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Каталог книг и продолжающихся изданий библиотеки Института биофизики СО РАН (1)

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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Shevyrnogov A.P., Vysotskaya G.S., Gitelson J.I.
Заглавие : Quasistationary areas of chlorophyll concentration in the world ocean as observed satellite data
Место публикации : Advances in Space Research. - 1996. - Vol. 18, Is. 7. - С. 129-132. - ISSN 02731177 (ISSN) , DOI 10.1016/0273-1177(95)00955-8
Ключевые слова (''Своб.индексиров.''): chlorophyll concentration--chlorophylls--czcs--ocean chlorophyll concentration--phytopigment dynamics--productivity--quasistationary areas--remote sensing--satellite data--seasonal changes--world ocean
Аннотация: To estimate the seasonal progress of the production process over the planet and its long-standing trend it is important to measure not only the spatial distributions of pigment that represent the rates of photosynthesis but also their time variability. Anthropogenic impact on natural complexes can be efficiently estimated by satellite observations of phytopigment dynamics. This study presents CZCS satellite data processed to reveal spatial inhomogeneity in the seasonal course of chlorophyll concentration in the world ocean on a global scale. Areas with quasistationary and non-stationary seasonal changes in chlorophyll concentration are revealed for the 7.5 years period of CZCS operation. Areas in the world ocean with maximum absolute and relative differences in chlorophyll concentration during different seasons were found. Results are illustrated with a chart of areas in the Atlantic Ocean discerned by dynamic parameters.
Scopus
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Volova T.G., Kalacheva G.S., Zhilo N.O., Plotnikov V.F.
Заглавие : Physiological and biochemical properties of the alga Botryococcus braunii
Место публикации : Russian Journal of Plant Physiology. - 1998. - Vol. 45, Is. 6. - С. 775-779. - ISSN 10214437 (ISSN)
Ключевые слова (''Своб.индексиров.''): batch culture--botryococcus braunii--liquid hydrocarbons--productivity
Аннотация: The growth, productivity, and changes in the chemical composition of the green alga Botryococcus braunii Kutz H-252 were studied at different phases of growth in a luminostat culture. Modification of the Prat medium resulted in an increase in the alga yield to 3.9 g/l and a decrease in the generation time to 3-4 days. The specific growth rate during the exponential phase was 0.235/ day. These values are comparable with the best results obtained abroad. Among the pigments of B. braunii, besides chlorophylls a and b, carotene, lutein, neoxanthin, and violaxanthin were also identified. The highest content of these pigments, based on dry weight, was achieved during the exponential growth phase. During culture aging, there was an accumulation of carbohydrates and lipids in addition to a simultaneous decrease in the concentration of nitrogen-containing substances. It was discovered that this strain can synthesize liquid hydrocarbons. These hydrocarbons were found both in the alga biomass (ca. 1% of dry weight) and among the extracellular metabolites (up to 10.3 mg/l).
Scopus
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Pavlova A. M., Gaevskii N. A., Anishchenko O. V., Tikhomirova N. A., Tikhomirov A. A.
Заглавие : Influence of NaCl on Productivity and Fluorescence Parameters of Nasturtium officinale R. Br. and Its Relevance to Artificial Closed Ecosystems
Колич.характеристики :13 с
Коллективы : fundamental research program of the Russian Academy of SciencesRussian Academy of Sciences [56.1.4]
Место публикации : Russ. J. Plant Physiol.: PLEIADES PUBLISHING INC, 2021. - Vol. 68, Is. 6. - С. 1173-1185. - ISSN 1021-4437, DOI 10.1134/S1021443721050137. - ISSN 1608-3407(eISSN)
Примечания : Cited References:27. - This work was supported by the fundamental research program of the Russian Academy of Sciences for 2013-2020, project no. 56.1.4 Sustainability of Higher Plant Cenoses Grown on Nutrient Media with Mineralized Organic Waste in Closed Human-Inhabited Ecological Systems.
Предметные рубрики: CHLOROPHYLL FLUORESCENCE
SALT STRESS
TOLERANCE
PHOTOSYNTHESIS
Аннотация: Productivity values, sodium accumulation in aboveground biomass, and photosynthetic indices of watercress (Nasturtium officinale) leaves were investigated under conditions resembling artificial closed ecological systems (CES). The seedlings were grown on nutrient media with various NaCl concentrations (0.7, 1.4, and 1.8 g/L) for 7, 14, and 19 days after transferring them to saline solutions. The productivity of plants on the seventh day of their growth on saline media did not differ from that of control plants. The decrease in plant productivity was noted in all the treatments starting from the 14th day after transferring the plants to saline solutions. When NaCl concentration in the nutrient solution was raised from 0.7 to 1.8 g/L, a significant increase in relative Na+ content in plant tissues was observed, regardless of the duration of NaCl treatment. A substantial decrease in chlorophyll (a + b) to carotenoid content ratio was noted on the seventh and 14th days in plants grown at 1.8 g/L NaCl. In plants treated for 7 days with 0.7 and 1.4 g/L NaCl, the content of chlorophylls a and b and carotenoids was found to increase, which indicates the tolerance of N. officinale to CES conditions. The relative content of chlorophylls a and b in the light-harvesting chlorophyll (a + b) complex was independent of the extent of salinity. The maximum quantum yield of photosystem II reaction in N. officinale plants had typically high values (Y(II)(max) of 0.755 +/- 0.007). Using the Imaging Maxi version of the pulse amplitude-modulated (PAM) fluorometer, it was found that light curves for the effective quantum yield of photochemical and nonphotochemical fluorescence quenching (Y(II) and Y(NPQ), respectively) differed appreciably between the salt-treated and untreated plants in the case of long-term cultivation (19 days) at 0.7 and 1.4 g/L NaCl. The treatment with 1.8 g/L NaCl for the period from 14 to 19 days had no effect on light curves of Y(II) and Y(NPQ). It is argued that N. officinale can be used as a source of NaCl for humans under CES conditions.
WOS
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