ArticleJournal of applied genetics2014
Fatty acid composition and desaturase gene expression in flax (Linum usitatissimum L.).
Article in Journal of applied genetics, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 30 citations in OpenAlex.
- Effect of High Temperature and Drought on the Fatty Acid Composition of Oil of Different Linseed Varieties and Its Association with Gene Expression.International journal of molecular sciences · 2026Article
- Generation of Codon-Optimized Fad3 Gene Transgenic Bovine That Produce More n-3 Polyunsaturated Fatty Acids.Animals : an open access journal from MDPI · 2025Article
- Expression ofPlants (Basel, Switzerland) · 2024Article
- Transcriptomics of developing wild sunflower seeds from the extreme ends of a latitudinal gradient differing in seed oil composition.Plant direct · 2022Article
- Natural variations in stearoyl-acp desaturase genes affect the conversion of stearic to oleic acid in maize kernel.TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2017Article
- Structural organization of fatty acid desaturase loci in linseed lines with contrasting linolenic acid contents.Functional & integrative genomics · 2016Article
- QTL for fatty acid composition and yield in linseed (Linum usitatissimum L.).TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik · 2015Article
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Authors and funding
2 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Little is known about the relationship between expression levels of fatty acid desaturase genes during seed development and fatty acid (FA) composition in flax. In the present study, we looked at promoter structural variations of six FA desaturase genes and their relative expression throughout seed development. Computational analysis of the nucleotide sequences of the sad1, sad2, fad2a, fad2b, fad3a and fad3b promoters showed several basic transcriptional elements including CAAT and TATA boxes, and several putative target-binding sites for transcription factors, which have been reported to be involved in the regulation of lipid metabolism. Using semi-quantitative reverse transcriptase PCR, the expression patterns throughout seed development of the six FA desaturase genes were measured in six flax genotypes that differed for FA composition but that carried the same desaturase isoforms. FA composition data were determined by phenotyping the field grown genotypes over four years in two environments. All six genes displayed a bell-shaped pattern of expression peaking at 20 or 24 days after anthesis. Sad2 was the most highly expressed. The expression of all six desaturase genes did not differ significantly between genotypes (P = 0.1400), hence there were no correlations between FA desaturase gene expression and variations in FA composition in relatively low, intermediate and high linolenic acid genotypes expressing identical isoforms for all six desaturases. These results provide further clues towards understanding the genetic factors responsible for FA composition in flax.
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