populus rotundifolia/nicotine

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Over-expression of a putative poplar glycosyltransferase gene, PtGT1, in tobacco increases lignin content and causes early flowering.

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Family 1 glycosyltransferases catalyse the glycosylation of small molecules and play an important role in maintaining cell homeostasis and regulating plant growth and development. In this study, a putative glycosyltransferase gene of family 1, PtGT1, was cloned from poplar (Populus tomentosa Carr.).

Transgenic tobacco plants expressing a P1B-ATPase gene from Populus tomentosa Carr. (PtoHMA5) demonstrate improved cadmium transport.

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Heavy metal ATPase (HMA) plays an important role in phytoremediation via long-distance transportation from root to shoot. In this report, we identified a heavy metal ATPase gene, PtoHMA5, from Populus tomentosa Carr. Its encoded peptide consists of 967 amino acids and has eight trans-membrane motifs

TOBFAC: the database of tobacco transcription factors.

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BACKGROUND Regulation of gene expression at the level of transcription is a major control point in many biological processes. Transcription factors (TFs) can activate and/or repress the transcriptional rate of target genes and vascular plant genomes devote approximately 7% of their coding capacity

Over-expression of poplar NAC15 gene enhances wood formation in transgenic tobacco.

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NAC (NAM/ATAF/CUC) is one of the largest plant-specific transcription factor (TF) families known to play significant roles in wood formation. Acting as master gene regulators, a few NAC genes can activate secondary wall biosynthesis during wood formation in woody

Stress responsive zinc-finger protein gene of Populus euphratica in tobacco enhances salt tolerance.

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The Populus euphratica stress responsive zinc-finger protein gene PSTZ, which encodes a protein including typical Cys(2)/His(2) zinc finger structure, was isolated by reverse transcription-polymerase chain reaction from P. euphratica. Northern hybridization revealed that its expression was induced

[Morphological analysis of transgenic tobacco plants expressing the PnEXPA3 gene of black poplar (Populus nigra)].

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Transgenic tobacco plants overexpressing the PnEXPA3 gene of black poplar (Populus nigra), which encodes alpha-expansin, were obtained. The transgenic plants were characterized by increased size of epidermic and mesophyll cells of leaves. However, the size of leaves remained normal. Overexpression

The Effect of Poplar PsnGS1.2 Overexpression on Growth, Secondary Cell Wall, and Fiber Characteristics in Tobacco.

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The glutamine synthetase (GS1) is a key enzyme that catalyzes the reaction of glutamate and ammonia to produce glutamine in the nitrogen (N) metabolism. Previous studies on GS1s in several plant species suggest that overexpression of GS1s can enhance N utilization, accelerate plant vegetative

Over-expression of the triploid white poplar PtDrl01 gene in tobacco enhances resistance to tobacco mosaic virus.

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A full-length cDNA, designated as the Populus tomentosa disease resistance-like 01 (PtDrl01) gene, was isolated from triploid white poplar [(Populus tomentosa × P. bolleana) × P. tomentosa]. The protein thought to be produced by the PtDrl01 gene contains a nuclear localisation sequence (NLS), a

Enhancement of secondary xylem cell proliferation by Arabidopsis cyclin D overexpression in tobacco plants.

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Secondary xylem is composed of daughter cells produced by the vascular cambium in the stem. Cell proliferation of the secondary xylem is the result of long-range cell division in the vascular cambium. Most xylem cells have a thickened secondary cell wall, representing a large amount of biomass

Stable and specific expression of 4-coumarate:coenzyme A ligase gene (4CL1) driven by the xylem-specific Pto4CL1 promoter in the transgenic tobacco.

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The ability of 4-coumarate:coenzyme A ligase promoter from Populus tomentosa (Pto4CL1p) to drive expression of the GUS reporter gene and 4-coumarate:coenzyme A ligase gene in tobacco has been studied using transgenic plants produced by Agrobacterium-mediated transformation. Intense GUS histochemical

Ectopic expression of a poplar APETALA3-like gene in tobacco causes early flowering and fast growth.

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A MADS-box gene, designated PtAP3, was isolated from a floral bud cDNA library derived from Populus tomentosa. Analysis by multiple alignments of both nucleotide and amino acid sequences, together with phylogenetic analysis, revealed that PtAP3 is an ortholog of Arabidopsis AP3. Analysis of RNA

Analysis of the spatial and temporal expression pattern directed by the Populus tomentosa 4-coumarate:CoA ligase Pto4CL2 promoter in transgenic tobacco.

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4-Coumarate:CoA ligase (4CL) is a key enzyme in the phenylpropanoid synthesis pathway. The Pto4CL2 promoter was cloned from Populus tomentosa Carr. and fused to the reporter gene encoding β-glucuronidase (GUS); the complex expression patterns directed by the Pto4CL2 promoter were then characterized

Leaf senescence is delayed in tobacco plants expressing the maize knotted1 gene under the control of a wound-inducible promoter.

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To extend the shelf life of freshly harvested vegetables and cut flowers, a maize homeobox gene Knotted1 (kn1) was placed under the control of a wound-inducible promoter win3.12 from hybrid poplar (Populus trichocarpa x P. deltoides) and introduced into tobacco plants (Nicotiana tabacum cv. Xanthi).

Tobacco, Sunflower and High Biomass SRC Clones Show Potential for Trace Metal Phytoextraction on a Moderately Contaminated Field Site in Belgium.

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Phytoextraction could be a potential management option for diffusely Cd-Zn-Pb-polluted agricultural land in Northeast Belgium. The use of high yielding crops with a sufficiently high metal accumulation is preferred as these are expected to both gradually decontaminate the soil while generating an

Isolation of a LEAFY homolog from Populus tomentosa: expression of PtLFY in P. tomentosa floral buds and PtLFY-IR-mediated gene silencing in tobacco (Nicotiana tabacum).

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To understand the genetic and molecular mechanisms underlying floral development in Populus tomentosa, we isolated PtLFY, a LEAFY homolog, from a P. tomentosa floral bud cDNA library. DNA gel blot analysis showed that PtLFY is present as a single copy in the genomes of both male and female

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