Brassinosteroid Uygulamalarının Munstead Lavander Çeşidinde Bitki Gelişimi ile Sekonder Metabolit Üretimi Üzerine Etkileri

Brassinosteroids (BRs) are steroid phyotohormones that play roles in plant growth, secondary metabolite accumulation, stress response, and adaptation. Saffron (Crocus sativus L.) is an important plant with significant pharmacological effects due to its rich phytochemical content. Crocin, the main pigment of the saffron stigma, is a natural food colorant and has anti-cancer activity. In this study, the effects of 24-Epibrassinolide (EBL) at different concentrations (10-6 , 10-7 , 10-8 and 10-9 M) on corm (mother corm) and aerial part related parameters as well as the level of crocin in saffron were investigated. The experiment was conducted in a plant growth cabinet as randomized plots design with 3 replications. 24-Epibrassinolide treatments did not affect the rates of shoot emergence from saffron corms, while 10-8 and 10-9 M EBL treatments increased the number of active nodium and cormlet (daughter corm) as compared to control. All the applied EBL concentrations significantly increased the root and shoot lengths of saffron plants. The maximum number of flowers per plant was observed as a result of the 10-8 M EBL treatment. Exogenous treatment of 10-9 M EBL enhanced the crocin level by 96.0% compared to the control. This is the first study to evaluate the effects of BRs in saffron.

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QUANTITY AND QUALITY YIELD OF ESSENTIAL OIL FROM Mentha × piperita L. UNDER FOLIAR-APPLIED CHITOSAN AND INOCULA-TION OF ARBUSCULAR MYCORRHIZAL FUNGI

Goudarzian¹,

Pirbalouti²,

Hossaynzadeh³

2021

asphc

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Peppermint (Mentha × piperita L.) is cultivated for its benefits in pharmaceutical, medicinal, and cosmetic industries. The well-known essential oil of Mentha × piperita L. is widely produced and used all over the world. The aim of present study was to evaluate the impacts of different concentrations of chitosan on the quality and quantity of the essential oil from the aerial parts of peppermint under inoculation of the rhizomes of peppermint seedlings with arbuscular mycorrhizal fungi. Experimental treatments were arranged as factorial design in a completed random block design. The highest essential oil yield (2.4 mL 100 g–1 dry matter) was obtained from the peppermint plants under foliar sprayed at 5 g L–1 chitosan along the inoculum with arbuscular mycorrhizal fungi. For evaluation of phytochemical characteristics, the contents of the main constituents of the peppermint essential oils such as menthol, menthone, etc. (oxygenated monoterpenes and monoterpenes hydrocarbons) under different treatments were analyzed by GC-FID and GC/MS. Results indicated that using chitosan foliar meaningfully raised the amount of menthol, as the major constituent and quality index (>60% v/w), in the essential oil from the peppermint plants inoculation with arbuscular mycorrhizal, however, the plants under the foliar spray of chitosan (without inoculum) revealed the highest amounts of menthone and limonene. In conclusion, we found that the foliar-applied chitosan along inoculation with arbuscular mycorrhizal fungi can be improved quantity and quality active substances of Mentha × piperita L. such as the contents of essential oil, menthol, and balance menthol/menthone.

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Brassinosteroid Uygulamalarının Munstead Lavander Çeşidinde Bitki Gelişimi ile Sekonder Metabolit Üretimi Üzerine Etkileri

Cited by 3 publications

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Menthol, Balance of Menthol/Menthone, and Essential Oil Contents of Mentha × Piperita L. under Foliar-Applied Chitosan and Inoculation of Arbuscular Mycorrhizal Fungi

Menthol, Balance of Menthol/Menthone, and Essential Oil Contents of Mentha × Piperita L. under Foliar-Applied Chitosan and Inoculation of Arbuscular Mycorrhizal Fungi

The Effect of 24-Epibrassinolide Treatments at Different Concentrations on Some Growth Parameters and Crocin Level in Saffron (Crocus sativus L.)

QUANTITY AND QUALITY YIELD OF ESSENTIAL OIL FROM Mentha × piperita L. UNDER FOLIAR-APPLIED CHITOSAN AND INOCULA-TION OF ARBUSCULAR MYCORRHIZAL FUNGI

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