Another Haploid Nicotiana tabacum Plant

1932 ◽  
Vol 93 (2) ◽  
pp. 227-230 ◽  
Author(s):  
Francis A. McCray
Keyword(s):  
Nicotiana Tabacum ◽  
Tabacum Plant

scholarly journals Evolutionary and Predictive Functional Insights into the Aquaporin Gene Family in the Allotetraploid Plant Nicotiana tabacum

2020 ◽  
Vol 21 (13) ◽  
pp. 4743 ◽  
Author(s):  
Jahed Ahmed ◽  
Sébastien Mercx ◽  
Marc Boutry ◽  
François Chaumont
Keyword(s):  
Nicotiana Tabacum ◽  
Substrate Specificity ◽  
Gene Family ◽  
Splice Variants ◽  
Nicotiana Sylvestris ◽  
Membrane Diffusion ◽  
Suspension Cells ◽  
Aquaporin Gene ◽  
Organ Specific ◽  
Tabacum Plant

Aquaporins (AQPs) are a class of integral membrane proteins that facilitate the membrane diffusion of water and other small solutes. Nicotiana tabacum is an important model plant, and its allotetraploid genome has recently been released, providing us with the opportunity to analyze the AQP gene family and its evolution. A total of 88 full-length AQP genes were identified in the N. tabacum genome, and the encoding proteins were assigned into five subfamilies: 34 plasma membrane intrinsic proteins (PIPs); 27 tonoplast intrinsic proteins (TIPs); 20 nodulin26-like intrinsic proteins (NIPs); 3 small basic intrinsic proteins (SIPs); 4 uncharacterized X intrinsic proteins (XIPs), including two splice variants. We also analyzed the genomes of two N. tabacum ancestors, Nicotiana tomentosiformis and Nicotiana sylvestris, and identified 49 AQP genes in each species. Functional prediction, based on the substrate specificity-determining positions (SDPs), revealed significant differences in substrate specificity among the AQP subfamilies. Analysis of the organ-specific AQP expression levels in the N. tabacum plant and RNA-seq data of N. tabacum bright yellow-2 suspension cells indicated that many AQPs are simultaneously expressed, but differentially, according to the organs or the cells. Altogether, these data constitute an important resource for future investigations of the molecular, evolutionary, and physiological functions of AQPs in N. tabacum.

scholarly journals Penicillium chrysogenum antifungal protein (PAF) production in transgenic tobacco (Nicotiana tabacum) plant

2010 ◽  
pp. 77-82
Author(s):  
Judit Oláh ◽  
Zoltán Balla ◽  
Miklós Fári ◽  
Márton Miskei
Keyword(s):  
Nicotiana Tabacum ◽  
Penicillium Chrysogenum ◽  
Tobacco Plant ◽  
Molecular Farming ◽  
Plastid Transformation ◽  
Plant Biotechnology ◽  
Agricultural Science ◽  
Antifungal Protein ◽  
Dna And Rna ◽  
Tabacum Plant

Under the „Molecular farming” research program (product vaccines and substances for medical use with gene manipulated plant) in 2007 in UD Centre for Agricultural Sciences and Engineering Faculty of Agricultural Science Institute of Horticulture Department of Plant Biotechnology experiments were launched to transform tobacco plant by PAF antifungal protein. Our aim was to learn the transformation technics. We chose theNicotiana tabacum and PAF as model systems.Our work was to express several different paf constructions in plants with nuclear and plastid transformation too. After that we confirmed the presence of paf gene in the level of DNA and RNA.

Tobacco Mosaic Virus-Infected Tissue

1985 ◽  
Vol 43 ◽  
pp. 510-511
Author(s):  
Egbert W. Henry
Keyword(s):  
Nicotiana Tabacum ◽  
Tobacco Mosaic Virus ◽  
Chlorogenic Acid ◽  
Mosaic Virus ◽  
Host Resistance ◽  
Oxidative Metabolism ◽  
Leaf Tissue ◽  
Vein Clearing ◽  
Basal Septum ◽  
Concentration Levels

Tobacco mosaic virus (TMV) infection has been studied in several investigations of Nicotiana tabacum leaf tissue. Earlier studies have suggested that TMV infection does not have precise infective selectivity vs. specific types of tissues. Also, such tissue conditions as vein banding, vein clearing, liquification and suberization may result from causes other than direct TMV infection. At the present time, it is thought that the plasmodesmata, ectodesmata and perhaps the plasmodesmata of the basal septum may represent the actual or more precise sites of TMV infection.TMV infection has been implicated in elevated levels of oxidative metabolism; also, TMV infection may have a major role in host resistance vs. concentration levels of phenolic-type enzymes. Therefore, enzymes such as polyphenol oxidase, peroxidase and phenylalamine ammonia-lyase may show an increase in activity in response to TMV infection. It has been reported that TMV infection may cause a decrease in o-dihydric phenols (chlorogenic acid) in some tissues.

Changes in polyamine synthesis during anther development and pollen germination in tobacco (Nicotiana tabacum)

1994 ◽  
Vol 92 (1) ◽  
pp. 61-68 ◽  
Author(s):  
Fatiha Chibi ◽  
Angel Jesus Matilla ◽  
Trinidad Angosto ◽  
Dolores Garrido
Keyword(s):  
Nicotiana Tabacum ◽  
Pollen Germination ◽  
Anther Development ◽  
Polyamine Synthesis

Tobacco Chemistry/Chemische Zusammensetzung des Tabaks

1976 ◽  
Vol 8 (6) ◽  
Author(s):  
Arne J. Aasen ◽  
Sven-Olof Almquist ◽  
Curt R. Enzell
Keyword(s):  
Nicotiana Tabacum ◽  
Nicotiana Tabacum L

Abstract35: two isomeric 5,6-Epoxy-3-hydroxy-7-megastigmen-9-ones from Nicotiana tabacum L.

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