Tobacco has previously been used in investigations of metals and radionuclide uptake. This study presents determination bioaccumulation translocation 60Co2+ ions tobacco plants (Nicotiana tabacum L.) grown Hoagland’s nutrient solution. Cobalt concentration increased with increasing Bioaccumulation from the initial C0 = 0.96 μM Co reached 90% after 7 day cultivation. Only small amounts accumulat...

Investigations of the effects of elevated ozone (O(3)) on the virus-plant system were conducted to inform virus pathogen management strategies better. One susceptible cultivar of tobacco (Nicotiana tabacum L. cv. Yongding) and a resistant cultivar (Nicotiana tabacum L. cv. Vam) to Potato virus Y petiole necrosis strain (PVY(N)) infection were grown in open-top chambers under ambient and elevate...

The allotetraploid plant Nicotiana tabacum (common tobacco) is a major crop species and a model organism, for which only very fragmented genomic sequences are currently available. Here we report high-quality draft genomes for three main tobacco varieties. These genomes show both the low divergence of tobacco from its ancestors and microsynteny with other Solanaceae species. We identify over 90,...

Ethylene is a plant hormone that influences many aspects of plant growth and development (10). The biosynthetic pathway of ethylene production in higher plants is well defined. The rate-limiting step in this pathway is the reaction catalyzed by ACC' synthase (S-adenosyl-L-methionine methyl-thioadenosine-lyase, EC 4.4.1.4), which converts Sadenosyl-L-methionine to ACC. Tobacco (Nicotiana tabacum...

The impending curtailment of tobacco (Nicotiana tabacum L.) use in its traditional smoking form demands that economies previously dependent on as a cash crop find alternative sources income. Alternatively, to enable the continued existing infrastructure and experience by growers, these could continue grow for other uses. objective this trial was, therefore, explore uses tobacco, namely source s...

effects of excess concentrations of boron on major cell wall components of tobacco cells(nicotiana tabacum l. cv. burley 21) were studied. pectin, xyloglucan, hydroxyproline-richglycoproteins (extensin), and arabinogalactan proteins were characterized. results showedthat increased boron supply resulted in significant decrease in cell and cell wall dry weights.also, high concentrations of boron ...

Glyphosate (N-phosphonomethylglycine) caused a significant decrease or a slight increase in ethylene production in tobacco callus (Nicotiana tabacum L.) depending on the concentration of indole-3-acetic acid (IAA) present in the medium. IAA stimulated ethylene production, but a pretreatment with glyphosate greatly reduced the IAA-induced ethylene production. Inasmuch as glyphosate treatment pro...