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Lipid, phenol and carotenoid changes in ‘Bianca’ grapevine leaves after mechanical wounding: a case study

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Abstract

Metabolic changes can occur in plants in response to abiotic stress. Extensive use of leaf discs (mechanical wounding) in studies regarding the effect on the biochemical response of the grapevine to different types of biotic stress makes it necessary to understand metabolic perturbation after injury. In this study, we investigate how mechanical wounding can affect the metabolism of grapevine leaf tissue using Bianca variety as case study. Two sizes of leaf discs (1.1 and 2.8 cm in diameter) were excised from leaves, and phenol, lipid and carotenoid perturbation were investigated 0, 6, 12, 24, 48, 96 and 120 h post cutting. In our study, we found an accumulation of molecules belonging to stilbenoid and stilbene classes such as trans-resveratrol, trans-piceide, Z-miyabenol C, E-cis-miyabenol C and ampelopsin D + quadrangularin A after abiotic stress. The increase in fatty acids such as linoleic acid, linolenic acid and oleic + cis-vaccenic acid during the first 12 h after injury, followed by a return to basal level, allowed us to surmise their role in response to abiotic stress, in particular to mechanical wounding in grapevine leaves. Different-sized discs caused a different response to the tissue, with a higher accumulation in 1.1-cm-diameter discs, especially of phenol compounds. The results of this work can be used to better understand metabolic changes due to biotic stress, having previous knowledge about the perturbation caused by abiotic stress.

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Acknowledgements

This research was supported by the FIRST International PhD program and ADP 2015/2016 project founded by the Autonomous Province of Trento.

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Correspondence to Urska Vrhovsek.

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Handling Editor: Hanns H. Kassemeyer

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Chitarrini, G., Zulini, L., Masuero, D. et al. Lipid, phenol and carotenoid changes in ‘Bianca’ grapevine leaves after mechanical wounding: a case study. Protoplasma 254, 2095–2106 (2017). https://doi.org/10.1007/s00709-017-1100-5

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  • DOI: https://doi.org/10.1007/s00709-017-1100-5

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