Mycotoxin profiles in the grain of Triticum monococcum, Triticum dicoccum and Triticum spelta after head infection with Fusarium culmorum.
BACKGROUND
The aim of study was to investigate mycotoxin profiles in the grain of spring lines of Triticum monococcum (12 lines), T. dicoccum (13 lines) and T. spelta (five lines), in comparison to the T. aestivum cultivar Sumai-3 which is resistant to Fusarium head blight. The grain was obtained from control heads and heads artificially inoculated in the field with Fusarium culmorum. Mycotoxins were determined by LC-MS/MS.


RESULTS
A total of 11 toxins were identified in control grain samples. Deoxynivalenol (DON) concentrations exceeded 0.5 mg kg(-1) in only three samples of T. monococcum grain and in one sample of T. dicoccum grain. Inoculation with F. culmorum resulted in a substantial increase in the concentrations of DON (to 63 mg kg(-1)) in the T. monococcum and DON-3-glucoside (to 5.6 mg kg(-1)) in the T. dicoccum. Inoculation contributed to a drop in tentoxin levels (by 57% in T. spelta) and to an increase of cyclodepsipeptide concentrations (in particular enniatins B and B(1)) being two-fold (T. monococcum) to four-fold (T. dicoccum) higher on average than in control samples. The Sumai-3 responded to inoculation with nearly a two-fold drop in the levels of the cyclodepsipeptides.


CONCLUSIONS
The results of a discriminant analysis for all identified toxins indicate that einkorn, emmer and spelt differ significantly with regard to the mycotoxin profiles of their grain.
Suchowilska
Elzbieta
E
Department of Plant Breeding and Seed Production, University of Warmia and Mazury, pl. Łódzki 3, 10-727 Olsztyn, Poland.
Kandler
Wolfgang
W
Sulyok
Michael
M
Wiwart
Marian
M
Krska
Rudolf
R
D002523:Edible Grain / Q000737:chemistry* / Q000235:genetics / Q000382:microbiology; D005506:Food Contamination / Q000032:analysis*; D005670:Fusarium / Q000378:metabolism*; D020022:Genetic Predisposition to Disease; D007113:Immunity, Innate / Q000235:genetics*; D009183:Mycotoxins / Q000032:analysis*; D010935:Plant Diseases / Q000235:genetics / Q000382:microbiology; D013045:Species Specificity; D014908:Triticum / Q000737:chemistry* / Q000235:genetics / Q000382:microbiology
D009183:Mycotoxins