| Abstract: | Reggiani, R., Brambilla, I. and Bertani, A. 1985. Effect ofexogenous nitrate on anaerobic metabolism in excised rice roots.II Fermentative activity and adenylic energy charge.—J.exp. Bot 36: 1698–1704. The presence of nitrate in the culture medium of excised sterilerice roots stimulated CO2 and ethanol evolution and, to a smallerextent, alanine accumulation. The increased anaerobic carbohydrateconsumption observed in roots grown on nitrate is consistentwith the constantly higher level of adenylic energy charge.An hypothesis serving to explain the evidence concerning theeffect of nitrate on anaerobically grown rice roots is proposed. Key words: Anaerobiosis, ethanol, nitrate, alanine, adenylic energy charge |
