Abstract
Climate change is bringing more frequent and intense heat waves over the last years. Under this circumstance, it is important to understand whether species can tolerate stress and which mechanisms are involved in this adaptation process. Olive tree (Olea europaea L.) have been known for centuries to be drought tolerant, but less is known about the impact on the physiological response of this species to heat. To understand how young olive plants deal with heat shock, one-year-old plants (cv. ‘Arbequina’), grown at 23 ± 2 °C, were exposed to heat, 40 °C, for 2 h. Relative water content, gas exchange, carbohydrates content, cell membrane permeability and lipid peroxidation were assessed immediately after heat exposure. The heat shock treatment compromised plant water status, photosynthesis and induced stomatal closure. However, neither membrane damage nor carbohydrates contents (total soluble sugars and starch) were affected. The results indicate that young olive plants can overcome short heat shock episodes.
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Acknowledgements
This work was supported by Portuguese Foundation for Science and Technology (FCT) through a doctoral fellowship of Márcia Araújo (SFRH/BD/116801/2016) and a post-doctoral fellowship of Maria Celeste Dias (SFRH/BPD/100865/2014). This work was financed by FCT/MEC through national funds and the co-funding by the FEDER, within the PT2020 Partnership Agreement, and COMPETE 2010, within the projects UID/BIA/04004/2013, UID/QUI/00062/2013 and UID/AGR/04033/2013.
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Araújo, M., Santos, C., Dias, M.C. (2018). Can Young Olive Plants Overcome Heat Shock?. In: Alves, F., Leal Filho, W., Azeiteiro, U. (eds) Theory and Practice of Climate Adaptation. Climate Change Management. Springer, Cham. https://doi.org/10.1007/978-3-319-72874-2_11
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