Ervin Balâzs

Learn More
Cucumber mosaic virus (CMV) and tomato aspermy virus (TAV) are closely related cucumoviruses. We have made pseudorecombinant viruses in which the RNAs 3 of these two viruses have been exchanged and recombinant viruses containing chimeric RNA 3 molecules, in which the coat proteins and the 3'-end regions of CMV and TAV have been exchanged, giving rise to(More)
Four RNA transcripts encoded by cauliflower mosaic virus DNA have been detected in the polyadenylated RNA from virus-infected turnip leaves. Two of these transcripts, the major 35S and the 8S species, have the same 5' termini, at nucleotide 7435. A viral DNA fragment encompassing this region directs transcription initiation at this point in vitro. The 5'(More)
The complete nucleotide sequence of carnation mottle genomic RNA (4003 nucleotides) is presented. The sequence was determined for cloned cDNA copies of viral RNA containing over 99% of the sequence and was completed by direct sequence analysis of RNA and cDNA transcripts. The sequence contains two long open reading frames which together can account for(More)
A sequence of 9703 nucleotides (nt) is reported for the genomic RNA of potato virus Y (Hungarian isolate, PVY-H), which causes necrotic rings around the buds on the tubers and mottling of leaves. The sequence contains one large open reading frame of 3061 amino acids (aa), a noncoding region of 189 nt at the 5' end and a 330-nt 3' nontranslated region. The(More)
A simple transformation procedure with a positive selection scheme using the expression of the isopentenyl transferase (ipt) gene of transfer DNA (T-DNA) 'shooter' mutants of Agrobacterium tumefaciens was elaborated. After comparing several 'shooter' mutants we found that particular strains frequently produced phenotypically normal shoots after(More)
When expressed in transgenic tobacco plants, transgene mRNA that includes the 3' untranslated region (3' UTR) of Lettuce mosaic virus served as template for synthesis of complementary (-)-strand RNA following an infection by Tobacco etch virus, Tobacco vein mottle virus or Pepper mottle virus, but not when infected with Cucumber mosaic virus. Deletion of(More)
Salicylic acid (SA), which is known as a signal molecule in the induction of defense mechanisms in plants, could be a promising compound for the reduction of stress sensitivity. The aim of the present work was to investigate the distribution of SA in young pea (Pisum sativum L.) seedlings grown from seeds soaked in (3)H-labeled SA solution before sowing,(More)
The complete nucleotide (nt) sequence of peanut stunt virus Robinia strain (PSV-Rp) was determined and compared to other PSV strains and to representatives of the genus Cucumovirus. Nt sequence comparison showed 74.1–84.6% identity with the known PSV strains. Phylogenetic analysis revealed the different origin of the two genes encoded by RNA3. While the 3a(More)
Research related to crop domestication has been transformed by technologies and discoveries in the genome sciences as well as information-related sciences that are providing new tools for bioinformatics and systems' biology. Rapid progress in archaeobotany and ethnobotany are also contributing new knowledge to understanding crop domestication. This sense of(More)
The double-stranded DNA from the isolate D/H with an altered virulence of the cauliflower mosaic virus (CaMV) contains 8016 bp. The DNA is circular and possesses, like the DNA of most CaMV strains, three sequence interruptions. The comparison of its sequence with the previously published sequences of two other CaMV strains (Cabb-S and CM 1841) leads to the(More)