Search Results - "Van Onckelen, Henri"

Dynamics of Cytokinins in Apical Shoot Meristems of a Day-Neutral Tobacco during Floral Transition and Flower Formation by Dewitte, Walter, Adriana Chiappetta, Azmi, Abdelkrim, Witters, Erwin, Strnad, Miroslav, Jacques Rembur, Michelle Noin, Chriqui, Dominique, Henri Van Onckelen

“…This study considered cytokinin distribution in tobacco (Nicotiana tabacum L.) shoot apices in distinct phases of development using immunocytochemistry and…”
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Micro and capillary liquid chromatography–tandem mass spectrometry: a new dimension in phytohormone research by Prinsen, Els, Van Dongen, Walter, Esmans, Eddy L, Van Onckelen, Henri A

“…Quantification of phytohormones in small amounts of material requires sensitive analytical techniques. The analysis of indoles and cytokinins using…”
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Extraction and quantitative analysis of 1-aminocyclopropane-1-carboxylic acid in plant tissue by gas chromatography coupled to mass spectrometry by Smets, Rafaël, Claes, Veerle, Van Onckelen, Henri A, Prinsen, Els

“…We developed a new method for the determination of the ethylene precursor 1-aminocyclopropane-1-carboxylic acid (ACC) using quantitative GC–negative chemical…”
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Cytokinin-induced hypocotyl elongation in light-grown Arabidopsis plants with inhibited ethylene action or indole-3-acetic acid transport by Smets, R, Le, J, Verbelen, J.P, Onckelen, H.A. van

“…Cytokinins inhibit hypocotyl elongation in darkness but have no obvious effect on hypocotyl length in the light. However, we found that cytokinins do promote…”
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Resistance of Transgenic Tobacco Seedlings Expressing the Agrobacterium tumefaciens C58-6b Gene, to Growth-Inhibitory Levels of Cytokinin is Associated with Elevated IAA Levels and Activation of Phenylpropanoid Metabolism by Gális, Ivan, Šimek, Petr, Van Onckelen, Henri A., Kakiuchi, Yasutaka, Wabiko, Hiroetsu

“…We previously reported that the Agrobacterium tumefaciens C58-6b gene confers resistance to growth-inhibitory levels of exogenously applied N6-benzyladenine…”
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Quantitative analysis of 1-aminocyclopropane-1-carboxylic acid by liquid chromatography coupled to electrospray tandem mass spectrometry by Chauvaux, Nancy, Van Dongen, Walter, Esmans, Eddy L, Van Onckelen, Henri A

“…Liquid chromatography coupled to electrospray tandem mass spectrometry was investigated as a method for the analysis of 1-aminocyclopropane-1-carboxylic acid…”
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Dynamics of Cytokinins in Apical Shoot Meristems of a Day-Neutral Tobacco during Floral Transition and Flower Formation1 by Dewitte, Walter, Chiappetta, Adriana, Azmi, Abdelkrim, Witters, Erwin, Strnad, Miroslav, Rembur, Jacques, Noin, Michelle, Chriqui, Dominique, Van Onckelen, Henri

“…This study considered cytokinin distribution in tobacco (Nicotiana tabacum L.) shoot apices in distinct phases of development using immunocytochemistry and…”
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The Agrobacterium tumefaciens C58-6b gene confers resistance to N 6 -benzyladenine without modifying cytokinin metabolism in tobacco seedlings by Gális, Ivan, Šimek, Petr, Macas, Jiří, Zahradníčková, Helena, Vlasák, Josef, Wabiko, Hiroetsu, Van Dongen, Walter, Van Onckelen, Henri A., Ondřej, Miloš

“…The 6b gene of Agrobacterium tumefaciens has been demonstrated to modify the activity of the plant growth regulators, auxin and cytokinin. To study the…”
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Ion-pair liquid chromatography–electrospray mass spectrometry for the analysis of cyclic nucleotides by Witters, Erwin, Van Dongen, Walter, Esmans, Eddy L, Van Onckelen, Henri A

“…An LC–MS method has been developed combining ion-pair chromatography with an electrospray interface linking microbore and capillary HPLC to mass spectrometry…”
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HPLC Linked Electrospray Tandem Mass Spectrometry: A Rapid and Reliable Method to Analyse Indole-3-Acetic Acid Metabolism in Bacteria by Prinsen, Els, Van Dongen, Walter, Esmans, Eddy L., Van Onckelen, Henri A.

