Paolo Capretti - Academia.edu (original) (raw)
Papers by Paolo Capretti
Infectious forest diseases, 2013
In the temperate zone, the main agents causing damage to forest tree crowns, with the exception o... more In the temperate zone, the main agents causing damage to forest tree crowns, with the exception of abiotic agents and insects, are the Ascomycota, followed by the rust-causing Basidiomycota. This chapter will mainly focus on Gremmeniella abietina, Diplodia pinea (syn. Sphaeropsis sapinea), Sirococcus conigenus and Venturia populina, which are among the best known agents of serious epidemics on conifers and on poplars (Populus spp.). Information is given on the pathogen distribution, host range, detection, infection biology and epidemiology. Some of the most important environmental factors and anthropogenic activities affecting the incidence of crown diseases are mentioned. Several management strategies and tactics are described, which include chemical control measures, systemic induced resistance, genetic resistance and cultural practices.
Italian Journal of Forest and Mountain Environments, 2005
La Foresta di Vallombrosa costituisce da tempo un luogo familiare per i patologi forestali. E qui... more La Foresta di Vallombrosa costituisce da tempo un luogo familiare per i patologi forestali. E qui difatti che nel 1869, insieme al Regio Istituto Superiore Forestale di Vallombrosa, si puo dire sia nata la Patologia forestale italiana. Fin da allora la foresta con la sua varieta di ambienti e di specie, spesso introdotte, si e ben presta ad indagare su alcune malattie delle piante forestali in materia organica ed ordinata. Le prime attivita dei fitopatologi a Vallombrosa, insieme all’insegnamento, impartito da illustri studiosi come Fridiano Cavara furono dedicate ad ampliare le conoscenze sia come numero di patogeni che di ospiti presenti, che di situazioni ambientali, svolgendo una sorta di «Monitoraggio». E difatti in questo periodo che vengono descritti i «Principali casi fitopatologici studiati nel laboratorio di storia naturale del R. Istituto Forestale di Vallombrosa durante il biennio 1896-97» (MORIONDO, 1989). A Vallombrosa gli interessi dei patologi oltre a studiare alcune...
Forest Pathology, 2015
Summary We assessed the mycelial growth rate of Hymenoscyphus fraxineus, the causal agent of ash ... more Summary We assessed the mycelial growth rate of Hymenoscyphus fraxineus, the causal agent of ash dieback, on agar media containing leaf extracts of seven common Mediterranean species of the Oleaceae (Fraxinus excelsior, F. angustifolia, F. ornus, Ligustrum vulgare, Olea europaea, Phyllirea latifolia and Syringa vulgaris). The pathogen grew on all media, but growth rates showed significant differences among media and H. fraxineus isolates. Growth rates were highest on media containing F. excelsior and F. angustifolia, intermediate on media containing O. europaea and P. latifolia and lowest on those containing F. ornus and L. vulgare.
Proceedings e report, 2013
The present Proceedings comprise the contributions that were presented at the 13th International ... more The present Proceedings comprise the contributions that were presented at the 13th International Conference of the IUFRO W. Party 7.02.01 “Root and Butt Rot of Forest Trees” that was held in Italy from the 4th to the 10th of September 2011. The Conference started in Firenze than moved to FEM Research Centre, S. Michele all’Adige, Trento and continued in San Martino di Castrozza, Dolomite region. Root and Butt Rot of Forest Trees have a high biological and economic impact in forestry. The Proceedings were organized under seven headings: Genomics and Plant-Pathogen Interactions; Systematics, Taxonomy and Phylogeography; Ecology; Population Genetics; Etiology and Epidemiology; Disease Management and Control; New Reports, Diagnostics and Research on the Application of new Diagnostic Methods.
