Cucumber mosaic virus (CMV) bitki virüs hastalıkları arasında muhtemelen en fazla konukçu genişliğine sahip bir türdür. CMV enfeksiyonu Türkiye’de birçok farklı türünde tespit edilmiştir. Etmenin Türkiye’deki genişliği oldukça yaygın olmasına rağmen, Türkiye tütün üretim alanlarının çok büyük kısmını oluşturan Marmara ve Ege bölgeleri alanlarındaki Türk izolatlarının populasyon yapıları ile ilg...

Virus-resistant transgenic plants have been created primarily through the expression of viral sequences. It has been hypothesized that recombination between the viral transgene mRNA and the RNA of an infecting virus could generate novel viruses. As mRNA/viral RNA recombination can occur in virus-resistant transgenic plants, the key to testing this risk hypothesis is to compare the populations o...

Over 200 diseases with different etiologies have been determined in dry beans and green beans. However, viral seem to cause the greatest economic da-mage legume production most parts of world. Dry can be infected by 44 viruses including Bean common mosaic virus (BCMV), necrosis (BCMNV), yellow (BYMV) Cucumber (CMV). Transmission through seeds and/or spread aphids non-persistent manner play impo...

Expression or introduction of double-stranded (ds)RNA in eukaryotic cells can trigger sequence-specific gene silencing of transgenes, endogenes, and viruses. Transgenic plants producing dsRNAs with homology to viral sequences are likely to exhibit pathogen-derived resistance to the virus. Cucumber mosaic virus (CMV), a very widespread virus with over 1,000 host species, has the natural ability ...

Satellite RNAs (satRNA) associated with Cucumber mosaic virus (CMV) have been shown to generate multimers during replication. We have discovered that multimers of a CMV satRNA generated in the absence of its helper virus (HV) are characterized by the addition of a hepta nucleotide motif (HNM) at the monomer junctions. Here, we evaluated the functional significance of HNM in HV-dependent replica...

Transgenic tobacco plants (V123 plants) expressing a set of full-length brome mosaic virus (BMV) genomic RNAs from the cauliflower mosaic virus 35S promoter were produced. The accumulation level of BMV RNAs in V123 plant cells was approximately 1% of that in nontransgenic tobacco protoplasts inoculated with BMV RNAs. The level of BMV RNA in V123 protoplasts did not increase after inoculating th...

We monitored pollen-mediated transgene dissemination from commercial transgenic squash CZW-3 into its wild relative Cucurbita pepo ssp. ovifera var. texana (C. texana). Transgenic squash CZW-3 expresses the neomycin phosphotransferase II (nptII) gene and the coat protein (CP) genes of Cucumber mosaic virus (CMV), Zucchini yellow mosaic virus (ZYMV), and Watermelon mosaic virus (WMV); thereby, i...

RNA silencing in plants is a natural defense system against foreign genetic elements including viruses. This natural antiviral mechanism has been adopted to develop virus-resistant plants through expression of virus-derived double-stranded RNAs or hairpin RNAs, which in turn are processed into small interfering RNAs (siRNAs) by the host's RNA silencing machinery. While these virus-specific siRN...