Resistance against Fusarium graminearum and the relationship to β-glucan content in barley grains

Martin, Charlotte; Schöneberg, Torsten; Vogelgsang, Susanne; Morisoli, Romina; Bertossa, Mario; Mauch‐Mani, Brigitte; Mascher, Fabio

doi:10.1007/s10658-018-1506-8

Cited by 18 publications

(23 citation statements)

References 61 publications

(73 reference statements)

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“…Inoculation did not affect β -glucan content. Martin et al (2018) found a significant and inverse relationship between DON contamination and β -glucan content for covered barley after inoculation with F. graminearum. They suggested that high β -glucan content, probably because of its antioxidant activity, contributes to the resistance against toxin accumulation.…”

Section: Discussionmentioning

confidence: 83%

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Yield and quality of two hulless barley varieties after inoculation with Fusarium culmorum

Polišenská

Vaculová

Jirsa

et al. 2019

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The effect of F. culmorum inoculation on the yield and quality of grain of AF Cesar and AF Lucius barley varieties was monitored. Field experiments were conducted between 2015-2017 at two locations. In grain harvested from plots grown under natural infection conditions, the deoxynivalenol content was very low. Inoculation caused a decline in germination, a certain reduction in yield and a change in some qualitative parameters (reduction in protein and fiber content, increase in starch content), but the effect of inoculation was weak and significantly influenced by the environment and the variety. The β-glucan content was not affected by inoculation. The varieties differed significantly from each other in β-glucan content (AF Cesar > AF Lucius). The deoxynivalenol content of both varieties was comparable after the inoculation while it differed under conditions of the natural infection (AF Cesar < AF Lucius).

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Section: Discussionmentioning

confidence: 83%

“…In the case of AF Cesar, a significant drop in TKW has also been recorded across the data set. Significant dependence of TKW reduction in barley (in the range of 2-20%) on genotype and environment was also reported by Martin et al (2018). No comparative literature data are as yet available for hulless barley.…”

Section: Discussionmentioning

confidence: 91%

Yield and quality of two hulless barley varieties after inoculation with Fusarium culmorum

Polišenská

Vaculová

Jirsa

et al. 2019

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“…Hence, with the current data set, no clear tendency in β-glucan content variation could be identified. In a very similar study on barley grains, a 10% reduction of β-glucan content was observed in six barley varieties after inoculation with F. graminearum [ 41 ]. On one hand, the reduction of β-glucan content might be attributed to the β-glucanase activity observed from Fusarium pathogens [ 42 ].…”

Section: Discussionmentioning

confidence: 96%

“…The proportion of grains colonized with Fusarium was determined using the seed health tests method described in Vogelgsang et al [ 32 ] and used in Schöneberg et al [ 13 ] and Martin et al [ 41 ]. Essentially, the seed health test consists in the culture of surface sterilized grains on the Fusarium selective media containing pentachloronitrobenzene [ 13 ].…”

Section: Methodsmentioning

confidence: 99%

Responses of Oat Grains to Fusarium poae and F. langsethiae Infections and Mycotoxin Contaminations

Martin

Schöneberg

Vogelgsang

et al. 2018

Toxins

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Recent increases of Fusarium head blight (FHB) disease caused by infections with F. poae (FP) and F. langsethiae (FL) have been observed in oats. These pathogens are producers of nivalenol (NIV) and T-2/HT-2 toxin (T-2/HT-2), respectively, which are now considered major issues for cereal food and feed safety. To date, the impact of FP and FL on oat grains has not yet been identified, and little is known about oat resistance elements against these pathogens. In the present study, the impact of FL and FP on oat grains was assessed under different environmental conditions in field experiments with artificial inoculations. The severity of FP and FL infection on grains were compared across three field sites, and the resistance against NIV and T-2/HT2 accumulation was assessed for seven oat genotypes. Grain weight, β-glucan content, and protein content were compared between infected and non-infected grains. Analyses of grain infection showed that FL was able to cause infection on the grain only in the field site with the highest relative humidity, whereas FP infected grains in all field sites. The FP infection of grains resulted in NIV contamination (between 30-500 µg/kg). The concentration of NIV in grains was not conditioned by environmental conditions. FL provoked an average contamination of grains with T-2/HT-2 (between 15-132 µg/kg). None of the genotypes was able to fully avoid toxin accumulation. The general resistance of oat grains against toxin accumulation was weak, and resistance against NIV accumulation was strongly impacted by the interaction between the genotype and the environment. Only the genotype with hull-less grains showed partial resistance to both NIV and T-2/HT-2 contamination. FP and FL infections could change the β-glucan content in grains, depending on the genotypes and environmental conditions. FP and FL did not have a significant impact on the thousand kernel weight (TKW) and protein content. Hence, resistance against toxin accumulation remains the only indicator of FHB resistance in oat. Our results highlight the need for new oat genotypes with enhanced resistance against both NIV and T-2/HT-2 to ensure food and feed safety.

