,2, David H Turpin 1
PMCID: PMC1075912  PMID: 16653245

Abstract

Addition of NO3− to N-limited Selenastrum minutum during photosynthesis resulted in an immediate drop in the NADPH/NADP ratio and a slower increase of the NADH/NAD ratio. These changes were accompanied by a rapid decrease in glucose-6-phosphate and increase in 6-phosphogluconate, indicating activation of glucose-6-phosphate dehydrogenase and a role for the oxidation pentose phosphate pathway during photosynthetic NO3− assimilation. In contrast, the short-term changes in pyridine nucleotides and metabolites during photosynthetic assimilation of NH4+ were not consistent with a stimulation of the oxidative pentose phosphate pathway.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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