Use este identificador para citar ou linkar para este item: https://locus.ufv.br//handle/123456789/21507
Tipo: Artigo
Título: Effect of inoculation of symbiotic fungi on the growth and antioxidant enzymes’ activities in the presence of Fusarium subglutinans f. sp. ananas in pineapple plantlets
Autor(es): Moreira, Bruno Coutinho
Prates Junior, Paulo
Jordão, Thuany Cerqueira
Silva, Marliane de Cássia Soares da
Stürmer, Sidney Luiz
Salomão, Luiz Carlos Chamhum
Otoni, Wagner Campos
Kasuya, Maria Catarina Megumi
Abstract: The inoculation with symbiotic fungi, Arbuscular mycorrhizal fungi (AMF) and/or Piriformospora indica on the growth, nutrient absorption, and induction of antioxidant enzyme activities in plantlets of pineapple ‘Imperial’ (fusariosis-resistant) and ‘Pérola’ (fusariosis-susceptible) in the presence of Fusarium subglutinans f. sp. ananas was investigated. The experiment was comprised by two cultivars, with or without fungal inoculation (Claroideoglomus etunicatum, Rhizophagus clarus, and P. indica, a mixture of all the fungi, and the control—absence of fungal inoculation), with or without applying Fusarium conidia, and with four replicates. In both cultivars, nutrient absorption was higher in the AMF plantlets compared to those inoculated with P. indica or the control ones, although it was more efficient in ‘Imperial’ than in ‘Pérola’. Inoculation with AMF and/or P. indica as well as the pathogen influenced differently the activities of superoxide dismutase, catalase, glutathione reductase, peroxidase, and polyphenol oxidase, in the shoots or roots of pineapple plantlets in both cultivars. Inoculated plantlets with mixture of all the fungi also exhibited a better growth and nutrient absorption, and generally, the ‘Imperial’ responded better than ‘Pérola’. In addition, these plantlets developed better than the control even in the presence of pathogen, indicating that inoculation with AMF and/or P. indica may contribute to the production of more resistant propagative material. Increased antioxidant enzyme activity is a potential strategy for managing this plant for explore biological control as an alternative to reduce environmental and health impacts by reducing the use of fungicides.
Palavras-chave: Arbuscular mycorrhizal fungi
Biological control
Claroideoglomus etunicatum
AMF
Piriformospora indica
Rhizophagus clarus
Editor: Acta Physiologiae Plantarum
Tipo de Acesso: Springer Nature Switzerland AG.
URI: http://dx.doi.org/10.1007/s11738-016-2247-y
http://www.locus.ufv.br/handle/123456789/21507
Data do documento: 6-Set-2016
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