Contents of ATP and ADP in needles of Norway spruce in relation to their development, age, and to symptoms of forest decline

Weidmann, P.; Einig, Werner; Egger, B.; Hampp, Rüdiger

doi:10.1007/bf00226068

Cited by 14 publications

(13 citation statements)

References 16 publications

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“…In recent studies, fumigation of Norway spruce with O3 and SOg led to elevated ratios of ATP: ADP ) which were observed also in needles of declining trees of the same species (Weidmann et al, 1990). Therefore, it could be assumed that the increase in the ATP:ADP ratio might express ozone-induced repair activities as suggested for spruce (Weidmann et al, 1990).…”

Section: Discussionmentioning

confidence: 93%

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Ozone‐induced accumulation of carbohydrates changes enzyme activities of carbohydrate metabolism in birch leaves

et al. 1997

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SUMMARYBirch cuttings {Betula pendula Roth) were grown in a sand-culture system with two concentrations (0-05, HF and 0-005%, LF) of fertilizer containing macronutrients and micronutrients, and were exposed to 90/40 nll"^ O3 (day/night) and < 3 nl T^ O3 (control) for one growing season in the field fumigation chambers at Birmensdorf (Switzerland). Leaves of different ages were analysed for gas exchange, contents of chlorophyll, protein, and for metabolites as well as enzyme activities of carbohydrate metabolism.Ozone reduced net photosynthesis and chlorophyll contents in mature leaves of both fertilization treatments, whereas that of protein was only reduced in high-fertilized plants (HF). However, net photosynthesis, chlorophyll, and protein increased in young leaves of low'-fertilized plants (LF). The effects of ozone on enzyme activities of carbohydrate metabolism were most pronounced in leaves of LF plants. Specific activities of the sucrose-cleaving enzymes, sucrose synthase and alkaline invertase, were induced, whereas acid invertase was unchanged. Extractable activity of sucrose phosphate synthase, which is a key enzyme of sucrose synthesis, was reduced. Levels of fructose 2,6-bisphosphate, an inhibitor of sucrose synthesis, were increased in leaves of O3/LF plants, but reduced in O3/HF plants. In addition, activities of enzymes involved in starch metabolism, ADP-glucose pyrophosphorylase and starch phosphorylase, were lowered in ozone-treated samples and the ratio of ATP: ADP was increased.It is concluded that chronic ozone exposure leads to an inhibition of sucrose synthesis and favours sucrose degradation. This effect is modulated by the nutrient status of the plants, indicating higher O3 tolerance in HF plants. Furthermore, as the metabolic responses in the ozone-treated samples resemble very closely those observed under end-product inhibition of photosynthesis, we assume that the O3 effect is mainly due to reduced photosynthate export.

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Section: Discussionmentioning

confidence: 93%

“…Therefore, it could be assumed that the increase in the ATP:ADP ratio might express ozone-induced repair activities as suggested for spruce (Weidmann et al, 1990).…”

Section: Discussionmentioning

confidence: 99%

Ozone‐induced accumulation of carbohydrates changes enzyme activities of carbohydrate metabolism in birch leaves

et al. 1997

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“…in Germany (Weidmann et al 1990) and in Austria (Wieser and Havranek 1993). Subsequently, experiments in controlled conditions (open-top chambers and phytotronic chambers) were set up to decipher the mechanisms of O 3 impact on leaves of young trees Sandermann et al 1997).…”

Section: Introductionmentioning

confidence: 99%

Deciphering the ozone-induced changes in cellular processes: a prerequisite for ozone risk assessment at the tree and forest levels

Jolivet

Bagard

Cabané

et al. 2016

Annals of Forest Science

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Abstract& Key message Ozone, one of the major atmospheric pollutants, alters tree growth, mainly by decreasing carbon assimilation and allocation to stems and roots. To date, the mechanisms of O 3 impact at the cellular level have been investigated mainly on young trees grown in controlled or semi-controlled conditions. In the context of climate change, it is necessary to introduce a valuable defence parameter in the models that currently predict O 3 impact on mature trees and the carbon sequestration capacity of forest ecosystems.

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“…The most frequently observed effects of the impact of various pollutants are changes in ATP/ADP ratio and AEC. Many authors interpret those changes as a consequence of a defence response and/or induction of premature senescence of the organism (Weidmann et al 1990). …”

Section: Introductionmentioning

confidence: 98%

“…Because of the intraspecific and age-related variation of Scots pine (Reich et al 1994), our study involved even-aged trees of the same provenance. Moreover, because of differences in sensitivity of developing, mature and ageing needles to stress factors (Weidmann et al 1990), analyses were made for current-year needles and one-year-old needles.…”

Section: Introductionmentioning

confidence: 99%

Chronic environmental pollution alters adenylate levels in needles and fine roots of Scots pine

2003

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Contents of ATP, ADP, AMP, inorganic phosphate, and values of ATP/ADP ratio, adenylate energy charge (AEC), phosphorylation potential (PP) and adenylate kinase activity were analysed in needles and fine roots of Scots pine trees grown at the polluted and control (free of acute air pollution) site. Also chemical properties of the soil and mineral elements in needles from both sites were analysed. In comparison with the control, developing needles from the polluted site contained less ATP, the same amount of ADP and more AMP, and had lower values of ATP/ADP, AEC and PP. In one-year-old needles from the polluted site no change or a decrease in ATP was recorded, while ADP decreased, AMP increased, AEC did not change, and ATP/ADP ratio and PP were higher. In fine roots from the polluted site AMP level, was higher, while ATP, ADP, ATP/ADP ratio, PP and AEC were lower than in the control.

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Contents of ATP and ADP in needles of Norway spruce in relation to their development, age, and to symptoms of forest decline

Cited by 14 publications

References 16 publications

Ozone‐induced accumulation of carbohydrates changes enzyme activities of carbohydrate metabolism in birch leaves

Ozone‐induced accumulation of carbohydrates changes enzyme activities of carbohydrate metabolism in birch leaves

Deciphering the ozone-induced changes in cellular processes: a prerequisite for ozone risk assessment at the tree and forest levels

Chronic environmental pollution alters adenylate levels in needles and fine roots of Scots pine

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