Lothar Willmitzer

TargetSearch - a Bioconductor package for the efficient preprocessing of GC-MS metabolite profiling data (2009)

Cuadros-Inostroza, Álvaro, Caldana, Camila, Redestig, Henning, Kusano, Miyako, Lisec, Jan, Peña-Cortés, Hugo, ...

Abstract Background Metabolite profiling, the simultaneous quantification of multiple metabolites in an experiment, is becoming increasingly popular, particularly with the rise of systems-level...

Enhancing Vacuolar Sucrose Cleavage Within the Developing Potato Tuber has only Minor Effects on Metabolism (2006)

Junker, Bjoern H., Wuttke, Rene, Nunes-Nesi, Adriano, Steinhauser, Dirk, Schauer, Nicolas, Büssis, Dirk, ...

Modification of tuber carbohydrate metabolism by the tuber-specific expression of a yeast invertase targeted to the cytosol or apoplast has previously been demonstrated to have diverse effects on...

Enhancing Vacuolar Sucrose Cleavage within the Developing Potato Tuber has Only Minor Effects on Metabolism (2006)

Junker, Bjoern H., Wuttke, Rene, Nunes-Nesi, Adriano, Steinhauser, Dirk, Schauer, Nicolas, Büssis, Dirk, ...

Modification of tuber carbohydrate metabolism by the tuber-specific expression of a yeast invertase targeted to the cytosol or apoplast has previously been demonstrated to have diverse effects on...

GMD@CSB.DB: the Golm Metabolome Database (2005)

Joachim Kopka, Nicolas Schauer, Stephan Krueger, Claudia Birkemeyer, Björn Usadel, Eveline Bergmüller, ...

Summary: Metabolomics, in particular gas chromatography–mass spectrometry (GC–MS) based metabolite profiling of biological extracts, is rapidly becoming one of the cornerstones of functional...

Integrative gene-metabolite network with implemented causality deciphers informational fluxes of sulphur stress response (2005)

Nikiforova, Victoria J., Daub, Carsten O., Hesse, Holger, Willmitzer, Lothar, Hoefgen, Rainer

The systematic accumulation of gene expression data, although revolutionary, is insufficient in itself for an understanding of system-level physiology. In the post-genomic era, the next cognitive...

Integrative gene-metabolite network with implemented causality deciphers informational fluxes of sulphur stress response (2005)

Nikiforova, Victoria J., Daub, Carsten O., Hesse, Holger, Willmitzer, Lothar, Hoefgen, Rainer

The systematic accumulation of gene expression data, although revolutionary, is insufficient in itself for an understanding of system-level physiology. In the post-genomic era, the next cognitive...

Tuber-Specific Cytosolic Expression of a Bacterial Phosphoglucomutase in Potato (Solanum tuberosum L.) Dramatically Alters Carbon Partitioning (2005)

Lytovchenko, Anna, Schauer, Nicolas, Willmitzer, Lothar, Fernie, Alisdair R.

Constitutive antisense inhibition of the cytosolic isoform of phosphoglucomutase in the potato (Solanum tuberosum L.) results in restriction of photosynthesis, growth inhibition and modified tuber...

Modulation of Fructokinase Activity of Potato (Solanum tuberosum) Results in Substantial Shifts in Tuber Metabolism (2005)

Davies, Howard V., Shepherd, Louise V. T., Burrell, Michael M., Carrari, Fernando, Urbanczyk-Wochniak, Ewa, Leisse, Andrea, ...

Potato plants (Solanum tuberosum L. cvs. Desiree and Record) transformed with sense and antisense constructs of a cDNA encoding the potato fructokinase StFK1 exhibited altered transcription of this...

Enhancing Vacuolar Sucrose Cleavage within the Developing Potato Tuber has Only Minor Effects on Metabolism (2005)

Junker, Bjoern H., Wuttke, Rene, Nunes-Nesi, Adriano, Steinhauser, Dirk, Schauer, Nicolas, Büssis, Dirk, ...

Modification of tuber carbohydrate metabolism by the tuber-specific expression of a yeast invertase targeted to the cytosol or apoplast has previously been demonstrated to have diverse effects on...

Modulation of Fructokinase Activity of Potato (Solanum tuberosum) Results in Substantial Shifts in Tuber Metabolism (2005)

Davies, Howard V., Shepherd, Louise V. T., Burrell, Michael M., Carrari, Fernando, Urbanczyk-Wochniak, Ewa, Leisse, Andrea, ...

