Antifungal activity of aluminium-containing salts against the development of carrot cavity spot and potato dry rot
As an alternative to the use of synthetic chemical fungicides to control plant disease, aluminium-containing salts were evaluated for their effects on the mycelial growth of various fungal or fungus-like pathogens and their ability to control carrot cavity spot (Pythium sulcatum) and potato dry rot (Fusarium sambucinum). Results showed that various aluminium-containing salts provided strong inhibition of all the tested pathogens (Alternaria solani, Botrytis cinerea, F. sambucinum, P. sulcatum and Rhizopus stolonifer) with minimal inhibitory concentration of 1-10 mM. Aluminium chloride and aluminium sulphate were generally the most effective, inhibiting mycelial growth of pathogens by as much as 47% and 100%, respectively, at a salt concentration of 1 mM. Applied at 5 mM, aluminium sulphate also provided 28% and 100% inhibition of dry rot and cavity spot, respectively. Aluminium chloride (5 mM) reduced dry rot by 25% whereas aluminium lactate (5 mM) decreased cavity spot lesions by 86%. These results indicate that various aluminium-containing salts may provide an alternative to the use of synthetic fungicides to control these pathogens.
|Keywords||Aluminium, antimicrobial salt, cavity spot, crop protection, dry rot, plant disease|
|Journal||Annals of Applied Biology|
Kolaei, E.A., Cenatus, C., Tweddell, R.J., & Avis, T. (2013). Antifungal activity of aluminium-containing salts against the development of carrot cavity spot and potato dry rot. Annals of Applied Biology, 163(2), 311–317. doi:10.1111/aab.12056