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Nutrition


 

Publications 2014

Publications 2013

Publications 2012

  • Vaseva, I; Akiscan, Y; Simova-Stoilova, L; Kostadinova, A; Nenkova, R; Anders, I; Feller, U; Demirevska, K
    Antioxidant response to drought in red and white clover 
    Acta Physiologiae Plantarum 34 (5): 1689-1699 SEP 2012

  • Vicca, S; Gilgen, AK; Serrano, MC; Dreesen, FE; Dukes, JS; Estiarte, M; Gray, SB; Guidolotti, G; Hoeppner, SS; Leakey, ADB; Ogaya, R; Ort, DR; Ostrogovic, MZ; Rambal, S; Sardans, J; Schmitt, M; Siebers, M; van der Linden, L; van Straaten, O; Granier, A
    Urgent need for a common metric to make precipitation manipulation
    experiments comparable
    New Phytologist 195 (3): 518-522 AUG 2012

  • Grigorova, B; Vassileva, V; Klimchuk, D; Vaseva, I; Demirevska, K; Feller, U
    Drought, high temperature, and their combination affect ultrastructure of chloroplasts and mitochondria in wheat (Triticum aestivum L.) leaves 
    Journal of Plant Interactions 7 (3): 204-213 AUG 2012

  • Gilgen, A
    Drought effects in Swiss grassland systems under changing climate
    ProClim-Flash 54: 15 JUN 2012

  • Page, V; Blösch, RM; Feller, U
    Regulation of shoot growth, root development and manganese allocation in wheat (Triticum aestivum) genotypes by light intensity
    Plant Growth Regulation 67 (3): 209-215 JUN 2012

  • Vassileva, V; Demirevska, K; Simova-Stoilova, L; Petrova, T; Tsenov, N; Feller, U
    Long-Term Field Drought Affects Leaf Protein Pattern and Chloroplast Ultrastructure of Winter Wheat in a Cultivar-Specific Manner 
    Journal of Agronomy and Crop Science 198 (2): 104-117 APR 2012

  • Signarbieux, C; Feller, U
    Effects of an extended drought period on physiological properties of grassland species in the field 
    Journal of Plant Research 125 (2): 251-261 MAR 2012

  • Simova-Stoilova, L; Demirevska, K; Kingston-Smith, A; Feller, U
    Involvement of the leaf antioxidant system in the response to soil flooding in two Trifolium genotypes differing in their tolerance to waterlogging 
    Plant Science 183: 43-49 FEB 2012

Publications 2011
Publications 2010
  • Galle, A; Esper, J; Feller, U; Ribas-Carbo, M; Fonti, P
    Responses of wood anatomy and carbon isotope composition of Quercus pubescens saplings subjected to two consecutive years of summer drought
    Annals of Forest Science 67 (8): Art. No. 809 DEC 2010

  • Vaseva, II; Grigorova, BS; Simova-Stoilova, LP; Demirevska, KN; Feller, U
    Abscisic acid and LEA profile changes in winter wheat under progressive drought stress
    Plant Biology 12 (5): 698-707 SEP 2010

  • Zeeman, MJ; Hiller, R; Gilgen, AK; Michna, P; Plüss, P; Buchmann, N; Eugster, W
    Management and climate impacts on net CO2 fluxes and carbon budgets of three grasslands along an elevational gradient in Switzerland
    Agricultural and Forest Meteorology 150 (4): 519–530 APR 2010

  • Joos, O; Hagedorn, F; Heim, A; Gilgen, AK; Schmidt, MWI; Siegwolf, RTW; Buchmann, N
    Summer drought reduces total and litter-derived soil CO2 effluxes in temperate grassland - clues from a 13C litter addition experiment
    Biogeosciences 7 (3): 1031-1041 MAR 2010

  • Reynolds-Henne, CE; Langenegger, A; Mani, J; Schenk, N; Zumsteg, N; Feller, U
    Interactions between temperature, drought and stomatal opening in legumes
    Environmental and Experimental Botany 68 (1): 37–43 MAR 2010

