Here, we describe for the first time the complete genome sequence of a new bipartite begomovirus in Madagascar isolated from the weed Asystasia gangetica (Acanthaceae), for which we propose the tentative name asystasia mosaic Madagascar virus (AMMGV). DNA-A and -B nucleotide sequences of AMMGV were only distantly related to known begomovirus sequence and shared highest nucleotide sequence identity of 72.9 % (DNA-A) and 66.9 % (DNA-B) with a recently described bipartite begomovirus infecting Asystasia sp. in West Africa. Phylogenetic analysis demonstrated that this novel virus from Madagascar belongs to a new lineage of Old World bipartite begomoviruses.
Download full-text PDF |
Source |
---|---|
http://dx.doi.org/10.1007/s00705-015-2413-3 | DOI Listing |
Theor Appl Genet
January 2025
Plant Breeding, Wageningen University and Research, Wageningen, The Netherlands.
The tomato Ty-6 gene conferring resistance against begomoviruses has been cloned and shown to be a variant of DNA polymerase delta subunit 1. Ty-6 is a major resistance gene of tomato that provides resistance against monopartite and bipartite begomoviruses. The locus was previously mapped on chromosome 10, and in this study, we fine-mapped Ty-6 to a region of 47 kb, including four annotated candidate genes.
View Article and Find Full Text PDFCell Mol Biol (Noisy-le-grand)
November 2024
Plant Protection Department, College of Food and Agriculture Sciences, King Saud University, P.O. Box 2460, Riyadh, 11451, Saudi Arabia.
During the field visits in growing season of 2022 in Dammam Region of Saudi Arabia, begomovirus-like symptoms including leaf curling, leaf cupping, leaf distortion, vein thickening and reduced leaf size were observed in squash and cucumber fields. Twenty-five samples were collected from each crop and PCR amplification was done using general diagnostic begomovirus primers (AC-1048/AV-494 and Begomo I/Begomo II). The obtained results showed desired sized amplified DNA fragments (550 bp and 1.
View Article and Find Full Text PDFFront Microbiol
November 2024
Advanced Centre for Plant Virology, Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi, India.
(tomato leaf curl New Delhi virus, ToLCNDV), is member of the genus , family , is a prolific bipartite whitefly transmitted begomovirus in the Indian sub-continent has a wide host range, including solanaceous, cucurbitaceous and other plants. Recently, dsRNA-mediated non-transgenic approaches have been promising in managing plant viruses. Such an approach could be effective if the pathogenicity determinants of a virus are targeted.
View Article and Find Full Text PDFArch Virol
December 2024
Division of Crop Protection, ICAR-Indian Institute of Pulses Research, Kanpur, 208024, India.
In India, plants from the non-cultivated, horticultural, and agricultural categories are commonly infected with various begomoviruses, most of which produce yellow mosaic, bright yellow mosaic, or curling symptoms on leaves. In this study, the complete genome of a new bipartite begomovirus causing yellow mosaic disease (YMD) in butterfly pea (Clitoria ternatea L.) was characterized using rolling-circle amplification followed by restriction digestion, cloning, and sequencing to obtain the full-length DNA-A (2727 nt) and DNA-B (2648 nt) sequences.
View Article and Find Full Text PDFViruses
November 2024
Department of Plant Pathology, University of Brasília (UnB), Brasília 70910-900, DF, Brazil.
Sida mottle virus (SiMoV) and Sida micrantha mosaic virus (SiMMV) are major Brazilian begomoviruses (). However, the range of DNA-A identity of isolates of these viruses (81-100%) is not in agreement with the current criteria for species demarcation (<91%). To clarify this putative classification problem, we performed a comprehensive set of molecular analyses with all 53 publicly available isolates (with complete DNA-A genomes) designated as either SiMoV or SiMMV (including novel isolates obtained herein from nationwide metagenomics-based studies).
View Article and Find Full Text PDFEnter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!