Yedi Akdeniz Lamiaceae Türünün Duman ve Duman Kökenli Bileşiklere Olan Çimlenme Tepkisi

Year 2021, Volume: 7 Issue: 4, 478 - 485, 15.12.2021

Şükrü Serter Çatav Kenan Akbaş

https://doi.org/10.28979/jarnas.936432

Cited By: 2

Abstract

− Bitki kökenli dumanın, Akdeniz tipi ekosistemlerde yetişen birçok Lamiaceae türünün çimlenmesini tetiklediği gösterilmiştir. Bununla birlikte, Lamiaceae türlerinin karrikinolid (KAR1) ve siyanohidrin gibi duman kökenli bileşik-lere olan çimlenme tepkileri hakkında çok az şey bilinmektedir. Bu nedenle, bu çalışmada, duman bileşiklerin yedi Akdeniz Lamiaceae türünde (Ballota acetabulosa, Lavandula stoechas subsp. stoechas, Origanum onites, Phlomis bourgaei, P. lycia, Stachys cretica subsp. smyrnaea ve Teucrium chamaedrys) tohum çimlenmesi üzerindeki etkile-rini belirlemeyi amaçladık. Bu hedefe ulaşmak için çalışma türlerinin tohumları farklı konsantrasyonlarda duman-suyu, KAR1, mandelonitril (MAN) ve KAR1 + MAN’a maruz bırakılmıştır. Uygulama gruplarına ait tohumlar daha sonra karanlık koşullarda 20 °C'de inkübe edilmiş ve 35 gün boyunca haftada iki kez çimlenme sayımları yapıl-mıştır. Sonuçlarımız, dumanın kontrol koşullarına göre B. acetabulosa, P. lycia ve S. cretica'nın çimlenme yüzde-lerinde önemli bir artışa yol açtığını göstermektedir. KAR1, B. acetabulosa ve S. cretica'nın çimlenmesini uyarırken, MAN uygulamaları Lamiaceae türlerinin çimlenmesini teşvik etmemiştir. KAR1 ve MAN kombinasyonu dumana duyarlı üç türün çimlenmesini tetiklemekle kalmamış, aynı zamanda T. chamaedrys'in çimlenme yüzdesini de önemli ölçüde arttırmıştır. Sonuç olarak, çalışmamız, dumanın Lamiaceae türlerinin çimlenmesi üzerinde olumlu bir etkiye sahip olduğu fikrini desteklemekte ve KAR1 ve siyanohidrinin birlikte uygulanmasının, tohum çimlenme-sinin uyarılmasında, bu iki bileşiğin ayrı ayrı uygulanmasına göre daha etkili olduğuna dair kanıtlar sağlamaktadır

Keywords

karrikinolid, Lamiaceae, siyanohidrin, tohum çimlenmesi

Supporting Institution

Muğla Sıtkı Koçman Üniversitesi Öğretim Üyesi Yetiştirme Programı (ÖYP) Koordinatörlüğü

Germination Response of Seven Mediterranean Lamiaceae Species to Smoke and Smoke-derived Compounds

Abstract

Abstract − Plant-derived smoke has been shown to trigger germination of many Lamiaceae species growing in Mediterranean-type ecosystems. However, very little is known about the germination response of Lamiaceae species to smoke-derived compounds, such as karrikinolide (KAR1) and cyanohydrin. In this work, therefore, we aimed to ascertain the effects of smoke-derived compounds on seed germination in seven Mediterranean Lamiaceae species (Ballota acetabulosa, Lavandula stoechas subsp. stoechas, Origanum onites, Phlomis bourgaei, P. lycia, Stachys cretica subsp. smyrnaea, and Teucrium chamaedrys). To achieve this goal, seeds of study species were exposed to different concentrations of smoke-water, KAR1, mandelonitrile (MAN), and KAR1 + MAN. Seeds from treatment groups were then incubated at 20 °C in dark conditions, and germination counts were made twice weekly for 35 days. Our results show that smoke leads to a significant increase in germination percentage of B. acetabulosa, P. lycia, and S. cretica as compared to control conditions. KAR1 stimulated the germination of B. acetabulosa and S. cretica while MAN treatments did not promote the germination of Lamiaceae species. The combination of KAR1 and MAN not only induced the germination of three smoke-sensitive species but also notably increased the germination percentage of T. chamaedrys. In conclusion, our study supports the idea that smoke has a positive impact on the germination of Lamiaceae species and provides evidence that combined application of KAR1 and cyanohydrin is more effective in the stimulation of seed germination than the separate application of these two compounds.

Keywords

Lamiaceae, Cyanohydrin, karrikinolide, Lamiaceae, plant-derived smoke, seed germination

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