Le Centre pour la Communication Scientifique Directe - HAL - Diderot, 2019
Spiecker and Konstantin von Teuffel. In a follow-up workshop "DougOP" on Douglas-fir on 12 Septem... more Spiecker and Konstantin von Teuffel. In a follow-up workshop "DougOP" on Douglas-fir on 12 September 2013 in Elmstein, Germany, organised by Burkhard Steckel, the idea was further elaborated. This was followed by a conference on "Potential of Douglas-fir cultivation and benefits for the forest ecosystems management in Europe", 9-12 June 2014 near Prague, Czech Republic, organised by Vilém Podrázský. During this time Johanna Schuler strongly supported the concept development of the book. Marcus Lindner made many suggestions for improving the quality of the book. The COST Action FP1403 NNEXT on "Non-native Tree Species for European Forests" promoted its publication. I would like to take the opportunity to thank all participants of the meetings and conferences as well as the members of the COST Action FP1403 NNEXT for sharing their ideas and valuable thoughts and especially those who acted as authors and co-authors of the book. In addition, I would like to thank all the reviewers who carefully checked the manuscripts and offered valuable suggestions for improving the quality of the book: Christian
L'Italia Forestale e Montana
The aim of this work was to organize some historical phytopathological information collected sinc... more The aim of this work was to organize some historical phytopathological information collected since 1850 in the Vallombrosa forest. With this research, based on written sources, on-site findings and oral sources, the Authors describe the main problems due to both fungi and insects as well as to abiotic stress factors. The picture that emerges is still incomplete and nevertheless useful particularly for analysing the damage caused to Abies alba by Heterobasidion abietinum, Armillaria sp. and many insects in relation to increasing summer drought stress due to climate change. The analysis of historical observations increases the general knowledge about the Forest and may assist to plan a well informed and effective management of the Reserve in the future
Phytopathologia Mediterranea, 2001
The isolation frequency of endophytic fungi in Quercus cerris was determined in relation to sampl... more The isolation frequency of endophytic fungi in Quercus cerris was determined in relation to sampling data, the health state of the tree, and the tree organ affected. Sampling was carried out at three times, in April (budbreak), June (full vegetation) and October (leaf fall), on trees that were either healthy or in decline, and on three organs: current-year twigs, with a diameter less than 2 cm, buds, and leaves. The experiment was done in an approximately 20-year-old oak forest at an altitude of 350-400 m above sea level. Three healthy and three declining trees were sampled annually in 1999 and 2000. From each tree 20 current-year twigs, 20 buds and 10 leaves were harvested. Tissue fragments, after sterilization with 10% H2O2, were incubated on potato-dextrose-agar amended with streptomycin, at 20°C in the dark for 7 days, and the isolated mycelia maintained at 4°C on malt-extract agar. A total of 15 fungal species were isolated. All organs yielded fungal species but the greatest nu...
Journal of Plant Pathology, 2017
Infectious forest diseases, 2013
In the temperate zone, the main agents causing damage to forest tree crowns, with the exception o... more In the temperate zone, the main agents causing damage to forest tree crowns, with the exception of abiotic agents and insects, are the Ascomycota, followed by the rust-causing Basidiomycota. This chapter will mainly focus on Gremmeniella abietina, Diplodia pinea (syn. Sphaeropsis sapinea), Sirococcus conigenus and Venturia populina, which are among the best known agents of serious epidemics on conifers and on poplars (Populus spp.). Information is given on the pathogen distribution, host range, detection, infection biology and epidemiology. Some of the most important environmental factors and anthropogenic activities affecting the incidence of crown diseases are mentioned. Several management strategies and tactics are described, which include chemical control measures, systemic induced resistance, genetic resistance and cultural practices.
Italian Journal of Forest and Mountain Environments, 2005
La Foresta di Vallombrosa costituisce da tempo un luogo familiare per i patologi forestali. E qui... more La Foresta di Vallombrosa costituisce da tempo un luogo familiare per i patologi forestali. E qui difatti che nel 1869, insieme al Regio Istituto Superiore Forestale di Vallombrosa, si puo dire sia nata la Patologia forestale italiana. Fin da allora la foresta con la sua varieta di ambienti e di specie, spesso introdotte, si e ben presta ad indagare su alcune malattie delle piante forestali in materia organica ed ordinata. Le prime attivita dei fitopatologi a Vallombrosa, insieme all’insegnamento, impartito da illustri studiosi come Fridiano Cavara furono dedicate ad ampliare le conoscenze sia come numero di patogeni che di ospiti presenti, che di situazioni ambientali, svolgendo una sorta di «Monitoraggio». E difatti in questo periodo che vengono descritti i «Principali casi fitopatologici studiati nel laboratorio di storia naturale del R. Istituto Forestale di Vallombrosa durante il biennio 1896-97» (MORIONDO, 1989). A Vallombrosa gli interessi dei patologi oltre a studiare alcune...
