The specificity of the reaction was assessed using a number of fungi taxonomically and ecologically related to m. Biological control of monosporascus cannonballus by chaetomium article pdf available in fitopatologia brasileira 321. What macrofungi all have in common is that they form structures called fruiting bodies or sporocarps these sporocarps are typically the above ground part of the mushroom that you see. The role of monosporascus cannonballus in melon collapse in. Effect of variety and plant density on growth and yield of. Solarization was carried out in 1997 for 15 a and 35 b days in a medium placed in shallow layer sh. Notes from nature has seen a lot of activity since before wedigbio lite.
Soil fungicide application in combination with grafting for. Improvement in salt tolerance by grafting in tomato and melon was related to the capability of rootstocks to avoid physiological damages caused by. Sudden wilt of most infected plants occurred in the field at 2 weeks before harvesting. Abstracts of speakers in opening plenary session what makes for an emerging invasive species. Population structure of monosporascus cannonballus. Improved solarization of containerized medium for the.
The extreme depletion of nutrients, in particular phosphorus, results in low primary production in waters distant from the coast 25. Soil organisms and global climate change pritchard. Vine decline of melons, caused by the rootinfecting ascomycete monosporascus cannonballus, is characterized by the sudden and generally uniform canopy collapse of entire fields 1 to 2 weeks before harvest. Miridae feeding and oviposition injury on celery seedlings. Absence of avp1 transcripts in wild type watermelon scions. The western tarnished plant bug, lygus hesperus knight hemiptera. Quantitative detection of monosporascus cannonballus in.
Efficacy of fluazinam in suppression of monosporascus. Jan 10, 2011 for example, the root rot pathogen monosporascus cannonballus was shown to reproduce more rapidly at higher temperatures waugh et al. Acremonium cucurbitacearum, monosporascus cannonballus. In muskmelon and watermelon, there was a decrease of ascospore counts in soil from transplanting until first symptoms of vine decline were observed. Comparative epidemiology of monosporascus root rot and. Soil fungicide application in combination with grafting for the control of.
In fact, we have had 11 straight days with over 5,000 transcriptions. A disease with symptoms similar to melon collapse has been observed in hot and arid regions of iran. Abstract the fungal species monosporascus cannonballus and m. Effectiveness of tinospora cardifolia stem extract on bacteria. The specificity of the reaction was assessed using a number of fungi taxonomically and ecologically. However, a detailed molecular view on the early interaction between m. Aspetti genetici e fisiologici dellinnesto in orticoltura.
Monosporascus root rot and vine decline caused by monosporascus cannonballus is one of the most important melon yieldlimiting diseases in northeastern brazil. We do not use these to store personal information about you. Soil fungicide application in combination with grafting. The role of monosporascus cannonballus in melon collapse.
In our research, we evaluated the reaction of 45 melon genotypes to m. Monosporascus is a genus of fungi in the class sordariomycetes. Effects of crop sequences on soil population dynamics of. Monosporascus root rot and vine decline mrrvd is an important disease in the melon crop in brazil. For example, the root rot pathogen monosporascus cannonballus was shown to reproduce more rapidly at higher temperatures waugh et al. Soil disinfestation by fumigation with methyl bromide before planting is a common treatment for disease management but, because methyl bromide is expected to be banned from use within the next 10 years, alternative measures for disease suppression are needed. Monosporascus cannonballus is a species of fungus in the sordariales. This pathogen is highly adapted to hot and dry areas and is often evenly distributed in fields resulting in devastating yield losses. Pdf first report of monosporascus cannonballus on melon. The population structure of monosporascus cannonballus, which causes vine decline in melons, was assessed based on the determination of mycelial compatibility groups mcgs in a collection of 58 isolates obtained from seven melon fields in three municipalities of northeastern brazil.
