The risk of toxins byFusarium graminearum in wheat — interactions between weather and agronomic factors

Obst, A.; Lepschy, J.; Beck, R. H.; Bauer, G.; Bechtel, A.

doi:10.1007/bf02942972

Cited by 27 publications

(12 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(Obst et al 2000). The results shown inTables 1, 2, 3, and 4 demonstrate that cereals from the harvests of years 2002 and 2007 had a higher toxin contamination than that of the other years.…”

mentioning

confidence: 78%

“…Organic cultivation is characterized by the omission of maize as previous crop, traditional tillage, and by selection of relatively Fusarium-resistant cultivars. Furthermore, renunciation of using plant protectant and other chemicals such as fungicides or growth regulators (retardants) which are applied in integrated cultivation could contribute to the relatively low Fusarium contamination (and thus of the low toxin contents) in organically cultivated cereals (Meier et al 2000;Obst et al 2000;Oldenburg 2004). …”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Fusarium toxins in cereals of integrated and organic cultivation from the Federal State of Brandenburg (Germany) harvested in the years 2000–2007

Meister

2009

Mycotox Res

View full text Add to dashboard Cite

Over a period of 8 years (2000-2007), wheat (n = 407) and rye (n = 510) samples of integrated and organic cultivation in the Federal State of Brandenburg were analyzed by HPLC for the Fusarium toxins deoxynivalenol (DON) and zearalenone (ZEA). In the years 2002 and 2007, the overall contamination level was higher than in the other years. The percentage of DON-positives (>50 µg/kg) varied from 5 to 86%, the median and maximum levels varied from 50 to 380 µg/kg and from 50 to 10,400 µg/kg, respectively. The percentage of ZEA-positives (>3 µg/kg) varied from 2 to 41%, the median and maximum levels varied from 8 to 84 µg/kg and from 10 to 451 µg/kg. In the 8 years of testing, frequency and levels of DON and ZEA were significantly lower in cereals of organic cultivation compared with cereals of integrated cultivation.

show abstract

mentioning

confidence: 78%

Section: Discussionmentioning

confidence: 99%

Fusarium toxins in cereals of integrated and organic cultivation from the Federal State of Brandenburg (Germany) harvested in the years 2000–2007

Meister

2009

Mycotox Res

View full text Add to dashboard Cite

show abstract

“…Organic cultivation is characterized by the omission of maize as previous crop, traditional tillage, and by selection of relatively Fusarium-resistant cultivars. Furthermore, the ban of plant protectants and other chemicals such as fungicides or growth regulators (retardants) which are applied in integrated cultivation could contribute to the relatively low Fusarium contamination (and thus of the low toxin contents) in organically cultivated cereals (Meier et al, 2000;Obst et al, 2000;Oldenburg, 2004;Meister, 2009). Döll et al (2002), reported that in the case of non fungicide treatment, wheat from organic farming is more tolerant to Fusarium infection than wheat from conventional farming systems.…”

Section: Resultsmentioning

confidence: 99%

Fusarium mycotoxin content of Slovakian organic and conventional cereals

Remža¹,

Lacko-Bartošová²,

Kosík³

2016

JCEA

View full text Add to dashboard Cite

Many species of Fusarium fungi can produce a number of different mycotoxins including trichothecenes such as deoxynivalenol (DON), nivalenol (NIV), zearalenone (ZEA) and others. The farming system have an effect on quality of grown plants, including mycotoxin contamination. The contamination of winter wheat (Triticum aestivum L.) and rye grain by toxins with focus on the genus Fusarium was monitored within the years 2009 -2011 under the official control according to EC Regulation 401/2006 and 178/2010 on the territory of the Slovak Republic in organic and conventional grains. The concentration of deoxynivalenol (DON) was determined by HPLC/DAD detector and concentration of zearalenone (ZEA) by HPLC/FLD detector. Results of analysed samples showed that DON was the most prevalent Fusarium toxin. In the analysed samples were observed significant differences between organic and conventional wheat samples. Results showed that samples from organic production contained significantly lower contamination of DON and ZEA mycotoxins than from conventional production. In four wheat samples from conventional production was the content of DON over the EC Regulation no. 1881/2006 about setting the maximum levels for certain contaminants in foodstuff. Within the observed period, the highest DON concentrations were observed in the year 2010, in both wheat and rye samples, and organic and conventional production. The year 2010 was characterised by constant rain, moist soil on the most area of Slovakia. Since lower contamination of Fusarium toxins was found in wheat and rye from organic farming, it can be concluded, that factors related to agricultural practices in this system can reduce the risk of Fusarium mycotoxin contamination.