Forest Pathology, 2015
Summary We assessed the mycelial growth rate of Hymenoscyphus fraxineus, the causal agent of ash ... more Summary We assessed the mycelial growth rate of Hymenoscyphus fraxineus, the causal agent of ash dieback, on agar media containing leaf extracts of seven common Mediterranean species of the Oleaceae (Fraxinus excelsior, F. angustifolia, F. ornus, Ligustrum vulgare, Olea europaea, Phyllirea latifolia and Syringa vulgaris). The pathogen grew on all media, but growth rates showed significant differences among media and H. fraxineus isolates. Growth rates were highest on media containing F. excelsior and F. angustifolia, intermediate on media containing O. europaea and P. latifolia and lowest on those containing F. ornus and L. vulgare.
Proceedings e report, 2013
The present Proceedings comprise the contributions that were presented at the 13th International ... more The present Proceedings comprise the contributions that were presented at the 13th International Conference of the IUFRO W. Party 7.02.01 “Root and Butt Rot of Forest Trees” that was held in Italy from the 4th to the 10th of September 2011. The Conference started in Firenze than moved to FEM Research Centre, S. Michele all’Adige, Trento and continued in San Martino di Castrozza, Dolomite region. Root and Butt Rot of Forest Trees have a high biological and economic impact in forestry. The Proceedings were organized under seven headings: Genomics and Plant-Pathogen Interactions; Systematics, Taxonomy and Phylogeography; Ecology; Population Genetics; Etiology and Epidemiology; Disease Management and Control; New Reports, Diagnostics and Research on the Application of new Diagnostic Methods.
Le Centre pour la Communication Scientifique Directe - HAL - Diderot, 2019
Spiecker and Konstantin von Teuffel. In a follow-up workshop "DougOP" on Douglas-fir on 12 Septem... more Spiecker and Konstantin von Teuffel. In a follow-up workshop "DougOP" on Douglas-fir on 12 September 2013 in Elmstein, Germany, organised by Burkhard Steckel, the idea was further elaborated. This was followed by a conference on "Potential of Douglas-fir cultivation and benefits for the forest ecosystems management in Europe", 9-12 June 2014 near Prague, Czech Republic, organised by Vilém Podrázský. During this time Johanna Schuler strongly supported the concept development of the book. Marcus Lindner made many suggestions for improving the quality of the book. The COST Action FP1403 NNEXT on "Non-native Tree Species for European Forests" promoted its publication. I would like to take the opportunity to thank all participants of the meetings and conferences as well as the members of the COST Action FP1403 NNEXT for sharing their ideas and valuable thoughts and especially those who acted as authors and co-authors of the book. In addition, I would like to thank all the reviewers who carefully checked the manuscripts and offered valuable suggestions for improving the quality of the book: Christian
L'Italia Forestale e Montana
The aim of this work was to organize some historical phytopathological information collected sinc... more The aim of this work was to organize some historical phytopathological information collected since 1850 in the Vallombrosa forest. With this research, based on written sources, on-site findings and oral sources, the Authors describe the main problems due to both fungi and insects as well as to abiotic stress factors. The picture that emerges is still incomplete and nevertheless useful particularly for analysing the damage caused to Abies alba by Heterobasidion abietinum, Armillaria sp. and many insects in relation to increasing summer drought stress due to climate change. The analysis of historical observations increases the general knowledge about the Forest and may assist to plan a well informed and effective management of the Reserve in the future
Phytopathologia Mediterranea, 2001
The isolation frequency of endophytic fungi in Quercus cerris was determined in relation to sampl... more The isolation frequency of endophytic fungi in Quercus cerris was determined in relation to sampling data, the health state of the tree, and the tree organ affected. Sampling was carried out at three times, in April (budbreak), June (full vegetation) and October (leaf fall), on trees that were either healthy or in decline, and on three organs: current-year twigs, with a diameter less than 2 cm, buds, and leaves. The experiment was done in an approximately 20-year-old oak forest at an altitude of 350-400 m above sea level. Three healthy and three declining trees were sampled annually in 1999 and 2000. From each tree 20 current-year twigs, 20 buds and 10 leaves were harvested. Tissue fragments, after sterilization with 10% H2O2, were incubated on potato-dextrose-agar amended with streptomycin, at 20°C in the dark for 7 days, and the isolated mycelia maintained at 4°C on malt-extract agar. A total of 15 fungal species were isolated. All organs yielded fungal species but the greatest nu...
Journal of Plant Pathology, 2017