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Biophysical characterization of a designed TMV coat protein mutant, R46G, that elicits a moderate hypersensitivity response in Nicotiana sylvestris.

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The hypersensitivity resistance response directed by the N' gene in Nicotiana sylvestris is elicited by the tobacco mosaic virus (TMV) coat protein R46G, but not by the U1 wild-type TMV coat protein. In this study, the structural and hydrodynamic properties of R46G and wild-type coat proteins were

The C-terminal half of Phytophthora infestans RXLR effector AVR3a is sufficient to trigger R3a-mediated hypersensitivity and suppress INF1-induced cell death in Nicotiana benthamiana.

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The RXLR cytoplasmic effector AVR3a of Phytophthora infestans confers avirulence on potato plants carrying the R3a gene. Two alleles of Avr3a encode secreted proteins that differ in only three amino acid residues, two of which are in the mature protein. Avirulent isolates carry the Avr3a allele,

Synthesis of Daidzein Glycosides, α-Tocopherol Glycosides, Hesperetin Glycosides by Bioconversion and Their Potential for Anti-Allergic Functional-Foods and Cosmetics.

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Daidzein is a common isoflavone, having multiple biological effects such as anti-inflammation, anti-allergy, and anti-aging. α-Tocopherol is the tocopherol isoform with the highest vitamin E activity including anti-allergic activity and anti-cancer activity. Hesperetin is a flavone, which shows

A tobacco plasma membrane calmodulin-binding transporter confers Ni2+ tolerance and Pb2+ hypersensitivity in transgenic plants.

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All organisms require a minimal amount of metal ions to sustain their metabolism, growth and development. At the same time, their intrinsic metal-uptake systems render them vulnerable to toxic levels of metals in the biosphere. Using radiolabeled recombinant calmodulin as a probe to screen a tobacco

Structure-function relationship between tobacco mosaic virus coat protein and hypersensitivity in Nicotiana sylvestris.

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Alterations in the structure of the tobacco mosaic virus (TMV) coat protein affect the elicitation of the N' gene hypersensitive response (HR) in Nicotiana sylvestris. To investigate this structure-function relationship, amino acid substitutions with predicted structural effects were created

A point mutation in the tobacco mosaic virus capsid protein gene induces hypersensitivity in Nicotiana sylvestris.

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In Nicotiana sylvestris, the N' gene confers hypersensitive resistance to some strains of tobacco mosaic virus (TMV) but not to the common strain. TMV sequences responsible for inducing local lesion formation in this host were identified by using cDNA clones to construct genomic recombinants between

Ectopic overexpression of SlHsfA3, a heat stress transcription factor from tomato, confers increased thermotolerance and salt hypersensitivity in germination in transgenic Arabidopsis.

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Plant heat stress transcription factors (Hsfs) are the critical components involved in mediating responses to various environmental stressors. However, the detailed roles of many plant Hsfs are far from fully understood. In this study, an Hsf (SlHsfA3) was isolated from the cultivated tomato

[Phenylalanine ammonia-lyase activity and tobacco mosaic virus hypersensitivity of Nicotiana tabacum var. xanthine].

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[Allergic reaction of a variety of Nicotiana tabacum to tobacco mosaic].

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Allergic contact dermatitis from Nicotiana tabacum.

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α-Expansin EXPA4 Positively Regulates Abiotic Stress Tolerance but Negatively Regulates Pathogen Resistance in Nicotiana tabacum.

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Since they function as cell wall-loosening proteins, expansins can affect plant growth, developmental processes and environmental stress responses. Our previous study demonstrated that changes in Nicotiana tabacum α-expansin 4 (EXPA4) expression affect the sensitivity of tobacco to Tobacco mosaic

Wildfire of Soybean Caused by Pseudomonas syringae pv. tabaci, a New Disease in Korea.

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In 2006 and 2007, a new bacterial disease was observed in field-cultivated soybeans in Boeun District and Munkyung City of Korea. The disease caused severe blighting of soybean (Glycine max) leaves. Soybean leaves in fields showed yellowish spots with brown centers. Brown and dead areas of variable

A New Race of Pseudomonas syringae pv. tabaci on Tobacco in Zimbabwe.

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Two forms of Pseudomonas syringae pv. tabaci cause wildfire (Tox⁺) and angular leaf spot (Tox^-) diseases of tobacco in Zimbabwe. Two races of the pathogen (races 0 and 1) occur in Zimbabwe (4). Two groups of cultivars are available: one with resistance to race 0 only, tbe

[Spatial distribution of lectin activity in perilesional areas of tobacco leaves inoculated with tobacco mosaic virus].

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The activities of lectins and peroxidase and lignin content were studied in the perilesional area of leaves in two tobacco species (Nicotiana tabacum L., cultivar Samsun NN, and N. glutinosa L.) inoculated with tobacco mosaic virus. The development of hypersensitivity response proved to be

Necrotic Lesion Resistance Induced by Peronospora tabacina on Leaves of Nicotiana obtusifolia.

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ABSTRACT Infection of Nicotiana obtusifolia plant introduction (PI) #555573 by the downy mildew pathogen Peronospora tabacina resulted in a compatible interaction, in which P. tabacina penetrated and freely colonized host leaf tissue. This interaction became incompatible 5 to 6 days later, with the

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Herbal & Natural Medicine

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