Works matching AU ROLLETSCHEK, HARDY

Results: 75

Integrating Data from Biological Experiments into Metabolic Networks with the DBE Information System.

Published in:

In Silico Biology, 2005, v. 5, n. 2, p. 93

By:

Borisjuk, Ljudmilla;
Hajirezaei, Mohammad-Reza;
Klukas, Christian;
Rolletschek, Hardy;
Schreiber, Falk

Publication type:

Article

Low oxygen sensing and balancing in plant seeds: a role for nitric oxide.

Published in:

New Phytologist, 2007, v. 176, n. 4, p. 813, doi. 10.1111/j.1469-8137.2007.02226.x

By:

Borisjuk, Ljudmilla;
Macherel, David;
Benamar, Abdelilah;
Wobus, Ulrich;
Rolletschek, Hardy

Publication type:

Article

Evidence of a key role for photosynthetic oxygen release in oil storage in developing soybean seeds.

Published in:

New Phytologist, 2005, v. 167, n. 3, p. 777, doi. 10.1111/j.1469-8137.2005.01473.x

By:

Rolletschek, Hardy;
Radchuk, Ruslana;
Klukas, Christian;
Schreiber, Falk;
Wobus, Ulrich;
Borisjuk, Ljudmilla

Publication type:

Article

Gradients of lipid storage, photosynthesis and plastid differentiation in developing soybean seeds.

Published in:

New Phytologist, 2005, v. 167, n. 3, p. 761, doi. 10.1111/j.1469-8137.2005.01474.x

By:

Borisjuk, Ljudmilla;
Nguyen, Thuy Ha;
Neuberger, Thomas;
Rutten, Twan;
Tschiersch, Henning;
Claus, Bernhard;
Feussner, Ivo;
Webb, Andrew G.;
Jakob, Peter;
Weber, Hans;
Wobus, Ulrich;
Rolletschek, Hardy

Publication type:

Article

Effects of salinity and convective rhizome ventilation on amino acid and carbohydrate patterns of Phragmites australis populations in the Neusiedler See region of Austria and Hungary.

Published in:

New Phytologist, 2000, v. 146, n. 1, p. 95, doi. 10.1046/j.1469-8137.2000.00608.x

By:

Rolletschek, Hardy;
Hartzendorf, Thomas

Publication type:

Article

Antisense-inhibition of ADP-glucose pyrophosphorylase in Vicia narbonensis seeds increases soluble sugars and leads to higher water and nitrogen uptake.

Published in:

Planta: An International Journal of Plant Biology, 2002, v. 214, n. 6, p. 954, doi. 10.1007/s00425-001-0710-4

By:

Rolletschek, Hardy;
Hajirezaei, Mohammad-Reza;
Wobus, Ulrich;
Weber, Hans

Publication type:

Article

Gradients of nutrients, dissolved oxygen and sulfide in wave-protected and unsheltered stands of Phragmites australis.

Published in:

International Review of Hydrobiology, 1997, v. 82, n. 3, p. 329, doi. 10.1002/iroh.19970820305

By:

Rolletschek, Hardy

Publication type:

Article

Cellular Plasticity in Response to Suppression of Storage Proteins in the Brassica napus Embryo[OPEN].

Published in:

Plant Cell, 2020, v. 32, n. 7, p. 2383, doi. 10.1105/tpc.19.00879

By:

Rolletschek, Hardy;
Schwender, Jörg;
König, Christina;
Chapman, Kent D.;
Romsdahl, Trevor;
Lorenz, Christin;
Braun, Hans-Peter;
Denolf, Peter;
Audenhove, Katrien Van;
Munz, Eberhard;
Heinzel, Nicolas;
Ortleb, Stefan;
Rutten, Twan;
McCorkle, Sean;
Borysyuk, Taras;
Guendel, André;
Shi, Hai;
Auwermeulen, Michiel Vander;
Bourot, Stephane;
1, Ljudmilla Borisjuk

Publication type:

Article

Seed Architecture Shapes Embryo Metabolism in Oilseed Rape.

