S. Hlaiem, Islem Yangui, G. Della Rocca, S. Barberini, R. Danti, M. L. Ben Jamâa
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引用次数: 3
Abstract
ABSTRACT Forest decline is a widespread phenomenon on coasts throughout the Mediterranean basin. Pathogenic fungi are amongst the main causes of forest tree diseases. Diplodia species, having a cosmopolitan distribution, are well-known as pathogens of woody plant hosts including Pinus spp. In recent years, symptoms of shoot dieback, necrosis, twig blight, canopy transparency and trunk cankers have been observed on Pinus pinea trees in Tunisian forests. Nevertheless, this has been less well-studied in North Africa and especially in Tunisia. The purpose of this study is to report the occurrence of Diplodia species causing dieback on P. pinea in two forests in northeastern and the northern Tunisia. A collection of fifty-eight isolates were obtained from symptomatic branches of P. pinea trees. Three Diplodia species were identified: D. africana, D. pseudoseriata and D. scrobiculata by means of morphological characteristics, and phylogenetic analysis. Their incidence on P. pinea trees appeared to be significantly correlated to the dendrometric parameters and ecological factors. A pathogenicity test was conducted on 3-years-old P. pinea seedlings, confirmed the virulence of three Diplodia species. Based on the length of vascular necrosis in the wood of the P. pinea inoculated stem, D. scrobiculata was the most virulent species. Data from the present study provide the first report of the species of Diplodia associated with P. pinea dieback in Tunisia.
期刊介绍:
Journal of Sustainable Forestry publishes peer-reviewed, original research on forest science. While the emphasis is on sustainable use of forest products and services, the journal covers a wide range of topics from the underlying biology and ecology of forests to the social, economic and policy aspects of forestry. Short communications and review papers that provide a clear theoretical, conceptual or methodological contribution to the existing literature are also included in the journal.
Common topics covered in the Journal of Sustainable Forestry include:
• Ecology, management, recreation, restoration and silvicultural systems of all forest types, including urban forests
• All aspects of forest biology, including ecophysiology, entomology, pathology, genetics, tree breeding, and biotechnology
• Wood properties, forest biomass, bioenergy, and carbon sequestration
• Simulation modeling, inventory, quantitative methods, and remote sensing
• Environmental pollution, fire and climate change impacts, and adaptation and mitigation in forests
• Forest engineering, economics, human dimensions, natural resource policy, and planning
Journal of Sustainable Forestry provides an international forum for dialogue between research scientists, forest managers, economists and policy and decision makers who share the common vision of the sustainable use of natural resources.