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Elms and Dutch elm disease in towns today.
Mittempergher, L.; Fagnani, A.; Ferrini, F.; Informatore Fitopatologico, 1998, 48, 6, pp 34-39, 10 ref. The occurrence of Dutch elm disease in Italy is described. Infection is now very high in Calabria and Sicily and temporarily low in central and northern parts of Italy. As no significant changes in the causal fungus (Ophiostoma novo-ulmi) are foreseen, it...
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A classification of elm species present in Italy.
Mittempergher, L.; Sherwood - Foreste ed Alberi Oggi, 1997, 3, 7, pp 13-17 Illustrations of foliage, and other characteristic features are given for Ulmus pumila, U. laevis, U. glabra, U. minor, U. canescens, U. hollandica and U. procera.
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Current status of Dutch elm disease.
Mittempergher, L.; Fagnani, A.; Ferrini, F.; Sherwood - Foreste ed Alberi Oggi, 1996, 2, 4, pp 15-20, 6 ref. Recent research (in Italy and Europe) is summarized, in the context of the appearance of a more aggressive variant of Ophiostoma ulmi [Ceratocystis ulmi] on elm (Ulmus carpinifolia [U. minor], U. laevis, U. glabra, U. pumila, and the hybrids U. × hollandi...
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Propagation of elm (Ulmus spp.) by woody cuttings.
Bartolini, G.; Fagnani, A.; Mittempergher, L.; Panicucci, M.; Monti e Boschi, 1997, 48, 4, pp 48-51, 15 ref. The rooting of clones of some Asiatic elm species and USA, Netherlands and Italian hybrids - Ulmus japonica [U. davidiana var. japonica], U. chenmoui, U. parvifolia, U. carpinifolia [U. minor], U. pumila, U. pumila × U. japonica, U. pumila × U. carpinifol...
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Dutch elm disease progression and quantitative determination of cerato-ulmin in leaves, stems and branches of elms inoculated with Ophiostoma novo-ulmi and O. ulmi.
Scala, A.; Pattuelli, M.; Coppola, L.; Guastini, M.; Tegli, S.; Sorbo, G. del; Mittempergher, L.; Scala, F.; Physiological and Molecular Plant Pathology, 1997, 50, 5, pp 349-360, 43 ref. In Ulmus hybrid clone FL025, disease was more severe when inoculated with O. novo-ulmi than with O. ulmi. O. novo-ulmi grew more than O. ulmi in parts of the plant below the inoculation point. The levels of cerato-ulmin in stems, branches and leaves were ...
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Identification of phytoplasmas associated with a decline of European hackberry (Celtis australis).
Bertaccini, A.; Mittempergher, L.; Vibio, M.; Annals of Applied Biology, 1996, 128, 2, pp 245-253, 29 ref. Phytoplasmas were detected by PCR in declining trees of C. australis, using primers amplifying phytoplasma 16S rDNA regions. RFLP analysis of these DNA fragments and PCR employing primers specific for particular phylogenetic groups of phytoplasmas, detect...
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Control of Dutch elm disease by induced host resistance.
Sutherland, M. L.; Mittempergher, L.; Brasier, C. M.; European Journal of Forest Pathology, 1995, 25, 6/7, pp 307-318, 22 ref. A range of fungi was screened for the ability to suppress symptoms of Dutch elm disease in European and hybrid elms under UK and Italian field conditions in 1992 and 1993. The efficacy of the preventive inoculations varied considerably between elm clones ...
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Detection and characterization of phytoplasmas associated with diseases in Ulmus and Rubus in northern and central Italy.
Lee, I. M.; Bertaccini, A.; Vibio, M.; Gundersen, D. E.; Davis, R. E.; Mittempergher, L.; Conti, M.; Gennari, F.; Phytopathologia Mediterranea, 1995, 34, 3, pp 174-183, 25 ref. Aetiologies of elm diseases consisting of yellowing, witches' broom, and/or decline symptom(s) that occur in central and northern Italy were investigated. Direct and nested-PCR assays using universal R16F2/R2 and phytoplasma group specific R16(I)F1/R1, R1...
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Aspects of elm propagation by soft and hardwood cuttings.
Mittempergher, L.; Bartolini, G.; Ferrini, F.; Panicucci, M.; Suelo y Planta, 1992, 2, 1, pp 129-137, 15 ref. Type of cuttings, time of collection, effects of auxin (IBA) treatment and environmental conditions during rooting were studied for vegetative propagation of Ulmus carpinifolia, (U. glabra × U. wallichiana) × U. hollandica - U. 'Lobel', and U. pumila × U....
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European white elm (Ulmus laevis): an interesting and little-known species.
Mittempergher, L.; Fagnani, A.; Ferrini, F.; Monti e Boschi, 1993, 44, 4, pp 13-17, 13 ref. A brief botanical description of Ulmus laevis is given. This exotic species occurs as a street tree in central and northern Italy. It does not hybridize with other European elms. It has been less damaged by Dutch elm disease (caused by Ophiostoma ulmi) in...
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