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Lidon, F.C.

Effects of copper on the nitrate to ammonia reduction mechanism in rice plants - 1993 - Printed

2 graph., 1 scheme, 4 tables; 30 ref. Summary (En)

Rice (Oryza sativa) plants were grown in nutrient solution containing copper concentrations from 0.002 to 6.25 g/m3. Measurements of root nitrate uptake were taken over the 30 d period following germination, measurements were also taken of root and shoot contents of Cu as well as shoot contents of molybdenum, nitrate, nitrite and pigments. Phytosynthetic electron transport activity (water to methyl viologen) exhibited an inversely proportional relationship to Cu concentrations while the activities of nitrate reductases showed no apparent correlation with the Cu concentrations, except at the highest levels


English

ISSN: 0300-3604

Subjects--Topical Terms:
Chemical reactions
Chemicophysical properties
Elements
Enzymes
Gramineae
Heavy metals
Heterocyclic compounds
Inorganic acid salts
Inorganic compounds
Metallic elements
Nutrition physiology
Oryza
Oxidoreductases
Physiological functions
Pigments
Plant anatomy
Plant physiology
Plant vegetative organs
Porphyrins
Salts
Terpenoids
Transition elements

Dewey Class. No.: 94-024503