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Host Range of Puccinia psidii, a Potential Biological Control Agent of Melaleuca quinquenervia in Florida
Both Florida isolates of P. psidii appear similar to one that infects Pimenta spp.
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.
Lethal yellowing‐type diseases of palms associated with phytoplasmas newly identified in Florida, USA
The known geographic range of TPD in the USA is extended to include Florida and the listing of T PD-susceptible palm species to include P. dactylifera, P. sylvestris and S. romanozoffiana is listed.
Natural Epiphytotic of the Rust Puccinia psidii on Melaleuca quin-quenervia in Florida.
Urediniospore morphology and dimensions are consistent with the description of Puccinia psidii, which has been recorded on 11 genera in Myrtaceae in the Americas, including melaleuca, and an epiphytotic of this magnitude onmelaleuca has not been reported.
Extended disease resistance emerging from the faecal nest of a subterranean termite
A non-nutritional exosymbiosis in a termite is described, in the form of a defensive mutualism which has emerged from the use of faecal material in the nesting structure of Coptotermes, which provides an extended disease resistance to the termite group as another level of defence.
Survival, growth and pathogenicity of Gaeumannomyces graminis var. graminis with different methods of long-term storage
There were minimal or no effects on growth and pathogenicity for all strains for all storage treatments with survival, and Colonized agar plugs stored in water at ambient temperature provides an economical storage method that does not need an electrical power for long-term maintenance.
Interaction Between the Subterranean Termite Reticulitermes flavipes (Isoptera: Rhinotermitidae) and the Entomopathogenic Fungus Metarhizium anisopliae in Foraging Arenas
The entomopathogenic fungus Metarhizium anisopliae (Metsch.) Sorokin was tested in the laboratory against field-collected groups of eastern subterranean termite groups in foraging arenas to determine the potential effect of a “trap and treat” protocol.
First Report of Bud Rot Caused by Phytophthora palmivora on African Oil Palm in Colombia.
The presence of Phytophthora in the four Colombian growing areas was confirmed using Agdia immunostrips followed by DNA extraction from the Immunostrip wick and ITS sequencing to confirm the species, and this is the first report of P. palmivora causing PC on oil palm in Colombia.
Cross Pathogenicity of Gaeumannomyces graminis var. graminis from Bermudagrass, St. Augustinegrass, and Rice in Florida and Texas.
Overall, G. graminis was most aggressive on the host from which it was originally isolated, such as rice or St. Augustine, but differences in host-plant reactions were not always statistically significant, especially with bermudagrass.