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Anaesthetic diethyl ether impairs long-distance electrical and jasmonate signaling in Arabidopsis thaliana

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    0553376 - ÚEB 2022 RIV FR eng J - Článek v odborném periodiku
    Jakšová, J. - Rác, M. - Bokor, B. - Petřík, Ivan - Novák, Ondřej - Reichelt, M. - Mithöfer, A. - Pavlovič, A.
    Anaesthetic diethyl ether impairs long-distance electrical and jasmonate signaling in Arabidopsis thaliana.
    Plant Physiology and Biochemistry. Roč. 169, DEC (2021), s. 311-321. ISSN 0981-9428
    Grant CEP: GA MŠk(CZ) EF16_019/0000738; GA MŠk(CZ) EF16_019/0000827
    Institucionální podpora: RVO:61389030
    Klíčová slova: Anaesthesia * Arabidopsis thaliana * Calcium * Electrical signal * Heat wounding * Jasmonic acid
    Obor OECD: Biochemistry and molecular biology
    Impakt faktor: 5.437, rok: 2021
    Způsob publikování: Open access

    General volatile anaesthetics (GVA) inhibit electrical signal propagation in animal neurons. Although plants do not have neurons, they generate and propagate electrical signals systemically from a local damaged leaf to neighbouring leaves. This systemic electrical signal propagation is mediated by ligand-gated glutamate receptor-like (GLR) channels. Here, we investigated the effect of GVA diethyl ether on the systemic electrical and further downstream responses in Arabidopsis thaliana. We monitored electrical signals, cytoplasmic Ca2+ level ([Ca2+]cyt), ultra-weak photon emission, amino acid contents, phytohormone response as well as gene expression in response to heat wounding during diethyl ether anaesthesia. We found complete suppression of electrical and [Ca2+]cyt signal propagation from damaged leaf to neighbouring systemic leaves upon diethyl ether treatment. Concomitantly, jasmonates (JAs) did not accumulate and expression of JA-responsive genes (AOS, OPR3, JAZ10) was not detected in systemic leaves. However local damaged leaves still showed increased [Ca2+]cyt and accumulated high level of JAs and JA-inducible transcripts. An exogenously added GLR ligand, L-glutamate, was not able to trigger Ca2+ wave in etherized plants indicating that GLRs are targeted by diethyl ether, but not specifically. The fact that GVA inhibit electrical signal propagation not only in animals but also in plants is intriguing. However, the cellular response is completely blocked only in systemic leaves, the local damaged leaf still senses damaging stimuli.
    Trvalý link: http://hdl.handle.net/11104/0328328

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