Biblioteca Digital do Instituto Politécnico de Bragança   Instituto Politécnico de Bragança

Biblioteca Digital do IPB >
Escola Superior Agrária >
Biologia e Biotecnologia >
BB - Resumos em Proceedings Não Indexados ao ISI >

Please use this identifier to cite or link to this item: http://hdl.handle.net/10198/955

Título: In vitro interaction of Amanita muscaria and Phytophthora cinnamomi: possible biocontrol effect
Autor: Rodrigues, Paula
Martins, Anabela
Palavras-chave: Phytophtora cinnamomi
Biocontrol
Issue Date: 2005
Editora: The British Society for Plant Pathology
Citação: BSPP Presidential Meeting. Nottingham, 2005
Resumo: Ink disease, caused by the Oomycetes Phytophthora cinnamomi Rands. and Phytophthora cambivora (Petri) Buism., is a major soilborne problem in European chestnut (Castanea sativa) stands all over South Europe. Chemical treatments are not effective and comprise serious environmental and economic costs, so biological control is under study as a possible solution for this problem. Ectomycorrhizal (ECM) fungi are generally considered as potential biocontrol agents, for several of them have shown a positive effect on growth and survival of infected plants. The mechanisms underlying these effects are, however, still unknown. It is possible that they result from a chemical antagonism or a physical barrier of the ECM fungus over the pathogen, but other hypotheses involve active responses by the plant. Amanita muscaria is an important ECM fungus of C. sativa in the Northeast of Portugal. The present study intended to investigate a possible antibiosis effect of A. muscaria (Am) over P. cinnamomi (Pc). For this purpose, we used isolates of Am and Pc collected from a local chestnut orchard. The interaction between the organisms was tested by the dual culture technique on Petri dish, using mycelial inoculum, in two different culture media: MMN and PDA. The following dual cultures were tested: Am + Am, Pc + Pc, Am + Pc (inoculated simultaneously) and Am7→Pc (Pc inoculated 7 days after the inoculation of Am). Interaction was analysed daily for a period of seven days (given the rapid growth of Pc), and was based on radial growth and morphological features of both organisms. The growth of P. cinnamomi was heavily constrained by the presence of A. muscaria (in both Am + Pc and Am7→Pc dual cultures), and more spores were formed, when compared with Pc + Pc cultures. The results suggest a heavy antagonistic effect of the ECM fungus over the pathogen. Other ECM fungi are currently under study for the analysis and comparison of possible different effects over P. cinnamomi.
URI: http://hdl.handle.net/10198/955
Appears in Collections:BB - Resumos em Proceedings Não Indexados ao ISI

Files in This Item:

File Description SizeFormat
Cong_Internac_Painel[4].pdf105,82 kBAdobe PDFView/Open
2005_BSPP_Rodrigues&Martins_Abstract.pdf1,39 MBAdobe PDFView/Open
Statistics
FacebookTwitterDeliciousLinkedInDiggGoogle BookmarksMySpaceOrkut
Formato BibTex mendeley Endnote Logotipo do DeGóis 

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

 


  © Instituto Politécnico de Bragança - Biblioteca Digital - Feedback - Statistics
  Estamos no RCAAP Governo Português separator Ministério da Educação e Ciência   Fundação para a Ciência e a Tecnologia

Financiado por:

POS_C UE