Olive patents and patent applications class plt158. The aim of this work was to conduct a field survay to assess the incidence % infected leaves and severity number of lesionsleaf of ols in different regions in palestine. Field models for the prediction of leaf infection and. For the resistant variety, these symptoms are composed of small necrotic lesions, whereas for the susceptible variety, they appear as extended necrotic spots. Pdf survey of spilocaea oleagina, causal agent of olive leaf spot. Limited information is available on pathogen survival and disease epidemiology. Olive scab caused by the mitosporic fungus spilocaea oleagina is the most important foliar disease of olive. Field models for the prediction of leaf infection and latent. Its causal agent, formerly spilocaea oleaginea, syn. Effects of temperature, inoculum concentration, leaf age.
The presence of free moisture on the leaves is crucial for the conidia to. Media in category spilocaea oleaginea the following 2 files are in this category, out of 2 total. Effects of temperature, inoculum concentration, leaf age, and. This is spilocaea oleagina in lebanon by feeding knowledge on vimeo, the home for high quality videos and the people who love them. The life cycle of the causative agent, spilocaea oleagina is dependent on climatic conditions, which the most important are temperature and humidity obanor et al, 2008. 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. Consistent annual treatment helps future olive leaf spot control pdf. Pessl instruments olive scab or leaf spot, spilocaea oleagina. 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. Pdf epidemiology of leaf spot of olive tree caused by. Olive, pests if you see many leaves falling off from your olive tree, and there are blackish stains on the surface of the leaves, this means that it is suffering olive spot. Olive leaf spot caused by the fungus, spilocaea oleagina, is the most important leaf.
Viruega jr, trapero a 1999 epidemiology of leaf spot of olive tree caused by spilocaea oleagina in southern spain. Olive, pests if you see many leaves falling off from your olive tree, and there are blackish stains on the surface of. Olive scab or leaf spot, caused by the fungus spilocaea oleagina. Taxonomyofthegenusventuria the genus venturia belongs to the phylum ascomycota, class dothideomycetes schoch et al. Microsoft windowsbased freeware for population genetic analysis. The role of phenolic metabolism in the defense of the. It causes leaf abscission and, eventually, whole tree weakness, resulting in a subsequent loss in crop yield. Spilocaea oleaginea is the fungus which causes olive leaf spot, also known as peacock spot, an olive tree disease.
The effect of local fungicides on conidial germination of spilocaea oleagina in palestine. Peacock leaf spot, caused by the fungus spilocaea oleagina, is among the most common fungal diseases in olive. Losses arise mostly from defoliation of severely infected trees, with consequently reduced yield. According to results of previous studies obanor et al, 2011. Peacock spot disease, caused by spilocaea oleagina, in the region of gharb and ouazzane morocco. The disease affects trees throughout the growing season and can cause significant losses in yield. The author has studied the anatomical characters comparatively between two cv. Pdf evaluation of the incidence and severity of olive.
Sep 27, 2007 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. Resistance of olive tree to spilocaea oleagina is mediated by the synthesis of phenolic compounds article pdf available in international journal of agriculture and biology january 2010 with. Fusicladium oleagineum, the fungal causal agent of olive. Article full text enhanced pdf format, 303501 bytes. The holes in the pot are clogged at the bottom of the pot. Spilocaea pomi article about spilocaea pomi by the free. Olive scab or leaf spot, caused by the fungus spilocaea oleagina, is widespread in the mediterranean region. Ishs iii international symposium on olive growing epidemiology of leaf spot of olive tree caused by spilocaea oleagina in southern spain. Peacock spot, spilocaea oleagina, disease prevalence, disease severity, iran. The effect of local fungicides on conidial germination of. Pdf survey of the fungal species associated to olive.
Pdf olive scab caused by the mitosporic fungus spilocaea oleagina is the most important foliar disease of olive. The role of phenolic metabolism in the defense of the olive. Palestine, spilocaea oleagina, peacock spot, disease severity, olea europaea. Olive leaf spot ols caused by the fungus spilocaea oleagina cast. The disease is also called peacocks eye, and the main symptom in olive trees is circular lesions, sometimes with a chlorotic halo on the. Further details may be available for individual references in the distribution table details.
Survey of spilocaea oleagina, causal agent of olive leaf spot. The fungus causes leaf drop which robs the tree of vegetative energy leading to smaller crops and poor growth. Olive leaf spot or peacock spot, caused by the fungal pathogen spilocaea oleagina, can cause reduced growth and yield in olive trees olea eurapaea. Biologyandepidemiologyof venturia speciesaffectingfruit. Molecular analysis of the interaction between olea europaea and the biotrophic fungus spilocaea oleagina yoselin benitez 1, miguel a. Spilocaea oleaginea is a deuteromycete fungal plant pathogen, the cause of the disease olive. The distribution in this summary table is based on all the information available. Application of leaf extracts of ambrosia artemisiifolia to control. As a realworld application of this architecture and the proposed methodologies, we show an application to the problem of modeling two plagues of the olive tree. Pdf resistance of olive tree to spilocaea oleagina is. Global warming and its effect on dermatology and plants. Epidemiology and control excerpts from the report prepared by friday obanor, phd candidate, lincoln university, december 2005. The life cycle of the causative agent, spilocaea oleagina is dependent on climatic.