Published in:

Plant Cell, 2013, v. 25, n. 5, p. 1625, doi. 10.1105/tpc.113.111740

By:

Borisjuk, Ljudmilla;
Neuberger, Thomas;
Schwender, Jörg;
Heinzel, Nicolas;
Sunderhaus, Stephanie;
Fuchs, Johannes;
Hay, Jordan O.;
Tschiersch, Henning;
Braun, Hans-Peter;
Denolf, Peter;
Lambert, Bart;
Jakob, Peter M.;
Rolletschek, Hardy

Publication type:

Article

Combined Noninvasive Imaging and Modeling Approaches Reveal Metabolic Compartmentation in the Barley Endosperm.

Published in:

Plant Cell, 2011, v. 23, n. 8, p. 3041, doi. 10.1105/tpc.111.087015

By:

Rolletschek, Hardy;
Melkus, Gerd;
Grafahrend-Belau, Eva;
Fuchs, Johannes;
Heinzel, Nicolas;
Schreiber, Falk;
Jakob, Peter M.;
Borisjuk, Ljudmilla

Publication type:

Article

The Role of Persulfide Metabolism During Arabidopsis Seed Development Under Light and Dark Conditions.

Published in:

Frontiers in Plant Science, 2018, p. N.PAG, doi. 10.3389/fpls.2018.01381

By:

Lorenz, Christin;
Brandt, Saskia;
Borisjuk, Ljudmilla;
Rolletschek, Hardy;
Heinzel, Nicolas;
Tohge, Takayuki;
Fernie, Alisdair R.;
Braun, Hans-Peter;
Hildebrandt, Tatjana M.

Publication type:

Article

Jasmonates-Mediated Rewiring of Central Metabolism Regulates Adaptive Responses.

Published in:

Plant & Cell Physiology, 2019, v. 60, n. 12, p. 2613, doi. 10.1093/pcp/pcz181

By:

Savchenko, Tatyana V;
Rolletschek, Hardy;
Dehesh, Katayoon

Publication type:

Article

Mechanical forces orchestrate the metabolism of the developing oilseed rape embryo.

Published in:

New Phytologist, 2024, v. 244, n. 4, p. 1328, doi. 10.1111/nph.19990

By:

Rolletschek, Hardy;
Muszynska, Aleksandra;
Schwender, Jörg;
Radchuk, Volodymyr;
Heinemann, Björn;
Hilo, Alexander;
Plutenko, Iaroslav;
Keil, Peter;
Ortleb, Stefan;
Wagner, Steffen;
Kalms, Laura;
Gündel, André;
Shi, Hai;
Fuchs, Jörg;
Szymanski, Jedrzej Jakub;
Braun, Hans‐Peter;
Borisjuk, Ljudmilla

Publication type:

Article

Wheat Grains as a Sustainable Source of Protein for Health.

Published in:

Nutrients, 2023, v. 15, n. 20, p. 4398, doi. 10.3390/nu15204398

By:

Alomari, Dalia Z.;
Schierenbeck, Matías;
Alqudah, Ahmad M.;
Alqahtani, Mashael Daghash;
Wagner, Steffen;
Rolletschek, Hardy;
Borisjuk, Ljudmilla;
Röder, Marion S.

Publication type:

Article

A novel procedure for the quantitative analysis of metabolites, storage products and transcripts of laser microdissected seed tissues of Brassica napus.

Published in:

Plant Methods, 2011, v. 7, n. 1, p. 19, doi. 10.1186/1746-4811-7-19

By:

Schiebold, Silke;
Tschiersch, Henning;
Borisjuk, Ljudmilla;
Heinzel, Nicolas;
Radchuk, Ruslana;
Rolletschek, Hardy

Publication type:

Article

Influence of oxygen deficiency and the role of specific amino acids in cryopreservation of garlic shoot tips.

Published in:

BMC Biotechnology, 2015, v. 15, n. 1, p. 1, doi. 10.1186/s12896-015-0171-7

By:

Subbarayan, Karthikeyan;
Rolletschek, Hardy;
Senula, Angelika;
Ulagappan, Kamatchi;
Hajirezaei, Mohammad-Reza;
Keller, E. R. Joachim

Publication type:

Article

Antisense inhibition of the plastidial glucose-6-phosphate/phosphate translocator in Vicia seeds shifts cellular differentiation and promotes protein storage.

