crotalaria juncea/nikotin

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Heterologous sequences greatly affect foreign gene expression in tobacco mosaic virus-based vectors.

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A series of tobacco mosaic virus (TMV)-based hybrid vectors for transient gene expression were constructed with similar designs but differing in the source of heterologous tobamovirus sequence: Odontoglossum ringspot virus, tobacco mild green mosaic virus variants U2 and U5, tomato mosaic virus, and

Studies of coat protein-mediated resistance to tobacco mosaic virus (TMV). II. Challenge by a mutant with altered virion surface does not overcome resistance conferred by TMV coat protein.

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Transgenic tobacco plants expressing the coat protein (CP) gene of the U1 strain of tobacco mosaic virus (TMV) exhibit CP-mediated resistance (CP-MR) against some, but not all, tobamoviruses. To investigate the role of the amino acid sequences on the surface of the challenge virus in CP-MR, mutant

A tobamovirus expression vector for agroinfection of legumes and Nicotiana.

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The highest recombinant protein expression levels in plants have been achieved using tobacco mosaic virus (TMV) vectors via agroinoculation of the tobacco, Nicotiana benthamiana. These vectors have been utilized for pharmaceutical protein production and also can serve as rapid gene expression

Tobacco rattle virus (TRV)-Mediated Silencing of Nicotiana benthamiana ARGONAUTES (NbAGOs) Reveals New Antiviral Candidates and Dominant Effects of TRV-NbAGO1.

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The objective of this study was to determine the contribution of different ARGONAUTE proteins in Nicotiana benthamiana (NbAGOs) to the defense against silencing sensitive GFP-expressing viral constructs based on Tomato bushy stunt virus (TBSV) (Tombusvirus), Sunn-hemp mosaic virus (Tobamovirus), and

Second-site reversion of a dysfunctional mutation in a conserved region of the tobacco mosaic tobamovirus movement protein.

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The N-terminal two-thirds of tobamovirus movement proteins (MPs) contain two well conserved regions. Within region I (amino acids 56-96) is an area predicted by computer analysis to have loop secondary structure (amino acids 76-87). A single or two double amino acid mutations were introduced into

A natural variant of a host RNA-dependent RNA polymerase is associated with increased susceptibility to viruses by Nicotiana benthamiana.

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Nicotiana benthamiana often displays more intense symptoms after infection by RNA viruses than do other Nicotiana species. Here, we examined the role of RNA-dependent RNA polymerases (RdRPs) in N. benthamiana antiviral defense. cDNAs representing only two genes encoding RdRPs were identified in N.

Study of betasatellite molecule from leaf curl disease of sunn hemp (Crotalaria juncea) in India.

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Leaves of sunn hemp (Crotalaria juncea) showing geminiviral symptoms were collected from Lucknow, India during rainy season in 2008. DNA template isolated from the symptomatic leaf tissues were subjected to polymerase chain reaction (PCR) using specific primers to amplify coat protein (CP) gene of

A virus inhibitory protein isolated from Cyamopsis tetragonoloba (L.) Taub. upon induction of systemic antiviral resistance shares partial amino acid sequence homology with a lectin.

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CONCLUSIONS Two virus inhibitory proteins were purified from Cyamopsis tetragonoloba , induced to resist virus infections by CIP-29, a systemic resistance inducing protein from Clerodendrum inerme, and characterized. One of them shared homology with a lectin. CIP-29, a known 29 kDa systemic

The complete nucleotide sequence and genome organization of odontoglossum ringspot tobamovirus RNA.

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The complete nucleotide sequence of the genomic RNA of odontoglossum ringspot tobamovirus (ORSV) was determined. The RNA genome of ORSV is 6618 nucleotides long and contains five open reading frames (ORFs 1 to 5) coding for proteins of M(r) 126 K, 181 K, 34 K, 18 K and 52 K, respectively. This is

Interaction between the New World begomovirus Euphorbia yellow mosaic virus and its associated alphasatellite: effects on infection and transmission by the whitefly Bemisia tabaci.

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The majority of Old World monopartite begomoviruses (family Geminiviridae) are associated with satellite DNAs. Alphasatellites are capable of autonomous replication, but depend on the helper virus for movement, encapsidation and transmission by the insect vector. Recently, Euphorbia yellow mosaic

Influence of heterologous tobamovirus movement protein and chimeric-movement protein genes on cell-to-cell and long-distance movement.

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Sunn-hemp mosaic tobamovirus (SHMV) moves slowly from cell to cell in Nicotiana tabacum cv. Xanthi, but fails to move long distance. To determine the role of the SHMV movement protein (MP) in cell-to-cell and long-distance movement in tobacco, the SHMV MP gene was inserted into a TMV-cDNA clone that

A classification of the tobamoviruses based on comparisons among their 126K proteins.

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The products of partial proteolysis of the Mr 126,000 in vitro translation products of the RNA of eight tobamoviruses were separated by SDS-polyacrylamide gel electrophoresis. The peptide patterns obtained were compared using a computer program designed to establish phylogenetic relationships. The

Cotranslational disassembly of a cowpea strain (Cc) of TMV: evidence that viral RNA-protein interactions at the assembly origin block ribosome translocation in vitro.

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Cotranslational disassembly of mixed rod-length populations of tobacco mosaic virus (TMV; vulgare, common or, U1 strain), reveals a reproducible, significant reduction in the level of expression of the intermediate-sized, subgenomic 12-RNA when compared with conventional total viral RNA

Symbiosis-promoting and deleterious effects of NopT, a novel type 3 effector of Rhizobium sp. strain NGR234.

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Establishment of symbiosis between certain host plants and nitrogen-fixing bacteria ("rhizobia") depends on type 3 effector proteins secreted via the bacterial type 3 secretion system (T3SS). Here, we report that the open reading frame y4zC of strain NGR234 encodes a novel rhizobial type 3 effector,

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