  • Simova-Stoilova, L; Vaseva, I; Grigorova, B; Demirevska, K; Feller, U 
    Proteolytic activity and cysteine protease expression in wheat leaves under severe soil drought and recovery
    Plant Physiology and Biochemistry 48 (2-3): 200-206 FEB-MAR 2010

  • Gilgen, AK; Signarbieux, C; Feller, U; Buchmann, N
    Competitive advantage of Rumex obtusifolius L. might increase in intensively managed temperate grasslands under drier climate
    Agriculture, Ecosystems & Environment 135 (1-2): 15–23 JAN 2010

Publications 2009
  • Page, V; Schwitzguébel, JP
    Metabolism of sulphonated anthraquinones in rhubarb, maize and celery: the role of cytochromes P450 and peroxidases
    Plant Cell Reports 28 (11): 1725-1735 NOV 2009

  • Page V; Schwitzguébel, JP
    The role of cytochromes P450 and peroxidases in the 
    detoxification of sulphonated anthraquinones by rhubarb and common sorrel plants cultivated under hydroponic conditions
    Environmental Science and Pollution Research 16 (7): 805-816 NOV 2009

  • Gilgen, AK; Buchmann, N 
    Response of temperate grasslands at different altitudes to simulated summer drought differed but scaled with annual precipitation
    Biogeosciences 6 (11): 2525-2539 NOV 2009

  • Demirevska, K; Zasheva, D; Dimitrov, R; Simova-Stoilova, L; Stamenova, M; Feller, U 
    Drought stress effects on Rubisco in wheat: changes in the Rubisco large subunit
    Acta Physiologiae Plantarum 31 (6): 1129-1138 NOV 2009

  • Reynolds-Henne, CE; Saurer, M; Siegwolf, RTW
    Temperature versus species-specific influences on the stable oxygen isotope ratio of tree rings
    Trees - Structure and Function 23 (4): 801-811 AUG 2009

  • Vassileva, V; Simova-Stoilova, L; Demirevska, K; Feller, U 
    Variety-specific response of wheat (Triticum aestivum L.) leaf mitochondria to drought stress
    Journal of Plant Research 122 (4): 445-454 JUL 2009

  • Simova-Stoilova, L; Demirevska, K; Petrova, T; Tsenov, N; Feller, U 
    Antioxidative protection and proteolytic activity in tolerant and sensitive wheat (Triticum aestivum L.) varieties subjected to long-term field drought
    Plant Growth Regulation 58 (1): 107-117 MAY 2009

Publications 2008
  • Signarbieux, C; Feller, U.
    Effects of an extended drought period on grasslands at various altitudes in Switzerland: A field study, 
    inPhotosynthesis. Energy from the Sun. 14th International Congress on Photosynthesisedited by: Allen, J. F., Gantt, E., Golbeck, J. H., and Osmond, B., Springer, Dordrecht, Netherlands, 1371–1374, 2008

  • Simova-Stoilova, L; Demirevska, K; Petrova, T; Tsenov, N; Feller, U
    Antioxidative protection in wheat varieties under severe recoverable drought at seedling stage
    Plant Soil Environment 54 (12): 529-536 DEC 2008 Fulltext

  • Demirevska, K; Simova-Stoilova, L; Vassileva, V; Feller, U
    Rubisco and some chaperone proteins responses to water stress and rewatering at early seedling growth of drought sensitive and tolerant wheat varieties. 
    Plant Growth Regulation 56 (2): 97–106 NOV 2008

  • Feller, U; Anders, I; Demirevska, K 
    Degradation of rubisco and other chloroplast proteins under abiotic stress
    General and Applied Plant Physiology 34 (1-2): 5-18 OCT 2008

  • Weisskopf, L; Le Bayon, RC; Kohler, F; Page, V; Jossi, M; Gobat, JM; Martinoia, E; Aragno, M 
    Spatio-temporal dynamics of bacterial communities associated with two plant species differing in organic acid secretion: A one-year microcosm study on lupin and wheat
    Soil Biology & Biochemistry 40 (7): 1772-1780 JUL 2008