Potato plants (Solanum tuberosum L. cvs Desiree and Record) transformed with sense and antisense constructs of a cDNA encoding the potato fructokinase StFK1 exhibited altered transcription of this...

Tuber-specific Cytosolic Expression of a Bacterial Phosphoglucomutase in Potato (Solanum tuberosum L.) Dramatically Alters Carbon Partitioning (2005)

Lytovchenko, Anna, Schauer, Nicolas, Willmitzer, Lothar, Fernie, Alisdair R.

Constitutive antisense inhibition of the cytosolic isoform of phosphoglucomutase in the potato (Solanum tuberosum L.) results in restriction of photosynthesis, growth inhibition and modified tuber...

GMD@CSB.DB: the Golm Metabolome Database (2005)

Kopka, Joachim, Schauer, Nicolas, Krueger, Stephan, Birkemeyer, Claudia, Usadel, Björn, Bergmüller, Eveline, ...

Summary: Metabolomics, in particular gas chromatography–mass spectrometry (GC–MS) based metabolite profiling of biological extracts, is rapidly becoming one of the cornerstones of functional...

Integrative gene-metabolite network with implemented causality deciphers informational fluxes of sulphur stress response (2005)

Nikiforova, Victoria J., Daub, Carsten O., Hesse, Holger, Willmitzer, Lothar, Hoefgen, Rainer

The systematic accumulation of gene expression data, although revolutionary, is insufficient in itself for an understanding of system-level physiology. In the post-genomic era, the next cognitive...

Tuber-Specific Cytosolic Expression of a Bacterial Phosphoglucomutase in Potato (Solanum tuberosum L.) Dramatically Alters Carbon Partitioning (2005)

Lytovchenko, Anna, Schauer, Nicolas, Willmitzer, Lothar, Fernie, Alisdair R.

Constitutive antisense inhibition of the cytosolic isoform of phosphoglucomutase in the potato (Solanum tuberosum L.) results in restriction of photosynthesis, growth inhibition and modified tuber...

Modulation of Fructokinase Activity of Potato (Solanum tuberosum) Results in Substantial Shifts in Tuber Metabolism (2005)

Davies, Howard V., Shepherd, Louise V. T., Burrell, Michael M., Carrari, Fernando, Urbanczyk-Wochniak, Ewa, Leisse, Andrea, ...

Potato plants (Solanum tuberosum L. cvs. Desiree and Record) transformed with sense and antisense constructs of a cDNA encoding the potato fructokinase StFK1 exhibited altered transcription of this...

Enhancing Vacuolar Sucrose Cleavage within the Developing Potato Tuber has Only Minor Effects on Metabolism (2005)

Junker, Bjoern H., Wuttke, Rene, Nunes-Nesi, Adriano, Steinhauser, Dirk, Schauer, Nicolas, Büssis, Dirk, ...

Modification of tuber carbohydrate metabolism by the tuber-specific expression of a yeast invertase targeted to the cytosol or apoplast has previously been demonstrated to have diverse effects on...

GMD@CSB.DB: the Golm metabolome database (2004)

Kopka, Joachim, Schauer, Nicolas, Krueger, Stephan, Birkemeyer, Claudia, Usadel, Björn, Bergmüller, Eveline, ...

Summary: Metabolomics, in particular gas chromatography - mass spectrometry (GC-MS) based metabolite profiling of biological extracts, is rapidly becoming one of the cornerstones of functional...

Towards dissecting nutrient metabolism in plants: a systems biology case study on sulphur metabolism (2004)

Nikiforova, Victoria J., Gakière, Bertrand, Kempa, Stefan, Adamik, Monika, Willmitzer, Lothar, Hesse, Holger, ...

A genomics analysis on sulphur metabolism has been conducted at the level of transcriptomics and metabolomics. The analysis of these data after applying bioinformatic tools is to reveal novel...

Towards dissecting nutrient metabolism in plants: a systems biology case study on sulphur metabolism (2004)

Nikiforova, Victoria J., Gakière, Bertrand, Kempa, Stefan, Adamik, Monika, Willmitzer, Lothar, Hesse, Holger, ...

A genomics analysis on sulphur metabolism has been conducted at the level of transcriptomics and metabolomics. The analysis of these data after applying bioinformatic tools is to reveal novel...

GMD@CSB.DB: the Golm metabolome database (2004)

Kopka, Joachim, Schauer, Nicolas, Krueger, Stephan, Birkemeyer, Claudia, Usadel, Björn, Bergmüller, Eveline, ...

