Littérature scientifique sur le sujet « Seiridium cardinale »

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Articles de revues sur le sujet "Seiridium cardinale"

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Spanos, K. A., A. Pirrie et S. Woodward. « In vitro expression of resistance responses to Seiridium species in micropropagated shoots of Cupressus sempervirens and Chamaecyparis lawsoniana ». Canadian Journal of Botany 75, no 7 (1 juillet 1997) : 1103–9. http://dx.doi.org/10.1139/b97-121.

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Wounded and nonwounded micropropagated shoots of Cupressus sempervirens and Chamaecyparis lawsoniana were inoculated in vitro with the canker-causing pathogens Seiridium cardinale (Wag.) Sutton & Gibson, Seiridium cupressi (Guba) Boeswinkel and Seiridium unicorne (Cke & Ell.) Sutton. Seiridium cardinale was significantly more pathogenic on Cupressus sempervirens than on Chamaecyparis lawsoniana (Murr.) Parlatore, irrespective of the presence of wounds on the shoots. On wounded shoots, both S. cupressi and S. unicorne caused significantly larger lesions on Chamaecyparis lawsoniana than on Cupressus sempervirens by 20 days after inoculation. Superficial wounding of shoots prior to inoculation caused a significant increase in the lengths of lesions and numbers of shoots girdled by the pathogens on both hosts. These results broadly correlate with known virulence of the three pathogens on these two host tree species in field and glasshouse tests. Using histological methods, penetration of fungal hyphae through stomatal pores of both shoots and leaves into the substomatal cavity and the mesophyll space was observed. Penetration directly through the cuticle was also seen. Defence-related responses, including accumulation of oxidized polyphenols compounds and deposition of lignin and suberin in cell walls, were detected in inoculated tissues. These responses occurred predominantly in the epidermis, including stomatal guard cells, and the hypodermis and were particularly marked in Chamaecyparis lawsoniana inoculated with S. cardinale. The possible utility of these methods in the study and detection of host genotypes resistant to Seiridium spp. is discussed. Key words: Seiridium, Cupressus, Chamaecyparis, micropropagation, in vitro inoculation, defence.
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GRANITI, A. « Seiridium cardinale and other cypress cankers ». EPPO Bulletin 16, no 3 (septembre 1986) : 479–86. http://dx.doi.org/10.1111/j.1365-2338.1986.tb00309.x.

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Tsopelas, P., I. Barnes, M. J. Wingfield et S. Xenopoulos. « Seiridium cardinale on Juniperus species in Greece ». Forest Pathology 37, no 5 (octobre 2007) : 338–47. http://dx.doi.org/10.1111/j.1439-0329.2007.00510.x.

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Barnes, Irene, Jolanda Roux, Michael J. Wingfield, Martin P. A. Coetzee et Brenda D. Wingfield. « Characterization of Seiridium spp. Associated with Cypress Canker Based on ß-Tubulin and Histone Sequences ». Plant Disease 85, no 3 (mars 2001) : 317–21. http://dx.doi.org/10.1094/pdis.2001.85.3.317.

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Cypress canker is a serious disease that has devastated Cupressus spp. in many parts of the world. In Mediterranean Europe it has caused the deaths of millions of trees. Three species of Seiridium, S. cardinale, S. cupressi, and S. unicorne, are associated with cypress canker. Considerable debate surrounds the taxonomic status of these fungi. They have been viewed as a single morphologically variable species, three distinct taxa; or two species based on the presence or absence of conidial appendages. Studies based on ribosomal DNA (ITS1, ITS2, and 5.8S gene) sequence failed to separate the cypress canker fungi. In an attempt to distinguish between the species associated with cypress canker we used histone and partial ß-tubulin sequences of fourteen isolates of Seiridium spp. from cypress. Analysis of sequence data showed Seiridium isolates from Cupressus spp., residing in two major clades. One clade accommodated S. unicorne isolates from Portugal and South Africa. The other major clade consisted of two subclades containing non-appendaged S. cardinale isolates. We believe the larger second clade, represents the cypress canker pathogens while the other clade contains the less pathogenic S. unicorne, which has a host range beyond Cupressus. This study thus provides strong evidence to support previous morphological data suggesting three distinct species are associated with cypress canker.
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Evidente, Antonio, Giacomino Randazzo et Alessandro Ballio. « Structure Determination of Seiridin and Isoseiridin, Phytotoxic Butenolides from Culture Filtrate of Seiridium cardinale ». Journal of Natural Products 49, no 4 (juillet 1986) : 593–601. http://dx.doi.org/10.1021/np50046a006.

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Et, J. Ponchet, et Claudine Andréoli. « Histopathologie du chancre cortical du cypres à Seiridium cardinale ». European Journal of Forest Pathology 19, no 4 (août 1989) : 212–21. http://dx.doi.org/10.1111/j.1439-0329.1989.tb00255.x.

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Urbasch, I. « Natural Occurrence of Seiridium cardinale on Thuja in Germany ». Journal of Phytopathology 137, no 3 (mars 1993) : 189–94. http://dx.doi.org/10.1111/j.1439-0434.1993.tb01338.x.

