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Comparative fatty acid profiling of Indian seabuckthorn showed altitudinal gradient dependent species-specific variations

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Abstract

The present study provides the first comparative fatty acid profiling of the three Indian seabuckthorn species, collected from varying altitudes (2900–4300 masl) of Trans-Himalayas (Hippophae rhamnoides, H. tibetana) and Sikkim Himalayas (H. salicifolia) regions. Gas chromatography–mass spectrometry analysis showed variability in fatty acid composition of different seabuckthorn populations. Sikkim populations showed higher (1.28–1.6 folds) palmitic acid than Trans-Himalayan populations which possess higher linoleic (1.3–1.5 folds) and linolenic (1.6–1.8 folds) acids. Interestingly, a strong altitudinal gradient associated positive correlation was observed with the degree of unsaturation and PUFA content while negative correlation was observed with saturated fatty acids content of different seabuckthorn populations. H. salicifolia collected from Sikkim showed healthy ω-6:ω-3 ratio (closer to 1:1) of functional lipids exhibiting its better nutraceutical potential than other commonly used seed oils. Interestingly, H. tibetana from Losar showed higher (5.81) degree of unsaturation than Sikkim populations (3.5) suggesting its better stress tolerance trait. Chemo-taxonomic diversity analysis also formed two broad clusters of Trans-Himalayan and Sikkim populations which correlated with earlier taxonomic studies.

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Acknowledgements

This work was supported by financial assistance from Department of Biotechnology (IBSD/A1/P(PH-2)/4), Government of India to RD. BS is thankful to UGC and DBT for providing fellowship. Authors are thankful to Dr. Girish Mishra for kindly extending GC–MS facility for FAMEs analysis and critical suggestions.

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Correspondence to Renu Deswal.

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Sharma, B., Arora, S., Sahoo, D. et al. Comparative fatty acid profiling of Indian seabuckthorn showed altitudinal gradient dependent species-specific variations. Physiol Mol Biol Plants 26, 41–49 (2020). https://doi.org/10.1007/s12298-019-00720-1

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  • DOI: https://doi.org/10.1007/s12298-019-00720-1

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