Published in:

Plant Journal, 2007, v. 51, n. 3, p. 468, doi. 10.1111/j.1365-313X.2007.03155.x

By:

Rolletschek, Hardy;
Nguyen, Thuy H.;
Häusler, Rainer E.;
Rutten, Twan;
Göbel, Cornelia;
Feussner, Ivo;
Radchuk, Ruslana;
Tewes, Annegret;
Claus, Bernhard;
Klukas, Christian;
Linemann, Ute;
Weber, Hans;
Wobus, Ulrich;
Borisjuk, Ljudmilla

Publication type:

Article

Positional cues for the starch/lipid balance in maize kernels and resource partitioning to the embryo.

Published in:

Plant Journal, 2005, v. 42, n. 1, p. 69, doi. 10.1111/j.1365-313X.2005.02352.x

By:

Rolletschek, Hardy;
Koch, Karen;
Wobus, Ulrich;
Borisjuk, Ljudmilla

Publication type:

Article

Energy status and its control on embryogenesis of legumes: ATP distribution within Vicia faba embryos is developmentally regulated and correlated with photosynthetic capacity.

Published in:

Plant Journal, 2003, v. 36, n. 3, p. 318, doi. 10.1046/j.1365-313X.2003.01879.x

By:

Borisjuk, Ljudmila;
Rolletschek, Hardy;
Walenta, Stefan;
Panitz, Reinhard;
Wobus, Ulrich;
Weber, Hans

Publication type:

Article

Spatial analysis of plant metabolism: Sucrose imaging within Vicia faba cotyledons reveals specific developmental patterns.

Published in:

Plant Journal, 2002, v. 29, n. 4, p. 521, doi. 10.1046/j.1365-313x.2002.01222.x

By:

Borisjuk, Ljudmilla;
Walenta, Stefan;
Rolletschek, Hardy;
Mueller-Klieser, Wolfgang;
Wobus, Ulrich;
Weber, Hans

Publication type:

Article

Antisense-inhibition of ADP-glucose pyrophosphorylase in developing seeds of Vicia narbonensis moderately decreases starch but increases protein content and affects seed maturation.

Published in:

Plant Journal, 2000, v. 24, n. 1, p. 33, doi. 10.1046/j.1365-313x.2000.00853.x

By:

Weber, Hans;
Rolletschek, Hardy;
Heim, Ute;
Golombek, Sabine;
Gubatz, Sabine;
Wobus, Ulrich

Publication type:

Article

Methodology and Significance of Microsensor-based Oxygen Mapping in Plant Seeds - an Overview.

Published in:

Sensors (14248220), 2009, v. 9, n. 5, p. 3218, doi. 10.3390/s90503218

By:

Rolletschek, Hardy;
Stangelmayer, Achim;
Borisjuk, Ljudmilla

Publication type:

Article

Identification of quantitative trait loci contributing to yield and seed quality parameters under terminal drought in barley advanced backcross lines.

Published in:

Molecular Breeding, 2013, v. 32, n. 1, p. 71, doi. 10.1007/s11032-013-9853-9

By:

Kalladan, Rajesh;
Worch, Sebastian;
Rolletschek, Hardy;
Harshavardhan, Vokkaliga;
Kuntze, Lissy;
Seiler, Christiane;
Sreenivasulu, Nese;
Röder, Marion

Publication type:

Article

Physiological consequences of mowing and burning of Phragmites australisstands for rhizome ventilation and amino acid metabolism.

Published in:

Wetlands Ecology & Management, 2000, v. 8, n. 6, p. 425, doi. 10.1023/A:1026562002388

By:

Rolletschek, Hardy;
Rolletschek, Alexandra;
Hartzendorf, Thomas;
Kohl, Johannes-Günter

Publication type:

Article

A novel noninvasive procedure for high-throughput screening of major seed traits.

Published in:

Plant Biotechnology Journal, 2015, v. 13, n. 2, p. 188, doi. 10.1111/pbi.12245

By:

Rolletschek, Hardy;
Fuchs, Johannes;
Friedel, Svetlana;
Börner, Andreas;
Todt, Harald;
Jakob, Peter M.;
Borisjuk, Ljudmilla

Publication type:

Article

Dynamic 13C/1H NMR imaging uncovers sugar allocation in the living seed.

