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Wyświetlanie 1-2 z 2
Tytuł:
Akumulacja i rozmieszczenie składników odżywczych w pędach Vaccinium vitis-idaea L. i Vaccinium myrtillus L.
Accumulation and distribution of nutrients in shoots of Vaccinium vitis-idaea L. and Vaccinium myrtillus L.
Autorzy:
Parzych, A.
Powiązania:
https://bibliotekanauki.pl/articles/989673.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
krzewy lesne
borowka czarna
Vaccinium myrtillus
borowka brusznica
Vaccinium vitis-idaea
liscie
lodygi
korzenie
azot
potas
magnez
wapn
cynk
miedz
mangan
zelazo
zawartosc makroelementow
bioakumulacja
translokacja pierwiastkow
wspolczynnik translokacji
cowberry
bilberry
leaves
stems
roots
translocation factor
Opis:
The paper presents the analysis of the macro− and microelements content in the leaves, stems and roots of Vaccinium myrtillus and Vaccinium vitis−idaea as well as in the surface genetic horizons of the soils of the Słowiński National Park (SNP). The cumulative properties and translocation coefficients were characterized as well as translocation coefficients of nutritional components in bilberry sprouts. The nitrogen was determined by Kjeldahl's method. The contents of K, Mg, Ca, Zn, Cu, Mn, and Fe by atomic absorption spectrometry after digestion in the mixture of 65% HNO3 and 30% H2O2. Organic and humus horizons of the tested soils represented the acidic reaction and diversified quantity of organic matter. The content of basic macro components in the soils of the SNP was very low. Concentration of Zn, Cu, Mn and Fe in the soils remained within the limits of geochemical background without showing any pollution with these elements. Chemical composition of bilberry sprouts was diversified depending on species, fragment of the sprout and the study plot. Nitrogen content in leaves and stems of V. myrtillus was much higher than in the case of V. vitis−idaea. The roots of both species of bilberries accumulated similar quantities of N, which is indicated by the values of the bioaccumulation coefficient and the lack of statistical diversity. All analyzed macro− and microcomponents were accumulated in the highest quantity in the leaves and stems of V. myrtillus, which represented, without any doubt, higher demand of this species for nutritional components. The roots of V. vitis−idaea accumulated higher quantities of Mg, Ca and Zn, while the stems of bilberry accumulated twice as much manganese (1198.3 mg/kg) than the stems of cowberry (561.2 mg/kg). The test results show excessive accumulation of Mn by sprouts of V. myrtillus. In the case of the examined species, the highest mobility was characteristic for N and K (in the relationship leaves/stems) and Ca, Mg, Mn, K and Zn (in the relationship stems/roots). Fe and Cu were characterized by the lowest mobility in bilberry tissues. Significant differences in the content of N (p<0.001) and Mg (p<0.001) in leaves and stems, K (p<0.001), Cu (p<0.05) and Fe (p<0.01) in leaves, Zn (p<0.05) and Mn (p<0.001) in stems were found. Differences in accumulation of macro− and microcomponents in the roots seemed not to be significant.
Źródło:
Sylwan; 2016, 160, 01; 40-48
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Distribution of triterpene acids and their derivatives in organs of cowberry (Vaccinium vitis-idaea L.) plant
Autorzy:
Szakiel, Anna
Mroczek, Agnieszka
Powiązania:
https://bibliotekanauki.pl/articles/1040859.pdf
Data publikacji:
2007
Wydawca:
Polskie Towarzystwo Biochemiczne
Tematy:
ursolic acid
triterpenoids
Ericaceae
allelopathic activity
Vaccinium vitis-idaea L.
cowberry
oleanolic acid
Opis:
Wild berries of the genus Vaccinium have become increasingly popular in human health promotion due to their nutritional and medicinal properties. Some striking divergence of opinion about the content of triterpenoids in these plants still exists, meanwhile, this very large class of natural isoprenoids exhibits a wide range of biological activities and hence is of growing research interest. An investigation of triterpenoidal constituents from the cowberry (Vaccinium vitis-idaea L.) plant led to the isolation of two isomeric acids: oleanolic and ursolic and the occurrence of their derivatives in this plant was demonstrated for the first time. Free triterpene acids as well as small amounts of their bound forms (presumable glycosides and glycoside esters) occur in fruits and the vegetative part of the plant, however, in various amounts and different ratios. The total content of both acids was the highest in organs regarded as traditional herbal resources, namely fruits and leaves (1 and 0.6% of dry mass, respectively), whereas it was markedly lower in stems and rhizomes. However, the rhizomes were in turn the plant organ containing relatively the highest amount of the bound forms of both acids (0.01% of dry mass). Ursolic acid was dominant in the whole plant, but the ratio of oleanolic to ursolic acid was significantly different in individual organs, decreasing from the upper (fruits 1:2.4, leaves 1:2) to the lower (stems 1:3.5, rhizomes 1:5.2) parts of the plant. This pattern of distribution of triterpenoids in the plant may have an important physiological and ecological meaning.
Źródło:
Acta Biochimica Polonica; 2007, 54, 4; 733-740
0001-527X
Pojawia się w:
Acta Biochimica Polonica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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