Regulatory coupling of nitrate and sulfate assimilation pathways in cultured tobacco cells

Journal Article · Fri Oct 31 23:00:00 EST 1980 · Proc. Natl. Acad. Sci. U.S.A.; (United States)

DOI:https://doi.org/10.1073/pnas.77.11.6670· OSTI ID:6569022

Reuveny, Z ^[1]; Dougall, D K; Trinity, P M

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1. W. Alton Jones Cell Science Center, Lake Placid, NY

When cultured tobacco cells are provided growth-limiting concentrations of sulfur as sulfate, the rate of development of nitrate reductase (NADH:nitrate oxidoreductase, EC 1.6.6.1) is proportional to the initial sulfate concentration. When the cells are provided growth-limiting concentrations of nitrogen as nitrate, the rate of derepression of ATP sulfurylase (ATP:sulfate adenylyltransferase, EC 2.7.7.4) is proportional to the initial nitrate concentration. These results are taken to be indicative of a reciprocal regulatory coupling between the nitrate and sulfate assimilation pathways.

• OSTI ID: 6569022
• Journal Information: Proc. Natl. Acad. Sci. U.S.A.; (United States), Journal Name: Proc. Natl. Acad. Sci. U.S.A.; (United States) Vol. 77:11; ISSN PNASA
• Country of Publication: United States
• Language: English

Related Subjects

550200* -- Biochemistry
550500 -- Metabolism
59 BASIC BIOLOGICAL SCIENCES
ATP
BIOASSAY
BIOCHEMICAL REACTION KINETICS
BIOLOGICAL ACCUMULATION
BIOLOGICAL EFFECTS
BIOLOGICAL PATHWAYS
CELL CULTURES
ENZYME ACTIVITY
FEEDBACK
KINETICS
METABOLISM
METABOLITES
NICOTIANA
NITRATES
NITROGEN COMPOUNDS
NUCLEOTIDES
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PLANT CELLS
PLANTS
PROTEINS
QUANTITY RATIO
REACTION KINETICS
SENSITIVITY
SOLUBILITY
SULFATES
SULFUR COMPOUNDS