Published in:

Plant Biotechnology Journal, 2011, v. 9, n. 9, p. 1022, doi. 10.1111/j.1467-7652.2011.00618.x

By:

Melkus, Gerd;
Rolletschek, Hardy;
Fuchs, Johannes;
Radchuk, Volodymyr;
Grafahrend‐Belau, Eva;
Sreenivasulu, Nese;
Rutten, Twan;
Weier, Diana;
Heinzel, Nicolas;
Schreiber, Falk;
Altmann, Thomas;
Jakob, Peter M;
Borisjuk, Ljudmilla

Publication type:

Article

Quantitative imaging of oil storage in developing crop seeds.

Published in:

Plant Biotechnology Journal, 2008, v. 6, n. 1, p. 31, doi. 10.1111/j.1467-7652.2007.00294.x

By:

Neuberger, Thomas;
Sreenivasulu, Nese;
Rokitta, Markus;
Rolletschek, Hardy;
Göbel, Cornelia;
Rutten, Twan;
Radchuk, Volodja;
Feussner, Ivo;
Wobus, Ulrich;
Jakob, Peter;
Webb, Andrew;
Borisjuk, Ljudmilla

Publication type:

Article

Seed-specific expression of a bacterial phosphoenolpyruvate carboxylase in Vicia narbonensis increases protein content and improves carbon economy.

Published in:

Plant Biotechnology Journal, 2004, v. 2, n. 3, p. 211, doi. 10.1111/j.1467-7652.2004.00064.x

By:

Rolletschek, Hardy;
Borisjuk, Ljudmilla;
Radchuk, Ruslana;
Miranda, Manoela;
Heim, Ute;
Wobus, Ulrich;
Weber, Hans

Publication type:

Article

Adaptation Strategies of Halophytic Barley Hordeum marinum ssp. marinum to High Salinity and Osmotic Stress.

Published in:

International Journal of Molecular Sciences, 2020, v. 21, n. 23, p. 9019, doi. 10.3390/ijms21239019

By:

Isayenkov, Stanislav;
Hilo, Alexander;
Rizzo, Paride;
Tandron Moya, Yudelsy Antonia;
Rolletschek, Hardy;
Borisjuk, Ljudmilla;
Radchuk, Volodymyr

Publication type:

Article

Mechanisms of metabolic adaptation in the duckweed Lemna gibba: an integrated metabolic, transcriptomic and flux analysis.

Published in:

BMC Plant Biology, 2023, v. 23, n. 1, p. 1, doi. 10.1186/s12870-023-04480-9

By:

Shi, Hai;
Ernst, Evan;
Heinzel, Nicolas;
McCorkle, Sean;
Rolletschek, Hardy;
Borisjuk, Ljudmilla;
Ortleb, Stefan;
Martienssen, Robert;
Shanklin, John;
Schwender, Jorg

Publication type:

Article

A mechanistic view on lodging resistance in rye and wheat: a multiscale comparative study.

Published in:

Plant Biotechnology Journal, 2021, v. 19, n. 12, p. 2646, doi. 10.1111/pbi.13689

By:

Muszynska, Aleksandra;
Guendel, Andre;
Melzer, Michael;
Tandron Moya, Yudelsy Antonia;
Röder, Marion S.;
Rolletschek, Hardy;
Rutten, Twan;
Munz, Eberhard;
Melz, Gilbert;
Ortleb, Stefan;
Borisjuk, Ljudmilla;
Börner, Andreas

Publication type:

Article

CRISPR/Cas9-Mediated Knockout of Galactinol Synthase-Encoding Genes Reduces Raffinose Family Oligosaccharide Levels in Soybean Seeds.

Published in:

Frontiers in Plant Science, 2020, v. 11, p. N.PAG, doi. 10.3389/fpls.2020.612942

By:

Le, Huy;
Nguyen, Nhung Hong;
Ta, Dong Thị;
Le, Thao Nhu Thi;
Bui, Thao Phuong;
Le, Ngoc Thu;
Nguyen, Cuong Xuan;
Rolletschek, Hardy;
Stacey, Gary;
Stacey, Minviluz G.;
Pham, Ngoc Bich;
Do, Phat Tien;
Chu, Ha Hoang

Publication type:

Article

Assessment of Pollen Viability for Wheat.

Published in:

Frontiers in Plant Science, 2020, v. 10, p. 1, doi. 10.3389/fpls.2019.01588

By:

Impe, Daniela;
Reitz, Janka;
Köpnick, Claudia;
Rolletschek, Hardy;
Börner, Andreas;
Senula, Angelika;
Nagel, Manuela

Publication type:

Article

MRI-Seed-Wizard: combining deep learning algorithms with magnetic resonance imaging enables advanced seed phenotyping.

