ArticleInternational journal of molecular sciences2026
Molecular Characterization of Omega-3 Fatty Acid Desaturases Reveals Functional Conservation and Their Pivotal Role in Salt and Temperature Stress Adaptation in
Article in International journal of molecular sciences, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Omega-3 fatty acid desaturases (FAD3, FAD7, and FAD8) are key enzymes responsible for the production of α-linolenic acid (ALA), which is an essential polyunsaturated fatty acid regulating membrane stability and serves as a precursor for jasmonic acid. In this study, we performed a comprehensive genome-wide molecular characterization of omega-3 fatty acid desaturase genes across seven plant species. Phylogenetic analysis placed FAD3 and FAD7/FAD8 proteins in distinct clades, indicating functional divergence despite strong sequence conservation. Gene structure analysis revealed conserved exon-intron formation with a few unique features. Multiple sequence alignment and motif analysis revealed high sequence similarity with three histidine-rich boxes responsible for catalytic activity.
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