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. 2018 Aug 16;23(8):2053.
doi: 10.3390/molecules23082053.

Biopesticide Activity from Drimanic Compounds to Control Tomato Pathogens

Iván Montenegro  1 , Alejandro Madrid  2 , Mauricio Cuellar  3   4 , Michael Seeger  5 , Juan Felipe Alfaro  6   7   8 , Ximena Besoain  9 , Juan Pablo Martínez  10 , Ingrid Ramirez  11 , Yusser Olguín  12 , Miryam Valenzuela  13   14
Affiliations

Biopesticide Activity from Drimanic Compounds to Control Tomato Pathogens

Iván Montenegro et al. Molecules. .

Abstract

Tomato crops can be affected by several infectious diseases produced by bacteria, fungi, and oomycetes. Four phytopathogens are of special concern because of the major economic losses they generate worldwide in tomato production; Clavibacter michiganensis subsp. michiganensis and Pseudomonas syringae pv. tomato, causative agents behind two highly destructive diseases, bacterial canker and bacterial speck, respectively; fungus Fusarium oxysporum f. sp. lycopersici that causes Fusarium Wilt, which strongly affects tomato crops; and finally, Phytophthora spp., which affect both potato and tomato crops. Polygodial (1), drimenol (2), isonordrimenone (3), and nordrimenone (4) were studied against these four phytopathogenic microorganisms. Among them, compound 1, obtained from Drimys winteri Forst, and synthetic compound 4 are shown here to have potent activity. Most promisingly, the results showed that compounds 1 and 4 affect Clavibacter michiganensis growth at minimal inhibitory concentrations (MIC) values of 16 and 32 µg/mL, respectively, and high antimycotic activity against Fusarium oxysporum and Phytophthora spp. with MIC of 64 µg/mL. The results of the present study suggest novel treatment alternatives with drimane compounds against bacterial and fungal plant pathogens.

Keywords: Fusarium oxysporum; Phytophthora; Pseudomonas syringae pv. tomato; clavibacter michiganensis; drimenol; isonordrimenone; polygodial.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Chemical structures of drimanes: (1) polygodial, (2) drimenol, (3) nordrimenone, and (4) isonordrimenone.
See this image and copyright information in PMC

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