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Danti, R., S. Barberini, A. Pecchioli, V. Di Lonardo et G. Della Rocca. « The Epidemic Spread of Seiridium cardinale on Leyland Cypress Severely Limits Its Use in the Mediterranean ». Plant Disease 98, no 8 (août 2014) : 1081–87. http://dx.doi.org/10.1094/pdis-12-13-1237-re.

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Leyland cypress (× Hesperotropsis leylandii) is a fast-growing conifer used in most temperate regions as an ornamental tree for hedges and screens, and is one of the most commercially important trees in Europe. In recent years, severe diebacks and mortality due to cypress canker have been observed on Leyland cypress plantations in Southern Europe. This study was conducted to evaluate (i) the spread and impact of cypress canker caused by Seiridium cardinale in plantations of a sample area of 1,250 km2 in central Italy, (ii) the response of the most commonly grown Leyland cypress varieties to artificial inoculation with to S. cardinal, and (iii) the pathogenicity of S. cardinale isolates obtained from Leyland cypress. Of the 1,411 surveyed trees, 11.4% had been killed by cypress canker and 43.9% of the living trees were affected by the disease. The number of diseased or dead trees and the percentage of cankered trunks was significantly correlated with the mean trunk diameter of the plantations. Six months after inoculation, the size of developed cankers was significantly different among the inoculated Leyland cypress cultivars but all of them showed markedly larger cankers than the C. sempervirens canker-resistant control clone. All of the tested S. cardinale isolates obtained from Leyland cypress also caused cankers on Cupressus sempervirens when inoculated as conidial suspensions or mycelia. Leyland cypress is highly prone to contract cypress canker in the Mediterranean due to its high susceptibility to S. cardinale infections, low genetic variability among the grown cultivars, and cracks which form on fast-growing trunks, favoring entry of the fungus into the inner bark and the occurrence of infections.
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Mutto, S., et A. Panconesi. « Ultrastructural modifications in Cupressus sempervirens tissues invaded by Seiridium cardinale ». Forest Pathology 17, no 4-5 (août 1987) : 193–204. http://dx.doi.org/10.1111/j.1439-0329.1987.tb01016.x.

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Madar, Zion, et Nili Liphschitz. « Historical Studies of Cupressus Sempervirens L. Affected by Diplodia Pinea f. sp. Cupressi and Seiridium Cardinale ». IAWA Journal 10, no 2 (1989) : 183–92. http://dx.doi.org/10.1163/22941932-90000487.

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Between 1980 and 1986 two serious diseases of Cupressus sempervirens were found in Israel: Seiridium cardinale and Diplodia pinea. Visual symptoms of both pathogens are similar and are eharaeterised by eanker formation aeeompanied by strong resin secretion from lesions. Histologieal examinations in the eentre of the eanker revea1 similar reaetions of C. sempervirens to Seiridium and Diplodia inoculation. Numerous resin duets are formed in the bark, necrophyllaetie periderm formation oceurs several months after inoculation, disorganisation of the xylem is eonspieuous, produetion of abnormal lignified parenehyma eells instead of traeheids oceur at the injured site, and eurved traeheids and transverse walls are formed. Tannin aeeumulation oceurs in the bark and xylem. Similar reaetions of C. sempervirens to wounding and similar effects of Matsucoccus josephi on Pinus halepensis are diseussed.
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Thèses sur le sujet "Seiridium cardinale"

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Bouaziz, Karima. « Etude d'un modèle de relations tripartites cône-insecte-champignon : rôle de la punaise Orsillus depressus Dallas (Heteroptera : Lygaeidae) dans la vection du champignon pathogène d'origine exotique, Seiridium cardinale (Wag.) Sutton & ; Gibson, responsable de la maladie du chancre du Cyprès en Algérie ». Orléans, 2003. http://www.theses.fr/2003ORLE2030.

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La propagation de la maladie du chancre de cyprès après sa première apparition en Californie, puis la rapidité de son extension en Europe et en Afrique a conduit à postuler l'existence d'une vection liée aux insectes. Dans le milieu algérien, les paramètres biologiques d'O. Depressus et ses conditions de développement dans le cadre climatique la favorise par rapport à O. Maculatus qui est donc dominée. Cette étude a permis de modéliser la transmission du pathogène par O. Depressus et de démontrer la possibilité de diffusion des spores par cet Orsillus. Nos essais certifient que la relation entre S. Cardinale et O. Depressus sur Cupressus sempervirens dépend essentiellement de la disponibilité des sites de ponte. Les femelles disséminent passivement les spores dans les blessures des arbres et sur les cônes sains lors de l'oviposition. Notre étude a mis en évidence l'existence d'un ooparasite, Telenomus gr. Floridanus, dont la morphologie semble très adaptée aux sites de pontes d'Orsillus.
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DELLA, ROCCA GIANNI. « Seiridium cardinale agente del cancro corticale del cipresso : analisi della popolazione europea tramite tecniche morfometriche, molecolari, e test di patogenicità ». Doctoral thesis, 2007. http://hdl.handle.net/2158/568108.

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PEDRON, LUCA. « Gene expression in conifers exposed to biotic and abiotic stresses ». Doctoral thesis, 2008. http://hdl.handle.net/2158/547256.

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