ASSESSMENT AND ANALYSIS OF THE IMPACT OF AIR POLLUTANTS ON FOREST ECOSYSTEMS.

Informazioni relative al progetto

ID dell’accordo di sovvenzione: EV4V0034

Progetto chiuso

Data di avvio 1 Ottobre 1987

Data di completamento 30 Settembre 1991

Finanziato da

• Multiannual research and development programmes (EEC) in the field of the environment - Protection of the environment -, 1986-1990

Costo totale

Nessun dato

Contributo UE

Nessun dato

Coordinato da

Forschungszentrum Karlsruhe Technik und Umwelt GmbH
Germany

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Risultati sfruttabili

Biochemical parameters in conifer needles

Lyophilised needle homogenates, obtained from spruce trees (Picea abies L), were biochemically characterised in relation to the environmental conditions (natural stand or open-top chambers). Biochemical parameters assayed were intermediates of energy (adenine and pyridine nucleotides) and carbohydrate metabolism (carbon partitioning between starch and sucrose). Generally, there were considerable differences between developing (current year) and older needles, in that developing needles had significantly higher adenosine triphosphate (ATP)/ adenosine diphosphate (ADP) and redox ratios. Needles from declining trees showed increased levels of both ratios of ATP/ADP and reduced nicotinamide adenine dinucleotide (NADH)/ nicotinamide adenine dinucleotide (NAD), and also a higher fructose 2,6-biphosphate content.