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полный	информационный	краткий

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Specificity of lipid composition in two Botryococcus strains, the producers of liquid hydrocarbons [Text] / T. G. Volova, G. S. Kalacheva, N. O. Zhila // Russ. J. Plant Physiol. - 2003. - Vol. 50, Is. 5. - P. 627-633, DOI 10.1023/A:1025636007023. - Cited References: 17 . - ISSN 1021-4437

РУБ Plant Sciences
Рубрики:
GREEN-ALGA BOTRYOCOCCUS
   BRAUNII
   CULTURES
   BATCH
   RACE
Кл.слова (ненормированные):
Botryococcus -- hydrocarbons -- structure -- mass spectra
Аннотация: The structure of liquid hydrocarbons and fatty acids produced by the green alga Botryococcus was identified. Two representatives of this alga, Botryococcus braunii Kutz, strain IPPAS H-252, introduced into culture earlier and an organism isolated for the first time from the Shira Lake, were used for this identification. Fatty acid composition of B. braunii, strain H-252, lipids was characterized by a high content of trienoic acids of C16-C18 series. The hydrocarbon composition of this strain was represented by straight-chain and branched-chain C14-C28 components; long-chain linear aliphatic C20-C27 hydrocarbons (54.4%) and 2,6,10,14-tetramethylhexadecane (20.5%) predominated among them. The strain H-252 differed in its fatty acid and hydrocarbon composition from the strains described earlier as Botryococcus braunii. The fatty acid composition of the Botryococcus isolate was represented mainly by C12-C32 saturated and monoenoic acids. The hydrocarbons formed by this isolate were represented by dienoic and trienoic components. C29 (48.9-56.3%) and C31 (11.1-16.3%) hydrocarbons predominated among the C23-C31 dienoic hydrocarbons, and C27, C29, and C31 trienoic hydrocarbons comprised 2.5-2.6% of total hydrocarbons. This type of hydrocarbons and the lipid fatty acid composition were characteristic for the race A of B. braunii.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Volova, T.G.; Kalacheva, G.S.; Zhila, N.O.

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The effect of temperature on the lipid composition of the green alga Botryococcus [Text] / G. S. Kalacheva [et al.] // Microbiology. - 2002. - Vol. 71, Is. 3. - P. 286-293, DOI 10.1023/A:1015898426573. - Cited References: 14 . - ISSN 0026-2617

РУБ Microbiology
Рубрики:
METABOLISM
CULTURES
BRAUNII
Кл.слова (ненормированные):
green alga -- lipids -- fatty acids -- temperature
Аннотация: The lipid composition of the green alga Botryococcus was studied at three different cultivation temperatures: suboptimal (18degreesC), optimal (25degreesC), and supraoptimal (32degreesC). Cultivation at the supraoptimal temperature was found to considerably inhibit the synthesis of nearly all intracellular lipids, except for triacylglycerides, and to influence their fatty acid composition. In particular, the content of trienoic fatty acids was significantly lower at the supraoptimal than at the optimal cultivation temperature. At the same time, the fatty acid composition of the extracellular lipids of the alga virtually did not depend on cultivation temperature.

WOS
Держатели документа:
Russian Acad Sci, Inst Biophys, Siberian Div, Krasnoyarsk 660036, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Kalacheva, G.S.; Zhila, N.O.; Volova, T.G.; Gladyshev, M.I.

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Using DCMU-fluorescence method for the identification of dominant phytoplankton groups [Text] / N. A. Gaevsky [et al.] // J. Appl. Phycol. - 2005. - Vol. 17, Is. 6. - P. 483-494, DOI 10.1007/s10811-005-2903-x. - Cited References: 28 . - ISSN 0921-8971

РУБ Biotechnology & Applied Microbiology + Marine & Freshwater Biology
Рубрики:
IN-VIVO
   CHLOROPHYLL FLUORESCENCE
   FLUOROMETRIC METHOD
   SITU
   PHOTOSYNTHESIS
   CYANOBACTERIA
   ALGAE
   EVOLUTION
   CULTURES
   LAKES
Кл.слова (ненормированные):
algae -- chlorophyll -- fluorescence -- vizualization
Аннотация: For the identification of ecologically significant dominant groups of phytoplanktonic algae a polychromatic DCMU-induced fluorescence method is recommended. A special fluorometer equipped with a system of replaceable filters is used to differentiate three regions of the spectrum (410 +/- 20, 510 +/- 20 and 540 +/- 10 nm) that can excite the basic light-harvesting pigments. Total and differential (for every algal taxon studied) chlorophyll a calculated from the fluorescence signals is in good agreement with biomass estimates from direct cell counts for several different trophic types of aquatic systems. This is made possible by the vizualization of the ratios of fluorescence signal values in their own coordinates: first, to decide whether it is necessary to correct linear equations in order to eliminate negative solutions; second, to determine the possibility of nulling the negative solution if a point is situated close to a side of the triangle; and third, to reduce the number of linear algebraic equations to two if the points are situated along one of the triangle sides or to one if the points are gathered at the apex. The polychromatic DCMU-induced fluorescence method can be used for monitoring natural phytoplankton populations to detect changes in their taxonomic structure.

WOS
Держатели документа:
Krasnoyarsk State Univ, Dept Biol, Krasnoyarsk, Russia
Russian Acad Sci, Inst Biophys, Siberian Branch, Krasnoyarsk, Russia
ИБФ СО РАН : 660036, Красноярск, Академгородок, д. 50, стр. 50

Доп.точки доступа:
Gaevsky, N.A.; Kolmakov, V.I.; Anishchenko, O.V.; Gorbaneva, T.B.

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