Yield of muskmelon cucumis melo as affected by fumigants in fields infested with monosporascus cannonballus. After repeated laboratory transfer on culture media, the majority of the isolates. General information about monosporascus cannonballus mspscb this website uses cookies our website uses cookies to ensure that we give you the best possible online experience. Root transcriptional responses of two melon genotypes with. Miridae feeding and oviposition injury on celery seedlings shimat v. Sep 19, 2007 a method was developed for the specific detection, identification and quantification of monosporascus cannonballus in infected melon roots based on realtime pcr sybr green chemistry targeting the its1 region of the rdna conserved between different strains of the pathogen. Population structure of monosporascus cannonballus isolated. Ramon ahedo, university of california cooperative extension monterey county, salinas 93901, and hartnell college. Fungal species belonging to the ascomycete genus monosporascus have no known asexual morph and the ascocarp is a globose perithecium where asci develop, containing from 1 to 6 spherical ascospores, depending on the species. Monosporascus root rot and vine decline caused by monosporascus cannonballus is one of the most important melon yieldlimiting diseases in northeastern brazil this study investigated the fitness components of 57 isolates of m. Monosporascus eutypoides, a cause of root rot and vine. This study investigated the fitness components of 57 isolates of m. Monosporascus cannonballus melon, watermelon, meloidogyne spp.
It has become the main limiting factor for cantaloupe production in n. We have a fun new activity, assuming you like cooties that is. Efsa scientific colloquium xvi on emerging risks in plant health, parma, 9 10 june 2011 6 2. Added in 1999 deleted in 2001 reasons for deletion doubts were expressed about the distribution of acremonium cucurbitacearum, monosporascus cannonballus and rhizopycnis vagum in the eppo region probably already present. Pathogenicity test of different fungal isolates was. Improved solarization of containerized medium for the control. Monosporascus eutypoides, a cause of root rot and vine decline in tunisia, and evidence that m. In greenhouse inoculation tests, the methods of soil tube inoculation, pot inoculation, and microplot 350. Final technical report 1 september 2005 31 january 2006 dr mike rutherford cabi bioscience, uk centre, egham, surrey, tw20 9ty 31 january 2006 this publication is an output from a research project funded by the united kingdom department for international development for the benefit of developing countries. Microbemediated germination of ascospores of monosporascus. However, asci in some genera or species can number one e. Monosporascus cannonballus pollack et uecker is an ascomycete soilborne pathogen adapted to hot, arid and semiarid areas that causes rootrot vine decline. Pathogen latency periods are also controlled largely by degree. Soil fumigation use resistance varieties chemical control only members of cucurbitaceae melon cucumis melo watermelon citrullus lanatus cucumber cucumis sativus symptoms monosporascus cannonballus monosporascus root rot and vine decline symptoms the feature sexual.
Pdf first report of monosporascus cannonballus on melon in. References this sordariomycetesrelated article is a stub. Temperature changes will also influence quantitative. Tympanis with hundreds of conidia, or the ascospores may fragment, e. However, little or no germination occurred in the rhizosphere of melon plants growing in field soil that. Effects of crop sequences on soil population dynamics of monosporascus cannonballus ascopsores and monosporascus root rot and vine decline incidence riunet. However, no pathogen has been yet reported to be associated with this disease. Once the ascospore germinates in the vicinity of the root, the fungus can penetrate and infect the melon root. Improvement in salt tolerance by grafting in tomato and melon was related to the capability. Continuing to use this website means you agree to our use of cookies.
Pdf first report of root rot and vine decline of melon. The temperatures recorded inside the shallow layer medium were higher during the daytime than those in the regular containers in both years. The vine decline caused by monosporascus cannonballus is a limiting factor in different crops in several countries. Comparative epidemiology of monosporascus root rot and vine. Doublestranded rna dsrna was identified in approximately 60% of m. Introduction monosporascus cannonballus is a soilborne, root infecting ascomycete. In a few cases, the ascospores can bud off conidia that may fill the asci e. Monosporascus cannonballus, two, four, or multiples of four. Control practices of this disease have not been successful. Currently, there are no effective control measures for monosporascus root rotvine decline available and genetic resistance is inadequate in commercial cultivars. Abstract ascospores of monosporascus cannonballus germinated readily in the rhizosphere of cantaloupe plants growing in field soil.