Summary: Metabolomics, in particular gas chromatography - mass spectrometry (GC-MS) based metabolite profiling of biological extracts, is rapidly becoming one of the cornerstones of functional...

Towards dissecting nutrient metabolism in plants: a systems biology case study on sulphur metabolism (2004)

Nikiforova, Victoria J., Gakière, Bertrand, Kempa, Stefan, Adamik, Monika, Willmitzer, Lothar, Hesse, Holger, ...

A genomics analysis on sulphur metabolism has been conducted at the level of transcriptomics and metabolomics. The analysis of these data after applying bioinformatic tools is to reveal novel...

Expression of a Bacterial Xylose Isomerase in Potato Tubers Results in an Altered Hexose Composition and a Consequent Induction of Metabolism (2003)

Urbanczyk-Wochniak, Ewa, Leisse, Andrea, Roessner-Tunali, Ute, Lytovchenko, Anna, Reismeier, Jörg, Willmitzer, Lothar, ...

Here we investigate the role of hexoses in the metabolism of the developing potato (Solanum tuberosum) tuber by the expression of a bacterial xylose isomerase which catalyzes the interconversion of...

A yeast-based model system for cloning secreted and membrane proteins (2002)

SURPILI,MARCELO J., MÜLLER-RÖBER,BERND, WILLMITZER,LOTHAR

The targeting of proteins to cell organelles and membranes, or of proteins destined to secretion, is coordinated by signal sequences located at the 5´-end of their respective genes. A signal...

Starch content and yield increase as a result of altering adenylate pools in transgenic plants (2002)

Regierer,Babette, Fernie,Alisdair R., Springer,Franziska, Perez-Melis,Alicia, Leisse,Andrea, Koehl,Karin, ...

Starch represents the most important carbohydrate used for food and feed purposes. With the aim of increasing starch content, we decided to modulate the adenylate pool by changing the activity of the...

Starch content and yield increase as a result of altering adenylate pools in transgenic plants (2002)

Regierer, Babette, Fernie, Alisdair R., Springer, Franziska, Perez-Melis, Alicia, Leisse, Andrea, Koehl, Karin, ...

Starch represents the most important carbohydrate used for food and feed purposes. With the aim of increasing starch content, we decided to modulate the adenylate pool by changing the activity of the...

Impact of elevated cytosolic and apoplastic invertase activity on carbon metabolism during potato tuber development (2000)

Hajirezaei, Mohammad-Reza, Takahata, Yasuhiro, Trethewey, Richard N., Willmitzer, Lothar, Sonnewald, Uwe

During tuberization in Solanum tuberosum var. Desirée maximal catalytic activities of invertase(s) and sucrose synthase are inversely correlated. During the early stages, invertase...

Structure and Expression of Mitochondrial Citrate Synthases from Higher Plants (1996)

La Cognata, Ursula, Landschütze, Volker, Willmitzer, Lothar, Müller-Röber, Bernd

Mitochondrial citrate synthase (EC 4.1.3.7) represents the first enzyme of the tricarboxylic acid cycle, catalyzing the condensation of acetyl-CoA and oxaloacetate, finally yielding citrate and CoA....

Characterization of waldmeister, a novel developmental mutant in Arabidopsis thaliana (1996)

Felix, Gisela, Altmann, Thomas, Uwer, Ursula, Jessop, Alison, Willmitzer, Lothar, Morris, Peter-Christian

A novel Arabidopsis thaliana (L.) Heynh. developmental mutant, waldmeister (wam), is described. This mutant was found in the progeny arising from an Ac-Ds tagging experiment, but does not appear to...

Leaf-Specific Antisense Inhibition of Starch Biosynthesis in Transgenic Potato Plants Leads to an Increase in Photoassimilate Export from Source Leaves during the Light Period (1995)

Leidreiter, Kirsten, Heineke, Dieter, Heldt, Hans W., Müller-Röber, Bernd, Sonnewald, Uwe, Willmitzer, Lothar

In an attempt to study the importance of starch synthesis in leaves with respect to sink-source interactions, we investigated daily turnover of carbohydrates in leaves of transgenic potato plants...

Translatability of a plant-mRNA strongly influences its accumulation in transgenic plants (1990)

Vancanneyt, Guy, Rosahl, Sabine, Willmitzer, Lothar

Current knowledge of parameters affecting RNA stability is very restricted in plants. Here we investigated factors which might contribute to the stability of a particular plant messenger RNA. To this...

