Rugose wood is one of the most important disease syndromes of grapevine, and it has been associated with at least three viruses: grapevine rupestris stem pitting-associated virus (GRSPaV), grapevine virus A (GVA), and grapevine virus B (GVB). All three viruses show a worldwide distribution pattern, and their genetic composition has been the focus of extensive research in past years. Despite their first record in Greece almost 20 years ago, there is a lack of knowledge on the distribution and genetic variability of their populations in Greek vineyards. In this context, we investigated the distribution of GRSPaV, GVA, and GVB in rootstocks, self-rooted vines, and grafted grapevine cultivars originating from different geographic regions that represent important viticultural areas of Greece. Three new reverse transcription-PCR assays were developed for the reliable detection of GRSPaV, GVA, and GVB. Our results indicated that GVA is the most prevalent in Greek vineyards, followed by GRSPaV and GVB. However, virus incidence differed among self-rooted and grafted grapevine cultivars or rootstocks tested. Selected isolates from each virus were further molecularly characterized to determine their phylogenetic relationships. All three viruses exhibited high nucleotide diversity, which was depicted in the constructed phylogenetic trees. Isolates from Greece were placed in various phylogroups, reinforcing the scenario of multiple introductions of GVA, GVB, and GRSPaV in Greece and highlighting the effect of different transmission modes in the evolutionary course of the three viruses.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1094/PDIS-02-21-0266-RE | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Prevalence and risk factors of under-five mortality due to severe acute malnutrition in Africa: a systematic review and meta-analysis.
Syst Rev
January 2025
Bill and Joyce Cummings Institute of Global Health, University of Global Health Equity (UGHE), Butaro, Rwanda.
Background: Despite a global drop of under-five mortality by 59% between 1990 and 2019, it remains high in Low- and Middle- income Countries (LMICs)with a preponderance in Sub-Saharan Africa (SSA), Southern and Central Asia. Besides preterm and intrapartum complications, undernutrition contributes 45% of the deaths in these developing regions. In Africa, under-five mortality due to severe acute malnutrition (SAM) has stagnated at 10-40%, higher than WHO targets and the SDGs projections.
View Article and Find Full Text PDFInterpretation of indoor air surveillance for respiratory infections: a prospective longitudinal observational study in a childcare setting.
EBioMedicine
January 2025
KU Leuven, Dept. of Microbiology, Immunology and Transplantation, Laboratory of Clinical Microbiology, Herestraat 49, Leuven 3000, Belgium; University Hospitals Leuven, Department of Laboratory Medicine and National Reference Centre for Respiratory Pathogens, Herestraat 49, Leuven 3000, Belgium.
Background: Sampling the air in indoor congregate settings, where respiratory pathogens are ubiquitous, may constitute a valuable yet underutilised data source for community-wide surveillance of respiratory infections. However, there is a lack of research comparing air sampling and individual sampling of attendees. Therefore, it remains unclear how air sampling results should be interpreted for the purpose of surveillance.
View Article and Find Full Text PDF"Nobody Seemed to Notice My Work": The Lived Experiences of Home Care Workers Assisting People With Chronic Diseases: A Phenomenological Study.
J Prim Care Community Health
January 2025
University of Rome Tor Vergata, Roma, Lazio, Italy.
Introduction: Home care workers (HCWs) are paid caregivers who provide support to patients with chronic conditions and functional limitations. Additionally, they provide emotional support to patients and familial support. Although several qualitative studies have been conducted on HCWs, they focused more on studying prevalently the lived experiences about the workplace violence, the end of life, stressor and resilience, during the COVID-19 pandemic or focused more in dementia and heart failure, but not on feelings and working conditions.
View Article and Find Full Text PDFCryo-EM structure of AAV2 Rep68 bound to integration site AAVS1: insights into the mechanism of DNA melting.
Nucleic Acids Res
January 2025
Department of Physiology and Biophysics, Virginia Commonwealth University, School of Medicine, Richmond, VA 23298, United States.
The Rep68 protein from Adeno-Associated Virus (AAV) is a multifunctional SF3 helicase that performs most of the DNA transactions necessary for the viral life cycle. During AAV DNA replication, Rep68 assembles at the origin of replication, catalyzing the DNA melting and nicking reactions during the hairpin rolling replication process to complete the second-strand synthesis of the AAV genome. We report the cryo-electron microscopy structures of Rep68 bound to the adeno-associated virus integration site 1 in different nucleotide-bound states.
View Article and Find Full Text PDFDysregulation of lung epithelial cell homeostasis and immunity contributes to Middle East respiratory syndrome coronavirus disease severity.
mSphere
January 2025
Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
Coronaviruses (CoV) emerge suddenly from animal reservoirs to cause novel diseases in new hosts. Discovered in 2012, the Middle East respiratory syndrome coronavirus (MERS-CoV) is endemic in camels in the Middle East and is continually causing local outbreaks and epidemics. While all three newly emerging human CoVs from the past 20 years (SARS-CoV, SARS-CoV-2, and MERS-CoV) cause respiratory disease, each CoV has unique host interactions that drive differential pathogeneses.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!