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Wyszukujesz frazę "Fusarium graminearum" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
Effects of Infection Time by Fusarium Graminearum on Ear Blight, Deoxynivalenol and Zearalenone Production in Wheat
Autorzy:
Gourdain, Emmanuelle
Rosengarten, Prune
Powiązania:
https://bibliotekanauki.pl/articles/2199600.pdf
Data publikacji:
2011-06-21
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
wheat
Fusarium graminearum
infection time
desoxynivalenol
zearalenone
Opis:
Although it is generally agreed that most Fusarium head blight infection takes place during the wheatflowering period, very rainy conditions at the end of the plant growth, such as occurred in France in 2007,raise the question of the possibility of late infections on the development of the disease and the production oftoxins. Such infections are not taken into account by predictive models. To explore the effect of infection timeon disease severity, Fusarium-damaged kernels (FDK), desoxynivalenol (DON) and zearalenone (ZON), anexperiment was set up in 2009 on two varieties. The experiment had a split-plot design. Plots were inoculatedby spraying Fusarium graminearum conidia at different stage, from heading to ripening. Inoculation time hada significant effect on disease severity, FDK, DON and ZON levels (P<0.0001), as well as interaction betweenvariety and inoculation time. The results of this trial have shown no significant difference between infection atheading, anthesis and post-anthesis until 15 days for disease severity, FDK and mycotoxins levels. Nevertheless, this trial has suggested different behaviour between the two varieties according to infection time andtoxin accumulation. The period of high susceptibility to Fusarium graminearum has appeared unstable between varieties, ranging from closed to flowering to a large period from heading to several days after flowering.
Źródło:
Plant Breeding and Seed Science; 2011, 63; 67-76
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Cloning and heterologous expression of candidate DON-inactivating UDP-glucosyltranferases from rice and wheat in yeast.
Autorzy:
Schweiger, Wolfgang
Steiner, Barbara
Limmongkon, Apinun
Brunner, Kurt
Lemmens, Marc
Berthiller, Franz
Bürstmayr, Hermann
Adam, Gerhard
Powiązania:
https://bibliotekanauki.pl/articles/2199622.pdf
Data publikacji:
2011-12-20
Wydawca:
Instytut Hodowli i Aklimatyzacji Roślin
Tematy:
deoxynivalenol
Fusarium graminearum
phase II detoxification
rice
UDP-glucosyltranferase
wheat
Opis:
Fusarium graminearum and related species causing Fusarium head blight of cereals and ear rot of maize produce the trichothecene toxin and virulence factor deoxynivalenol (DON). Plants can detoxify DON to a variable extent into deoxynivalenol-3-O-glucoside (D3G). We have previously reported the DON inactivat- ing glucosyltransferase (UGT) AtUGT73C5 from Arabidopsis thaliana (Poppenberger et al, 2003). Our goal was to identify UGT genes from monocotyledonous crop plants with this enzymatic activity. The two selected rice candidate genes with the highest sequence similarity with AtUGT73C5 were expressed in a toxin sensitive yeast strain but failed to protect against DON. A full length cDNA clone corresponding to a transcript derived fragment (TDF108) from wheat, which was reported to be specifically expressed in wheat genotypes contain- ing the quantitative trait locus Qfhs.ndsu-3BS for Fusarium spreading resistance (Steiner et al, 2009) was reconstructed. Only cDNAs with a few sequence deviations from TF108 could be cloned. However, toxin sensitive yeast strains expressing this wheat UGT cDNA did not show a resistant phenotype. The main diffi- culty in generating full length cDNAs for functional validation by heterologous expression in yeast is the enormous number of the UGT superfamily members in plants, with 107 UGT genes plus some pseudogenes in Arabidopsis thaliana and about 150 putative UGT genes in grasses. We conclude that neither sequence simi- larity nor inducibility are good predictors of substrate specificity.  
Źródło:
Plant Breeding and Seed Science; 2011, 64; 105-112
1429-3862
2083-599X
Pojawia się w:
Plant Breeding and Seed Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Evaluation of resistance and the role of some defense responses in wheat cultivars to Fusarium head blight
Autorzy:
Khaledi, N.
Taheri, P.
Falahati-Rastegar, M.
Powiązania:
https://bibliotekanauki.pl/articles/66757.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
resistance
defense response
wheat
Triticum aestivum
plant cultivar
Fusarium head blight
Fusarium culmorum
Fusarium graminearum
plant disease
Opis:
Fusarium graminearum and F. culmorum are the causal agents of Fusarium head blight (FHB) in cereal crops worldwide. Application of resistant cultivars is the most effective and economic method for management of FHB and reducing mycotoxin production in wheat. Understanding the physiological and biochemical mechanisms involved in basal resistance of wheat to FHB disease is limited. In this research, after screening resistance levels of eighteen wheat cultivars planted in Iran, Gaskozhen and Falat were identified as partially resistant and susceptible wheat cultivars against Fusarium spp., respectively. Also, we investigated the role of hydroxyl radical (OH−), nitric oxide (NO), callose deposition, lipid peroxidation and protein content in basal resistance of wheat to the hemi-biotrophic and necrotrophic Fusarium species causing FHB. Nitric oxide as a signaling molecule may be involved in physiological and defensive processes in plants. Our results showed that NO generation increased in seedlings and spikes of wheat cultivars after inoculation with Fusarium species. We observed earlier and stronger callose deposition at early time points after infection by Fusarium spp. isolates than in non-infected plants, which was positively related to the resistance levels in wheat cultivars. Higher levels of OH− and malondialdehyde (MDA) accumulation (as a marker of lipid peroxidation) were observed in the Falat than in the Gaskozhen cultivar, under non-infected and infected conditions. So, estimation of lipid peroxidation could be useful to evaluate cultivars’ susceptibility. These findings can provide novel insights for better recognition of physiological and biochemical markers of FHB resistance, which could be used for rapid screening of resistance levels in wheat cultivars against this destructive fungal disease.
Źródło:
Journal of Plant Protection Research; 2017, 57, 4
1427-4345
Pojawia się w:
Journal of Plant Protection Research
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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