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Effectiveness of Trichoderma strains isolated from the rhizosphere of citrus tree to control Alternaria alternata, Colletotrichum gloeosporioides and Penicillium digitatum A21 resistant to pyrimethanil in post-harvest oranges (Citrus sinensis L. (Osbeck)).
Ferreira, F V; Herrmann-Andrade, A M; Calabrese, C D; Bello, F; Vázquez, D; Musumeci, M A.
Afiliação
  • Ferreira FV; Centro de Investigaciones y Transferencia de Entre Ríos, CONICET, Concordia, Entre Ríos, Argentina.
  • Herrmann-Andrade AM; Facultad de Ciencias de la Alimentación, Universidad Nacional de Entre Ríos, Concordia, Entre Ríos, Argentina.
  • Calabrese CD; Facultad de Ciencias de la Alimentación, Universidad Nacional de Entre Ríos, Concordia, Entre Ríos, Argentina.
  • Bello F; Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Concordia, Concordia, Entre Ríos, Argentina.
  • Vázquez D; Instituto Nacional de Tecnología Agropecuaria (INTA), Estación Experimental Agropecuaria Concordia, Concordia, Entre Ríos, Argentina.
  • Musumeci MA; Centro de Investigaciones y Transferencia de Entre Ríos, CONICET, Concordia, Entre Ríos, Argentina.
J Appl Microbiol ; 129(3): 712-727, 2020 Sep.
Article em En | MEDLINE | ID: mdl-32249987
AIMS: Penicillium digitatum, Alternaria alternata and Colletotrichum gloeosporioides are pathogens responsible for large decays and production losses of citrus. They are commonly controlled by fungicides, whose excessive applications have led to the emergence of resistant P. digitatum strains. Alternative approaches are imperative for sustainable and environmental harmless citrus production, being biological control a promising strategy. The objective was to evaluate the potential of Trichoderma strains native from the rhizosphere of citrus trees to control these pathogens. METHODS AND RESULTS: Seven strains were isolated and identified as Trichoderma harzianum, T. guizhouense, T. atroviride and T. koningiopsis through morphological and molecular analyses. Five of them showed effective antagonist performance in vitro against the pathogens. The strain T. harzianum IC-30 was the best biological control agent in vivo, obtaining a reduction of rot percentage around 80% after 3 weeks of infection of oranges with P. digitatum A21 (resistant to pyrimethanil). This strain also showed the highest chitinase and glucanase activities. CONCLUSIONS: Trichoderma harzianum IC-30 is an optimal antagonist for the control of green mould spreading and other pathogens in post-harvest citrus fruits. SIGNIFICANCE AND IMPACT OF THE STUDY: The strain combined with supplementary practices could lead to sustainable management of citrus fungal diseases, dispensing with synthetic fungicides.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Trichoderma / Farmacorresistência Fúngica / Citrus sinensis / Fungicidas Industriais Idioma: En Revista: J Appl Microbiol Assunto da revista: MICROBIOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido
Texto completo
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Doenças das Plantas / Trichoderma / Farmacorresistência Fúngica / Citrus sinensis / Fungicidas Industriais Idioma: En Revista: J Appl Microbiol Assunto da revista: MICROBIOLOGIA Ano de publicação: 2020 Tipo de documento: Article País de afiliação: Argentina País de publicação: Reino Unido