Organ-specific and dosage-dependent expression of a leaf/stem specific gene from potato after tagging and transfer into potato and tobacco plants (1987)

Stockhaus, Jorg, Eckes, Peter, Blau, Astrid, Schell, Jeff, Willmitzer, Lothar

ST-LS1, a single copy gene from potato displaying a leaf/stem specific gene expression, was tagged by an exon modification and introduced into both potato and tobacco cells using Agrobacteri-um...

Primary structure of a proteinase inhibitor II gene from potato (Solanum tuberosum) (1986)

Keil, Michael, Sanchez-Serrano, Jose, Schell, Jeff, Willmitzer, Lothar

The isolation and characterization of a genomic clone encoding proteinase inhibitor II of potato (Solanum tuberoaum is described. The structure of this gene was determined by sequencing a genomic...

Phosphorylated protamines.I. Binding stoichiometry and thermal stability of complexes with DNA (1977)

Willmitzer, Lothar, Bode, Jürgen, Wagner, Karl G.

cipher on a molecular level the role of protamine phos-phorylation in spermiogenesis, clupeine Z species containing one, two or three serine phosphates were prepared utilizing a recently developed...

Phosphorylated protamines.II. Circular dichroism of complexes with DNA, dependency on ionic strength (1977)

Willmitzer, Lothar, Bode, Jürgen, Wagner, Karl G.

The influence of protamine phosphorylation upon the conformation of nucleoprotamine complexes was studied at different ionic strengths using circular dichroism. The sharp onset of CD spectral changes...

Application of fluorescamine to the study of protein-DNA interactions (1975)

Bode, Jürgen, Willmitzer, Lothar

The reactivity of α-amino groups of basic proteins towards fluorescamine is essentially abolished if salt linkages with DNA phosphate groups are formed. This observation prompted the elaboration of...

Transgenic potato (Solanum tuberosum) tubers synthesize the full spectrum of inulin molecules naturally occurring in globe artichoke (Cynara scolymus) roots

Hellwege, Elke M., Czapla, Sylvia, Jahnke, Anuschka, Willmitzer, Lothar, Heyer, Arnd G.

The ability to synthesize high molecular weight inulin was transferred to potato plants via constitutive expression of the 1-SST (sucrose:sucrose 1-fructosyltransferase) and the 1-FFT (fructan:...

Electric Signaling and Pin2 Gene Expression on Different Abiotic Stimuli Depend on a Distinct Threshold Level of Endogenous Abscisic Acid in Several Abscisic Acid-Deficient Tomato Mutants1

Herde, Oliver, Peña Cortés, Hugo, Wasternack, Claus, Willmitzer, Lothar, Fisahn, Joachim

Experiments were performed on three abscisic acid (ABA)-deficient tomato (Lycopersicon esculentum Mill.) mutants, notabilis, flacca, and sitiens, to investigate the role of ABA and jasmonic acid (JA)...

A Possible Role for Pyrophosphate in the Coordination of Cytosolic and Plastidial Carbon Metabolism within the Potato Tuber1

Farré, Eva M., Geigenberger, Peter, Willmitzer, Lothar, Trethewey, Richard N.

The early stages of tuber development are characterized by cell division, high metabolic activity, and the predominance of invertase as the sucrose (Suc) cleaving activity. However, during the...

Antisense Repression of Hexokinase 1 Leads to an Overaccumulation of Starch in Leaves of Transgenic Potato Plants But Not to Significant Changes in Tuber Carbohydrate Metabolism1

Veramendi, Jon, Roessner, Ute, Renz, Andreas, Willmitzer, Lothar, Trethewey, Richard N.

Potato (Solanum tuberosum L.) plants transformed with sense and antisense constructs of a cDNA encoding the potato hexokinase 1 (StHK1) exhibited altered enzyme activities and expression of StHK1...

Production of 1-Kestose in Transgenic Yeast Expressing a Fructosyltransferase from Aspergillus foetidus

Rehm, Jochen, Willmitzer, Lothar, Heyer, Arnd G.

Sucrose-inducible secretory sucrose:sucrose 1-fructosyltransferase (1-SST) from Aspergillus foetidus has been purified and subjected to N-terminal amino acid sequence determination. The enzyme is...

