Nitrogen storage and remobilization in ash (

Marmann, Peter; Wendler, Renate; Millard, P.; Heilmeier, H.

doi:10.1007/s004680050088

Cited by 2 publications

(1 citation statement)

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“…These data contribute to a better knowledge about the nutrient supply in trees and thus indirectly about the chemical environmental conditions at the time of the growth of the respective tree ring. The classical analysis of such tree rings is based on mass spectroscopy, which determines the amount of nitrogen isotopes in small wood samples of tree discs, 5 on element analysis 6,7 or on extraction procedures 8,9 of microtome wood sections, all of which destroy the sample. These techniques are time-consuming and experimentally expensive.…”

Section: Introductionmentioning

confidence: 99%

Retrospective chemical analysis of tree rings by means of the scanning electrochemical microscopy with shear force feedback

Garay¹,

Ufheil²,

Borgwarth³

et al. 2004

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Retrospective chemical analysis of tree rings by means of the scanning electrochemical microscopy with shear force feedback

Garay¹,

Ufheil²,

Borgwarth³

et al. 2004

Phys. Chem. Chem. Phys.

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Significance of Ozone Exposure for Inter‐Annual Differences in Primary Metabolites of Old‐Growth Beech (Fagus sylvatica L.) and Norway Spruce (Picea abies L.) Trees in a Mixed Forest Stand

Αλεξού¹,

Hofer²,

Liu³

et al. 2007

Plant Biology

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The influence of long-term free-air ozone fumigation and canopy position on leaf contents of total glutathione, its redox state, non-structural proteins (NSP), soluble amino compounds, and total soluble sugars in old-growth beech (FAGUS SYLVATICA) and spruce (PICEA ABIES) trees were determined over a period of five years. Ozone fumigation had weak effects on the analysed metabolites of both tree species and significant changes in the contents of total glutathione, NSP, and soluble sugars were observed only selectively. Beech leaves were affected by crown position to a higher extent than spruce needles and exhibited lower contents of total glutathione and NSP and total soluble sugars, but enhanced contents of oxidised glutathione and amino compounds in the shade compared to the sun crown. Contents of total soluble sugars generally were decreased in shade compared to sun needles of spruce trees. Interspecific differences between beech and spruce were more distinct in the sun compared to the shade crown. Contents of total glutathione were increased whilst contents of amino compounds and total soluble sugars were lower in spruce needles compared to beech leaves. The metabolites determined showed individual patterns in the course of the five measurement years. Contents of total glutathione and its redox state correlated with air temperature and global radiation, indicating an important role for the antioxidant at low temperatures. Correlations of glutathione with instantaneous ozone concentrations seem to be a secondary effect. Differences in proteins and/or amino compounds in the inter-annual course are assumed to be a consequence of alterations in specific N uptake rates.

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Nitrogen storage and remobilization in ash (

Cited by 2 publications

References 0 publications

Retrospective chemical analysis of tree rings by means of the scanning electrochemical microscopy with shear force feedback

Retrospective chemical analysis of tree rings by means of the scanning electrochemical microscopy with shear force feedback

Significance of Ozone Exposure for Inter‐Annual Differences in Primary Metabolites of Old‐Growth Beech (Fagus sylvatica L.) and Norway Spruce (Picea abies L.) Trees in a Mixed Forest Stand

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