INVESTIGADORES
CASTAGNARO Atilio Pedro
artículos
Título:
Elicitor-Based Biostimulant PSP1 Protects Soybean Against Late Season Diseases in Field Trials
Autor/es:
CHALFOUN, NADIA R.; DURMAN, SANDRA B.; GONZÁLEZ-MONTANER, JORGE; REZNIKOV, SEBASTIÁN; DE LISI, VICENTE; GONZÁLEZ, VICTORIA; MORETTI, ENRIQUE R.; DEVANI, MARIO R.; PLOPER, L. DANIEL; CASTAGNARO, ATILIO P.; WELIN, BJÖRN
Revista:
Frontiers in Plant Science
Editorial:
Frontiers Media S.A
Referencias:
Año: 2018 vol. 9
Resumen:
Currently, fungicide application in soybean production accounts for an important amountof global pesticide use, and it is therefore most desirable to find new healthier and moreenvironmental friendly alternatives for the phytosanitary management in this crop. In thisstudy, we present convincing evidence for effective induction of disease protection bythe agricultural biostimulant PSP1, a formulation based on the plant-defense elicitingactivity of the fungal protease AsES (Acremonium strictum elicitor subtilisin), in multiplefield trials in Argentina.PSP1 was shown to combine well with commercial spray adjuvants, an insecticide, aherbicide and fungicides used in Argentinian soybean production without losing anydefense-inducing activity, indicating an easy and efficient adaptability to conventionalsoybean production and disease management in the region. Results from multiplesoybean field trials conducted with different elite genotypes at several locations duringtwo consecutive growing seasons, showed that PSP1 is able to induce an enhancedpathogen defense which effectively reduced late season disease (LSD) developmentin field-grown soybean. This defense response seems to be broad-range as diseasedevelopment was clearly reduced for at least three different fungi causing LSDsin soybean (Septoria glycines, Cercospora kikuchii and Cercospora sojina). It wasnoteworthy that application of PSP1 in soybean alone gave a similar protection againstfungal diseases as compared to the commercial fungicides included in the field trials andthat PSP1 applied together with a fungicide at reproductive stages enhanced diseaseprotection and significantly increased grain yields.PSP1 is the first example of an elicitor-based strategy in order to efficiently controlmultiple fungal diseases under field conditions in the soybean crop. These resultsshow the feasibility of using induced resistance products as complements or even fullgoodreplacements to currently used chemical pesticides, fulfilling a role as importantcomponents of a more sustainable crop disease management system