  • Jasinski, M; Sudre, D; Schansker, G; Schellenberg, M; Signarbieux, C; Martinoia, E; Bovet, L
    AtOSA1, a Member of the Abc1-Like Family, as a New Factor in Cadmium and Oxidative Stress Response
    Plant Physiology 147 (2): 719-731 JUN 2008

  • Aubry, S; Mani, J; Hörtensteiner, S
    Stay-green protein, defective in Mendel's green cotyledon mutant, acts independent and upstream of pheophorbide a oxygenase in the chlorophyll catabolic pathway
    Plant Molecular Biology 67 (3): 243-256 JUN 2008

  • Haldimann, P; Galle, A; Feller, U
    Impact of an exceptionally hot dry summer on photosynthetic traits in oak (Quercus pubescens) leaves
    Tree Physiology 28 (5): 785-795 MAY 2008

  • Feller, U; Anders, I; Mae, T
    Rubiscolytics: fate of Rubisco after its enzymatic function in a cell is terminated
    Journal of Experimental Botany 59 (7):1615-1624 MAY 2008

Publications 2007
  • Schenk, N; Schelbert, S; Kanwischer, M; Goldschmidt, EE; Dörmann, P; Hörtensteiner, S
    The chlorophyllases AtCLH1 and AtCLH2 are not essential for senescence-related chlorophyll breakdown in Arabidopsis thaliana
    Febs Letters 581 (28): 5517-5525 Nov 2007

  • Galle, A; Feller, U 
    Changes of photosynthetic traits in beech saplings (Fagus sylvatica) under severe drought stress and during recovery 
    Physiologia Plantarum 131 (3): 412-421 NOV 2007

  • Feller, U
    Stomatal opening at elevated temperature: an underestimated regulatory mechanism? 
    General and Applied Plant Physiology 32 (1): 19-31 NOV 2007

  • Parrott, DL; McInnerney, K; Feller, U; Fischer AM 
    Steam-girdling of barley (Hordeum vulgare) leaves leads to carbohydrate accumulation and accelerated leaf senescence, facilitating transcriptomic analysis of senescence-associated genes 
    New Phytologist 176 (1): 56-69 OCT 2007

  • Sekhara, RDMR; Schorderet, M; Feller, U; Reinhardt, D
    A petunia mutant affected in intracellular accommodation and morphogenesis of arbuscular mycorrhizal fungi
    Plant Journal 51 (5): 739-750 SEP 2007

  • Grigorova, B; Vasseva, I; Demirevska, K; Feller, U
    Effect of combined drought and heat stress on heat shock proteins in wheat varieties
    Acta Physiologiae Plantarum 29 (Suppl.)S63-S63 AUG 2007

  • Simova-Stoilova, L; Demirevska, K; Petrova, T; Tsenov, N; Feller, U
    The response of four winter wheat (Triticum aestivum L.) varieties to field water deficit: leaf anti-oxidative protection and proteolytic activity 
    Acta Physiologiae Plantarum 29 (Suppl.)S109-S109 AUG 2007

  • Thoenen, M; Herrmann, B; Feller, U
    Senescence in wheat leaves: is a cysteine endopeptidase involved in the degradation of the large subunit of Rubisco?
    Acta Physiologiae Plantarum 29 (4): 339-350 AUG 2007

  • Galle, A; Haldimann, P; Feller, U.
    Photosynthetic performance and water relations in young pubescent oak (Quercus pubescens) trees during drought stress and recovery.
    New Phytologist 174 (4): 799 Jun 2007

  • Harpaz-Saad, S; Azoulay, T; Arazi, T; Ben-Yaakov, E; Mett, A; Shiboleth, YM; Hörtensteiner, S; Gidoni, D; Gal-On, A; Goldschmidt, EE; Eyal, Y
    Chlorophyllase is a rate-limiting enzyme in chlorophyll catabolism and is posttranslationally regulated 
    Plant Cell 19 (3): 1007-1022 MAR 2007

  • Kim, DY; Bovet, L; Maeshima, M; Martinoia, E; Lee, Y
    The ABC transporter AtPDR8 is a cadmium extrusion pump conferring heavy metal resistance
    Plant Journal 50 (2): 207-218 APR 2007

