Fusarium spp. and Microdochium nivale Infestation of Asymptomatic Wheat Kernels in Slovakia

Hudec, Kamil; Roháčik, T.

doi:10.1007/bf03543373

Cited by 8 publications

(3 citation statements)

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“…This could be attributed to the dramatic inhibition of their in vitro growth at temperatures > 25 °C. This was confirmed from other studies in European countries that showed that M. nivale isolates grew optimally at 20-25 °C (Brennan et al 2003;Doohan et al 2003) or even < 20 °C (Hudec and Roháčik 2003). In synthetic media, the fungi can grow at temperatures as low as − 6 °C and in the field at temperatures below 0 °C (Hömmö 1994;Ergon et al 2003).…”

Section: Physiological Factors Affecting Infection and Symptom Expressupporting

confidence: 62%

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

et al. 2020

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Key message Snow mold resistance is a complex quantitative trait highly affected by environmental conditions during winter that must be addressed by resistance breeding. Abstract Snow mold resistance in winter cereals is an important trait for many countries in the Northern Hemisphere. The disease is caused by at least four complexes of soilborne fungi and oomycetes of which Microdochium nivale and M. majus are among the most common pathogens. They have a broad host range covering all winter and spring cereals and can basically affect all plant growth stages and organs. Their attack leads to a low germination rate, and/or pre- and post-emergence death of seedlings after winter and, depending on largely unknown environmental conditions, also to foot rot, leaf blight, and head blight. Resistance in winter wheat and triticale is governed by a multitude of quantitative trait loci (QTL) with mainly additive effects highly affected by genotype × environment interaction. Snow mold resistance interacts with winter hardiness in a complex way leading to a co-localization of resistance QTLs with QTLs/genes for freezing tolerance. In practical breeding, a multistep procedure is necessary with (1) freezing tolerance tests, (2) climate chamber tests for snow mold resistance, and (3) field tests in locations with and without regularly occurring snow cover. In the future, resistance sources should be genetically characterized also in rye by QTL mapping or genome-wide association studies. The development of genomic selection procedures should be prioritized in breeding research.

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Section: Physiological Factors Affecting Infection and Symptom Expressupporting

confidence: 62%

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

et al. 2020

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“…Fusarium diseases of wheat (seedling blight, foot rot, scab and Fusarium head blight -FHB) are caused by a number of species, mostly by F. graminearum, F. culmorum, F. avenaceum, F. poae and M. nivale (Sutton 1982;Šrobárová & Eged 1992;Hudec & Roháčik 2003). F. graminearum predominates in North America and in Southern Europe, while F. culmorum and M. nivale predominate in cooler climates in Europe (Parry et al 1995).…”

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confidence: 99%

Influence of temperature and species origin on Fusarium spp. and Microdochium nivale pathogenicity to wheat seedlings

Hudec¹,

Muchová²

2010

Plant Prot. Sci.

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The influence of temperature and species origin on the in vitro growth rate and pathogenicity of Fusarium and Microdochium nivale (F. avenaceum, F. culmorum, F. graminearum, F. poae, and M. nivale) to wheat seedlings was examined. The mycelial growth of Fusarium avenaceum, F. culmorum, F. graminearum, and F. poae was the fastest at 25°C, and of M. nivale at 15°C. The isolates of F. culmorum, F. graminearum and F. poae originating from mountain regions grew significantly faster at 15°C than those from flatland regions. The isolates from flatland regions grew significantly faster at 25°C than those from mountain regions. F. culmorum and F. graminearum were the most pathogenic species to the root development. The retardation of wheat grain germination caused by the tested species was assessed in descending order: F. culmorum, F. graminearum, M. nivale, F. avenaceum, F. poae. The biomass growth retardation at 15°C was assessed in descending order: F. culmorum, F. graminearum, M. nivale, F. avenaceum, F. poae; at 25°C as follows: F. graminearum, F. culmorum, F. avenaceum, M. nivale, F. poae. The isolates of M. nivale and F. poae originating from mountain regions were significantly more pathogenic than those from flatland regions. The results suggest that there exist different temperature ecotypes and pathotypes of Fusarium species and Microdochium nivale across the territory of the Slovak Republic.

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“…Based on previous studies (Hudec and Roháčik, 2003) it could be hypothesized that fungicides applied against FHB have influence on associated Fusarium species spectrum in ears and kernels. The aim of this study was to estimate the relationship between fungicide efficacy and developed species spectrum on treated ears and kernels of winter wheat.…”

Section: Introductionmentioning

confidence: 99%

Changes of species spectrum associated with Fusarium head blight caused by fungicides

Hudec¹,

Kičinová²,

Mihók³

2019

JCEA

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Fusarium head blight (FHB) is a dangerous disease of cereals in case of yield losses and mycotoxin production. The aim of this work was to estimate the influence of used fungicides on species spectrum associated with Fusarium head blight (FHB). The study was realised in Slovakia on winter wheat by natural infection of FHB. The ears were sprayed with fungicides at beginning of flowering. After development of disease symptoms, fungicide efficacy was estimated, and Fusarium species spectrum were isolated and determined in laboratory. The fungicide efficacy against FHB achieved 60.2-88.3%. The highest effectivity was estimated by using of prothioconazole + tebuconazole and prothioconazole + fluoxastrobin, followed by dimoxystrobin + cyproconazole, metconazole, propiconazole + cyproconazole, and prochloraz + tebuconazole. F. graminearum was the most frequently isolated from the ears, followed by M. nivale, F. avenaceum, F. culmorum, and F. poae. Using of prothioconazole + tebuconazole, metconazole, prothioconazole + fluoxastrobin, and tebuconazole significantly decreased incidence of F. graminearum on infected ears. The incidence of M. nivale on ears was significantly increased by using of all fungicides in comparison with untreated control. The results suggest that the ear spraying by triazole fungicides could enhance the incidence of less susceptible Fusarium species in ears, especially M. nivale. The variability in fungicide efficacy of fungicides against FHB in agricultural praxis colud be affected besides multipathogen origin of FHB just by selective effect of fungicides on different Fusarium species.

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Fusarium spp. and Microdochium nivale Infestation of Asymptomatic Wheat Kernels in Slovakia

Cited by 8 publications

References 3 publications

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

Influence of temperature and species origin on Fusarium spp. and Microdochium nivale pathogenicity to wheat seedlings

Changes of species spectrum associated with Fusarium head blight caused by fungicides

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