Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.14/10416
Título: Effect of diflubenzuron on the development of Pinus pinaster seedlings inoculated with the ectomycorrhizal fungus Pisolithus tinctorius
Autor: Ramos, Miguel A.
Sousa, N. R.
Franco, A. R.
Costa, Vítor
Oliveira, Rui
Castro, Paula M. L.
Palavras-chave: Diflubenzuron
Ectomycorrhiza
Pinus pinaster
Pisolithus tinctorius
Sub-lethal damage
Data: 2013
Editora: Springer
Citação: RAMOS, Miguel A... [et al.] - Effect of diflubenzuron on the development of Pinus pinaster seedlings inoculated with the ectomycorrhizal fungus Pisolithus tinctorius. Environmental Science and Pollution Research. ISSN 1614-7499. Vol. 20, n.º 1 (2013), p. 582-590
Resumo: Diflubenzuron (DFB) is an insecticide commonly used to control forest pests. The objectives of this study were to assess the effect of diflubenzuron on the development of Pinus pinaster seedlings and Pisolithus tinctorius under laboratory conditions and to study the possible protective role of this ectomycorrhizal fungus against the effects of diflubenzuron. In vitro experiments revealed that diflubenzuron inhibited fungal growth at all tested concentrations (0.01, 0.1, 1, 10 and 100 mg L−1). Root growth was inhibited at the two highest diflubenzuron concentrations. The activity of the antioxidant defence system of non-inoculated P. pinaster increased at 1 and 10 mg DFB kg−1 substrate, and inoculation increased the threshold to the highest concentration. The protective role of the ectomycorrhizal fungus was seen in the increase of CAT activity. This study revealed that despite causing no mortality, diflubenzuron has the ability to cause sub-lethal damage to P. pinaster. The disproportionate use of this insecticide may lead to higher amounts of its residues in soil and the biosphere, endangering trees, fungi and their symbiosis.
Peer review: yes
URI: http://hdl.handle.net/10400.14/10416
Aparece nas colecções:CBQF - Artigos em revistas internacionais com Arbitragem / Papers in international journals with Peer-review



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