  • Armstead, I; Donnison, I; Aubry, S; Harper, J; Hörtensteiner, S; James, C; Mani, J; Moffet, M; Ougham, H; Roberts, L; Thomas, A; Weeden, N; Thomas, H; King I
    Cross-Species Identification of Mendel's I Locus
    Science 315: 73 JAN 2007

  • Pružinská, A; Anders, I; Aubry, S; Schenk, N; Tapernoux-Lüthi, E; Müller, T; Kräutler, B; Hörtensteiner, S
    In Vivo Participation of Red Chlorophyll Catabolite Reductase in Chlorophyll Breakdown
    Plant Cell 19 (1): 369-387 JAN 2007
Publications 2006 Publications 2005
  • Demirevska-Kepova, K; Holzer, R; Simova-Stoilova, L; Feller, U
    Heat stress effects on ribulose-1,5-bisphosphate carboxylase/oxygenase, Rubisco binding protein and Rubisco activase in wheat leaves
    Biologia Plantarum, 49 (4): 521-525 DEC 2005

  • Bovet, L; Feller, U; and Martinoia, E
    Possible involvement of plant ABC transporters in cadmium detoxification: a cDNA sub-microarray approach
    Environment International 31 (2), 263-267 FEB 2005

  • Pružinská, A; Tanner, G; Aubry, S; Anders, I; Moser, S; Müller, T; Ongania, KH; Kräutler, B; Youn, JY; Liljegren, SJ; Hörtensteiner, S
    Chlorophyll breakdown in senescent Arabidopsis leaves. Characterization of chlorophyll catabolites and of chlorophyll catabolic enzymes involved in the degreening reaction
    Plant Physiology, 139 (1): 52-63 SEP 2005

  • Page V; Feller, U
    Selective Transport of Zinc, Manganese, Nickel, Cobalt and Cadmium in the Root System and Transfer to the Leaves in Young Wheat Plants
    Annals of Botany, 96 (3): p. 425-434 September 2005

  • Santelia, D; Vincenzetti, V; Azzarello, E; Bovet, L; Fukao, Y; Duchtig, P; Mancuso, S; Martinoia, E; Geisler, M
    MDR-like ABC transporter AtPGP4 is involved in auxin-mediated lateral root and root hair development
    FEBS Letters, 579 (24): 5399-5406 OCT 10 2005

  • Riesen, O; Feller, U
    Redistribution of nickel, cobalt, manganese, zinc, and cadmium via the phloem in young and maturing wheat
    Journal of Plant Nutrition28 (3) 421-430 March 2005

  • Haldimann, P; Feller, U
    Growth at moderately elevated temperature alters the physiological response of the photosynthetic apparatus to heat stress in pea (Pisum sativum L.) leaves
    Plant Cell and Environment, 28 (3): 302-317

Publications 2004 Publications 2003
  • Adriana Pruzinská, Gaby Tanner, Iwona Anders, Maria Roca, and Stefan Hörtensteiner
    Chlorophyll breakdown: Pheophorbide a oxygenase is a Rieske-type iron-sulfur protein, encoded by the accelerated cell death 1 gene 
    Proc. Natl. Acad. Sci. USA, 100 (25), 15259-15264 [pdf]

  • Oberhuber M; Berghold J; Breuker K; Hörtensteiner S; Krautler B
    Breakdown of chlorophyll: A nonenzymatic reaction accounts for the formation of the colorless "nonfluorescent" chlorophyll catabolites
    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 2003, Vol 100, Iss 12, pp 6910-6915

  • Minder S; Feller U
    Dynamics of sodium-22 and cesium-134 in young wheat plants
    JOURNAL OF PLANT NUTRITION 2003, Vol 26, Iss 4, pp 731-744.

  • Bovet L; Eggmann T; Meylan-Bettex M; Polier J; Kammer P; Marin E; Feller U; Martinoia E
    Transcript levels of AtMRPs after cadmium treatment: induction of AtMRP3
    PLANT CELL AND ENVIRONMENT 2003, Vol 26, Iss 3, pp 371-381.

