Recent studies in this laboratory have focused on chrysanthemum. Text is available under the creative commons attributionsharealike license. Genetic relationships in an international collection of. Teliosporeinducing activity for wheat leaf rust in the. Puccinia horiana, the causal agent of chrysanthemum white rust, is a pathogen of quarantine.
White rust had not been found in the united states until midseptember of 1977. Highly specific primer pairs were identified for conventional, nested, and realtime pcr detection of p. Most rusts have a very restricted host range, affecting one or a few species. Puccinia horiana on chysanthemum outbreaks in us greenhouses eradicated. Full text pdf 499k abstracts references6 citedby2 to propagate and maintain the pathogen, puccinia horiana p. Chrysanthemum white rust puccinia horiana hennings 1901. Evidence for systemic infection by puccinia horiana. Puccinia horiana pucchndocuments eppo global database. In situ hybridization for the detection of rust fungi in. Cultivation of chrysanthemum chrysanthemum x morifolium originates more than 2000 years ago in asia. Historically, identification protocols for white rust relied upon macroscopic symptom development and microscopic examination of infected leaves for teliospores.
Results from experiments conducted in 2008 and 2009 under production situations show significantly fewer symptoms of white rust puccinia horiana henn. Phylogenetic relationships of puccinia horiana and other rust pathogens of chrysanthemum. Puccinia is a genus of fungi that cause a serious plant disease commonly called rust. Aug 01, 2004 puccinia horiana puccinia horiana 20040801 00. Pdf identification and characterization of pathotypes in. Pdf characterization and detection of puccinia horiana. Jun 30, 2014 chrysanthemum white rust, caused by puccinia horiana henn. It may cause a complete loss of commercial chrysanthemum crops. The disease index of puccinia horiana infection on chrysanthemums was only slightly lower when dithane m45 was applied. Chrysanthemum is currently one of the most important ornamental crops in.
Closed download pest rating proposal authorresponsible party. Chrysanthemum is currently one of the most important ornamental crops in different parts of the world, where it is either grown as cut flowers or as potted plants. Uit veldwaarnemingen werd afgeleid dat het inoculum van deze schimmel over een. Download as pptx, pdf, txt or read online from scribd. It was previously reported to be controlled by lecanicillium lecanii, cladosporium sphaerospermum, c. California pest rating proposal for chrysanthemum white rust puccinia horiana hennings 1901 pest rating. Ae development of symptoms and pustules of the rust pathogen puccinia horiana on the surface of an infected chrysanthemum leaf.
Rust fungi basidiomycota, pucciniomycotina are obligate parasites that infect many species of vascular plants 1, 2. Isolates of the most important puccinia species that have been reported on chrysanthemum. It was then found on one property in pennsylvania and later in october in 14 areas. First report of chrysanthemum white rust puccinia horiana in india article pdf available in plant disease 999. Media in category puccinia horiana the following 3 files are in this category, out of 3 total. Uredinales common names chrysanthemum white rust rouille b. Puccinia horiana is a microcyclic, autoecious rust, meaning that the fungus has two known spore stages. Plants of four varieties were sprayed 8 times weekly. Phylogenetic analyses using distance, maximum likelihood and bayesian methods confirmed p. To our knowledge this is the first report of chrysanthemum white rust crw in india. Puccinia mccleanii on gladiolus known only from type rhacodiella vitis on grape known only from type septoria melanosa on grape reported in north america. Pcrbased assays for the detection of puccinia horiana on chrysanthemums. Chrysanthemum white rust puccinia horiana chrysanthemum white rust cwr is a usda quarantined plant pathogen that poses a potential trade barrier to growers of chrysanthemums in virginia if introduced. Phylogenetic relationships of puccinia horiana and other.
Characterization and detection of puccinia horiana on chrysanthemum for resistance breeding and sustainable control. Pcrbased assays for the detection of puccinia horiana on. It was then found on one property in pennsylvania and later in october in 14 areas in new jersey adjacent to the original find. A report on plant diseases of the state 1905 14781564782. Sporulation capacity and longevity of puccinia horiana. These materials may be used as long as the original author is given credit. An extremely low level of allelic diversity was observed in a geographically diverse set of eight isolates. Chrysanthemum white rust puccinia horiana chrysanthemum white rust cwr is a usda quarantined plant pathogen that poses a potential trade barrier to growers. The disease also poses a risk of increasing management costs if introduced into the commonwealth as control.
