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Sivu 1 alkaen 44 tuloksia
Characterization of two laccases of loblolly pine (Pinus taeda) expressed in tobacco BY-2 cells.
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We previously showed that eight laccase genes (Lac 1-Lac 8) are preferentially expressed in differentiating xylem and are associated with lignification in loblolly pine (Pinus taeda) [Sato et al. (2001) J Plant Res 114:147-155]. In this study we generated transgenic tobacco suspension cell cultures
Isolation of 4-coumarate Co-A ligase gene promoter from loblolly pine (Pinus taeda) and characterization of tissue-specific activity in transgenic tobacco.
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We characterized promoter activity of a phenylpropanoid biosynthetic gene encoding 4-coumarate Co-A ligase (4CL), Pta4Clalpha, from Pinus taeda. Histochemical- and quantitative assays of GUS expression in the vascular tissue were performed using transgenic tobacco plants expressing promoter-GUS
In-vivo data on the influence of tobacco smoke and UV light on murine skin.
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Inhaled tobacco smoke comes in direct contact with few organs such as mouth, lungs, and stomach. Cigarette smoke (CS) in lungs has been extensively studied. However, limited data exist on its effect on skin, and there are no long-term experimental studies suggesting toxic effects on skin. Even
Chloroplast-encoded chlB gene from Pinus thunbergii promotes root and early chlorophyll pigment development in Nicotiana tabaccum.
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Chlorophyll biosynthesis is catalyzed by two multi subunit enzymes; a light-dependent and a light-independent protochlorophyllide oxidoreductase. The light-independent enzyme consists of three subunits (ChlL, ChlN and ChlB) in photosynthetic bacteria and plastids in which the chlB gene encodes the
Characterization of the tissue-specific expression of phenylalanine ammonia-lyase gene promoter from loblolly pine (Pinus taeda) in Nicotiana tabacum.
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We isolated the 5' flanking region of a gene for phenylalanine ammonia-lyase (PAL; EC 4.3.1.5) from Pinus taeda, PtaPAL. To investigate the tissue-specific expression of the PtaPAL promoter, histochemical assay of GUS activity was performed using the transgenic tobacco expressing the PtaPAL
A cerato-platanin-like protein HaCPL2 from Heterobasidion annosum sensu stricto induces cell death in Nicotiana tabacum and Pinus sylvestris.
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The cerato-platanin family is a group of small secreted cysteine-rich proteins exclusive for filamentous fungi. They have been shown to be involved in the interactions between fungi and plants. Functional characterization of members from this family has been performed mainly in Ascomycota, except
Towards male sterility in Pinus radiata--a stilbene synthase approach to genetically engineer nuclear male sterility.
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A male cone-specific promoter from Pinus radiata D. Don (radiata pine) was used to express a stilbene synthase gene (STS) in anthers of transgenic Nicotiana tabacum plants, resulting in complete male sterility in 70% of transformed plants. Three plants were 98%-99.9% male sterile, as evidenced by
Characterization of Three L-Asparaginases from Maritime Pine (Pinus pinaster Ait.).
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Asparaginases (ASPG, EC 3.5.1.1) catalyze the hydrolysis of the amide group of L-asparagine producing L-aspartate and ammonium. Three ASPG, PpASPG1, PpASPG2, and PpASPG3, have been identified in the transcriptome of maritime pine (Pinus pinaster Ait.) that were transiently expressed in Nicotiana
Secondary xylem-specific expression of caffeoyl-coenzyme A 3-O-methyltransferase plays an important role in the methylation pathway associated with lignin biosynthesis in loblolly pine.
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Two types of structurally distinct O-methyltransferases mediate the methylation of hydroxylated monomeric lignin precursors in angiosperms. Caffeate 3-O-methyltransferase (COMT; EC 2.1.1.68) methylates the free acids and caffeoyl CoA 3-O-methyltransferase (CCoAOMT; EC 2.1.1.104) methylates coenzyme
A genomic clone of a type I cab gene encoding a light harvesting chlorophyll a/b binding protein of photosystem II identified from lodgepole pine.
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A type I cab gene encoding chlorophyll a and b binding protein from lodgepole pine (Pinus contorta Dougl., var. latifolia (Engelm.)) has been isolated and sequenced. The gene encodes a proposed 40 amino acid transit peptide and a 234 amino acid mature CAB polypeptide. There is no evidence of an
A mongolian pine specific endoplasmic reticulum localized CALMODULIN-LIKE calcium binding protein enhances arabidopsis growth.
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Stress-adapted wild plants are natural sources of novel genes for molecular breeding. Here, we conducted a transcriptional analysis of Pinus sylvestris var. mongolica Litv, an evergreen pine in northeastern China, to identify a novel CALMODULIN-LIKE protein-encoding gene, PsCML1, no significant
Heterologous array analysis in Pinaceae: hybridization of Pinus taeda cDNA arrays with cDNA from needles and embryogenic cultures of P. Taeda, P. Sylvestris or Picea abies.
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Hybridization of labelled cDNA from various cell types with high-density arrays of expressed sequence tags is a powerful technique for investigating gene expression. Few conifer cDNA libraries have been sequenced. Because of the high level of sequence conservation between Pinus and Picea we have
Phytotoxic Effects of Commercial Eucalyptus citriodora, Lavandula angustifolia, and Pinus sylvestris Essential Oils on Weeds, Crops, and Invasive Species.
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BACKGROUND
essential oils are well known for their pharmacological effectiveness as well as their repellent, insecticide, and herbicide activities. The emergence of resistant weeds, due to the overuse of synthetic herbicides, makes it necessary to find natural alternatives forMolecular cloning and expression of a Eucalyptus gunnii cDNA clone encoding cinnamyl alcohol dehydrogenase.
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Cinnamyl alcohol dehydrogenase (CAD) catalyses the reduction of hydroxycinnamyl aldehydes (sinapyl, paracoumaryl, coniferyl aldehydes) to the corresponding alcohols which are the direct monomeric precursors of lignins. Recently, we have purified from Eucalyptus gunnii two isoforms of CAD (CAD1 and
Molecular cloning, sequence analysis and elicitor-/ozone-induced accumulation of cinnamyl alcohol dehydrogenase from Norway spruce (Picea abies L.).
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Cinnamyl alcohol dehydrogenase (CAD) is an enzyme involved in lignin biosynthesis. We have previously isolated pure CAD enzyme from Norway spruce (Picea abies L.) cell culture. Here we report on partial protein sequences of the 42 kDa CAD polypeptide. A cDNA encoding CAD was isolated from the spruce
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