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Advances in understanding begomovirus satellites.
- Xueping Zhou
- BiologyAnnual review of phytopathology
- 5 August 2013
Applications of current molecular tools are facilitating viral diagnosis and the discovery of novel species of geminiviruses and satelliteDNAs and are also advancing the understanding of the global diversity and evolution of satellite DNAs.
Formation of Complexes at Plasmodesmata for Potyvirus Intercellular Movement Is Mediated by the Viral Protein P3N-PIPO
It is demonstrated that plasmodesmatal localization of CI in N. benthamiana leaf cells is modulated by the recently discovered potyviral protein, P3n-PIPO, in a CI:P3N-PipO ratio-dependent manner, and it is shown that P3N is a PD-located protein that physically interacts with CI in planta.
Role of a novel type of double infection in the geminivirus‐induced epidemic of severe cassava mosaic in Uganda
The evidence indicates that UgV is probably of relatively recent origin, that such variants do not appear often, and that the current epidemic has resulted from the rapid spread of UgV to infect plants and to invade regions in which ACMV already occurred.
Vector-Virus Mutualism Accelerates Population Increase of an Invasive Whitefly
The indirect mutualism between the B biotype whitefly and these viruses via their host plants, and the apparent lack of such mutualism for the indigenous whitefly, may contribute to the ability of the B whitefly biotype to invade, the displacement of indigenous whiteflies, andThe disease pandemics of the viruses associated with this vector.
Cytoplasmic assembly and selective nuclear import of Arabidopsis Argonaute4/siRNA complexes.
Suppression of Methylation-Mediated Transcriptional Gene Silencing by βC1-SAHH Protein Interaction during Geminivirus-Betasatellite Infection
Evidence is presented that suppression of methylation-mediated TGS by the sole betasatellite-encoded protein, βC1, is crucial to the association of Tomato yellow leaf curl China virus ( TYLCCNV) with its betas Satellite (TYLCCNB).
A Begomovirus DNAβ-Encoded Protein Binds DNA, Functions as a Suppressor of RNA Silencing, and Targets the Cell Nucleus
In vitro DNA binding activity of the βC1 proteins of Y10β and DNAβ found in the Tobacco curly shoot virus Y35 isolate (TbCSV-Y35) were studied following their expression as six-His fusion proteins in Escherichia coli to suggest nuclear localization of theβC1 protein is a key requirement for symptom induction and silencing suppression.
Genetic Structure and Population Variability of Tomato Yellow Leaf Curl China Virus
Investigating variations accumulating in Tomato yellow leaf curl China virus (TYLCCNV), a geminivirus in the genus Begomovirus of the family Geminiviridae, demonstrated that the population in a naturally infected tomato plant was genetically heterogeneous and rapid mutation occurred in the populations amplified from N. benthamiana and tomato plants that had been infected with cloned DNA.
Identification of a Movement Protein of the Tenuivirus Rice Stripe Virus
It is demonstrated that NSvc4, encoded by RSV RNA4, supports the intercellular trafficking of a movement-deficient Potato virus X in Nicotiana benthamiana leaves and it is determined that upon biolistic bombardment or agroinfiltration, NSVC4:enhanced green fluorescent protein (eGFP) fusion proteins localize predominantly near or within the walls of onion and tobacco epidermal cells.
A DNAβ Associated with Tomato Yellow Leaf Curl China Virus Is Required for Symptom Induction
It is found that TYLCCNV-Y10 alone could systemically infect these plants, but no symptoms were induced, and expression of a βC1 gene is adequate for induction of symptoms of viral infection in the absence of virus.