Effects of homeopathic arsenic on tobacco plant resistance to tobacco mosaic virus.

Homeopathy ◽  
2003 ◽  
Vol 92 (4) ◽  
pp. 195-202 ◽  
Author(s):  
L Betti ◽  
L Lazzarato ◽  
G Trebbi ◽  
M Brizzi ◽  
GL Calzoni ◽  
...  
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Plant Resistance ◽  
Tobacco Plant

scholarly journals NTH201, a Novel Class II KNOTTED1-Like Protein, Facilitates the Cell-to-Cell Movement of Tobacco mosaic virus in Tobacco

2008 ◽  
Vol 21 (5) ◽  
pp. 586-596 ◽  
Author(s):  
Atsushi Yoshii ◽  
Takumi Shimizu ◽  
Akiko Yoshida ◽  
Koji Hamada ◽  
Keitaro Sakurai ◽  
...  
Keyword(s):  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Cultured Cells ◽  
Tobacco Plant ◽  
Cell Movement ◽  
Class Ii ◽  
Early Infection ◽  
Virus Induced Gene Silencing ◽  
Infection Period ◽  
Rna Accumulation

NTH201, a novel class II KNOTTED1-like protein gene, was cloned from tobacco (Nicotiana tabacum cv. Xanthi) and its role in Tobacco mosaic virus (TMV) infection was analyzed. Virus-induced gene silencing of NTH201 caused a delay in viral RNA accumulation as well as virus spread in infected tobacco plants. Overexpression of the gene in a transgenic tobacco plant (N. tabacum cv. Xanthi nc) infected by TMV showed larger local lesions than those of the nontransgenic plant. NTH201 exhibited no intercellular trafficking ability but did exhibit colocalization with movement protein (MP) at the plasmodesmata. When NTH201-overexpressing tobacco BY-2 cultured cells were infected with TMV, the accumulation of MP but not of viral genomic and subgenomic RNA clearly was accelerated compared with those in nontransgenic cells at an early infection period. The formation of virus replication complexes (VRC) also was accelerated in these transgenic cells. Conversely, NTH201-silenced cells showed less MP accumulations and fewer VRC formations than did nontransgenic cells. These results suggested that NTH201 might indirectly facilitate MP accumulation and VRC formation in TMV-infected cells, leading to rapid viral cell-to-cell movement in plants at an early infection stage.

Transcriptionally and post-transcriptionally regulated response of 13 calmodulin genes to tobacco mosaic virus-induced cell death and wounding in tobacco plant

2001 ◽  
Vol 268 (14) ◽  
pp. 3916-3929 ◽  
Author(s):  
Hiromoto Yamakawa ◽  
Ichiro Mitsuhara ◽  
Naoko Ito ◽  
Shigemi Seo ◽  
Hiroshi Kamada ◽  
...  
Keyword(s):  
Cell Death ◽  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Tobacco Plant

scholarly journals Simple modifications of nicotinic, isonicotinic, and 2,6-dichloroisonicotinic acids toward new weapons against plant diseases

2021 ◽  
Vol 19 (1) ◽  
pp. 1108-1115
Author(s):  
Patrycja Czerwoniec ◽  
Joanna Szymkowiak ◽  
Marcin Smiglak
Keyword(s):  
Immune System ◽  
Nicotiana Tabacum ◽  
Tobacco Mosaic Virus ◽  
Mosaic Virus ◽  
Plant Resistance ◽  
Plant Diseases ◽  
Resistance Induction ◽  
Ecological Methods ◽  
Derivatives Of

Abstract Recently, the biggest challenge in agriculture is the search for new, effective, and ecological methods of protecting plants against diseases. One of the fastest-growing and prospective strategies is a method based on activating the plant’s natural defenses. The use of suitable substances (elicitors) stimulates the immune system of plants, which makes them resistant to infections even before the first symptoms appear. This article presents preparation, characterization, phytotoxicity, and plant resistance induction efficacy of 28 ester derivatives of nicotinic, isonicotinic, and 2,6-dichloroisonicotinic acids as potential inducers of plants’ natural immune system. Plant resistance induction efficacy tests were performed on tobacco Nicotiana tabacum var. Xanthi infected by the tobacco mosaic virus (TMV).

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