The luxi and luxr quorum sensing genes in pseudomonas savastanoi pv. Ols is the most important leaf disease of olive in many olive. Cycloconium oleagineum, was recently assigned to fusicladium oleagineum on the basis of morphological and genotypic traits. Pdf olive leaf spot or peacock spot, caused by the fungal pathogen spilocaea oleagina, can cause reduced growth and yield in olive. 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. Climatic factors influence the emergence and reemergence of infectious diseases by shifting the geographic range of the insect vector and lengthening the reproductive cycles of insects. Peacock leaf spot, sometimes also referred to as olive scab, olive leaf spot or cycloconium leaf spot, is one of the most common diseases of olive olea europaea trees worldwide obanor et al. 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%. International journal of scientific research in science and technology. The results show that the architecture presented in this paper significantly decreases the.
Guideline for the biological evaluation of fungicides spilocaea oleagina olive leaf spot 1. Although much is known about the effect of climatic conditions on the development of peacock leaf spot of olive, field. 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. Epidemiology of leaf spot of olive tree caused by spilocaea oleagina in southern spain article pdf available in acta horticulturae 474474. Influence of certain cultural practices and variable climatic.
Palestine technical university research journal, 21. Download adobe acrobat reader free software to read pdf files. Investigations were carried out during 20072010 to measure the prevalence and severity of olive leaf spot in the northern olive growing regions of iran. The fungus spilocaea oleagina causes peacock leaf spot in olive. Production of propagation stock the nuclear stock is multiplied in as few steps as possible to. Molecular analysis of the interaction between blackwell. Leccino not receptive anatomical differences of the leaf as a whole and. Spilocaea oleagina is a deuteromycete because it has no known sexual stage. Use the link below to share a fulltext version of this article with your friends and colleagues. Genetic variation in spilocaea oleagina populations from new. Olive scab or leaf spot, spilocaea oleagina pessl instruments. Pdf evaluation of the incidence and severity of olive leaf. Timing of fungicide applications and their high costs and possible effects on human health and the environment are critical for an effective control.
Uspp77p2 us09670,008 us67000800v uspp77p2 us pp77 p2 uspp77 p2 us pp77p2 us 67000800 v us67000800 v us 67000800v us pp77 p2 uspp77 p2 us pp77p2 authority us united states prior art keywords carlo don olea europaea shape position prior art date 20000925 legal status the legal status is an assumption and is not a legal. Spilocaea oleagina, olivetree scab neves evaristo f. Olive leaves with obvious ols symptoms were cut into 5 2 cm segments, placed in a tube containing 5 20ml sterile distilled water and shaken vigorously. Resistance of olive tree to spilocaea oleagina is mediated by the synthesis of phenolic compounds. Spilocaea oleagina induces a foliar necrosis whose speed of onset and expansion distinguishes clearly the two studied varieties according to their behaviour to the leafspot disease. Survey of the fungal species associated to olivetree olea europaea l. The plants should also be visually inspected each year for possible mutations. Phylogenyofthefungus spilocaea oleagina,thecausalagentof. Full length article resistance of olive tree to spilocaea.
Occhio di pavone o cicloconio spilocaea oleagina youtube. This disease is widespread in many olivegrowing regions of the world trapero casas et al. Post jobs, find pros, and collaborate commission free in. Phylogeny of the fungus spilocaea oleagina, the causal.
Evaluation of the incidence and severity of olive leaf. Osser vazioni anatomiche su foglie di olivo sane ed. Olive leaf spot ols, also called peacock spot, is caused by the fungus spilocaea oleagina syn. Anatomical observations on sound leaves and by spilocaea oleagina cast. Silicon reduces the incidence of venturia oleaginea.
All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. This is spilocaea oleagina in lebanon by feeding knowledge on vimeo. Phylogeny of the fungus spilocaea oleagina, the causal agent. Bacterial isolates used in this study varied in their in vitro control activity against the leaf spot olive fungus c oleaginum. University of california, division of agriculture and natural. Spilocaea oleagina in olive groves of southern spain. Symptoms are mainly confined to leaves and appear as dark brown, circular, zonate spots surrounded by yellow haloes peacocks eye. The disease is controlled by application of coppercontaining fungicides prior to winter rains. Evaluation of the incidence and severity of olive leaf spot caused by spilocaea oleagina on olive trees in palestine abstract fulltext html download as pdf size. The tree is distinctly important in the economic and social life of the people.
However, no conidia germinates without free water even after 48 h of. The similarity extends beyond the clinical appearance to a recent increase in the frequency of both in the area of naples, italy. 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. Pdf spilocaea oleagina in olive groves of southern spain. This plant disease commonly affects the leaves of olive trees worldwide. Global warming or climate tropicalization is the cause of increasing temperature and humidity in the temperate areas of europe and north america. When several references are cited, they may give conflicting information on the status.