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Wyszukujesz frazę "photosynthetic carotenoid" wg kryterium: Temat

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    Wyświetlanie 1-6 z 6
    Tytuł:
    The influence of biotic factors on phytoplankton pigment composition and resources in Baltic ecosystems: new analytical results
    Autorzy:
    Ston-Egiert, J.
    Lotocka, M.
    Ostrowska, M.
    Kosakowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/48253.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    chlorophyll
    chlorophyll a
    concentration
    carotenoid
    photosynthetic carotenoid
    photoprotecting carotenoid
    pigment
    phytoplankton biomass
    Baltic Sea
    biotic factor
    Baltic ecosystem
    Źródło:
    Oceanologia; 2010, 52, 1; 101-125
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Qualitative and quantitative analysis of Baltic phytoplankton pigments
    Autorzy:
    Ston, J.
    Kosakowska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/49132.pdf
    Data publikacji:
    2000
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    pigment
    qualitative analysis
    sea water
    quantitative analysis
    photosynthetic carotenoid
    Baltic Sea
    Gdansk Gulf
    phytoplankton
    chlorophyll
    photoprotecting carotenoid
    Opis:
    The paper presents the results of research into the pigment composition of seawater samples taken from various depths in the Gulf of Gdańsk in April and September 1999. Pigments were separated by RP–HPLC, and identification was confirmed by co-injection with reference standards and on-line diode array spectra. The following groups of pigments were identified: chlorophylls: a, b, c1 + c2; photosynthetic carotenoids (PSC) – peridinin, fucoxanthin, α-carotene; photoprotecting carotenoids (PPC) – diadinoxanthin, alloxanthin, zeaxanthin, lutein, neoxanthin, violaxanthin and β-carotene. Quantitative and qualitative diversity in pigment characteristics were observed in both seasons, though lutein and α-carotene were not identified in the September samples. The respective April and September concentrations of the functional groups of pigments were: total chlorophylls content 0.47–104.25 and 0.57–13.66 μg dm−3; PSC 0.07–21.23 and 0.02–1.56 μg dm−3; PPC 0.05–14.08 and 0.04–1.79 μg dm−3. Within the PSC group, peridinin and fucoxanthin were dominant in the April samples, but only fucoxanthin in the September ones. Among the PPCs, diadinoxanthin and alloxanthin were dominant in April, zeaxanthin in September. Photosynthetic and photoprotecting carotenoids display a linear correlation with chlorophyll a content in all the samples.
    Źródło:
    Oceanologia; 2000, 42, 4
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of underwater light fields on pigment characteristics in the Baltic Sea – results of statistical analysis
    Autorzy:
    Ston-Egiert, J.
    Majchrowski, R.
    Darecki, M.
    Kosakowska, A.
    Ostrowska, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/48040.pdf
    Data publikacji:
    2012
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    pigment
    phytoplankton
    underwater irradiance
    statistical analysis
    Baltic Sea
    light intensity
    spectral distribution
    water
    chlorophyll
    carotenoid
    high performance liquid chromatography
    photosynthetic carotenoid
    Źródło:
    Oceanologia; 2012, 54, 1
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Photochemical activity, photosynthetic pigments and carbohydrates in poplar leaves fumigated with sulphur dioxide
    Autorzy:
    Szadel, A
    Lorenc-Plucinska, G.
    Karolewski, P.
    Matysiak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/41307.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    pigment
    photosynthetic pigment
    Populus deltoides
    sugar
    sulphur dioxide
    carotenoid
    carbohydrate
    chlorophyll
    leaf
    poplar
    Opis:
    The purpose of this study was to assess the influence of SO2 on photosynthetic apparatus and the level of total nonstructural carbohydrates (TNC) in developing and mature leaves of poplar (Populus deltoides). Photosynthetic apparatus was evaluated on the basis of fluorescence parameters (Fv/Fm, OPSII, qP and Rfd) and photosynthetic pigments (chlorophylls and carotenoids). Cuttings of poplar were exposed to 0.25 ppm of SO2 at 25°C and 200-300 mmol m-2s-1 PAR for 6 hours daily during 5 days in a fumigation chamber. The fumigation did not produce any significant differences in fluorescence parameters in neither developing nor mature leaves. In some mature leaves the concentration of pigments increased under the influence of SO2. Soluble carbohydrates decreased significantly both in developing and mature leaves and this was accompanied with an increase in starch accumulation. We suggest that Populus deltoides is a species tolerant to sulphur dioxide and the used SO2 dosage did not significantly impair the light reactions of photosynthesis, but it disturbed the accumulation of starch and the utilization of soluble carbohydrates in plants exposed to SO2.
    Źródło:
    Dendrobiology; 2003, 49
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Antioxidant defence system in the leaves and roots of A. thaliana under long-term S deficiency
    Autorzy:
    Ostaszewska, M.
    Juszczuk, I.M.
    Powiązania:
    https://bibliotekanauki.pl/articles/79954.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    conference
    antioxidant defense system
    Arabidopsis thaliana
    leaf
    root
    photosynthetic pigment
    carotenoid
    superoxide dismutase
    ascorbate peroxidase
    Źródło:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
    0860-7796
    Pojawia się w:
    BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of the relationship between the SPAD values and photosynthetic pigments content in Quercus petraea and Prunus serotina leaves
    Autorzy:
    Bielinis, E.
    Jozwiak, W.
    Robakowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/41313.pdf
    Data publikacji:
    2015
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    black cherry
    tree
    modelling
    relationship
    SPAD value
    photosynthetic pigment
    pigment content
    Quercus petraea
    Prunus serotina
    leaf
    sessile oak
    chlorophyll
    carotenoid
    Opis:
    In forest research and nursery practice there is often a need to monitor the condition and responses of trees to different stressors. Chlorophyll content in leaf is a good indicator of plant health and can be measured rapidly in many repetitions using the chlorophyll meter SPAD-502Plus. This practical tool provides the values of chlorophyll content in relative units (SPAD values), therefore it should be calibrated for each species to determine chlorophyll content in physiological units. In this study, the chlorophyll meter SPAD-502Plus was calibrated to be used for total chlorophyll (Chl), chlorophyll a (Chl a), chlorophyll b (Chl b) and carotenoids (Car) contents determination in leaves of Quercus petraea and Prunus serotina seedlings growing in different light environments. In the same leaf, SPAD values were measured with the Chl meter, and then photosynthetic pigments content (PP; chlorophyll and carotenoids) was consistently assessed using a conventional extraction method. The measurements were conducted once a month from May to November in three light treatments to obtain the widest possible range of the PP content values. To estimate total Chl content in leaves using the chlorophyll meter the quadratic polynomial functions: y = 0.0374x2 + 0.5345x + 0.5137 and y = 0.024x2 + 2.1998x – 32.7866 were obtained from the relationship between the Chl meter SPAD readings and total Chl determined spectrophotometrically for P. serotina and Q. petraea, respectively. Chl was higher under shade compared with full light regime and Car were linearly correlated with Chl. PP content was positively correlated with air temperature except for Car in P. serotina leaves. It was concluded that at the same soil conditions chlorophyll content in leaves of Q. petraea and P. serotina depended on species, light regimes and temperature of growth. The chlorophyll meter can be used as a practical tool to monitor and compare photosynthetic pigments content in leaves between tree species or populations acclimated to different environments together with a control of abiotic and biotic factors affecting pigments content and leaf optical properties.
    Źródło:
    Dendrobiology; 2015, 73
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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