Published in:

Journal of Experimental Botany, 2025, v. 76, n. 2, p. 393, doi. 10.1093/jxb/erae408

By:

Plutenko, Iaroslav;
Radchuk, Volodymyr;
Mayer, Simon;
Keil, Peter;
Ortleb, Stefan;
Wagner, Steffen;
Lehmann, Volker;
Rolletschek, Hardy;
Borisjuk, Ljudmilla

Publication type:

Article

Waterlogging tolerance rendered by oxylipin-mediated metabolic reprogramming in Arabidopsis.

Published in:

Journal of Experimental Botany, 2019, v. 70, n. 10, p. 2919, doi. 10.1093/jxb/erz110

By:

Savchenko, Tatyana;
Rolletschek, Hardy;
Heinzel, Nicolas;
Tikhonov, Konstantin;
Dehesh, Katayoon

Publication type:

Article

Low and High Field Magnetic Resonance for in Vivo Analysis of Seeds.

Published in:

Materials (1996-1944), 2011, v. 4, n. 8, p. 1426, doi. 10.3390/ma4081426

By:

Borisjuk, Ljudmilla;
Rolletschek, Hardy;
Fuchs, Johannes;
Melkus, Gerd;
and Thomas Neuberger 4

Publication type:

Article

Advances in seed hypoxia research.

Published in:

Plant Physiology, 2025, v. 197, n. 1, p. 1, doi. 10.1093/plphys/kiae556

By:

Rolletschek, Hardy;
Borisjuk, Ljudmilla;
Gómez-Álvarez, Eva María;
Pucciariello, Chiara

Publication type:

Article

Plant stem cells under low oxygen: metabolic rewiring by phytoglobin underlies stem cell functionality.

Published in:

Plant Physiology, 2023, v. 193, n. 2, p. 1416, doi. 10.1093/plphys/kiad344

By:

Mira, Mohammed M.;
Hill, Robert D.;
Hilo, Alexander;
Langer, Matthias;
Robertson, Sean;
Igamberdiev, Abir U.;
Wilkins, Olivia;
Rolletschek, Hardy;
Stasolla, Claudio

Publication type:

Article

Causes and consequences of endogenous hypoxia on growth and metabolism of developing maize kernels.

Published in:

Plant Physiology, 2023, v. 192, n. 2, p. 1268, doi. 10.1093/plphys/kiad038

By:

Langer, Matthias;
Hilo, Alexander;
Jiahn-Chou Guan;
Koch, Karen E.;
Hui Xiao;
Verboven, Pieter;
Gündel, Andre;
Wagner, Steffen;
Ortleb, Stefan;
Radchuk, Volodymyr;
Mayer, Simon;
Nicolai, Bart;
Borisjuk, Ljudmilla;
Rolletschek, Hardy

Publication type:

Article

Micro Imaging Displays the Sucrose Landscape within and along Its Allocation Pathways.

Published in:

Plant Physiology, 2018, v. 178, n. 4, p. 1448, doi. 10.1104/pp.18.00947

By:

Guendel, André;
Rolletschek, Hardy;
Wagner, Steffen;
Muszynska, Aleksandra;
Borisjuk, Ljudmilla

Publication type:

Article

Metabolic Architecture of the Cereal Grain and Its Relevance to Maximize Carbon Use Efficiency.

Published in:

Plant Physiology, 2015, v. 169, n. 3, p. 1698, doi. 10.1104/pp.15.00981

By:

Rolletschek, Hardy;
Grafahrend-Belau, Eva;
Munz, Eberhard;
Radchuk, Volodymyr;
Kartäusch, Ralf;
Tschiersch, Henning;
Melkus, Gerd;
Schreiber, Falk;
Jakob, Peter M.;
Borisjuk, Ljudmilla

Publication type:

Article

Quantitative Multilevel Analysis of Central Metabolism in Developing Oilseeds of Oilseed Rape during in Vitro Culture.

