Double gamers — can modified natural regulators of higher plants act as antagonists against phytopathogens? The case of jasmonic acid derivatives

Abstrakt

As key players in biotic stress response of plants, jasmonic acid (JA) and its derivatives cover a specific and prominent role in pathogens-mediated signaling and hence are promising candidates for a sustainable management of phytopathogenic fungi. Recently, JA directed antimicrobial effects on plant pathogens has been suggested, supporting the theory of oxylipins as double gamers in plant-pathogen interaction. Based on these premises, six derivatives (dihydrojasmone and cis-jasmone, two thiosemicarbazonic derivatives and their corresponding complexes with copper) have been evaluated against 13 fungal species affecting various economically important herbaceous and woody crops, such as cereals, grapes and horticultural crops: Phaeoacremonium minimum, Neofusicoccum parvum, Phaeomoniella chlamydospora, Fomitiporia mediterranea, Fusarium poae, F. culmorum, F. graminearum, F. oxysporum f. sp. lactucae,F. sporotrichioides, Aspergillus flavus, Rhizoctonia solani,Sclerotinia spp. and Verticillium dahliae. The biological activity of these compounds was assessed in terms of growth inhibition and, for the two mycotoxigenic species A. flavus and F. sporotrichioides, also in terms of toxin containment. As expected, the inhibitory effect of molecules greatly varied amongst both genera and species; cis-jasmone thiosemicarbazone in particular has shown the wider range of effectiveness. However, our results show that thiosemicarbazones derivatives are more effective than the parent ketones in limiting fungal growth and mycotoxins production, supporting possible applications for the control of pathogenic fungi.

Autorzy

Nicolò Orsoni
Nicolò Orsoni
Francesca Degola
Francesca Degola
Luca Nerva
Luca Nerva
Franco Bisceglie
Franco Bisceglie
Giorgio Spadola
Giorgio Spadola
Walter Chittara
Walter Chittara
Valeria Terzi
Valeria Terzi
Stefano Delbono
Stefano Delbono
Roberta Ghizzoni
Roberta Ghizzoni
Caterina Morcia
Caterina Morcia
Francesco M. Restivo
Francesco M. Restivo
Giorgio Pelosi
Giorgio Pelosi
artykuł
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Angielski
2020
21
8681
otwarte czasopismo
CC BY 4.0 Uznanie autorstwa 4.0
ostateczna wersja opublikowana
w momencie opublikowania
2020-11-17
140
5,924
0
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