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Fusarium oxysporum infection activates the plastidial branch of the terpenoid biosynthesis pathway in flax, leading to increased ABA synthesis

Authors
  • Boba, Aleksandra1
  • Kostyn, Kamil2
  • Kozak, Bartosz2
  • Wojtasik, Wioleta1
  • Preisner, Marta2
  • Prescha, Anna3
  • Gola, Edyta M.4
  • Lysh, Dzmitry1
  • Dudek, Barbara1
  • Szopa, Jan2
  • Kulma, Anna1
  • 1 University of Wroclaw, Przybyszewskiego 63/77, Wrocław, 51-148, Poland , Wrocław (Poland)
  • 2 Wroclaw University of Environmental and Plant Sciences, Plac Grunwaldzki 24A, Wrocław, 53-363, Poland , Wrocław (Poland)
  • 3 Wroclaw Medical University, ul. Borowska 211, Wrocław, 50-556, Poland , Wrocław (Poland)
  • 4 University of Wrocław, Kanonia 6/8, Wrocław, 50-328, Poland , Wrocław (Poland)
Type
Published Article
Journal
Planta
Publisher
Springer-Verlag
Publication Date
Jan 16, 2020
Volume
251
Issue
2
Identifiers
DOI: 10.1007/s00425-020-03339-9
Source
Springer Nature
Keywords
License
Green

Abstract

Main conclusionUpregulation of the terpenoid pathway and increased ABA content in flax uponFusarium infection leads to activation of the early plant’s response (PR genes, cell wall remodeling, and redox status).AbstractPlants have developed a number of defense strategies against the adverse effects of fungi such as Fusarium oxysporum. One such defense is the production of antioxidant secondary metabolites, which fall into two main groups: the phenylpropanoids and the terpenoids. While functions and biosynthesis of phenylpropanoids have been extensively studied, very little is known about the genes controlling the terpenoid synthesis pathway in flax. They can serve as antioxidants, but are also substrates for a plethora of different compounds, including those of regulatory functions, like ABA. ABA’s function during pathogen attack remains obscure and often depends on the specific plant-pathogen interactions. In our study we showed that in flax the non-mevalonate pathway is strongly activated in the early hours of pathogen infection and that there is a redirection of metabolites towards ABA synthesis. The elevated synthesis of ABA correlates with flax resistance to F. oxysporum, thus we suggest ABA to be a positive regulator of the plant’s early response to the infection.

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