General information about puccinia horiana pucchn name language. Symptoms of puccinia horiana at the start of infection. Puccinia mccleanii on gladiolus known only from type rhacodiella vitis on. Other important rust hosts in nurseries include acacia, blueberry. Pdf first report of chrysanthemum white rust puccinia. Plants were treated 4 times at a 10 day interval and infested plants were placed. A composition containing a compound represented by formula i, and at least one type of compound selected from a group consisting of pyriofenone, metrafenone, cyflufenamid, quinoxyfen, and. Note that at 14 dai, whitish areas have developed where pustules will later develop.
Characterization and detection of puccinia horiana on. Infection mainly starts at the upper surface of the leaf and causes pale green to yellow spots up to 4 mm in diameter and then forms raised buff or pinkish pustules on the lower surface of the leaf. The obligate biotrophic pathogen puccinia horiana is the causal agent of chrysanthemum white rust. Jan 01, 2018 cultivation of chrysanthemum chrysanthemum x morifolium originates more than 2000 years ago in asia. In countries where it is known to occur, cwr is a serious disease in nurseries. The focus of this study was on puccinia horiana, due to its quarantine status and its impact in commercial chrysanthemum production. However, it has since spread rapidly on infected imported cuttings and is now a feared and serious disease in nurseries in europe, frequently causing complete loss of glasshouse chrysanthemum crops. Puccinia horiana hennings, the causal agent of chrysanthemum white rust, is a worldwide quarantine organism and one of the most important fungal pathogens of chrysanthemum. The establishment of a cooperation program between the colombian institute of agriculture, ica, and the colombian association of flower exporters, asocolflores, has helped in the design and application.
Synopsis of fungi listed as regulated plant pests by the. Chrysanthemum white rust, caused by puccinia horiana henn. Files are available under licenses specified on their description page. Puccinia horiana pucchnoverview eppo global database.
Puccinia horiana henn description telia on lower leaf surface, circular, 0. Synopsis of fungi listed as regulated plant pests by the usdaaphis. The establishment of a cooperation program between the colombian institute of agriculture, ica, and the colombian association of flower exporters, asocolflores, has helped in the design and application of coordinated strategies for both, prevention and eradication of the chrysanthemum white rust puccinia horiana henn. Evaluating the threat posed by fungi on the aphis list of. Jan 01, 2018 the obligate biotrophic pathogen puccinia horiana is the causal agent of chrysanthemum white rust. This exotic pathogen has made occasional appearances in the u. Puccinia triticina wheat leaf rust, also known as brown rust puccinia punctiformis canada thistle rust 3 the rust species puccinia obtegens has shown some promise for controlling canada thistle, but it. The effectiveness of funqicides in the control of white. All structured data from the file and property namespaces is available under the.
Puccinia horiana is the causal agent of chrysanthemum white rust or japanese rust. On the incubation period of puccinia horiana springerlink. Pdf evidence for systemic infection by puccinia horiana. A major threat in commercial chrysanthemum production is chrysanthemum white rust, caused by the quarantine fungus puccinia. Jun 06, 2019 california pest rating proposal for chrysanthemum white rust puccinia horiana hennings 1901 pest rating. Notes on nomenclature, disease, plant hosts and geographic distribution puccinia gladioli. By 42 dai necrosis is apparent in the vicinity of the pustules. The disease was completely suppressed in the combinations with plantvax, saprol, calirus, bayleton 5 wp. Puccinia triticina wheat leaf rust, also known as brown rust puccinia punctiformis canada thistle rust 3 the rust species puccinia obtegens has shown some promise for controlling canada thistle, but it must be used in conjunction with other control measures to be effective. The disease was completely suppressed in the combinations with plantvax, saprol, calirus, bayleton 5 wp, baycor and vigilex. All structured data from the file and property namespaces is available under the creative commons cc0 license. This microcyclic autoecious rust has a quarantine status and can cause major damage in the commercial production of chrysanthemum x morifolium.
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