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Anthracnose
Identify and control for this disease that often appears as reddish-brown spots surrounded by a narrow yellow halo, primarily in centipedegrass. This revised 2-page fact sheet was written by M. L.
Identification of Species in the Botryosphaeriaceae Family Causing Stem Blight on Southern Highbush Blueberry in Florida.
TLDR
Breeding for resistance and management of stem blight and dieback in Florida should focus on these two dominant species recovered from SHB: Lasiodiplodia theobromae and Neofusicoccum ribis.
Genetic characterization of Blueberry necrotic ring blotch virus, a novel RNA virus with unique genetic features.
TLDR
Sequencing revealed the presence of a novel RNA virus with a ~14 kb genome divided into four RNA segments that possesses protein domains conserved across RNA viruses in the alpha-virus-like supergroup, and a new genus is proposed for the classification of BNRBV.
Emergence and accumulation of novel pathogens suppress an invasive species.
TLDR
The results suggest that invasive species can facilitate pathogen emergence and amplification, raising concerns about movement of pathogens among agricultural, horticultural, and wild grasses, however, one possible benefit of pathogen accumulation is suppression of aggressive invaders over the long term, potentially abating their negative impacts on native communities.
Identification of a New Waitea circinata Variety Causing Basal Leaf Blight of Seashore Paspalum.
TLDR
The range of potential turfgrass hosts and environmental conditions conducive for disease development suggest that the pathogen may infect other species in addition to seashore paspalum, which is a saline-tolerant, warm-season turfgrass species popular for golf course use in tropical and subtropical climates.
A Rapid Resazurin-Based Microtiter Assay to Evaluate QoI Sensitivity for Alternaria alternata Isolates and Their Molecular Characterization.
TLDR
A rapid microtiter bioassay based on the colorimetric changes of resazurin (RZ) dye was developed to evaluate the sensitivity of Alternaria alternata to quinone outside inhibitor (QoI) fungicides, and genetic variability associated with the presence or absence of two introns was observed among isolates.
Evidence for morphological, vegetative, genetic, and mating-type diversity in Sclerotinia homoeocarpa.
TLDR
Dollar spot disease of turfgrass in Florida is caused by two distinct morphological types of S. homoeocarpa which may be cryptic species and suggest heterothallic control of mating and indicate potential for outcrossing in both groups.
A Rapid PCR-Based Method for the Detection of Magnaporthe oryzae from Infected Perennial Ryegrass.
TLDR
A polymerase chain reaction (PCR)-based method was developed and evaluated and found to be reliable for the extraction of M. oryzae DNA from infected perennial ryegrass tissue.
First Report of Gray Leaf Spot on Perennial Ryegrass in Indiana.
TLDR
Pyricularia grisea, the causal agent of gray leaf spot on turfgrass, was isolated from symptomatic perennial ryegrass leaves collected from a golf course in north-central Indiana in August 1999, and symptoms were first evident in taller mown, rough areas surrounding golf course fairways.
Potential global and regional geographic distribution of Phomopsis vaccinii on Vaccinium species projected by two species distribution models
TLDR
The NPDN database was shown to be an important source of information for the prediction of the potential global distribution of a plant pathogen and the models correctly predicted that the climate in the central and eastern USA and the west coast of the USA and Canada would be conducive to blueberry twig blight.
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