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Field inoculation experiments were performed during 2015–2017, in south-eastern part of Poland. The pathogenicity of F. crookwellense was estimated based on the kernels yield reduction of 10 selected oat genotypes. Panicles of oat were inoculated with conidial suspension of F. crookwellense strain No. 72 which caused a reduction in kernels yield by 28.54% and kernels number per panicle by 28.07%,...
Armillaria root disease is one of the most important diseases causing losses in forestry, horticulture, pomiculture and agriculture. Fungi from Armillaria spp. infest roots and stem base in trees and shrubs, causing white wood rot. In Poland the most common species include Armillaria ostoyae (Romagn.) Herink, found both in coniferous and deciduous stands, and A. gallica Marxm. et Romagn. found in...
In view of expanding cultivation of cereal mixtures, the study was conducted to examine the effects of organic (ORG) vs conventional (CON) farming on fungal contamination, concentrations of phenolic acids (PA) and metals in mixtures of cereals grown in northern and central regions of Poland. The analyses were performed on 10 ORG and 8 CON bulk samples of oat, wheat and barley mixtures, each one comprised...
Microscopic fungi are microorganisms commonly found in cereal products. Pathogens of cereals colonising kernels are responsible, among other things, for deterioration of the technological value of grain. However, the greatest threat is posed by mycotoxins produced by toxin-forming strains of these microorganisms. The aim of the present study was to determine the level of contamination with microscopic...
The presence of microorganisms in the substrate is detected with increasing frequency using chemical methods. During the first 9 weeks ergosterol concentration in sterile or not sterile soil inoculated with one of the damping−off fungi reached 966 µg/g, while number of colony forming units (cfu) went up to 247×103 cfu/g. Ergosterol concentration was correlated with the size of the soil fungal community...
Field observations of oat panicles carried out in the fields of Danko Plant Breeding Company in the period 2006–2007 and in the fields of Strzelce Plant Breeding Company in 2008 showed the occurrence of panicles with Fusarium head blight symptoms in each growing season. In 2006 the percentage of such panicles ranged from 0.25 to 1.5%, in 2007 from 2.0 to 9.0%, whereas in 2008 from 0.5 to 8.0%. The...
Fusarium head blight is one of the most severe diseases of small grain cereals and is caused by several toxigenic Fusarium species. Yield losses and mycotoxin accumulation in grain are caused by the disease. F. sporotrichioides and F. poae produce type A trichothecenes. Saprophyte fungal antagonists, especially Trichoderma harzianum, are effective biocontrol agents against several fungal soil-borne...
Badano podatność 21 linii podwojonych haploidów (DH) na fuzariozę kłosów. Kłosy linii DH, otrzymanych z przekrzyżowania polskiej, jarej odmiany pszenicy Henika i odpornej odmiany meksykańskiej Gondo (CIMMYT) inokulowano zawiesiną zarodników patogenicznego izolatu Fusarium culmorum (chemotyp DON - deoksynivalenol). Linie DH i ich formy rodzicielskie badano w warunkach polowych z zastosowaniem układu...
Zawartość biomasy grzybowej wpływa w istotny sposób na ocenę jakości produktów spożywczych. W pracy przedstawiono zawartość biomarkera biomasy grzybowej (ergosterolu-ERG) w ziarnie zbóż, produktach śniadaniowych zawierających otręby oraz płatki zakupione w sieci sklepów detalicznych na terenie miasta Poznania w roku 2008, jak również w mąkach, a także w produktach po przemiale laboratoryjnym. Największą...
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