Publications 2002
  • Hörtensteiner, S., Feller, U.: 
    Nitrogen metabolism and remobilization during senescence. 
    J. Exp. Bot., 53, 927-937.

  • Wälti, M., Roulin, S., Feller, U.
    Effects pf pH, light and temperature on (1,3, 1, 4)-ß-glucanase stability in wheat leaves. 
    Plant Physiol. Biochem., 40 (4): 363-371.

  • Henriques, R., Jasik, J., Klein, M., Martinoia, E., Feller, U., Schnell, J., Pais, M.S., Koncz, C.: 
    Knock-out of Arabidopsis metal transporter gene IRT1 results in iron deficiency accompanied by cell differentiation defects. 
    Plant Mol. Biol., 50 (4): 587-597.

Publications 2001
  • Brouquisse, R., Masclaux, C., Feller, U., Raymond, P.: Protein hydrolysis and nitrogen remobilisation in plant life and senescence. In: Plant Nitrogen. P.J. Lea and J.-F. Morot-Gaudry (eds.), Springer-Verlag, Berlin, 275-293, 2001.

  • Herrmann, B., Jones, S.K., Fuhrer, J., Feller, U., Neftel, A.: N budget and NH 3 exchange of a grass/clover crop at two levels of N application. Plant Soil, 235: 243-252, 2001.

  • Roulin, S., Feller, U.: Reversible accumulation of (1?3, 1 ? 4)-ß -glucan endohydrolase in wheat leaves under sugar depletion. J. Exp. Bot., 52: 2323-2332, 2001.

  • Kopriva, S., Büchert, T., Fritz, G., Suter, M., Weber, M., Benda, R., Schaller, J., Feller, U., Schürmann, P., Schünemann, V., Trautwein, A.X., Kroneck, P.M.H., Brunold, C.: Plant adenosine 5'-phosphosulfate reductase is a novel iron-sulfur protein. J. Biol. Chem., 276: 42881-42886, 2001.

  • Oberhuber, M., Berghold, J., Mühlecker, W., Hörtensteiner, S., Kräutler, B.: Chlorophyll breakdown - on a nonfluorescent chlorophyll catabolite from spinach. Helv. Chim. Acta, 84: 2615-2627, 2001.

  • Thomas, H., Ougham, H., Hörtensteiner, S.: Recent advances in the cell biology of chlorophyll catabolism. Adv. Bot. Res., 35: 1-52.
Publications 2000
  • Zeller, S., Feller, U.: Long-distance transport of alkali metals in maturing wheat. Biol. Plant., 43 (4): 523-528. .

  • Feller, U., Riesen, T., Zehnder, H.J.: Transfer of cesium from the xylem to the phloem in the stem of wheat. Biol. Plant., 43 (2): 309-311. .

  • Hörtensteiner, S., Rodoni, S., Schellenberg, M., Vicentini, F., Nandi, O.I., Qiu, Y.-L., Matile, P.: Evolution of chlorophyll degradation: the significance of RCC reductase. Plant Biol., 2: 63-67. .

  • Wüthrich, K.L., Bovet, L., Hunziker, P.E., Donnison, I.S., Hörtensteiner, S.: Molecular cloning, functional expression and characterization of RCC reductase, a protein of chlorophyll catabolism. Plant J., 21 (2): 189-198. .

  • Hörtensteiner, S., Chinner, J., Matile, P., Thomas, H., Donnison, I.S.: Chlorophyll breakdown in Chlorella protothecoides: characterization of degreening and cloning of degreening related genes. Plant Mol. Biol., 42 (3): 439-450.

  • Mühlecker, W., Kräutler, B., Moser, D., Matile, P., Hörtensteiner, S.: Breakdown of chlorophyll: a fluorescent chlorophyll catabolie from sweet pepper (Capsicum annuum). Helv. Chim Acta, 83 (1): 278-286.
Publications 1999
  • Zeller, S. and Feller, U.: Long-distance transport of cobalt and nickel in maturing wheat. Eur. J. Agr. 10 (1): 91-98, 1999.

