Effects of Fusarium graminearum and Fusarium poae on disease parameters, grain quality and mycotoxin contamination in barley (part II)

MARÍA I DINOLFO; MAURO MARTÍNEZ; STENGLEIN, S. A.; MARÍA I DINOLFO; FERNANDO BIGANZOLI; STENGLEIN, S. A.; MAURO MARTÍNEZ; FERNANDO BIGANZOLI; L. D. RAMÍREZ ALBUQUERQUE; V E. FERNÁNDEZ PINTO; L. D. RAMÍREZ ALBUQUERQUE; V E. FERNÁNDEZ PINTO

JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE

JOHN WILEY & SONS LTD

Lugar: LOndres; Año: 2020 vol. 100 p. 3182 - 3191

0022-5142

BACKGROUND: Barley is one of the most sown crops in the world, with multiple uses such as human consumption, animal feedand for the malting industry. This crop is affected by different diseases, such as Fusarium Head Blight (FHB), that causes lossesin yield and quality. In the last years F. graminearum and F. poae were two of the most frequently isolated species in barleygrains, so the aim of this study was to evaluate the interaction between these Fusarium species and the effects on diseaseparameters, grain quality and mycotoxin contamination on five barley genotypes under field conditions.RESULTS: Statistical differences between Fusarium treatments for some parameters depending mainly on the year/genotypewere found. The results showed that the germination process was affected by both Fusarium species. As to grain quality andthe different hordein fractions, it was observed that F. graminearum affects preferentially D and C-hordeins. Different concentrations of nivalenol, deoxynivalenol and their acetylated derivatives (3-acetyl deoxynivalenol (3-ADON), 15-acetyl deoxynivalenol (15-ADON)) were detected.CONCLUSIONS: In the present work, no evidence of synergism between F. graminearum and F. poae were found regarding disease parameters and mycotoxin contamination. However, at least in the years with favorable climatic conditions to FHB development and depending on the barley genotype, a continuous monitoring is deemed necessary to prevent the negative impacton protein composition and germinative parameters