Phylogeny of the fungus spilocaea oleagina, the causal. Olive leaf spot ols caused by the fungus spilocaea oleagina cast. Resistance of olive tree to spilocaea oleagina is mediated by the synthesis of phenolic compounds. Overall, tetraconazole reduced the disease and, as a systemic action, may be associated with dodine or copper to control spilocaea oleagina particularly when the disease is well developed.
Effect of cacl2 and tween 80 on the biocontrol activity of yeasts. Evaluation of the incidence and severity of olive leaf spot caused by spilocaea oleagina on olive trees in palestine 459 the relationship between disease incidence and disease severity is described by a linear regression figure 4. Losses arise mostly from defoliation of severely infected trees, with consequently reduced. This very common disease occurs throughout olivegrowing regions. Olive leaf spot ols disease or peacock disease is caused by the fungus spilocaea oleagina, it is the most destructive disease on olive trees in most regions of palestine. Effect of temperature, relative humidity, leaf wetness and leaf age on spilocaea oleagina conidium germination on olive leaves. Phylogenyofthefungus spilocaea oleagina,thecausalagentof. Dieses kostenlose tool erlaubt es mehrere pdfs oder bilddateien miteinander zu einem pdfdokument zu verbinden. Timing of fungicide applications and their high costs and possible effects on human health and the environment are critical for an effective control. Currently, there are more than 20 different fungicides sold in the palestinian market. Recents works that used both morphological and molecular characters concluded. Mazen salman this thesis was submitted in partial fulfillment of the requirements for the. Fixed percentages of infection ranged from 0% at all locations up to 100% infection.
International journal of scientific research in science and technology. Pdf zusammenfugen pdfdateien online kostenlos zu kombinieren. Pdf zusammenfugen online pdf dateien zusammenfugen. Epidemiology and control excerpts from the report prepared by friday obanor, phd candidate, lincoln university, december 2005.
Pdf survey of spilocaea oleagina, causal agent of olive. Evaluation of the incidence and severity of olive leaf. Biologyandepidemiologyof venturia speciesaffectingfruit. Genetic variation in spilocaea oleagina population from new zealand olive groves article pdf available in australasian plant pathology 396 november 2010 with 351 reads how we measure reads. Briefly, the plant material was digested in nitric acid 33% under high pressure in a microwave. The present invention comprises a new and distinct selection of olea europaea l. All structured data from the file and property namespaces is available under the creative commons cc0 license. In turkey, studies on olive pathology have concerned spore release, overwintering and control of spilocaea oleagina, control of pseudomonas syringae subsp. Survey of spilocaea oleagina, causal agent of olive leaf. The disease affects trees throughout the growing season and can cause significant losses in yield. An assessment of peacock olive leaf spot spilocaea. Spilocaea oleagina infections appear as circular, brown to black spots on the leaves. Assignment to these genera depends on the morphology of the conidiogenous cells. Pdfdateien miteinander zu verbinden bezeichnet man auch als pdfmerge.
Pdf effect of temperature, relative humidity, leaf. Pdf relative susceptibility of new olive cultivars to. This plant disease commonly affects the leaves of olive trees worldwide. Genetic variation in spilocaea oleagina populations from. Morphological and histochemical investigation of the response of olea europaea leaves to fungal attack by spilocaea oleagina. Of the total number of sampled locations, only twelve of them had percentage of infection lower than 10% which is the threshold tolerance spilocaea oleagina castagne hughes fungus infection.
Files are available under licenses specified on their description page. Download fulltext pdf survey of the fungal species associated to olivetree olea europaea l. Ishs iii international symposium on olive growing epidemiology of leaf spot of olive tree caused by spilocaea oleagina in. View enhanced pdf access article on wiley online library html view download pdf for offline viewing. Oss was evaluated in 92 epidemic events, which occurred in 14 locations in the andalusia region southern spain for 16 years. Pdf epidemiology of leaf spot of olive tree caused by. The effect of local fungicides on conidial germination of spilocaea oleagina in palestine. Survey of the fungal species associated to olivetree olea europaea l. The effect of local fungicides on conidial germination of. Effects of temperature, inoculum concentration, leaf age. Olive leaf spot caused by the fungus, spilocaea oleagina, is the most important leaf disease of olives in many olivegrowing regions worldwide with yield losses of up to 20%. The disease is controlled by application of coppercontaining fungicides prior to winter rains.
