Genetic variation for resistance and mycotoxin content of European maize inoculated with<i>Fusarium graminearum</i>and<i>F. verticillioides</i>

Miedaner, Thomas; Löffler, Martin; Bolduan, C.; Kessel, Bettina; Ouzunova, Milena; Mirdita, Vilson; Melchinger, Albrecht E.

doi:10.1556/crc.36.2008.suppl.b.7

Cited by 6 publications

(9 citation statements)

References 10 publications

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“…Visual scoring can therefore be sufficient in selection work for GER resistance. For F. verticillioides , the infection severities are often significantly less and not as highly correlated to toxin levels (Miedaner et al. 2008); however, it was concluded that toxin analysis for both GER and FER are not necessary at all stages of breeding.…”

Section: Inheritance Genotypic Differences and Sources Of Resistancementioning

confidence: 99%

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Breeding for resistance to ear rots caused by Fusarium spp. in maize – a review

Mesterházy¹,

2011

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Ear rots caused by different Fusarium spp. are one of the most dangerous food and feed safety challenges in maize production. At present, the majority of the inbreds and hybrids are susceptible. Gibberella and Fusarium ear rots (caused by Fusarium graminearum and Fusarium verticillioides, respectively) are the two main diseases, but more than 10 further Fusarium spp. cause ear rots. Natural infection is initiated by a mixture of the local Fusarium spp

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Section: Inheritance Genotypic Differences and Sources Of Resistancementioning

confidence: 99%

“…Löffler et al. (2010a) and Miedaner et al. (2008) stress the testing of inbreds and hybrids in several locations with a single isolate or a mixture of isolates.…”

Section: Breeding Aspectsmentioning

confidence: 99%

Breeding for resistance to ear rots caused by Fusarium spp. in maize – a review

Mesterházy¹,

2011

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“…Maize is commonly affected by three main toxigenic fungi: F. graminearum , producer of deoxynivalenol and zearalenone, F. verticillioides , synthetizing more than hundred fumonisins (where FUM B 1 and B 2 have the highest importance), and A. flavus producing aflatoxins, the most important of which is AFB1. During warm and humid seasons, F. graminearum is more commonly found in maize; warmer and rather dry conditions are favorable to F. verticillioides ; and A. flavus is common in the warmest corn areas [ 2 , 3 , 4 ]. The ecological needs of these fungi are different; therefore, they can occur alone or combined.…”

Section: Introductionmentioning

confidence: 99%

“…Bolduan et al [ 49 ] calculated an unusually close correlation between ear rot and DON (r = 0.94) with respect to Fusarium ear rot (FER); the conclusion was that toxin analysis may not be necessary. In other cases, much lower correlations were found [ 3 ]. Correlation-breaking genotypes were also identified, indicating that a general agreement in maize would not be the case.…”

Section: Introductionmentioning

confidence: 99%

Updating the Methodology of Identifying Maize Hybrids Resistant to Ear Rot Pathogens and Their Toxins—Artificial Inoculation Tests for Kernel Resistance to Fusarium graminearum, F. verticillioides, and Aspergillus flavus

Mesterházy

Szieberth²,

Toldine

et al. 2022

JoF

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Resistance to toxigenic fungi and their toxins in maize is a highly important research topic, as mean global losses are estimated at about 10% of the yield. Resistance and toxin data of the hybrids are mostly not given, so farmers are not informed about the food safety risks of their grown hybrids. According to the findings aflatoxin regularly occurs at preharvest in Hungary and possibly other countries in the region can be jeopardized. We tested, with an improved methodology (two isolates, three pathogens, and a toxin control), 18 commercial hybrids (2017–2020) for kernel resistance (%), and for toxin contamination separately by two–two isolates of F. graminearum, F. verticillioides (mg/kg), and A. flavus (μg/kg). The preharvest toxin contamination was measured in the controls. Highly significant kernel resistance and toxin content differences were identified between hybrids to the different fungi. Extreme high toxin production was found for each toxic species. Only about 10–15% of the hybrids showed higher resistance to the fungal species tested and lower contamination level of their toxins. The lacking correlations between resistance to different fungi and toxins suggest that resistance to different fungi and response to toxin contamination inherits independently, so a toxin analysis is necessary. For safety risk estimation, separated artificial and natural kernel infection and toxin data are needed against all pathogens. Higher resistance to A. flavus and F. verticillioides stabilizes or improves feed safety in hot and dry summers, balancing the harmful effect of climate changes. Resistance and toxin tests during variety registration is an utmost necessity. The exclusion of susceptible or highly susceptible hybrids from commercial production results in reduced toxin contamination.

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“…Genetic resistance to ear rot and mycotoxin content has been found in European maize inoculated with F. graminearum and F. verticillioides [24]. Maize genetics and breeding studies have guided strategies to improve resistance to fumonisin accumulation [6].…”

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confidence: 99%

Identification and Characterization of Toxigenic Fusaria Associated with Sorghum Grain Mold Complex in India

et al. 2010

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Fusarium species are dominant within the sorghum grain mold complex. Some species of Fusarium involved in grain mold complex produce mycotoxins, such as fumonisins. An attempt was made to identify Fusarium spp. associated with grain mold complex in major sorghum growing areas in India through AFLP based grouping of the isolates and further confirmation of the species by sequencing part of α-Elongation factor gene and comparing the sequences with that available in NCBI database. The dendrogram generated from the AFLP data clustered the isolates into 5 groups. Five species of Fusarium -F. proliferatum, F. thapsinum, F. equiseti, F. andiyazi and F. sacchari were identified based on sequence similarity of α-Elongation factor gene of the test isolates with those in NCBI database. Fusarium thapsinum was identified as predominant species in Fusarium -grain mold complex in India and F. proliferatum as highly toxigenic for fumonisins production. Analysis of molecular variance (AMOVA) revealed 54% of the variation in the AFLP patterns of 63 isolates was due to the differences among Fusarium species and 46% was due to differences among the strains within a species.

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Genetic variation for resistance and mycotoxin content of European maize inoculated withFusarium graminearumandF. verticillioides

Cited by 6 publications

References 10 publications

Breeding for resistance to ear rots caused by Fusarium spp. in maize – a review

Breeding for resistance to ear rots caused by Fusarium spp. in maize – a review

Updating the Methodology of Identifying Maize Hybrids Resistant to Ear Rot Pathogens and Their Toxins—Artificial Inoculation Tests for Kernel Resistance to Fusarium graminearum, F. verticillioides, and Aspergillus flavus

Identification and Characterization of Toxigenic Fusaria Associated with Sorghum Grain Mold Complex in India

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