Author:
Ghassemi-Golezani Kazem,Nikpour-Rashidabad Neda,Samea-Andabjadid Samira
Abstract
AbstractThe performance of dill plant may be affected by adverse environments such as salinity. Thus, this research was designed to evaluate changes in chemical composition and antioxidant activity of seed essential oil of dill (Anethum graveolens L.) in response to salinity (0, 5, 10 and 15 dS/m) and 1 mM of each hormonal treatments (gibberellic acid, salicylic acid, and cytokinin). Salicylic acid (SA) reduced Na+ content of roots and leaves by 15.4%, 30.9% and 12.4%, 24.3%, but enhanced K+ content by 29.8%, 51.6% and 76.6%, 73.4% under moderate and severe salinities, respectively. Essential oil yield was enhanced with progressing seed filling, despite decreasing essential oil percentage. Percentage of essential oil was increased under low and moderate salinities. Hormonal treatments, particularly SA enhanced seed mass and essential oil percentage, leading to enhanced essential oil yield. The amounts of most constituents were enhanced under moderate salinity. Foliar spray of SA and CK (cytokinin) increased almost all essential oil components, except dill ether and dill apiole, while the GA3 (gibberellic acid) treatment reduced most of the constituents. The α-fenchol was only induced by salt stress. The β-pinene, 1-terpineol, cryptone, oxypeucedanin hydrate, α-thujene and P-α-dimethylstyrene were also specifically synthesized in SA treated plants under salinity. The highest TPC (total phenolic content) and antioxidant activity were recorded for essential oil of SA treated plants at mass maturity under moderate salinity. In general, the SA spray was the most effective treatment for improving essential oil quantity and quality of dill plants.
Publisher
Springer Science and Business Media LLC
Reference63 articles.
1. Osman, Y. A. A. & El-wahab, M. S. A. Economic evaluations for harvesting management of parsley (Petroselinium sativum crispum (Mill.) Nym) and dill (Anithum graveolens L.) plants under North Sinai conditions. Res. J. Agric. Biol. Sci. 5, 218–222 (2009).
2. Jana, S. & Shekhawat, G. S. Anethum graveolens: An Indian traditional medicinal herb and spice. Pharmacogn. Rev. 4, 179–184 (2010).
3. Shannon, M. C. & Grieve, C. M. Tolerance of vegetable crops to salinity. Sci. Hortic. 78, 5–38 (1998).
4. Rahali, F. Z. et al. Metabolite profiles of essential oils and molecular markers analysis to explore the biodiversity of Ferula communis: Towards conservation of the endemic giant fennel. Phytochemistry. https://doi.org/10.1016/j.phytochem.2016.01.012 (2016).
5. Abdollahi Mandoulakani, B., Eyvazpour, E. & Ghadimzadeh, M. The effect of drought stress on the expression of key genes involved in the biosynthesis of phenylpropanoids and essential oil components in basil (Ocimum basilicum L.). Phytochemistry 139, 1–7 (2017).