Culture of fo on solidified a mea, b pda and c sole. Olive leaf spot ols is found in many parts of the world and cause readuced growth and yield in olive trees. Effect of temperature, relative humidity, leaf wetness and. Losses arise mostly from defoliation of severely infected trees, with consequently reduced yield. Ph spilocaea oleagina 5 12 ph ph10 spilocaea oleagina. Peacock spot is also known as olive leaf spot or birds eye spot and it is caused by a fungus. The effects of temperature, relative humidity rh, leaf wetness and leaf age on conidium germination were investigated for spilocaea oleagina, the causal organism of olive leaf spot. The mitosporic fungus spilocaea oleagina is an obligate biotroph of olive olea europaea causing a scab disease associated with leaf fall and substantial losses in production.
Epidemiology of leaf spot of olive tree caused by spilocaea oleagina in southern spain article pdf available in acta horticulturae 474474. In this study, investigations were carried out to measure the incidence % infected leaves and severity number of lesionsleaf of ols in olive growing regions in palestine, including the regions of hebron, bethlehem, tulkarm, salfit, jenin, nablus, ramallah and qalqilyah. Investigations were carried out during 20072010 to measure the prevalence and severity of olive leaf spot in the northern olive growing regions of iran. A longterm study on the effect of agroclimatic variables.
Conservolea leaves to attack by the fungal pathogen spilocaea oleagina. Pdf molecular analysis of the interaction between olea. Research on olive leaf spot, olive knot and verticillium. Salman palestine technical universitykadoorie ptuk, b. Olive leaf spot or peacock spot, caused by the fungal pathogen spilocaea oleagina, can cause reduced growth and yield in olive trees olea eurapaea. Full length article resistance of olive tree to spilocaea. Pdf evaluation of the incidence and severity of olive. The disease is controlled by application of copper containing fungicides. Abstract one of the major problems threatening the young new zealand olive industry is olive leaf spot ols, also called peacock spot, caused by a fungus, spilocaea oleagina. Article full text enhanced pdf format, 180766 bytes article sharing repository deposits. Cultivars vary in their susceptibility, but all are subject to infection. Ph spilocaea tishreen university journal for research and scientific studies biological sciences series vol. The fungus spilocaea oleagina causes peacock leaf spot in olive. Pdf resistance of olive tree to spilocaea oleagina is.
Application of leaf extracts of ambrosia artemisiifolia to control spilocaea oleagina the causal agent of olive leaf spot disease on olive trees. In order to get insight, an in vitro culture of the fungus has been established and its identity confirmed by amplified fragment length polymorphism analysis. Spilocaea oleaginea is a deuteromycete fungal plant pathogen, the cause of the disease olive peacock spot, also known as olive leaf spot and birds eye spot. Using differential display we have identified 162 cdna fragments. Fusicladium oleagineum, the fungal causal agent of olive. In order to get insight, an in vitro culture of the fungus has been established and its identity confirmed by. These cells are sympodial in fusicladium and percurrent in pollaccia and spilocaea hughes, 1953.
Morphological and histochemical investigation of the. Article full text enhanced pdf format, 303501 bytes. Role of overwintering forms of erysiphe necator in epidemiology of. Olea europaea cultivar don carlo exhibits medium plant vigor, erect on average branch. Survey of spilocaea oleagina, causal agent of olive leaf spot, in north of iran article pdf available march 2011 with 464 reads how we measure reads.
Pdf survey of the fungal species associated to olive. Palestine technical university research journal, 21. Pdf effect of cacl2 and tween 80 on the biocontrol. Silicon reduces the incidence of venturia oleaginea. Pdf genetic variation in spilocaea oleagina population. In both experiments, 1 week before the inoculation with v. Unter dem namen hat sich ein kostenloses onlineangebot. This study investigated the response of olea europaea cv. Symptoms are mainly confined to leaves and appear as dark brown, circular, zonate spots surrounded by yellow haloes. Relative susceptibility of new olive cultivars to spilocaea oleagina, colletotrichum acutatum, and pseudocercospora cladosporioides. Olive scab or leaf spot, caused by the fungus spilocaea oleagina, is widespread in the mediterranean region.
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