Occurrence of γ‐linolenic acid in compositae: A study of Youngia tenuicaulis seed oil

Tsevegsüren, N.; Aitzetmüller, K.; Vosmann, Klaus

doi:10.1007/s11745-999-0394-4

Cited by 11 publications

(10 citation statements)

References 26 publications

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“…Similar to the obtained results, oleic acid was also identified as the major MUFA and linoleic acid identified as the major PUFA in selected Centaurea species [8]. Linoleic acid has been detected in the fatty acids derived from some Asteraceae species [21][22][23]. Oleic and linoleic acid have the capability to lower blood cholesterol levels.…”

Section: Discussionsupporting

confidence: 78%

Fatty Acid Composition of the Aerial Parts of Some Centaurea Species in Elazig, Turkey

Erdoğan¹,

Gönenç²,

Çakılcıoğlu³

et al. 2014

Trop. J. Pharm Res

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Section: Discussionsupporting

confidence: 78%

Fatty Acid Composition of the Aerial Parts of Some Centaurea Species in Elazig, Turkey

Erdoğan¹,

Gönenç²,

Çakılcıoğlu³

et al. 2014

Trop. J. Pharm Res

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“…GLA is accumulated at a significant level by plants of certain genera that are particularly well represented within the Boraginaceae and Onagraceae, but it is also occasionally found in some taxa belonging to other plant families (Gunstone 1992; Tsevegsü ren and Aitzetmü ller 1993; Sayanova et al 1999a;Tsevegsü ren et al 1999a;Guil-Guerrero et al 2004). Finding of significant amounts of GLA in tissues of various Solanaceae genera like Lycium and Hyoscyamus (Tsevegsü ren et al 1999b; our unpublished results) prompted us to investigate the reasons for the absence of this fatty acid in other species of the same family, and particularly in Nicotiana tabacum.…”

Section: Introductionmentioning

confidence: 99%

Cloning and molecular characterisation of a Δ8-sphingolipid-desaturase from Nicotiana tabacum closely related to Δ6-acyl-desaturases

et al. 2007

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Investigation on the absence of Delta(6)-desaturase activity in Nicotiana tabacum has led to the cloning of a new desaturase gene from this organism (NTDXDES) that exhibited unexpected biochemical activity. Cladistic analysis shows clustering of NTDXDES together with functional Delta(6)-acyl-desaturases of near Solanales plants, such as Borago and Echium. This group lies apart from that of previously characterised Delta(8)-sphingolipid-desaturases, which also includes two putative tobacco members identified in this study. Moreover, strong expression of NTDXDES is found in leaves, flowers, fruits and developing seeds of tobacco plants that is highly dependent on the development phase, with transcriptional activity being higher at stages of active tissue growth. This pattern is similar to that showed by Delta(6)-acyl-desaturases characterised in Boraginaceae species. However, functional assays using a yeast expression system revealed that the protein encoded by NTDXDES lacks Delta(6)-desaturase activity, but instead it is able to desaturate sphingolipid substrates by introducing a double bond on the Delta(8)-position. These data indicate that NTDXDES represent a novel desaturase gene placed in a different evolutionary lineage to that of previously characterised Delta(8)-desaturases.

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“…is similar to that in Onagraceae (exclusively in all Oenothera spp., but not in all the other genera there), in Scrophulariaceae (where γ-linolenic acid was found so far only in Scrophularia and a few closely related species), in Asteraceae [e.g., in Saussurea and Youngia (16,17)], or in Ranunculaceae [exclusively in Anemone and Clematis (9), but not in all the other genera]. In the latter four plant families, however, only γ-linolenic acid is found and the second ∆6-FA, stearidonic acid, is absent.…”

Section: Discussionmentioning

confidence: 99%

Seed oil fatty acids of loasaceae—A new source of γ‐linolenic and stearidonic acids

Aitzetmüller¹,

Brühl²,

Weigend

2004

J Americ Oil Chem Soc

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The pharmaceutically interesting ∆6-FA 18:3∆6c, 9c,12c (γ-linolenic acid) and 18:4∆6c,9c,12c,15c (stearidonic acid) appear to have evolved independently several times during plant phylogenetic evolution. They typically occur in "clusters" of a few closely related species or genera in about a dozen different plant families throughout the plant kingdom. A hithertounknown "cluster of occurrence" has now been discovered in the New World plant family Loasaceae. γ-Linolenic and stearidonic acids occur exclusively in representatives of the newly described genus Nasa at significance levels of between 3 and 10% each. Nasa had recently been separated from the older, more broadly circumscribed genus Loasa. The two ∆6-FA were not found in the closely related genus Loasa sensu stricto, nor in a number of other representatives of Loasaceae.

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Occurrence of γ‐linolenic acid in compositae: A study of Youngia tenuicaulis seed oil

Cited by 11 publications

References 26 publications

Fatty Acid Composition of the Aerial Parts of Some <i>Centaurea</i> Species in Elazig, Turkey

Fatty Acid Composition of the Aerial Parts of Some <i>Centaurea</i> Species in Elazig, Turkey

Cloning and molecular characterisation of a Δ8-sphingolipid-desaturase from Nicotiana tabacum closely related to Δ6-acyl-desaturases

Seed oil fatty acids of loasaceae—A new source of γ‐linolenic and stearidonic acids

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