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Publication
Aspectos da interacção entre Phytophthora cinnamomi e a doença do declínio em Q. suber e Q. rotundifolia
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Advisor(s)
Abstract(s)
Nesta dissertação estudou-se o envolvimento de P. cinnamomi no declínio do
sobreiro e da azinheira em Portugal. Deu-se especial ênfase ao estudo da patogenicidade
associada a alguns factores edáfico-climáticos que podem actuar na expressão da
doença. Procurou-se ainda nos ecossistemas estudados outros hospedeiros, os quais
podem ter uma grande importância na manutenção e aumento da população do fungo no
solo, através da capacidade do fungo esporular nas suas raízes, contribuindo, assim,
perante condições favoráveis, para surtos epidemiológicos. A distribuição do fungo em
povoamentos de sobreiro e os métodos de detecção e isolamento, foram também
considerados.
Research presented in this dissertation studies the involvement of Phytophthora cinnamomi in the cork and holm oak decline disease in Portugal. Special emphasis is given to the pathogenicity studies associated to some edaphic and climatic factors that can influence the disease expression. In the cork and holm oak infested sites the survey of potencial hosts of P. cinnamomi was carried on within the understorey and overstorey species. Other hosts, besides cork and holm oak species, can show a high importance in the increase of P. cinnamomi inoculum levei through the ability of the fungus to sporulate on roots of these hosts, contributing, in favourables conditions to new infections. Detection and isolation methods of P. cinnamomi and its distribution in cork oak stands are considered.
Research presented in this dissertation studies the involvement of Phytophthora cinnamomi in the cork and holm oak decline disease in Portugal. Special emphasis is given to the pathogenicity studies associated to some edaphic and climatic factors that can influence the disease expression. In the cork and holm oak infested sites the survey of potencial hosts of P. cinnamomi was carried on within the understorey and overstorey species. Other hosts, besides cork and holm oak species, can show a high importance in the increase of P. cinnamomi inoculum levei through the ability of the fungus to sporulate on roots of these hosts, contributing, in favourables conditions to new infections. Detection and isolation methods of P. cinnamomi and its distribution in cork oak stands are considered.
Description
Faculdade de Engenharia de Recursos Naturais, Univ. do Algarve, 2001
Keywords
Phytophthora cinnamomi Sobreiro P. cinnamomi Azinheiro