Analysis of the Compartmentation of Glycolytic Intermediates, Nucleotides, Sugars, Organic Acids, Amino Acids, and Sugar Alcohols in Potato Tubers Using a Nonaqueous Fractionation Method1

Farré, Eva M., Tiessen, Axel, Roessner, Ute, Geigenberger, Peter, Trethewey, Richard N., Willmitzer, Lothar

The compartmentation of metabolism in heterotrophic plant tissues is poorly understood due to the lack of data on metabolite distributions and fluxes between subcellular organelles. The main reason...

High-Resolution Metabolic Phenotyping of Genetically and Environmentally Diverse Potato Tuber Systems. Identification of Phenocopies

Roessner, Ute, Willmitzer, Lothar, Fernie, Alisdair R.

We conducted a comprehensive metabolic phenotyping of potato (Solanum tuberosum L. cv Desiree) tuber tissue that had been modified either by transgenesis or exposure to different environmental...

Antisense Inhibition of Threonine Synthase Leads to High Methionine Content in Transgenic Potato Plants1

Zeh, Michaela, Casazza, Anna Paola, Kreft, Oliver, Roessner, Ute, Bieberich, Katrin, Willmitzer, Lothar, ...

Methionine (Met) and threonine (Thr) are members of the aspartate family of amino acids. In plants, their biosynthetic pathways diverge at the level of O-phosphohomo-serine (Ser). The enzymes...

Constitutive Expression of the β-Ketothiolase Gene in Transgenic Plants. A Major Obstacle for Obtaining Polyhydroxybutyrate-Producing Plants1

Bohmert, Karen, Balbo, Ilse, Steinbüchel, Alexander, Tischendorf, Gilbert, Willmitzer, Lothar

Polyhydroxybutyrate (PHB) is a member of a class of thermoelastic polymers called polyhydroxyalkanoates that serve many bacteria as intracellular storage molecules for carbon and energy. Transgenic...

Chimeric RNA/DNA Oligonucleotide-Based Site-Specific Modification of the Tobacco Acetolactate Syntase Gene

Kochevenko, Andrej, Willmitzer, Lothar

Single amino acid substitutions at either of two crucial positions in acetolactate synthase (ALS) result in a chlorsulfuron-insensitive form of this enzyme and, as a consequence, a...

Production of Human Papillomavirus Type 16 Virus-Like Particles in Transgenic Plants

Biemelt, Sophia, Sonnewald, Uwe, Galmbacher, Petra, Willmitzer, Lothar, Müller, Martin

Cervical cancer is linked to infection with human papillomaviruses (HPV) and is the third most common cancer among women worldwide. There is a strong demand for the development of an HPV preventive...

De Novo Amino Acid Biosynthesis in Potato Tubers Is Regulated by Sucrose Levels1[w]

Roessner-Tunali, Ute, Urbanczyk-Wochniak, Ewa, Czechowski, Tomasz, Kolbe, Anna, Willmitzer, Lothar, Fernie, Alisdair R.

Plant growth and development are strongly dependent on sink-source interactions. In the majority of plants, sucrose (Suc) is the dominant form in which photo-assimilate is transported from source to...

Abscisic acid is involved in the wound-induced expression of the proteinase inhibitor II gene in potato and tomato

Pēna-Cortés, Hugo, Sánchez-Serrano, José J., Mertens, Rüdiger, Willmitzer, Lothar, Prat, Salomé

Plants respond to wounding or pathogen attack by a variety of biochemical reactions, involving in some instances gene activation in tissues far apart from the actual site of wounding or pathogen...

Analysis of cis-active sequences involved in the leaf-specific expression of a potato gene in transgenic plants

Stockhaus, Jörg, Eckes, Peter, Rocha-Sosa, Mario, Schell, Jeff, Willmitzer, Lothar

ST-LS1 is a light-inducible, single-copy gene from potato that is expressed only in photosynthetic tissues. Various sequences derived from the 5′-upstream region of this gene were fused to the...

Both developmental and metabolic signals activate the promoter of a class I patatin gene

Rocha-Sosa, Mario, Sonnewald, Uwe, Frommer, Wolf, Stratmann, Marina, Schell, Jeff, Willmitzer, Lothar

Patatin is one of the major soluble proteins in potato tubers and is encoded by a multigene family. Based on structural considerations two classes of patatin genes are distinguished. The...

