Flavivirids are small, enveloped, positive-sense RNA viruses from the family with genomes of ~9-13 kb. Metatranscriptomic analyses of metazoan organisms have revealed a diversity of flavivirus-like or flavivirid viral sequences in fish and marine invertebrate groups. However, no flavivirus-like virus has been identified in amphibians.
View Article and Find Full Text PDFMorbilliviruses are negative-sense single-stranded monosegmented RNA viruses in the family (order ). Morbilliviruses infect diverse mammals including humans, dogs, cats, small ruminants, seals, and cetaceans, which serve as natural hosts. Here, I report the identification and characterization of novel viruses detected in public RNAseq datasets of South American long-haired and olive field mice.
View Article and Find Full Text PDFMitoviruses (family Mitoviridae) are small capsid-less RNA viruses that replicate in the mitochondria of fungi and plants. However, to date, the only authentic animal mitovirus infecting an insect was identified as Lutzomyia longipalpis mitovirus 1 (LulMV1). Public databases of transcriptomic studies from several animals may be a good source for identifying the often missed mitoviruses.
View Article and Find Full Text PDFMycoviruses appear to be widespread in species worldwide. The aim of this work was to identify mycoviral infections in spp., isolated from maize and sorghum grown in Argentina, and to estimate their potential effects on the pathogenicity and toxigenesis of the host fungus towards maize.
View Article and Find Full Text PDFThe order is a diverse group of (+)RNA viruses, classified together based on their common genome organisation and conserved replicative enzymes, despite drastic differences in size and complexity. One such difference pertains to the mechanisms and enzymes responsible for generation of the proposed viral 5' RNA cap. Within the family, two separate methytransferases (MTase), nsp14 and nsp16, perform the RNA-cap N7-guanine and 2'-OH methylation respectively for generation of the proposed m7GpppNm type I cap structure.
View Article and Find Full Text PDFBackground: The horn fly (Haematobia irritans) is an obligate blood feeder that causes considerable economic losses in livestock industries worldwide. The control of this cattle pest is mainly based on insecticides; unfortunately, in many regions, horn flies have developed resistance. Vaccines or biological control have been proposed as alternative control methods, but the available information about the biology or physiology of this parasite is rather scarce.
View Article and Find Full Text PDFFungi constituting the species complex (members of subphylum , phylum ) commonly kill their insect hosts and manipulate host behaviors in the process. In this study, we made use of public transcriptome data to identify and characterize eight new species of mitoviruses associated with several different isolates. Mitoviruses are simple RNA viruses that replicate in host mitochondria and are frequently found in more phylogenetically apical fungi (members of subphylum , phylum , phylum and phylum ) as well as in plants.
View Article and Find Full Text PDFViruses of the family Hepadnaviridae are characterized by partially dsDNA circular genomes of approximately 3.2 kb, which are reverse transcribed from RNA intermediates. Hepadnaviruses have a broad host range, which includes humans (hepatitis B virus), other mammals (genus Orthohepadnavirus), and birds (genus Avihepadnavirus).
View Article and Find Full Text PDFHere, we report the identification and characterization of two novel viruses associated with bird's-foot trefoil. Virus sequences related to those of enamoviruses (ssRNA (+); Luteoviridae; Enamovirus) and nucleorhabdoviruses (ssRNA (-); Rhabdoviridae; Nucleorhabdovirus) were detected in Lotus corniculatus transcriptome data. The genome of the tentatively named "bird's-foot trefoil-associated virus 1" (BFTV-1) is a 13,626-nt-long negative-sense ssRNA.
View Article and Find Full Text PDFPeer-reviewed journal publication is the main means for academic researchers in the life sciences to create a permanent public record of their work. These publications are also the de facto currency for career progress, with a strong link between journal brand recognition and perceived value. The current peer-review process can lead to long delays between submission and publication, with cycles of rejection, revision, and resubmission causing redundant peer review.
