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sambucus chinensis/nicotina
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10 resultados
A complex fruit-specific type-2 ribosome-inactivating protein from elderberry (Sambucus nigra) is correctly processed and assembled in transgenic tobacco plants.
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Fruits of elderberry (Sambucus nigra) express small quantities of a type-2 ribosome-inactivating protein with an exclusive specificity towards the NeuAc(alpha2,6)Gal/GalNAc disaccharide and a unique molecular structure typified by the occurrence of a disulfide bridge between the B-chains of two
The Sambucus nigra type-2 ribosome-inactivating protein SNA-I' exhibits in planta antiviral activity in transgenic tobacco.
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Transgenic tobacco (Samsun NN) plants transformed with a cDNA clone encoding SNA-I' from Sambucus nigra synthesize, and correctly process and assemble, a fully active type-2 ribosome-inactivating protein. Expression of SNA-I' under the control of the 35S cauliflower mosaic virus promoter enhances
Expression of Sambucus nigra agglutinin (SNA-I') from elderberry bark in transgenic tobacco plants results in enhanced resistance to different insect species.
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Tobacco plants (Nicotiana tabacum cv Samsun NN) have been transformed with the gene encoding the type-2 ribosome-inactivating protein (RIP) SNA-I' from elderberry (Sambucus nigra) under the control of the Cauliflower Mosaic Virus 35S promoter. Previous research confirmed that these plants
Carbohydrate-binding activity of the type-2 ribosome-inactivating protein SNA-I from elderberry (Sambucus nigra) is a determining factor for its insecticidal activity.
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In recent years, different classes of proteins have been reported to promote toxic effects when ingested. Type-2 ribosome-inactivating proteins (RIPs) are a group of chimeric proteins built up of an A-chain with RNA N-glycosidase activity and a B-chain with lectin activity. These proteins are
Behavior ofHeliothis virescens (F.) in presence of oviposition deterrents from elderberry.
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Extracts prepared from elderberry,Sambucus simpsonii Rehd., leaves with either acetone, dichloromethane, distilled water, ethanol, hexane, or methanol deterred oviposition byHeliothis virescens (F.) on treated substrates in the laboratory. Doses of the aqueous extract equivalent to as little as 0.8
Analysis of the in planta antiviral activity of elderberry ribosome-inactivating proteins.
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Although the type-2 ribosome-inactivating proteins (SNA-I, SNA-V, SNLRP) from elderberry (Sambucus nigra L.) are all devoid of rRNA N-glycosylase activity towards plant ribosomes, some of them clearly show polynucleotide-adenosine glycosylase activity towards tobacco mosaic virus RNA. This
Mutational analysis of the carbohydrate-binding activity of the NeuAc(alpha-2,6)Gal/GalNAc-specific type 2 ribosome-inactivating protein from elderberry (Sambucus nigra) fruits.
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Sambucus nigra agglutinin I (SNA-I) is a type 2 ribosome-inactivating protein. Site-directed mutagenesis was used to mimic the conversion of the highly active B-chain of fruit-specific SNA (SNA-If) into the completely inactive B-chain of the closely related and naturally occurring loss-of-activity
Effect of oviposition deterrents from elderberry on behavioral responses byHeliothis virescens to host-plant volatiles in flight tunnel.
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In flight-tunnel assays, mated femaleHeliothis virescens (F.) moths responded by positive anemotaxis to volatiles from extracts of two host plants (cotton and tobacco), but they did not fly to an extract from elderberry (Sambucus simpsonii Rehd.), a nonhost that contains an oviposition deterrent
Accumulation of plant small heat-stress proteins in storage organs.
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Plant small heat-stress proteins (sHSPs) have been shown to be expressed not only after exposure to elevated temperatures, but also at particular developmental stages such as embryogenesis, microsporogenesis, and fruit maturation. This paper presents new data on the occurrence of sHSPs in vegetative
Three New Pierce's Disease Pathogenicity Effectors Identified Using Xylella fastidiosa Biocontrol Strain EB92-1.
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Xylella fastidiosa (X. fastidiosa) infects a wide range of plant hosts and causes economically serious diseases, including Pierce's Disease (PD) of grapevines. X. fastidiosa biocontrol strain EB92-1 was isolated from elderberry and is infectious and persistent in grapevines but causes only very
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