Both wound-inducible and tuber-specific expression are mediated by the promoter of a single member of the potato proteinase inhibitor II gene family

Keil, Michael, Sánchez-Serrano, Jose J., Willmitzer, Lothar

A chimeric gene consisting of 1.3 kb of the 5' regulatory region of a member of the potato proteinase inhibitor II gene family, the coding region of the bacterial β-glucuronidase (GUS) gene and 260...

The TL-DNA in octopine crown-gall tumours codes for seven well-defined polyadenylated transcripts

Willmitzer, Lothar, Simons, Gisela, Schell, Jeff

Seven polyadenylated transcripts of significantly different relative abundance were detected in octopine crown-gall tissue after gel electrophoretic separation and subsequent transfer to...

Wound-induced expression of a potato proteinase inhibitor II gene in transgenic tobacco plants

Sanchez-Serrano, Jose J., Keil, Michael, O'Connor, Aileen, Schell, Jeff, Willmitzer, Lothar

A potato proteinase inhibitor II gene was transferred into tobacco plants using Agrobacterium/Ti-plasmid-mediated gene transfer techniques. Whereas no or little expression of the proteinase inhibitor...

Apoplastic Expression of Yeast-Derived Invertase in Potato 1: Effects on Photosynthesis, Leaf Solute Composition, Water Relations, and Tuber Composition

Heineke, Dieter, Sonnewald, Uwe, Büssis, Dirk, Günter, Gundula, Leidreiter, Kirsten, Wilke, Ingo, ...

In potato plants (Solanum tuberosum), a chimeric yeast-derived invertase gene fused to a 35S cauliflower mosaic virus promoter has been expressed. The protein was targeted to the cell wall by using...

Parallel analysis of transcript and metabolic profiles: a new approach in systems biology

Urbanczyk-Wochniak, Ewa, Luedemann, Alexander, Kopka, Joachim, Selbig, Joachim, Roessner-Tunali, Ute, Willmitzer, Lothar, ...

The past few years in the medical and biological sciences have been characterized by the advent of systems biology. However, despite the well-known connectivity between the molecules described by...

Transgenic potato (Solanum tuberosum) tubers synthesize the full spectrum of inulin molecules naturally occurring in globe artichoke (Cynara scolymus) roots

Hellwege, Elke M., Czapla, Sylvia, Jahnke, Anuschka, Willmitzer, Lothar, Heyer, Arnd G.

The ability to synthesize high molecular weight inulin was transferred to potato plants via constitutive expression of the 1-SST (sucrose:sucrose 1-fructosyltransferase) and the 1-FFT (fructan:...

Electric Signaling and Pin2 Gene Expression on Different Abiotic Stimuli Depend on a Distinct Threshold Level of Endogenous Abscisic Acid in Several Abscisic Acid-Deficient Tomato Mutants1

Herde, Oliver, Peña Cortés, Hugo, Wasternack, Claus, Willmitzer, Lothar, Fisahn, Joachim

Experiments were performed on three abscisic acid (ABA)-deficient tomato (Lycopersicon esculentum Mill.) mutants, notabilis, flacca, and sitiens, to investigate the role of ABA and jasmonic acid (JA)...

A Possible Role for Pyrophosphate in the Coordination of Cytosolic and Plastidial Carbon Metabolism within the Potato Tuber1

Farré, Eva M., Geigenberger, Peter, Willmitzer, Lothar, Trethewey, Richard N.

The early stages of tuber development are characterized by cell division, high metabolic activity, and the predominance of invertase as the sucrose (Suc) cleaving activity. However, during the...

Antisense Repression of Hexokinase 1 Leads to an Overaccumulation of Starch in Leaves of Transgenic Potato Plants But Not to Significant Changes in Tuber Carbohydrate Metabolism1

Veramendi, Jon, Roessner, Ute, Renz, Andreas, Willmitzer, Lothar, Trethewey, Richard N.

Potato (Solanum tuberosum L.) plants transformed with sense and antisense constructs of a cDNA encoding the potato hexokinase 1 (StHK1) exhibited altered enzyme activities and expression of StHK1...

Production of 1-Kestose in Transgenic Yeast Expressing a Fructosyltransferase from Aspergillus foetidus

Rehm, Jochen, Willmitzer, Lothar, Heyer, Arnd G.

Sucrose-inducible secretory sucrose:sucrose 1-fructosyltransferase (1-SST) from Aspergillus foetidus has been purified and subjected to N-terminal amino acid sequence determination. The enzyme is...