Effect of solarization on the number of monosporascus cannonballus ascospores germlings attached to the roots of melon seedlings. Quantification of monosporascus cannonballus ascospores in commercial muskmelon fields in south texas. Comparisons of root morphology in susceptible and tolerant melon cucumis melol. The respective temperatures for the shallow layer medium were 58.
Iosr journal of agriculture and veterinary science iosrjavs eissn. Monosporascus cannonballus is an ascomycete fungus that is the causative agent of monosporascus root rotvine decline, a serious disease of muskmelon and watermelon. Miridae, can be a serious pest of celery, apium graveolens dulce mill. The most susceptible hosts are cantaloupe and watermelon and, to a lesser extent, honeydew melons. Analysis of microsatellites from the transcriptome of. Infection of roots may occur via germinating ascospores andor active. Resistance in melon to monosporascus cannonballus and m. Monosporascus cannonballus is the main causal agent of melon vine decline disease. Mini data sheet on acremonium cucurbitacearum, monosporascus. The soilborne pathogen monosporascus cannonballus is the greatest yieldlimiting factor to muskmelon production in these states causing severe losses in some years. The host range of monosporascus cannonballus in taiwan.
For example, on august 7, 1997 maximal temperature at a depth of 3 cm was 55. Monosporascus cannonballus caused root rot and vine decline of muskmelon. This disease has severe economic impact on global melon cucumis melo l and watermelon citrullus lanatus thunb. Monosporascus root rot and vine decline mrrvd, caused by monosporascus cannonballus, has become one of the most important diseases of melon worldwide.
Monosporascus cannonballus infected plants usually do not develop symptoms until near harvest time. Disease progression and soil population dynamics of monosporascus cannonballus ascospores were studied and compared through the entire growing season in muskmelon, watermelon, and watermelon grafted onto cucurbita rootstock crops. Soil organisms and global climate change pritchard 2011. The vine decline of cantaloupe plants, monosporascus cannonballus is a worldwide disease particularly in arid and semiarid regions under warm and hot weather conditions.
Monosporascus root rot vine decline vegetable resources. The relationship of this taxon to other taxa within the class is unknown incertae sedis. Global diversity and distribution of macrofungi gregory m. Microbemediated germination of ascospores of monosporascus cannonballus. Pdf biological control of monosporascus cannonballus by. Role of monosporascus cannonballus and other fungi in a root rotvine decline disease of muskmelon. Submitted 16 december 2016 accepted 2 april 2017 published 2 may 2017 corresponding authors emma c.
Sudden wilt vine decline of melon, caused by monosporascus cannonballus, is a worldwide problem in arid and semiarid regions. Monosporascus cannonballus is a soilborne, root infecting ascomycete. Monosporascus, rhizoctonia, pythium and macrophomina were isolated from diseased roots of cantaloupe. In muskmelon and watermelon, there was a decrease of ascospore counts in soil from transplanting until first. Several studies have been carried out mainly focused on the study of the penetration of this pathogen into melon roots, the evaluation of symptoms severity on infected roots, and screening assays for breeding programs. Melon collapse is an economically important disease worldwide, induced by several soilborne plant pathogens includingmonosporascus cannonballus. Using soil tube method, the ascospores could germinate in the rhizosphere and the. Biological control of monosporascus cannonballus monosporascus cannonballus is a somewhat unique pathogen in that it appears to require both cucurbit root exudates in combination with certain microbes for germination of the ascospore. Brown lesions may be found on the roots image 3, even on plants that are not wilting.
Joseph, university of california cooperative extension monterey county, salinas 93901. Each avp1 gene in 24 two bottle gourd t3 lines is abundantly expressed under a field. Monosporascus cannonballus wikipedia, a enciclopedia livre. Comparative efficacy of chemical and biological methods. Fitness components of monosporascus cannonballus isolates.
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