نتایج جستجو برای: geminiviruses
تعداد نتایج: 292 فیلتر نتایج به سال:
The family Geminiviridae comprises seven genera differentiated by genome organization, sequence similarity, and insect vector. Capulavirus, an eighth genus, has been proposed to accommodate two newly discovered highly divergent geminiviruses that presently have no known vector. Alfalfa leaf curl virus, identified here as a third capulavirus, is shown to be transmitted by Aphis craccivora. This ...
Molecular Virology Laboratory, School of Life Sciences, Jawaharlal Nehru University, New Delhi – 110067, India E-mail: [email protected] 1 The detection and identification of viruses has been a challenge since the advent of the discipline of plant virology over a century ago. A great variety of methods have been developed that permit differentiation of viral pathogens. These methods, i...
Abstract Geminiviruses are causal agents of devastating diseases in crops. have circular single-stranded (ss) DNA genomes that replicated the nucleus infected plant cell through double-stranded (ds) intermediates by replication machinery. Which host polymerase mediates geminiviral multiplication, however, has so far remained elusive. Here, we show subunits nuclear replicative polymerases ? and ...
UNLABELLED Arabidopsis encodes five double-stranded RNA binding (DRB) proteins. DRB1 and DRB2 are involved in microRNA (miRNA) biogenesis, while DRB4 functions in cytoplasmic posttranscriptional small interfering RNA (siRNA) pathways. DRB3 and DRB5 are not involved in double-stranded RNA (dsRNA) processing but assist in silencing transcripts targeted by DRB2-associated miRNAs. The goal of this ...
The CRISPR/Cas9 system is an efficient genome-editing platform for diverse eukaryotic species, including plants. Recent work harnessed CRISPR/Cas9 technology to engineer resistance to geminiviruses. Here, we discuss opportunities, emerging developments, and potential pitfalls for using this technology to engineer resistance against single and multiple geminivirus infections in plants.
Diseases caused by geminiviruses have long been recognized as a limitation to the cultivation of several important crops, including maize, cassava, bean, squash, cucurbits, and tomato, in tropical and subtropical regions of the world. More recently, geminivirus diseases, particularly those transmitted by whiteflies, have become an even greater threat to agriculture due to the appearance of a ne...
Plant viruses that are members of the Geminiviridae family have circular single-stranded DNA (ssDNA) genome and are responsible for major crop diseases worldwide. We have identified and characterized a novel monopartite geminivirus infecting tomato in Argentina. The full-length genome was cloned and sequenced. The genome-wide pairwise identity calculation that resulted in a maximum of 63% ident...
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