Fatty acid composition of individual polar lipid classes from marine macrophytes

Sanina, N. M.; Goncharova, S. N.; Kostetsky, E. Ya.

doi:10.1016/j.phytochem.2004.01.013

Cited by 131 publications

(109 citation statements)

References 29 publications

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“…According to Graeve et al (2002), Polar macroalgae are rich in polyunsaturated fatty acids (PUFA), which are constituents of the phospholipids. Generally, biological activity is related to the essential PUFAs, and especially, phospholipids are considerably important for the functionality of photosynthetic membranes (Sanina et al 2004;Aro et al 2005). It is essential to all organisms to maintain membranes operative, especially those containing the photosynthetic machinery, in a wide range of changing environmental factors.…”

Section: Discussionmentioning

confidence: 99%

Photosynthesis and lipid composition of the Antarctic endemic rhodophyte Palmaria decipiens: effects of changing light and temperature levels

2010

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In coastal waters, Antarctic rhodophytes are exposed to harsh environmental conditions throughout the year, like low water temperatures ranging from ¡1.8°C to 2°C and high light during the summer season. Photosynthetic performance under these conditions may be aVected by slowed down enzymatic reactions and the increased generation of reactive oxygen species. The consequence might be a chronic photoinhibition of photosynthetic primary reactions related to increased fragmentation of the D1 reaction centre protein in photosystem II. It is hypothesized that changes in lipid composition of biomembranes may represent an adaptive trait to maintain D1 turnover in response to temperature variation. The interactive eVects of high light and low temperature were studied on an endemic Antarctic red alga, Palmaria decipiens, sampled from two shore levels, intertidal and subtidal, and exposed to mesocosm experiments using two levels of natural solar radiation and two diVerent temperature regimes (2-5°C and 5-10°C). During the experimental period of 23 days, maximum quantum yield of photosynthesis decreased in all treatments, with the intertidal specimens exposed at 5-10°C being most aVected. On the pigment level, a decreasing ratio of phycobiliproteins to chlorophyll a was found in all treatments. A pronounced decrease in D1 protein concentration occurred in subtidal specimens exposed at 2-5°C. Marked changes in lipid composition, i.e. the ratio of saturated to unsaturated fatty acids, indicated an eVective response of specimens to temperature change. Results provide new insights into mechanisms of stress adaptation in this key species of shallow Antarctic benthic communities.

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Section: Discussionmentioning

confidence: 99%

Photosynthesis and lipid composition of the Antarctic endemic rhodophyte Palmaria decipiens: effects of changing light and temperature levels

2010

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“…Finally, GC-MS analyses were carried out to confirm the presence of other antioxidant constituents in the pooled fractions (Table 5). Several previous studies described the composition of these primary metabolites in algae (Apt & Behrens, 1999;Arendt et al, 2005;Cardozo et al, 2002;Sanina et al, 2004). Although controversial in the literature, fatty acid profiles have been used as a chemotaxonomic tool to identify brown, red and green algae (Dawczynski et al, 2007).…”

Section: Resultsmentioning

confidence: 99%

Antioxidant activity and chemical composition of the non polar fraction of Gracilaria domingensis (Kützing) Sonder ex Dickie and Gracilaria birdiae (Plastino & Oliveira)

Guaratini

Lopes

Marinho‐Soriano³

et al. 2012

Rev. bras. farmacogn.

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Gracilaria domingensis (Kützing) Sonder ex Dickie and Gracilaria birdiae (Plastino & Oliveira) (Gracilariales, Rhodophyta) are seaweeds that occur on the Brazilian coast. Based on their economic and pharmaceutical importance, we investigated the antioxidant activity of the methanolic, ethyl acetate and hexane extracts of both species. The hexane extracts display a high antioxidant activity and comparative analyses indicated G. birdiae as the most active species. Chemical investigation of these fractions showed several carotenoids and fatty acids, as well as cholesterol and sitosterol derivatives. HPLC-DAD analysis of G. birdiae showed violaxanthin (0.04 μg.mg -1 of dry material), antheraxanthin (5.31 μg.mg -1 ), aloxanthin (0.09 μg.mg -1 ), zeaxanthin (0.45 μg.mg -1 ) and β-carotene (0.37 μg.mg -1 ) as the major carotenoids. G. domingensis showed a similar carotenoid profi le, however, with much lower concentration than G. birdiae. Gas chromatography coupled to mass spectrometry was used to determine other nonpolar compounds of these seaweeds. The main compounds detected in both studied species were the fatty acids 16:0; 18:1 Δ 9 ; 20:3 Δ 6,9,12 , 20:4 Δ 5,8,11,14 . We found no specifi city of compounds in either species. However, G. birdiae, presented higher contents of carotenoids and arachidonic acid than G. domingensis.

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“…Diatoms produce PUFA-containing MGDGs, though C18 unsaturated fatty acids were not associated with MGDG in one common marine diatom (Arao et al, 1994). Some species of red and brown algae produce significant amounts of C18-PUFA-rich MGDG (Sanina et al, 2004). Cyanobacteria have the ability to make MGDG, though through a different pathway than higher plants (Awai et al, 2006) and it is unclear whether those MGDG compounds contain C18 PUFAs.…”

Section: Pufa-rich Mgdg Decreases In Zooxanthellae From Thermally Strmentioning

confidence: 99%

Lipid biomarkers of coral stress : calibration and exploration

Kneeland¹

2011

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Fatty acid composition of individual polar lipid classes from marine macrophytes

Cited by 131 publications

References 29 publications

Photosynthesis and lipid composition of the Antarctic endemic rhodophyte Palmaria decipiens: effects of changing light and temperature levels

Photosynthesis and lipid composition of the Antarctic endemic rhodophyte Palmaria decipiens: effects of changing light and temperature levels

Antioxidant activity and chemical composition of the non polar fraction of Gracilaria domingensis (Kützing) Sonder ex Dickie and Gracilaria birdiae (Plastino & Oliveira)

Lipid biomarkers of coral stress : calibration and exploration

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