“…Electrospray tandem mass spectrometry in combination with high‐performance liquid chromatography can be used for the simultaneous detection and quantification…”
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Precociously germinating somatic embryos of Vitis vinifera have lower ABA and IAA levels than their germinating zygotic counterparts by Faure, O. (J. Monnet Univ., St. Etienne (France)), Dewitte, W, Nougarede, A, Onckelen, H. Van

“…Somatic embryos of Vitis vinifera (cv. Grenache noir) develop normally up to the torpedo stage, but they germinate precociously and form viable plantlets with…”
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Quantitation of Cyclic Nucleotides in Biological Samples by Negative Electrospray Tandem Mass Spectrometry Coupled to Ion Suppression Liquid Chromatography by Witters, Erwin, Roef, Luc, Newton, Russell P., Van Dongen, Walter, Esmans, Eddy L., Van Onckelen, Henri A.

“…Measurement of cyclic nucleotides by electrospray ionization mass spectrometry constitutes an unequivocal quantitative and qualitative technique superior to…”
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Analysis of cyclic nucleotides and cytokinins in minute plant samples using phase-system switching capillary electrospray-liquid chromatography-tandem mass spectrometry by Witters, Erwin, Vanhoutte, Koen, Dewitte, Walter, Machácková, Ivana, Benková, Eva, Van Dongen, Walter, Esmans, Eddy L., Van Onckelen, Henri A.

“…Using an electrospray tandem mass spectrometer as a concentration‐sensitive detector, a method has been developed to quantify femtomole amounts of plant growth…”
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Regulation of cytokinin oxidase activity in tobacco callus expressing the T-DNA ipt gene by Redig, P, Motyka, V, Onckelen, H.A. van, Kaminek, M

“…Abstract only…”
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Relationship of ribonucleic acid metabolism in embryo and aleurone to alpha-amylase synthesis in barley by Onckelen, H.A. van, Verbeek, R, Khan, A.A

“…RNA metabolism of embryo and aleurone of barley grains (Hordeum vulgare L. cv. Himalaya) was studied to elucidate the role of these tissues in the control of…”
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Morphometric Analysis of the Growth of Phsp70-ipt Transgenic Tobacco Plants by LOVEN, KAREN VAN, BEINSBERGER, SUSY E. I., VALCKE, ROLAND L. M., VAN ONCKELEN, HENRI A., CLIJSTERS, HERMAN M. M.

“…The effect of introducing a supplementary ipt-gene into the genome of Nicotiona tabacum L. cv. Petit Havana SR 1 is studied on the morphological plant…”
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The agrobacterium tumefaciens C58-6b gene confers resistance to N(6)-benzyladenine without modifying cytokinin metabolism in tobacco seedlings by Galis, I, I, Simek, P, Macas, J, Zahradnickova, H, Vlasak, J, Wabiko, H, Van Dongen W, Van Onckelen HA, Ondrej, M

“…The 6b gene of Agrobacterium tumefaciens has been demonstrated to modify the activity of the plant growth regulators, auxin and cytokinin. To study the…”
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Analysis of 3′,5′-cAMP and Adenylyl Cyclase Activity in Higher Plants Using Polyclonal Chicken Egg Yolk Antibodies by Roef, Luc, Witters, Erwin, Gadeyne, Judith, Marcussen, Jan, Newton, Russell P., Van Onckelen, Henri A.

“…Polyclonal antibodies were raised in chicken against an adenosine 3′,5′-monophosphate–diphtheria toxoid antigen construct. The antibodies obtained show…”
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Regulation of cytokinin oxidase activity in tobacco callus expressing the T-DNA ipt gene by Redig, Pascale, Motyka, Václav, Van Onckelen, Henri A., Kamínek, Miroslav

“…There are indications that the cytokinin content in transgenic tissues expressing the cytokinin biosynthetic ipt gene is under metabolic control, which…”
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Morphometric Analysis of the Growth of Phsp70-ipt Transgenic Tobacco Plants by VAN LOVEN, KAREN, BEINSBERGER, SUSY E. L., VALCKE, ROLAND L. M., VAN ONCKELEN, HENRI A., CLIJSTERS, HERMAN M. M.

“…The effect of introducing a supplementary ipt-gene into the genome of Nicotiana tabacum L. cv. Petit Havana SR1 is studied on the morphological plant…”
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