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Ammonium assimilation into glutamine and glutamate is vital for plant growth as these are precursors for almost all nitrogenous compounds. Ammonium can be assimilated onto nitrogenous organic compounds by the concerted action of two enzymes that compose the glutamine synthetase (GS, EC 6.3.1.2) -
A pot experiment with 15N tracing techniques was designed to study the effect of potassium application on nitrogen transfer, photosynthetic characteristics and nitrogen metabolism enzyme activities in two different growth stages of sweet potato. Results indicated that potassium application
The relative contribution of glutamate dehydrogenase (GDH) and the aminotransferase activity to mitochondrial glutamate metabolism was investigated in dilute suspensions of purified mitochondria from potato (Solanum tuberosum) tubers. Measurements of glutamate-dependent oxygen consumption by
We investigated the substrates for flight in the blister beetle Decapotoma lunata by (a) establishing the patterns of maximum activities of enzymes of various metabolic pathways in the flight muscles, (b) measuring the respiratory rates of flight muscle mitochondria with various substrates and (c)