An RNA-dependent polymerase associated with rice gall dwarf virus (RGDV), a new Phytoreovirus, was characterized. Opt imum polymerase activity was found between pH 8.0 and 8.5 at 25 °C. Mg 2+ was essential for the activity, the opt imum concentration being 2 mM. Mn 2 + could replace Mg 2 +. The R N A products synthesized in vitro hybridized with R G D V RNA, but not with R N A of rice dwarf vir...

INTRODUCTION ................ ................................ 483 DISCOVERY OF REOVIRUSES .............................................. 483 STRUCTURE OF THE REOVIRUS PARTICLE .................. ............. 484 REOVIRUS GENOME ................................................ 484 PROTEINS OF REOVIRUS ................................................ 486 INFORMATION CONTENT OF THE 10 REOVIRUS G...

Feline Viral Upper Respiratory Tract Disease Feline viral upper respiratory tract disease is typified by signs of rhinosinusitis, conjunctivitis, lacrimation, salivation, and/or oral ulcerations. The principal causative agents are feline herpesvirus type 1 (FHV-1 ) and feline calicivirus (FCV). These viruses are host-specific and pose no known human risk. Other infectious agents (e.g. Bordetell...

Reoviruses are known to contain double-stranded (DS) RNA.' It was therefore surprising to find that RNA extracted from highly purified reovirus type 3 and analyzed without further fractionation had a purine/pyrimidine ratio of 1.5 and an adenylic acid content of more than 40 moles per cent. In an effort to understand the basis for this observation, the RNA's of all three reovirus serotypes were...

background:avian reoviruses (arvs) are members of theorthoreovirus genus; one of the 12 genera of the reoviridaefamily. the arvs are the cause of some important diseases inpoultry such as reovirus-induced arthritis, tenosynovitis,chronic respiratory disease, and mal-absorption syndrome.objectives: in this study, the presence of arvs in the iranianbreeder flocks was investigated through reverse ...

Mycoplasma gallisepticum and Mycoplasma synoviae are the causative agents of avian mycoplasmosis in commercial poultry. Among the available tools, polymerase chain reaction (PCR) and culture are confirmatory tools for the diagnosis of mycoplasmosis after the initial serological screening of suspected birds. Overall, 181 samples were analyzed, 152 (84%) and 103 (57%) of which were found positive...

Fernández-Gómez, L., A. Cortés-Avizanda, P. Tiago, F. Byrne, and J. Antonio Donázar. 2022. Food subsidies shape age structure in a top avian scavenger. Avian Conservation Ecology 17(1):23. https://doi.org/10.5751/ACE-02104-170123