Fusarium oxysporum infection activates the plastidial branch of the terpenoid biosynthesis pathway in flax, leading to increased ABA synthesis
Aleksandra Boba , Kamil Kostyn , Bartosz Kozak , Wioleta Wojtasik , Marta Preisner , Anna Prescha , Edyta M. Gola , Dzmitry Lysh , Barbara Dudek , Jan Szopa , Anna Kulma
AbstractMain conclusion Upregulation of the terpenoid pathway and increased ABA content in fax upon Fusarium infection leads to activation of the early plant’s response (PR genes, cell wall remodeling, and redox status). Plants have developed a number of defense strategies against the adverse efects 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 fax. They can serve as antioxidants, but are also substrates for a plethora of diferent compounds, including those of regulatory functions, like ABA. ABA’s function during pathogen attack remains obscure and often depends on the specifc plant-pathogen interactions. In our study we showed that in fax 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 fax resistance to F. oxysporum, thus we suggest ABA to be a positive regulator of the plant’s early response to the infection.
|Journal series||Planta, ISSN 0032-0935, e-ISSN 1432-2048, (N/A 100 pkt)|
|Publication size in sheets||0.65|
|Keywords in English||ABA, Callose, Carotenoids, Flax, Infection, MEP pathway, Terpenoids|
|ASJC Classification||; ;|
|License||Journal (articles only); published final; ; with publication|
|Score||= 100.0, 15-09-2020, ArticleFromJournal|
|Publication indicators||= 0; = 0; : 2017 = 1.203; : 2018 = 3.06 (2) - 2018=3.408 (5)|
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