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“…As stated in Salgad et al [8], estimating such a relationship requires observations of FHB, DON, yield, test weight, and a proposed model of their relationship. Relationships between grain quality and FHB have been observed [9][10][11]. These relationships suggest the dollar returns from FHB management practices depend on the interaction among biological and economic factors.…”

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confidence: 97%

Disease Management and Estimated Effects on DON (Deoxynivalenol) Contamination in Fusarium Infested Barley

et al. 2019

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Fusarium head blight (FHB or scab) economically devastates barley production. FHB is predominantly caused by Fusarium graminearum and has resulted in major reductions in the quality of barley in the United States. The most common source of economic loss is through development of potent mycotoxins in the grain, the most prominent of which, in the United States, is deoxynivalenol (DON). DON levels can be managed through a variety of techniques. This study presents the estimate of the statistical relationship among DON contamination in barley, FHB incidence and severity, and a variety of disease management techniques. Data from 22 field studies and a survey of barley producers are used to estimate the relationship. Fungicide applications reduce DON in barley in general and via complementary interactions with the barley cultivar. Genetic FHB resistance in barley varieties is an important determinant of DON levels, as well as previous crop and factors related to time and location. Taking care to avoid rotations with FHB host crops immediately prior to barley is also important to reduce DON levels in barley. These become key inputs into barley producer decisions for evaluating the economic value of adopting FHB management techniques. DON in barley results in substantial price reductions, downgrading to feed barley, or even rejection for barley producers in the Northern Great Plains. Another consequence occurs when barley producers modify production choices, such as including crops less vulnerable to FHB [4].Management of FHB caused by F. graminearum relies on an integrated program using genetic resistance, fungicides, and cultural practices such as tillage, adjusting planting dates, and crop rotation. Employment of several management tools together has the greatest effect on decreasing losses due to FHB and DON in wheat [5,6]. Breeding resistance towards FHB remains a top priority to prevent economic losses as it holds potential for economical FHB control in barley. Limited host resistance has been an objective of wheat and barley cultivar breeding programs [1]. In wheat, the use of a moderately resistant (low DON accumulating) cultivar with a prothioconazole plus tebuconazole fungicide application when 50% of the main stems are at full head, currently provides the greatest amount of FHB and DON reduction in the Northern Great Plains [7].Observations of wheat yield loss from FHB are often reported anecdotally, and generally a statistical relationship between FHB and yield is not contemplated. As stated in Salgad et al. [8], estimating such a relationship requires observations of FHB, DON, yield, test weight, and a proposed model of their relationship. Relationships between grain quality and FHB have been observed [9][10][11]. These relationships suggest the dollar returns from FHB management practices depend on the interaction among biological and economic factors. Prior research has shown negative statistical relationships between FHB and wheat yield [8,12,13], however, damage from FHB is not always readily apparent i...

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Resistance against Fusarium graminearum and the relationship to β-glucan content in barley grains

Cited by 18 publications

References 61 publications

Yield and quality of two hulless barley varieties after inoculation with Fusarium culmorum

Yield and quality of two hulless barley varieties after inoculation with Fusarium culmorum

Responses of Oat Grains to Fusarium poae and F. langsethiae Infections and Mycotoxin Contaminations

Disease Management and Estimated Effects on DON (Deoxynivalenol) Contamination in Fusarium Infested Barley

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