Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina

Vegetative compatibility (VC) of Aspergillus flavus isolates from peanut seed was studied to evaluate preliminary diversity and its association with mycotoxin production and sclerotia production and number. A. parasiticus isolates also were included as a comparative group. Isolates were divided into...

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Detalles Bibliográficos
Publicado: 2002
Materias:
Aflatoxins
Diseases
Seed
Vegetative compatibility
Plants (botany)
Arachis hypogaea
Aspergillus
Aspergillus flavus
Aspergillus parasiticus
Fungi
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01912917_v86_n3_p215_Novas
http://hdl.handle.net/20.500.12110/paper_01912917_v86_n3_p215_Novas
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_01912917_v86_n3_p215_Novas
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spelling paper:paper_01912917_v86_n3_p215_Novas2023-06-08T15:19:49Z Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina Aflatoxins Diseases Seed Vegetative compatibility Plants (botany) Arachis hypogaea Aspergillus Aspergillus flavus Aspergillus flavus Aspergillus parasiticus Aspergillus parasiticus Fungi Vegetative compatibility (VC) of Aspergillus flavus isolates from peanut seed was studied to evaluate preliminary diversity and its association with mycotoxin production and sclerotia production and number. A. parasiticus isolates also were included as a comparative group. Isolates were divided into five categories based on mycotoxin production combination. Five of the A. flavus isolates were considered atypical because they simultaneously produced aflatoxins B, G, and cyclopiazonic acid (CPA). Vegetative compatibility groups (VCGs) were determined through complementation tests between nitrate-nonutilizing mutants. Sclerotia diameters and the number of sclerotia produced per square centimeter were determined for each isolate. Out of 32 isolates of A. flavus, 25 combined in 13 VCGs, whereas the remaining could not be assigned to any particular group. Each VCG included isolates of the same mycotoxin category, with only one exception. Also, all isolates within the same VCG were characterized by their ability to produce or not produce sclerotia. Isolates between VCGs showed significant differences in number of sclerotia per square centimeter, but differences in sclerotia size were not evident. Atypical isolates simultaneously producing aflatoxins B, G, and CPA formed a single and exclusive VCG. 2002 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01912917_v86_n3_p215_Novas http://hdl.handle.net/20.500.12110/paper_01912917_v86_n3_p215_Novas
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Aflatoxins
Diseases
Seed
Vegetative compatibility
Plants (botany)
Arachis hypogaea
Aspergillus
Aspergillus flavus
Aspergillus flavus
Aspergillus parasiticus
Aspergillus parasiticus
Fungi
spellingShingle Aflatoxins
Diseases
Seed
Vegetative compatibility
Plants (botany)
Arachis hypogaea
Aspergillus
Aspergillus flavus
Aspergillus flavus
Aspergillus parasiticus
Aspergillus parasiticus
Fungi
Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina
topic_facet Aflatoxins
Diseases
Seed
Vegetative compatibility
Plants (botany)
Arachis hypogaea
Aspergillus
Aspergillus flavus
Aspergillus flavus
Aspergillus parasiticus
Aspergillus parasiticus
Fungi
description Vegetative compatibility (VC) of Aspergillus flavus isolates from peanut seed was studied to evaluate preliminary diversity and its association with mycotoxin production and sclerotia production and number. A. parasiticus isolates also were included as a comparative group. Isolates were divided into five categories based on mycotoxin production combination. Five of the A. flavus isolates were considered atypical because they simultaneously produced aflatoxins B, G, and cyclopiazonic acid (CPA). Vegetative compatibility groups (VCGs) were determined through complementation tests between nitrate-nonutilizing mutants. Sclerotia diameters and the number of sclerotia produced per square centimeter were determined for each isolate. Out of 32 isolates of A. flavus, 25 combined in 13 VCGs, whereas the remaining could not be assigned to any particular group. Each VCG included isolates of the same mycotoxin category, with only one exception. Also, all isolates within the same VCG were characterized by their ability to produce or not produce sclerotia. Isolates between VCGs showed significant differences in number of sclerotia per square centimeter, but differences in sclerotia size were not evident. Atypical isolates simultaneously producing aflatoxins B, G, and CPA formed a single and exclusive VCG.
title Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina
title_short Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina
title_full Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina
title_fullStr Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina
title_full_unstemmed Association of mycotoxin and sclerotia production with compatibility groups in Aspergillus flavus from peanut in Argentina
title_sort association of mycotoxin and sclerotia production with compatibility groups in aspergillus flavus from peanut in argentina
publishDate 2002
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01912917_v86_n3_p215_Novas
http://hdl.handle.net/20.500.12110/paper_01912917_v86_n3_p215_Novas
_version_ 1768541888613187584

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