A biostimulant obtained from the seaweed ascophyllum nodosum protects arabidopsis thaliana from severe oxidative stress

Mohammad Amin Omidbakhshfard, Neerakkal Sujeeth, Saurabh Gupta, Nooshin Omranian, Kieran J. Guinan, Yariv Brotman, Zoran Nikoloski, Alisdair R. Fernie, Bernd Mueller-Roeber, Tsanko S. Gechev

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


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.

Original languageEnglish
Article number474
JournalInternational Journal of Molecular Sciences
Issue number2
StatePublished - 2 Jan 2020
Externally publishedYes


  • Arabidopsis thaliana
  • Ascophyllum nodosum
  • Biostimulant
  • Oxidative stress tolerance
  • Paraquat
  • Priming
  • Reactive oxygen species

ASJC Scopus subject areas

  • Catalysis
  • Molecular Biology
  • Spectroscopy
  • Computer Science Applications
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry


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