Abstract The novel and revolutionary approach to plant protection presented in this work, based on the preparation of bifunctional salts a resistance inducer combined with polyamine cation, may become potential solution future for reducing effects abiotic biotic stresses which is exposed. This study presents synthesis, physical properties, phytotoxicity, systemic acquired (SAR) induction effica...

False broomrape on tobacco (Nicotiana tabacum) can be induced by applying cytokinins to the roots, by causing an increase in the cytokinin-auxin ratio in the roots, by removing the apical and auxillary buds, or by applying extracts from tobacco with false broomrape to the roots of healthy plants. It can be prevented by treating debudded plants with auxin.

Host plant performance, esterase, and virus transmission tests revealed cassava-strain and sweetpotato-strain populations of whiteßy Bemisia tabaci (Gennadius) biotypes in India. Individuals from the sweetpotato-reared population did not breed on cassava, Manihot esculenta Crantz, and the cassava-strain-reared individuals failed to develop on sweetpotato, Ipomoea batatus (L.) Lam. Eggplant, Sol...

Tobacco mosaic virus infection of Nicotiana tabacum mesophyll protoplasts did not affect the pattern of chloroplast or total cellular DNA synthesis for at least 120 h when compared with that of mock-infected cells. Calli derived from infected protoplasts often showed large amounts of tobacco mosaic virus RNA and coat protein.

Transgenic tobacco (Nicotiana tabacum cultivar W38) plants that overproduce petunia chloroplastic Cu/Zn superoxide dismutase were exposed to ozone dosages that injure control tobacco plants. Based on foliar injury ratings, there was no consistent protection provided to the transgenic plants. These data indicate that an increase in the chloroplastic Cu/Zn superoxide dismutase alone is not suffic...

2-Isopropyl-4-dimethylamino-5-methylphenyl-1-piperidine carboxylate methyl chloride, 90%, applied to rootless tobacco (Nicotiana tabacum cv. Samson) seedlings inhibits the incorporation of (14)C-mevalonate into sterols. Concomitantly, the retardant causes the accumulation of squalene-2,3-epoxide, an intermediate in sterol biosynthesis. The results with tobacco are identical to those produced by...

Abstract Contamination by heavy metals (HM) is a global concern due to their impact on terrestrial and aquatic environments. This question has great relevance in agricultural areas excessive chemical fertilization. In this sense, Cd toxic element that can reach soils through fertilization or sewage sludges. Tobacco plants ( Nicotiana tabacum L.) uptake accumulate tissues, therefore, an increase...

Several cDNA clones encoding 4-coumarate:coenzyme A ligase (4CL) were isolated from a tobacco (Nicotiana tabacum) cDNA library and grouped into two classes. Sequencing of one cDNA from each class showed that the clones were similar to other 4CL genes and about 80% identical with each other. Genomic Southern blots using DNA from Nicotiana sylvestris, Nicotiana tomentosiformis, and N. tabacum dem...

Cembranoids produced by tobacco glandular trichomes have bioactivities in resistance to insect pests and pathogens. Cembratrien-ol synthase (CBTS) plays a key role the biosynthesis of cembranoids directly determines cembranoid content tobacco. This study examined effect changing CBTS1 expression on pest Spodoptera frugiperda oomycete pathogen Phytophthora nicotianae. The CDS sequence was cloned...

Transgenic tobacco (Nicotiana tabacum cv Xanthi) plants expressing a genetically engineered fused enzyme between rat cytochrome P4501A1 (CYPlAl) and yeast NADPH-cytochrome P450 oxidoreductase were produced. The expression plasmid pCFC2 for the fused enzyme was constructed by insertion of the corresponding cDNA into the expression vector pNCOl under the control of the cauliflower mosaic virus 35...