Improving the adventitious rooting ability of hard-to-root olive (Olea europaea L.) cultivar cuttings through inhibiting strigolactone biosynthesis

Year 2022, Volume: 3 Issue: 3, 134 - 137, 30.12.2022

Aslıhan Özbilen , Fatih Sezer , [e-mail] [e-mail]

https://doi.org/10.51753/flsrt.1186955

Cited By: 3

Abstract

Strigolactones (SLs) are synthesized in roots and control plant development. As phytohormones, SLs regulate plant architecture, including roots. Recently, the inhibiting effects of SLs on adventitious rooting have been identified. Olive (Olea europaea L.) is consumed for oil and table in Mediterranean countries and is an economically important crop. Turkey is one of the countries with the highest olive production. Olive has mostly propagated asexually via cuttings, however, the rooting capacities of some agriculturally important olive cultivars are very low. Indole Butyric Acid (IBA) is commonly used to promote the rooting of olive cuttings, however, it can be inadequate. Ayvalık is an easy-to-root cultivar and one of the most common cultivars grown for oil production and Domat is a hard-to-root cultivar in which IBA is insufficient for inducing rooting. In our study, the effects of synthetic SLs rac-GR24 and SLs biosynthesis inhibitor TIS108 on the rooting ability of olive cuttings were investigated. As a result, the adventitious rooting ability was increased when a hard-to-root cultivar was treated with TIS108, indicating a promising future for olive-cutting rooting. Therefore, our study will provide potentially new tools for propagation strategies using SLs in fruit trees.

Keywords

Cutting rooting, GR24, Olive, Strigolactones, TIS108

Supporting Institution

TÜBİTAK

Project Number

215O543

Thanks

This study is based on a Ph.D. thesis entitled “Characterization of the Genes Involved in Strigolactone Biosynthesis in Olive (Olea europaea L.)” from Çanakkale Onsekiz Mart University, supported by The Scientific and Technological Research Council of Turkey (TUBITAK) with a Project Number 215O543 and COST Action (FA1206). We thank TUBITAK for their support and the doctoral scholarship (2211-A program). We also thank the Edremit Directorate of Olive Production Station (Edremit, Balıkesir) for providing the biological material.

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