Analysis of the Compartmentation of Glycolytic Intermediates, Nucleotides, Sugars, Organic Acids, Amino Acids, and Sugar Alcohols in Potato Tubers Using a Nonaqueous Fractionation Method1

Farré, Eva M., Tiessen, Axel, Roessner, Ute, Geigenberger, Peter, Trethewey, Richard N., Willmitzer, Lothar

The compartmentation of metabolism in heterotrophic plant tissues is poorly understood due to the lack of data on metabolite distributions and fluxes between subcellular organelles. The main reason...

High-Resolution Metabolic Phenotyping of Genetically and Environmentally Diverse Potato Tuber Systems. Identification of Phenocopies

Roessner, Ute, Willmitzer, Lothar, Fernie, Alisdair R.

We conducted a comprehensive metabolic phenotyping of potato (Solanum tuberosum L. cv Desiree) tuber tissue that had been modified either by transgenesis or exposure to different environmental...

Antisense Inhibition of Threonine Synthase Leads to High Methionine Content in Transgenic Potato Plants1

Zeh, Michaela, Casazza, Anna Paola, Kreft, Oliver, Roessner, Ute, Bieberich, Katrin, Willmitzer, Lothar, ...

Methionine (Met) and threonine (Thr) are members of the aspartate family of amino acids. In plants, their biosynthetic pathways diverge at the level of O-phosphohomo-serine (Ser). The enzymes...

Constitutive Expression of the β-Ketothiolase Gene in Transgenic Plants. A Major Obstacle for Obtaining Polyhydroxybutyrate-Producing Plants1

Bohmert, Karen, Balbo, Ilse, Steinbüchel, Alexander, Tischendorf, Gilbert, Willmitzer, Lothar

Polyhydroxybutyrate (PHB) is a member of a class of thermoelastic polymers called polyhydroxyalkanoates that serve many bacteria as intracellular storage molecules for carbon and energy. Transgenic...

Chimeric RNA/DNA Oligonucleotide-Based Site-Specific Modification of the Tobacco Acetolactate Syntase Gene

Kochevenko, Andrej, Willmitzer, Lothar

Single amino acid substitutions at either of two crucial positions in acetolactate synthase (ALS) result in a chlorsulfuron-insensitive form of this enzyme and, as a consequence, a...

Production of Human Papillomavirus Type 16 Virus-Like Particles in Transgenic Plants

Biemelt, Sophia, Sonnewald, Uwe, Galmbacher, Petra, Willmitzer, Lothar, Müller, Martin

Cervical cancer is linked to infection with human papillomaviruses (HPV) and is the third most common cancer among women worldwide. There is a strong demand for the development of an HPV preventive...

De Novo Amino Acid Biosynthesis in Potato Tubers Is Regulated by Sucrose Levels1[w]

Roessner-Tunali, Ute, Urbanczyk-Wochniak, Ewa, Czechowski, Tomasz, Kolbe, Anna, Willmitzer, Lothar, Fernie, Alisdair R.

Plant growth and development are strongly dependent on sink-source interactions. In the majority of plants, sucrose (Suc) is the dominant form in which photo-assimilate is transported from source to...

Abscisic acid is involved in the wound-induced expression of the proteinase inhibitor II gene in potato and tomato

Pēna-Cortés, Hugo, Sánchez-Serrano, José J., Mertens, Rüdiger, Willmitzer, Lothar, Prat, Salomé

Plants respond to wounding or pathogen attack by a variety of biochemical reactions, involving in some instances gene activation in tissues far apart from the actual site of wounding or pathogen...

Analysis of cis-active sequences involved in the leaf-specific expression of a potato gene in transgenic plants

Stockhaus, Jörg, Eckes, Peter, Rocha-Sosa, Mario, Schell, Jeff, Willmitzer, Lothar

ST-LS1 is a light-inducible, single-copy gene from potato that is expressed only in photosynthetic tissues. Various sequences derived from the 5′-upstream region of this gene were fused to the...

Both developmental and metabolic signals activate the promoter of a class I patatin gene

Rocha-Sosa, Mario, Sonnewald, Uwe, Frommer, Wolf, Stratmann, Marina, Schell, Jeff, Willmitzer, Lothar

Patatin is one of the major soluble proteins in potato tubers and is encoded by a multigene family. Based on structural considerations two classes of patatin genes are distinguished. The...

