Authors:T. Kondratiuk, T. Beregova, and L. Ostapchenko
The influence of culture fluid of a yeast-like fungus, melanin producer Pseudonadsoniella brunnea (Meripilaceae, Agaricomycotina) on pathogenic fungi of the genus Gibberella (anamorph of Gibberella fujikuroi, i.e.: Fusarium verticillioides) (Nectriaceae, Ascomycotina) is studied by using the agar diffusion method. The stable fungicidal effect of Ps. brunnea culture fluid on pathogenic fungi investigated found to be present. The diameter of the zones of absence of growth of test cultures of pathogenic fungi, those testified the fungicidal impact of Ps. brunnea culture fluid, found to be similar to the action of biocides belonging to the class of quaternary ammonium compounds (benzalkonium chloride).
Authors:Orsolya Molnár, Tibor Bartók, and Árpád Szécsi
.M. , Yates , I.E. , Bacon , C.W. : Detoxification of corn antimicrobial compounds as the basis for isolating Fusariumverticillioides and some other Fusarium species from corn . Appl Environ Microbiol 67 , 2973 – 2981 ( 2001
Ádám, A. L., García-Martínez, J., Szűcs, E. P., Avalos J. and Hornok, L. (2011): The MAT1-2-1 mating type gene up-regulates photo-inducible carotenoid biosynthesis in Fusariumverticillioides . FEMS Microbiol. Lett. 318, 76
Authors:Tibor Bartók, András Szekeres, Árpád Szécsi, Mihály Bartók, and Ákos Mesterházy
Fumonisins were extracted from a rice culture which had been inoculated with
isolated from maize stalk. The culture extracts were analysed by a hyphenated technique: reversed-phase high-performance liquid chromatography/electrospray ionization ion-trap mass spectrometry (RP-HPLC/ESI-IT MS
). Besides already known fumonisins, a new type of fumonisin series (PHFB4OSA belonging to the formerly described FBX)-containing four new compounds-was detected. At these compounds, one of the OH groups attached to the fumonisin backbone was esterified by carboxylic acid (oxalylsuccinic acid, OSA) other than tricarballylic acid (TCA). The masses of the protonated molecules and of the characteristic product ions and the characteristic neutral mass losses from the protonated molecules suggested their structure. The relative quantities of the new minor compounds were expressed as percentages of FB1 toxin.
Authors:Judit Szabó-Fodor, László Kametler, Roland Pósa, Rene Mamet, Veronika Rajli, Johann Bauer, Péter Horn, Ferenc Kovács, and Melinda Kovács
Fodor, J., Meyer, K., Riedlberger, M., Bauer, J., Horn, P., Kovács, F. Kovács, M. 2006a. Distribution and elimination of fumonisin analogues in weaned piglets after oral administration of Fusariumverticillioides fungal culture. Food Additives and
Authors:V. Parrag, Z. Gillay, Z. Kovács, A. Zitek, K. Böhm, B. Hinterstoisser, R. Krska, M. Sulyok, J. Felföldi, F. Firtha, and L. Baranyai
of maize samples was not artificially infected and exhibited natural levels of toxin. Two other groups were infected via injection of the spores through silk with Fusarium graminearum and Fusariumverticillioides , respectively. One group of
Authors:C. Bolduan, J. Montes, B. Dhillon, V. Mirdita, and A. Melchinger
Ear rots of maize caused by
spp. reduce grain yield and produce mycotoxins, which are harmful to humans and animals. To breed maize cultivars resistant to
spp., reliable large-scale phenotyping is essential. Our objectives were to (i) examine the precision of the ELISA method for determination of important mycotoxins, namely deoxynivalenol (DON) and fumonisins (FUM), (ii) evaluate the potential of near-infrared reflectance spectroscopy (NIRS) to estimate concentrations of DON and FUM in grain produced in inoculated maize plants, and (iii) compare the efficiency of ELISA, NIRS, and visual rating of disease severity for estimation of mycotoxin concentrations. Insignificant variation was observed between duplicate evaluations of DON and FUM by ELISA, showing the high repeatability of this method. DON and FUM determinations by ELISA were more closely correlated with mycotoxin concentrations predicted through NIRS than with visual rating of disease severity. For the prediction of DON, NIRS had very high magnitude of the coefficients of determination of calibration and cross validation (R
= 0.90–0.88). Thus, NIRS has a promising potential to predict DON concentration in grain samples of inoculated maize genotypes evaluated in resistance breeding programs.