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Wyszukujesz frazę "chemotypes" wg kryterium: Temat


Wyświetlanie 1-2 z 2
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
Tytuł:
Chemotypes and geographic distribution of the Fusarium graminearum species complex
Autorzy:
Przemieniecki, S. W.
Kurowski, T. P.
Korzekwa, K.
Powiązania:
https://bibliotekanauki.pl/articles/363266.pdf
Data publikacji:
2014
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
chemotypes
Fusarium graminearum species complex
FGSC
genetic diversity
geographic distribution
chemotypy
Fusarium graminearum kompleks gatunku
zmienność genetyczna
podział geograficzny
Opis:
The Fusarium graminearum species complex (FGSC) consists of phylogenetically distinct pathogenic species. Isolates from various regions display genetic variety worldwide. Three type B trichothecene chemotypes have been identified within the FGSC: nivalenol, 3-deoxynivalenol and 15-deoxynivalenol. The variations in morphological, genetic and virulence traits of FGSC fungi can be attributed mainly to their geographic boundaries. The geographic range of host plants, type of farming system and weather conditions also influence the prevalence of FGSC taxa. The geographic distribution of FGSC members may reflect not only their chemotype but also adaptive traits. While 15-acetyl-deoxynivalenol (15-ADON) chemotype is prevalent in most of Europe, the 3-acetyl-deoxynivalenol (3-ADON) chemotype has achieved greater prevalence in parts of North America. The Asian species F. asiaticum has spread into new territories. Isolates of F. asiaticum have been identified in North America and Europe, and the species has recently been reported to be infecting cereal crops in South America. The occurrence of numerous members of the FGSC in those regions and the introduction of F. asiaticum into new areas raise significant food safety concerns and indicate the need for monitoring mycotoxin concentrations in harvested grain.
Źródło:
Environmental Biotechnology; 2014, 10, 2; 45-59
1734-4964
Pojawia się w:
Environmental Biotechnology
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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