Metabolic changes during natural ageing in sunflower (Helianthus annuus) leaves: expression and activity of glutamine synthetase isoforms are regulated differently during senescence
Departamento de Botánica, Ecología y Fisiología Vegetal, Área de Fisiología Vegetal, Facultad de Ciencias, Universidad de Córdoba, Campus de Rabanales, Edificio Celestino Mutis (C4), E-14071 Córdoba, Spain