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Article

A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress

by 1,†, 2,*,†, 1,3,†, 1,4, 2, 1, 4,5, 1,5, 1,3,5 and 5,6
1
Max Planck Institute of Molecular Plant Physiology, Am Mühlenberg 1, 14476 Potsdam-Golm, Germany
2
BioAtlantis Ltd., Clash Industrial Estate, Tralee, V92 RWV5 Co. Kerry, Ireland
3
Molecular Biology, Institute of Biochemistry and Biology, University of Potsdam, Karl Liebknecht Str. 24-25, 14476 Potsdam-Golm, Germany
4
Bioinformatics, Institute of Biochemistry and Biology, University of Potsdam, Karl Liebknecht Str. 24-25, 14476 Potsdam-Golm, Germany
5
Department of Molecular Stress Physiology, Center of Plant Systems Biology and Biotechnology, 139 Ruski blvd., 4000 Plovdiv, Bulgaria
6
Department of Plant Physiology and Molecular Biology, University of Plovdiv, 24 Tsar Assen Str., 4000 Plovdiv, Bulgaria
*
Author to whom correspondence should be addressed.
M.A.O., N.S. & S.G. are joint first authors.
Int. J. Mol. Sci. 2020, 21(2), 474; https://doi.org/10.3390/ijms21020474
Received: 5 December 2019 / Revised: 26 December 2019 / Accepted: 9 January 2020 / Published: 11 January 2020
(This article belongs to the Special Issue ROS and Abiotic Stress in Plants)
Abiotic stresses cause oxidative damage in plants. Here, we demonstrate that foliar application of an extract from the seaweed Ascophyllum nodosum, SuperFifty (SF), largely prevents paraquat (PQ)-induced oxidative stress in Arabidopsis thaliana. While PQ-stressed plants develop necrotic lesions, plants pre-treated with SF (i.e., primed plants) were unaffected by PQ. Transcriptome analysis revealed induction of reactive oxygen species (ROS) marker genes, genes involved in ROS-induced programmed cell death, and autophagy-related genes after PQ treatment. These changes did not occur in PQ-stressed plants primed with SF. In contrast, upregulation of several carbohydrate metabolism genes, growth, and hormone signaling as well as antioxidant-related genes were specific to SF-primed plants. Metabolomic analyses revealed accumulation of the stress-protective metabolite maltose and the tricarboxylic acid cycle intermediates fumarate and malate in SF-primed plants. Lipidome analysis indicated that those lipids associated with oxidative stress-induced cell death and chloroplast degradation, such as triacylglycerols (TAGs), declined upon SF priming. Our study demonstrated that SF confers tolerance to PQ-induced oxidative stress in A. thaliana, an effect achieved by modulating a range of processes at the transcriptomic, metabolic, and lipid levels. View Full-Text
Keywords: Ascophyllum nodosum; Arabidopsis thaliana; biostimulant; paraquat; priming; oxidative stress tolerance; reactive oxygen species Ascophyllum nodosum; Arabidopsis thaliana; biostimulant; paraquat; priming; oxidative stress tolerance; reactive oxygen species
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MDPI and ACS Style

Omidbakhshfard, M.A.; Sujeeth, N.; Gupta, S.; Omranian, N.; Guinan, K.J.; Brotman, Y.; Nikoloski, Z.; Fernie, A.R.; Mueller-Roeber, B.; Gechev, T.S. A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress. Int. J. Mol. Sci. 2020, 21, 474. https://doi.org/10.3390/ijms21020474

AMA Style

Omidbakhshfard MA, Sujeeth N, Gupta S, Omranian N, Guinan KJ, Brotman Y, Nikoloski Z, Fernie AR, Mueller-Roeber B, Gechev TS. A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress. International Journal of Molecular Sciences. 2020; 21(2):474. https://doi.org/10.3390/ijms21020474

Chicago/Turabian Style

Omidbakhshfard, Mohammad A., Neerakkal Sujeeth, Saurabh Gupta, Nooshin Omranian, Kieran J. Guinan, Yariv Brotman, Zoran Nikoloski, Alisdair R. Fernie, Bernd Mueller-Roeber, and Tsanko S. Gechev 2020. "A Biostimulant Obtained from the Seaweed Ascophyllum nodosum Protects Arabidopsis thaliana from Severe Oxidative Stress" International Journal of Molecular Sciences 21, no. 2: 474. https://doi.org/10.3390/ijms21020474

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