Published in:

Plant Physiology, 2015, v. 168, n. 3, p. 828, doi. 10.1104/pp.15.00385

By:

Schwender, Jörg;
Hebbelmann, Inga;
Heinzel, Nicolas;
Hildebrandt, Tatjana;
Rogers, Alistair;
Naik, Dhiraj;
Klapperstück, Matthias;
Braun, Hans-Peter;
Schreiber, Falk;
Denolf, Peter;
Borisjuk, Ljudmilla;
Rolletschek, Hardy

Publication type:

Article

A Noninvasive Platform for Imaging and Quantifying Oil Storage in Submillimeter Tobacco Seed.

Published in:

Plant Physiology, 2013, v. 161, n. 2, p. 583, doi. 10.1104/pp.112.210062

By:

Fuchs, Johannes;
Neuberger, Thomas;
Rolletschek, Hardy;
Schiebold, Silke;
Nguyen, Thuy Ha;
Borisjuk, Nikolai;
Börner, Andreas;
Melkus, Gerd;
Jakob, Peter;
Borisjuk, Ljudmilla

Publication type:

Article

Subtissue-Specific Evaluation of Promoter Efficiency by Quantitative Fluorometric Assay in Laser Microdissected Tissues of Rapeseed.

Published in:

Plant Physiology, 2011, v. 157, n. 2, p. 563, doi. 10.1104/pp.111.180760

By:

Jasik, Jan;
Schiebold, Silke;
Rolletschek, Hardy;
Denolf, Peter;
Van Adenhove, Katrien;
Altmann, Thomas;
Borisjuk, Ljudmilla

Publication type:

Article

Quantitative monitoring of paramagnetic contrast agents and their allocation in plant tissues via DCE-MRI.

Published in:

Plant Methods, 2022, v. 18, n. 1, p. 1, doi. 10.1186/s13007-022-00877-z

By:

Mayer, Simon;
Munz, Eberhard;
Hammer, Sebastian;
Wagner, Steffen;
Guendel, Andre;
Rolletschek, Hardy;
Jakob, Peter M.;
Borisjuk, Ljudmilla;
Neuberger, Thomas

Publication type:

Article

Quantitative FTIR imaging displays the sucrose landscape within and along its allocation pathway.

Published in:

Berichte aus dem Julius Kühn-Institut, 2019, n. 204, p. 50

By:

Guendel, André;
Rolletschek, Hardy;
Wagner, Steffen;
Muszynska, Aleksandra;
Borisjuk, Ljudmilla

Publication type:

Article

Non-Invasive Single-Grain Screening of Proteins and Other Features by Combination of Near-Infrared Spectroscopy and Nuclear Magnetic Resonance.

Published in:

Agronomy, 2023, v. 13, n. 5, p. 1393, doi. 10.3390/agronomy13051393

By:

Keil, Peter;
Gündel, Beate;
Gündel, André;
Rolletschek, Hardy;
Borisjuk, Ljudmilla

Publication type:

Article

Internal and external nutrient cycles in stands of Phragmites australis -- a model for two ecotypes

Published in:

Hydrobiologia, 1999, v. 408/409, p. 343

By:

Rolletschek, Hardy;
Lippert, Indra;
Kohl, Johannes-Gunter;
Kuhl, Harald

Publication type:

Article

SWEET11b transports both sugar and cytokinin in developing barley grains.

Published in:

Plant Cell, 2023, v. 35, n. 6, p. 2186, doi. 10.1093/plcell/koad055

By:

Radchuk, Volodymyr;
Belew, Zeinu M;
Gündel, Andre;
Mayer, Simon;
Hilo, Alexander;
Hensel, Goetz;
Sharma, Rajiv;
Neumann, Kerstin;
Ortleb, Stefan;
Wagner, Steffen;
Muszynska, Aleksandra;
Crocoll, Christoph;
Xu, Deyang;
Hoffie, Iris;
Kumlehn, Jochen;
Fuchs, Joerg;
Peleke, Fritz F;
Szymanski, Jedrzej J;
Rolletschek, Hardy;
Nour-Eldin, Hussam H

Publication type:

Article

Seeing plants as never before.

Published in:

New Phytologist, 2023, v. 238, n. 5, p. 1775, doi. 10.1111/nph.18871

By:

Borisjuk, Ljudmilla;
Horn, Patrick;
Chapman, Kent;
Jakob, Peter M.;
Gündel, Andre;
Rolletschek, Hardy

Publication type:

Article