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Giertych, M.; Karolewski, Piotr; Temmerman, L. O. De

doi:10.1023/a:1005009214988

Cited by 53 publications

(10 citation statements)

References 15 publications

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“…Efficient nutrient redistribution allows trees to withstand fluctuation in the soil nutrient availability (Niminen and Helmisaari 1996). There is also a hypothesis that nutrient retranslocation is important for the survival of trees growing at polluted sites (Niminen and Helmisaari 1996;Giertych et al 1999).…”

Section: Introductionmentioning

confidence: 99%

Concentration of elements in silver fir (Abies alba Mill.) needles as a function of needles’ age

Szymura¹

2008

Trees

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Changes in the content of Cd, Ni, Pb, Zn, Fe, Mg, Mn, Ca, P, K, and N in six age classes of silver fir (Abies alba Mill.) needles were described as a function of the needles' age. The raw measurements of each element's concentration were standardized at the level of an individual tree; such a procedure reduced the variability caused by differences in the absolute content of an element between individual trees. The changes in the content of Fe at both sites, and of Pb and Cd at one site were characterized by linear increase. The content of N, P, K, and Mg decreased exponentially, whereas the concentrations of Ca, Mn, and Zn increased exponentially with the needles' age at all sites. Only the concentration of Ni revealed erratic behavior at both sites.

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Section: Introductionmentioning

confidence: 99%

Concentration of elements in silver fir (Abies alba Mill.) needles as a function of needles’ age

Szymura¹

2008

Trees

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“…Methanol was added slowly, dropwise, onto the microcolumn thus prepared. From the greyish-green band moving down- Table 1 The values of retention indices of phenolic compounds TMS derivatives stated for the non-polar column DB-5 in twice temperature programme a RI series was determined from complete homologous n-alkane series C 10 -C 23 ; RI working was determined from n-alkanes C 10 , C 14 wards a fraction with a yellowish shade was rapidly eluted. The first 1.5 mL of the eluate was collected in a 2-mL vial.…”

Section: Methodsmentioning

confidence: 99%

“…The identification of phenolic compounds extracted from leaves, needles, and buds and their quantitative analysis are performed by HPLC [8,9,10,11,12], spectrophotometry [13,14], capillary electrophoresis, CE, or micellar electrochromatography, MEKC [15,16,17], and combinations of different techniques (TLC and HPLC; HPLC with 1 H NMR, MS and UV; and HPLC with CZE) [18,19,20]. Very rarely GC and GC-MS are used [21].…”

Section: Introductionmentioning

confidence: 99%

“…It should be noted that GC and GC-MS are sometimes applied in studies of phenolic compounds in juices and fruit [22,23,24]. Compounds are extracted from plant material with methanol/ethanol [8,11,14,15,18,25] or acetone [9,12] or by multistage extraction with solvents [10,26].…”

Section: Introductionmentioning

confidence: 99%

“…In later studies the SPE with C 18 has seldom been used in studies of phenolic acids in olive samples [30], beverages [31], and plant samples [32,33]. However satisfactory methods for extracting free phenolic compounds from plant samples are still sought [13,14,34,35].…”

Section: Introductionmentioning

confidence: 99%

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Isolation of free phenolic compounds from arboreal leaves by use of the Florisil/C 18 system

Jaroszyńska

2003

Analytical and Bioanalytical Chemistry

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In studies of the phenolic compounds present in leaves and needles, GC and GC-MS have so far been applied only sporadically. This is probably because of the greater difficulties encountered in preparing the samples for this method than those used for liquid chromatography. When preparing a sample for gas chromatography the analyst is faced with two difficult stages-separation of the compound from the matrix without losses (stage 1) so that the final sample can be derivatized to make it suitable for analysis on a non-polar capillary column of the gas chromatograph (stage 2). This paper presents a procedure for extraction of phenolic compounds from the matrix by means of a Florisil/C(18) sorbent system and their analysis by GC. After passage through the adsorbents the recovery ranges from 32% for ferulic acid to 88% for gentisic acid. It was found that this extraction method and the GC analysis are very precise (particularly for samples of a mass <1 g) and can be used for quantification. The high-precision quantification of 15 phenolic acids, shikimic acid, and six other compounds present in pine needles has been achieved. The conditions used for GC analysis and construction of calibration curves for quantitative determination are given.

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Nutrient remobilization in tree foliage as affected by soil nutrients and leaf life span

Achat

Pousse²,

Nicolas³

et al. 2018

Ecological Monographs

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Nutrient remobilization is a key process in nutrient conservation in plants and in nutrient cycling in ecosystems. To predict the productivity of terrestrial ecosystems, we thus need to improve our understanding of the factors that control remobilization. We studied the remobilization rates of several major nutrients (N, P, S, K, Ca, and Mg) in 102 forest ecosystems representing large environmental gradients at the country scale (France). Total amounts or availability of nutrients in soils were correlated with nutrient remobilization: the larger the soil nutrient pool, the lower the remobilization rate (e.g., P remobilization decreased with increasing total or extractable inorganic P in soils). Soil type and soil parent material influenced nutrient remobilization indirectly through their effect on soil nutrients. Nutrient remobilization was also affected by the quality of soil organic matter (C:N and C:P ratios) and K‐Ca‐Mg antagonisms. In addition to soil properties, plant‐related parameters (nutrient concentrations in foliage and leaf life span) and climate variables (e.g., precipitation and actual evapotranspiration) were also correlated with nutrient remobilization. Using multivariate analysis, we found that soil nutrient richness and the life span of the leaf were generally the two most important factors controlling nutrient remobilization. As a whole, the nutrient remobilization rate is regulated by soil nutrients through negative feedback. This general ecological pattern is modulated by ecophysiological constraints of plants, mainly leaf life span or the capability of plants to move Ca through the phloem sap.

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Untitled

Cited by 53 publications

References 15 publications

Concentration of elements in silver fir (Abies alba Mill.) needles as a function of needles’ age

Concentration of elements in silver fir (Abies alba Mill.) needles as a function of needles’ age

Isolation of free phenolic compounds from arboreal leaves by use of the Florisil/C 18 system

Nutrient remobilization in tree foliage as affected by soil nutrients and leaf life span

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