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11 resultaten
Purification and properties of growth stage-dependent antiviral proteins from the leaves of Celosia cristata.
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Two antiviral glycoproteins, active against mechanical transmission of two tobamoviruses, tobacco mosaic virus and sunnhemp rosette virus, and citrus ring spot virus (ungrouped), were purified from the dried leaves of Celosia cristata. These proteins, called CCP-25 and CCP-27, have M(r) 25 and 27
Purification of a ribosome-inactivating protein with antioxidation and root developer potencies from Celosia plumosa.
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Considering Celosia plumosa as a potent antiviral plant, the attempt was made to determine, purify and characterize its proteinaceous antiviral elements against tobacco mosaic virus hypersensitive response on Nicotiana glutinosa. By using 60% ammonium sulphate-precipitation, FPLC-based
Cloning and expression of small cDNA fragment encoding strong antiviral peptide from Celosia cristata in Escherichia coli.
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A small cDNA fragment containing a ribosome-inactivating site was isolated from the leaf cDNA population of Celosia cristata by polymerase chain reaction (PCR). PCR was conducted linearly using a degenerate primer designed from the partially conserved peptide of ribosome-inactivating/antiviral
Molecular cloning and functional identification of a ribosome inactivating/antiviral protein from leaves of post-flowering stage of Celosia cristata and its expression in E. coli.
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A full-length cDNA clone, encoding a ribosome inactivating/antiviral protein (RIP/AVP) was isolated from the cDNA library of post-flowering stage of Celosia cristata leaves. The full-length cDNA consisted of 1015 nucleotides, with an open reading frame encoding 283 amino acids. The deduced amino
Cystatins may confer viral resistance in plants by inhibition of a virus-induced cell death phenomenon in which cysteine proteinases are active: cloning and molecular characterization of a cDNA encoding cysteine-proteinase inhibitor (celostatin) from Celosia cristata (crested cock's comb).
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Cystatins (cysteine proteinase inhibitors) have been recently used in plants as antiviral strategy against those viruses whose replication involves cysteine proteinase activity. We proposed an idea that cystatins may confer resistance by inhibition of a virus-induced cell-death phenomenon in which
New Experimental Hosts of Tobacco streak virus and Absence of True Seed Transmission in Leguminous Hosts.
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Of 70 plant species tested, 50 species were susceptible to Tobacco streak virus (TSV) on sap inoculation. Both localized (necrotic and chlorotic spots) and systemic (necrotic spots, axillary shoot proliferation, stunting, total necrosis and wilt) symptoms are observed by majority of plant species.
Complementation analysis of triple gene block of Potato virus S (PVS) revealed its capability to support systemic infection and aphid transmissibility of recombinant Potato virus X.
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Triple gene block (TGB) sequences derived from isolates of ordinary Potato virus S (PVS-O) and Chenopodium-systemic (PVS-CS) were analyzed. Although the TGB sequences did not reveal any specific difference within the 7K protein, some specific differences within the 25K and 12K ORFs were found. In
Heterologous expression of stress-responsive DUF538 domain containing protein and its morpho-biochemical consequences.
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As a usual response, plants induce/activate various proteins which are thought to be involved in defense mechanisms against the biotic and abiotic stresses they may be confronted with. The novel DUF538 domain containing proteins with unknown functions have been found to be induced/activated in
Relationships in the Caryophyllales as suggested by phylogenetic analyses of partial chloroplast DNA ORF2280 homolog sequences.
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Phylogenetic relationships within the angiosperm order Caryophyllales were investigated by comparative sequencing of two portions of the highly conserved inverted repeat (totaling some 1100 base pairs) coinciding with the region occupied by ORF2280 in Nicotiana, the largest gene in the plastid
Isolation and characterization of cDNAs encoding ribosome inactivating protein from Dianthus sinensis L.
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To isolate a ribosome inactivating protein (RIP) gene, six plant species were surveyed for antiviral activity. Crude proteins extracted from these plants were tested for the antiviral activity against tobacco mosaic virus (TMV) in Nicotiana glutinosa. All the plants, Spinacia oleracea, Amaranthus
A New Natural Host of Lisianthus necrosis virus in Taiwan.
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Lisianthus necrosis virus (LNV) was first identified as a fungus-borne virus that induced systemic necrosis in lisianthus (Eustoma russellianum) in Japan (2). In Taiwan, LNV causes systemic bright yellow chlorosis followed by necrosis in lisianthus (1). The disease was able to spread through the
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