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    Wyświetlanie 1-5 z 5
    Tytuł:
    Biomolecular characterization of Fusarium poae strains isolated from durum wheat in central Italy.
    Autorzy:
    Alberti, I.
    Prà, Dal M.
    Tonti, S.
    Montanari, M.
    Prodi, A.
    Pancaldi, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199628.pdf
    Data publikacji:
    2011-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    durum wheat
    FHB
    F. poae
    gene sequencing
    mycotoxins
    trichothecenes
    Opis:
    Fusarium Head Blight (FHB) is a worldwide disease affecting wheat, barley and other grains, reducing kernel weight and grain yield; infected seeds may contain a large number of mycotoxins, including trichothe- cenes of type A and B. These compounds have already been associated with human and animal toxicoses. Most common species causing the disease are F. graminearum, F. culmorum and F. avenaceum, but in the last few years a gradual increase in incidence of another species, F. poae, has been reported. In general terms, F. poae is a relatively weak pathogen, but its contribute to the increase of mycotoxins level still has to be clarified. Durum wheat is widely cultivated in the central part of Italy, however the effective incidence of F. poae in this area still has to be investigated. In order to monitor Fusarium risk, we collected dozens of F. poae strains on seeds and glumes of durum wheat coming from some of the most important cultivated areas of Central Italy. Every isolate was identified both by microscope observation and by PCR assay with the primer pair Fp82 F/R. Strains were therefore subjected to a more accurate molecular characterization by Translation Elongation Factor 1-alpha (TEF-1α) gene sequencing.  
    Źródło:
    Plant Breeding and Seed Science; 2011, 64; 153-161
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fuzzy Techniques in the Functional Approximation of Volumetric Capnograms
    Autorzy:
    Scandurra, A. G.
    Pra, Ana L. Dai
    Passoni, L. I.
    Meschino, G. J.
    Clara, F. M.
    Tusman, G.
    Böhm, S. H.
    Powiązania:
    https://bibliotekanauki.pl/articles/108656.pdf
    Data publikacji:
    2011
    Wydawca:
    Społeczna Akademia Nauk w Łodzi
    Tematy:
    volumetric capnography
    Takagi-Sugeno Fuzzy Inference Systems
    functional modeling
    Opis:
    The Volumetric Capnography (VC) is the plot of amounts of expired CO₂ within one tidal breath. The estimation of physiologic parameters derived from the VC is useful in the study of respiratory physiology, clinical anesthesia and critical care medicine. In this work we propose the use of a function based on a Takagi-Sugeno fuzzy model and a functional approximation based on the Levenberg-Marquardt algorithm to approximate the VC, with the goal to compute two variables of interest: the airway dead space (VDaw) and the slope of the so-called Phase III (SIII). These models presented a good performance in those capnograms that showed difficulties to be modeled with traditional medical analysis.
    Źródło:
    Journal of Applied Computer Science Methods; 2011, 3 No. 1; 17-29
    1689-9636
    Pojawia się w:
    Journal of Applied Computer Science Methods
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of deoxynivalenol and nivalenol producing chemotypes of Fusarium graminearum isolated from durum wheat in different Italian regions.
    Autorzy:
    Prodi, A.
    Salomoni, D.
    Bertacchini, E.
    Alkadri, D.
    Pisi, A.
    Tonti, S.
    Alberti, I.
    Dal Prà, M.
    Pancaldi, D.
    Covarelli, L.
    Nipoti, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/2199616.pdf
    Data publikacji:
    2011-12-20
    Wydawca:
    Instytut Hodowli i Aklimatyzacji Roślin
    Tematy:
    DON and NIV chemotypes
    durum wheat
    Fusarium Head Blight
    Tri12
    Opis:
    Durum wheat production in Italy is economically of great importance. Fusarium graminearum is the main fusarium head blight (FHB) causal agent in wheat, reducing both yield and grain quality. F. graminearum produces several mycotoxins and, among trichothecenes, deoxynivalenol (DON) and nivalenol (NIV) are the most studied for their toxicity towards humans and animals. DON-producing isolates can be further distin- guished on the basis of the predominant acetyl-DON derivative in 3-acetyldeoxynivalenol (3-ADON) or 15- acetyldeoxynivalenol (15-ADON). In order to evaluate possible mycotoxin contamination risks in food, it is very important to know which chemotype is the prevalent in a F. graminearum population. F. graminearum sensu stricto strains were collected from symptomatic durum wheat heads and grains of several naturally infected fields located mostly in Emilia – Romagna, The Marche, Lazio, Tuscany and Umbria. A multiplex PCR in the region of genes Tri12, located in the terminal gene cluster of trichothecenes, was used to characterize 187 single-spore isolates of F. graminearum as NIV, 3-ADON and 15-ADON chemotypes. All the three chemotypes were present in the F. graminearum population studied. The most frequent chemotype was 15-ADON (83.4%), followed by 3-ADON (10.7%) and NIV (5.9%). NIV-producing isolates were found only in Emilia-Romagna (3.5%), Umbria (33.3%) and The Marche (5.7%).
    Źródło:
    Plant Breeding and Seed Science; 2011, 64; 75-80
    1429-3862
    2083-599X
    Pojawia się w:
    Plant Breeding and Seed Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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