Тип публикации: статья из журнала
Год издания: 2009
Идентификатор DOI: 10.1134/S1021443709060090
Ключевые слова: Fontinalis antipyretica, fatty acids, acetylenic acids, seasonal dynamics, Acetylenic acids, Fatty acids, Fontinalis antipyretica, Seasonal dynamics, Bryophyta, Fontinalis antipyretica
Аннотация: Identification of lipid fatty acids (FA) and studying of their seasonal dynamics in water moss Fontinalis antipyretica from the Yenisei River were carried out by means of gas chromatography-mass spectrometry. FA composition of water moss was notable for a relatively low level of saturated acids and predominance of polyunsaturated acids (PUFA) with double bonds (accounting for more than 30% of total FA) and polyunsaturated acids with double and triple bonds (acetylenic acids, accounting for more than 40% of total FA). Among PUFA, alpha- and gamma-linolenic (18:3 omega 3 and 18:3 omega 6), arachidonic (20:4 omega 6), and eicosapentaenoic (20:5 omega 3) acids prevailed. Relative content of PUFA from omega 3-family was the greatest in spring, and the level of PUFA from omega 6-group was essentially the same throughout all the seasons. In the biomass of water moss, we identified seven acetylenic acids; among them octadeca-9,12-dien-6-ynoic (6a,9,12-18:3), octadeca-9,12,15-trien-6-ynoic (6a,9,12,15-18:4), and eicosa-11,14-dien-8-ynoic (8a,11,14-20:3) acids were predominant. For the first time, in the lipids of water moss we identified an acetylenic eicosa-11,14,17-trien-8-ynoic acid (8a,11,14,15-20:4). Relative content of acetylenic acids in the total FA was great throughout the entire period of investigation with the peak accumulation in summer. Owing to a steadily high level in the biomass of water moss and the lack of other producers of these acids in the ecosystem, acetylenic FA are highly specific biochemical markers useful for the investigation of trophic interactions between higher aquatic plants and zoobenthos.
Журнал: RUSSIAN JOURNAL OF PLANT PHYSIOLOGY
Выпуск журнала: Vol. 56, Is. 6
Номера страниц: 795-807
ISSN журнала: 10214437
Место издания: NEW YORK
Издатель: MAIK NAUKA/INTERPERIODICA/SPRINGER
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