Both wound-inducible and tuber-specific expression are mediated by the promoter of a single member of the potato proteinase inhibitor II gene family

Keil, Michael, Sánchez-Serrano, Jose J., Willmitzer, Lothar

A chimeric gene consisting of 1.3 kb of the 5' regulatory region of a member of the potato proteinase inhibitor II gene family, the coding region of the bacterial β-glucuronidase (GUS) gene and 260...

The TL-DNA in octopine crown-gall tumours codes for seven well-defined polyadenylated transcripts

Willmitzer, Lothar, Simons, Gisela, Schell, Jeff

Seven polyadenylated transcripts of significantly different relative abundance were detected in octopine crown-gall tissue after gel electrophoretic separation and subsequent transfer to...

Wound-induced expression of a potato proteinase inhibitor II gene in transgenic tobacco plants

Sanchez-Serrano, Jose J., Keil, Michael, O'Connor, Aileen, Schell, Jeff, Willmitzer, Lothar

A potato proteinase inhibitor II gene was transferred into tobacco plants using Agrobacterium/Ti-plasmid-mediated gene transfer techniques. Whereas no or little expression of the proteinase inhibitor...

Apoplastic Expression of Yeast-Derived Invertase in Potato 1: Effects on Photosynthesis, Leaf Solute Composition, Water Relations, and Tuber Composition

Heineke, Dieter, Sonnewald, Uwe, Büssis, Dirk, Günter, Gundula, Leidreiter, Kirsten, Wilke, Ingo, ...

In potato plants (Solanum tuberosum), a chimeric yeast-derived invertase gene fused to a 35S cauliflower mosaic virus promoter has been expressed. The protein was targeted to the cell wall by using...

Parallel analysis of transcript and metabolic profiles: a new approach in systems biology

Urbanczyk-Wochniak, Ewa, Luedemann, Alexander, Kopka, Joachim, Selbig, Joachim, Roessner-Tunali, Ute, Willmitzer, Lothar, ...

The past few years in the medical and biological sciences have been characterized by the advent of systems biology. However, despite the well-known connectivity between the molecules described by...

The metabolic signature related to high plant growth rate in Arabidopsis thaliana

Meyer, Rhonda C., Steinfath, Matthias, Lisec, Jan, Becher, Martina, Witucka-Wall, Hanna, Törjék, Ottó, ...

The decline of available fossil fuel reserves has triggered world-wide efforts to develop alternative energy sources based on plant biomass. Detailed knowledge of the relations of metabolism and...

Identification of metabolic and biomass QTL in Arabidopsis thaliana in a parallel analysis of RIL and IL populations

Lisec, Jan, Meyer, Rhonda C, Steinfath, Matthias, Redestig, Henning, Becher, Martina, Witucka-Wall, Hanna, ...

Plant growth and development are tightly linked to primary metabolism and are subject to natural variation. In order to obtain an insight into the genetic factors controlling biomass and primary...

Analysis of subcellular metabolite levels of potato tubers (Solanum tuberosum) displaying alterations in cellular or extracellular sucrose metabolism

Farre, Eva M., Fernie, Alisdair R., Willmitzer, Lothar

The expression of a heterologous invertase in potato tubers (Solanum tuberosum) in either the cytosol or apoplast leads to a decrease in total sucrose content and to an increase in glucose. Depending...

The Nematode Resistance Allele at the rhg1 Locus Alters the Proteome and Primary Metabolism of Soybean Roots1[C][W][OA]

Afzal, Ahmed J., Natarajan, Aparna, Saini, Navinder, Iqbal, M. Javed, Geisler, Matt, El Shemy, Hany A., ...

Heterodera glycines, the soybean cyst nematode (SCN), causes the most damaging chronic disease of soybean (Glycine max). Host resistance requires the resistance allele at rhg1. Resistance destroys...

Prediction of hybrid biomass in Arabidopsis thaliana by selected parental SNP and metabolic markers

Steinfath, Matthias, Gärtner, Tanja, Lisec, Jan, Meyer, Rhonda C., Altmann, Thomas, Willmitzer, Lothar, ...

A recombinant inbred line (RIL) population, derived from two Arabidopsis thaliana accessions, and the corresponding testcrosses with these two original accessions were used for the development and...

QTL analysis of early stage heterosis for biomass in Arabidopsis

Meyer, Rhonda Christiane, Kusterer, Barbara, Lisec, Jan, Steinfath, Matthias, Becher, Martina, Scharr, Hanno, ...

The main objective of this study was to identify genomic regions involved in biomass heterosis using QTL, generation means, and mode-of-inheritance classification analyses. In a modified North...