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VOL. 7, ISSUE 3 (2025)
Effects of indole-3-butyric acid and water stress on the fatty acid profile of Ocimum basilicum L. and Ocimum kilimandscharicum Gürke
Authors
Shahad Khalil Ibrahem, Alaa Hussain Ali
Abstract
This study demonstrated that treating sweet basil (Ocimum basilicum
L.) and camphor basil (Ocimum kilimandscharicum Guerke) with the
growth regulator indole-3-butyric acid (IBA) at a concentration of 0.075 ppm,
under varying levels of water stress, significantly influenced the fatty acid
composition, particularly enhancing unsaturated fatty acids. GC-FID analysis
revealed linoleic acid (C18:2n6) as the dominant fatty acid in all samples,
followed by oleic and palmitic acids. The application of IBA promoted the
activity of desaturase enzymes, which introduced additional double bonds into
fatty acid chains, thereby improving membrane fluidity and stability under
stress. Camphor basil exhibited a stronger response to IBA, accumulating
linoleic acid concentrations exceeding 93% under 0.075 ppm IBA, which reduced
overall fatty acid diversity. In contrast, sweet basil maintained a more
balanced fatty acid profile. These findings highlight the role of IBA in
enhancing the nutritional and therapeutic quality of basil essential oils and
emphasize the importance of optimizing both hormonal treatments and irrigation
practices to boost productivity and stress tolerance in basil cultivated in
arid and semi-arid environments.
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Pages:75-82
How to cite this article:
Shahad Khalil Ibrahem, Alaa Hussain Ali "Effects of indole-3-butyric acid and water stress on the fatty acid profile of <i>Ocimum basilicum L</i>. and <i>Ocimum kilimandscharicum Gürke</i>". International Journal of Agriculture and Plant Science, Vol 7, Issue 3, 2025, Pages 75-82
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