View Article and Find Full Text PDFMicrobiol Resour Announc
October 2018
Here, we report the draft genome sequence of a divergent strain of Culex pipiens-associated Tunisia virus (CpATV) identified in the malaria vector Anopheles epiroticus (CpATV-AnE). CpATV-AnE expands the reference virus sequence, introducing an extended replicase with novel virga-like domains. Our results suggest that the host range of CpATV includes Anopheles sp.
View Article and Find Full Text PDFFireflies and their luminous courtships have inspired centuries of scientific study. Today firefly luciferase is widely used in biotechnology, but the evolutionary origin of bioluminescence within beetles remains unclear. To shed light on this long-standing question, we sequenced the genomes of two firefly species that diverged over 100 million-years-ago: the North American and Japanese To compare bioluminescent origins, we also sequenced the genome of a related click beetle, the Caribbean , with bioluminescent biochemistry near-identical to fireflies, but anatomically unique light organs, suggesting the intriguing hypothesis of parallel gains of bioluminescence.
View Article and Find Full Text PDFThis contribution contains data associated to the research article entitled "Exploring the genes of yerba mate ( A. St.-Hil.
View Article and Find Full Text PDFBecause so few viruses in the family Barnaviridae have been reported, we searched for more of them in public sequence databases. Here, we report the complete coding sequence of Colobanthus quitensis associated barnavirus 1, mined from a transcriptome of the Antarctic pearlwort Colobanthus quitensis. The 4.
View Article and Find Full Text PDFMacrophomina phaseolina is a soil-borne fungal pathogen with a wide host range that causes charcoal rot in soybean [Glycine max (L.) Merr.].
View Article and Find Full Text PDFMitoviruses have small RNA(+) genomes, replicate in mitochondria, and have been shown to infect only fungi to date. For this report, sequences that appear to represent nearly complete plant mitovirus genomes were recovered from publicly available transcriptome data. Twenty of the refined sequences, 2684-2898 nt long and derived from 10 different species of land plants, appear to encompass the complete coding regions of contemporary plant mitoviruses, which furthermore constitute a monophyletic cluster within genus Mitovirus.
View Article and Find Full Text PDFThe golden orb-weaver spider , known for its sexual size dimorphism, is abundant and widespread in the New World. The first annotated genome of orb-weaver spiders, exploring , has recently been reported. The study, focused primarily on the diversity of silk specific genes, shed light into the complex evolutionary history of spiders.
View Article and Find Full Text PDFThis contribution contains data related to the research article entitled "The 18S-25S ribosomal RNA unit of yerba mate ( A. St.-Hil.
View Article and Find Full Text PDFWe present here the physical mapping of the 5S rDNA locus in six wild and five cultivated taxa of Capsicum by means of a genus-specific FISH probe. In all taxa, a single 5S locus per haploid genome that persistently mapped onto the short arm of a unique metacentric chromosome pair at intercalar position, was found. 5S FISH signals of almost the same size and brightness intensity were observed in all the analyzed taxa.
View Article and Find Full Text PDFSmall RNAs (sRNAs) play important roles in plant development and host-pathogen interactions. Several studies have highlighted the relationship between viral infections, endogenous sRNA accumulation and transcriptional changes associated with symptoms. However, few studies have described a global analysis of endogenous sRNAs by comparing related viruses at early stages of infection, especially before viral accumulation reaches systemic tissues.
View Article and Find Full Text PDFWe present the first report of a virus infecting the subtropical tree crop yerba mate (Ilex paraguariensis St. Hil.).
View Article and Find Full Text PDFLosses produced by virus diseases depend mostly on symptom severity. Turnip mosaic virus (TuMV) is one of the most damaging and widespread potyvirus infecting members of the family Brassicaceae, including Arabidopsis thaliana. We used JPN1 and UK1 TuMV strains to characterize viral infections regarding symptom development, senescence progression, antioxidant response, reactive oxygen species (ROS) accumulation, and transcriptional profiling.
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