show abstract

“…metconazole and tebuconazole, were shown to be effective, particularly in experiments with additional Fusarium inoculation resulting in reductions of head blight severity and mycotoxin contamination by 50-80% and 5-90%, respectively (Matthies and Buchenauer 2000;Pirgozliev et al 2002;Chala et al 2003;Haidukowski et al 2005). In other experiments, however, fungicide applications resulted in an increased trichothecene accumulation (Gareis and Ceynowa 1994;Obst et al 2000). Strobilurin fungicides have been reported several times to increase DON production, although they can partially control FHB (Simpson et al 2001;Lienemann et al 2002;Menniti et al 2003;Mesterhazy et al 2003).…”

Section: Introductionmentioning

confidence: 95%

Effect of fungicides on the complex of Fusarium species and saprophytic fungi colonizing wheat kernels

et al. 2007

View full text Add to dashboard Cite

Fusarium head blight of wheat, often associated with mycotoxin contamination of food and feed is caused by various Fusarium species. The efficacy of fungicide sprays for the control of the disease and mycotoxins varies from being highly effective to even increasing mycotoxin levels. The potential role of antagonistic fungi in this variability was investigated assessing sensitivity of Fusarium species and saprophytic fungi colonizing wheat kernels to fungicides. Saprophytes were tested for their antagonistic activity to the prevalent Fusarium species Fusarium avenaceum, Fusarium culmorum, Fusarium graminearum, and Fusarium poae. Fungal isolates from mature winter wheat kernels were Alternaria alternata, Arthrinium sp., Aspergillus niger, Epicoccum sp., Microdochium spp., Rhizopus oryzae and Trichoderma sp. In dual culture A. niger, R. oryzae and Trichoderma hamatum were more effective in reducing mycelial growth of Fusarium species than Microdochium majus; A. alternata and Epicoccum sp. were ineffective because of slow growth rates. Saprophytic fungi were sensitive to triazoles; however, prothioconazole and tebuconazole had stronger effects on mycelial growth of Fusarium species. ED 50 values also indicated significant differences in the sensitivity of Fusarium species to triazoles (range 0.1-1.7 mg l −1 ). Azoxystrobin and fluoxastrobin were largely ineffective in inhibiting in vitro growth of Fusarium spp.; sensitivity of the other fungi was generally lower, except for M. majus which was highly sensitive. Due to differences in fungicide sensitivity among Fusarium spp. and ear-colonizing fungi antagonistic to Fusarium spp. fungicides are likely to modify the balance within the mycoflora of wheat ears which may also affect the mycotoxin contamination of grain.

show abstract

The risk of toxins byFusarium graminearum in wheat — interactions between weather and agronomic factors

Abstract: In the course of a Fusarium Monitoring for winter wheat in Bavaria five deoxynivalenol risk factors have been identified. The major Fusarium species wasF. graminearum, which usually has one disease cycle; under specific weather conditions obviously a bicyclic spread of the pathogen occurs.

Cited by 27 publications

References 2 publications

Fusarium toxins in cereals of integrated and organic cultivation from the Federal State of Brandenburg (Germany) harvested in the years 2000–2007

Fusarium toxins in cereals of integrated and organic cultivation from the Federal State of Brandenburg (Germany) harvested in the years 2000–2007

Fusarium mycotoxin content of Slovakian organic and conventional cereals

Effect of fungicides on the complex of Fusarium species and saprophytic fungi colonizing wheat kernels

Contact Info

Product

Resources

About