  • Zehnder, H. J., Kopp, P., Riesen, T. and Feller, U.: Distribution of radiocesium in grape vines plants after foliar contamination: effect of potassium supply on the release from the roots. Gartenbauwissenschaft, 64: 247-252.

  • Debrunner N., von Lerber, F. and Feller, U.: Solute losses from various shoot parts of field-grown wheat by leakage in the rain. In: Improved Crop Quality by Nutrient Management. D. Anec and P. Martin-Prével (eds.), Kluwer Academic Publishers, Dordrecht, 131-134.

  • Drury, R., Hörtensteiner, S., Donnison, I.S., Bird, C.R., Seymour, G.B.: Chlorophyll catabolism and gene expression in the peel of ripening banana fruits. Physiol Plant. , 107: 32-38, 1999.
Publications 1998
  • Zeller, S. and Feller, U.: Redistribution of cobalt and nickel in detached wheat shoots: effects of steam-girdling and of cobalt and nickel supply. Biol. Plant. , 41 (3): 427-434.

  • Herrmann, B., Hölzer, R., Crafts-Brandner, J. J. and Feller, U.: Effects of CO 2 , light and temperature on rubisco activase protein in wheat leaf segments. In: Photosynthesis: Mechanisms and Effects. G. Garab (ed), Kluwer Academic Publishers, Dordrecht, Volume III, 2059-2062.

  • Roulin, S. and Feller, U.: Dithiothreitol triggers photooxidative stress and fragmentation of the large subunit of ribulose-1,5-bisphosphate carboxylase/oxygenase in intact pea chloroplasts. Plant. Physiol. Biochem. , 36: 849-856.

  • Thoenen, M. and Feller, U.: Degradation of glutamine synthetase in intact chloroplasts isolated from pea (Pisum sativum) leaves. Aust. J. Plant Physiol. , 25: 279-286.

  • Roulin, S. and Feller, U.: Light-dependent degradation of stromal proteins in intact chloroplasts isolated from Pisum sativum L. leaves: requirement for divalent cations. Planta , 205: 297-304.

  • Herrmann, B. and Feller, U.: CO2, light and temperature influence senescence and protein degradation in wheat leaf segments. Physiol. Plant. , 103: 320-326.

  • Crafts-Brandner, S.J., Hölzer, R. and Feller, U.: Influence of nitrogen deficiency on senescence and the amounts of RNA and proteins in wheat leaves. Physiol. Plant. , 102: 192-200.

  •  Feller, U., Crafts-Brandner, S.J. and Salvucci, M.E.: Moderately high temperatues inhibit ribulose-1,5 bisphosphate carboxylase/oxygenase (Rubisco) activase-mediated activation of Rubisco. Plant Physiol. , 116: 539-546.

  •  Kamber, L. and Feller, U.: Influence of the activation status and of ATP on phosphoribulokinase degradation. J. Exp. Bot. , 49: 139-144.

  •  Hörtensteiner, S.: NCC malonyltransferase catalyzes the final step of chlorophyll breakdown in rape (Brassica napus). Phytochemistry , 49: 953-956.

  • Hörtensteiner, S., Wüthrich, K.L., Matile, P., Ongania, K., Kräutler, B.: The key step in chlorophyll breakdown in higher plants: cleavage of pheophorbide a macrocycle by a monooxygenase. J. Biol. Chem. , 273: 15335-15339.

  • Lu, Y.-P., Drozdowicz, D., Hörtensteiner, S., Martinoia, E., Rea, P.A.: AtMRP2, an Arabidopsis ATP binding cassette transporter able to transport glutathione S-conjugates and chlorophyll catabolites: functional comparisons with AtMRP1. Plant Cell , 10: 267-282.

  • Tommasini, R., Vogt, E., Fromenteau, M., Hörtensteiner, S., Matile, P., Amrhein, N., Martinoia, E.: An ABC-transporter of Arabidopsis thaliana has both glutathione-conjugate and chlorophyll catabolite transport activity. Plant J. , 13: 773-780.
Publications 1997
  • Herren, T. and Feller, U.: Influence of increased zinc levels on phloem transport in wheat shoots. J. Plant Physiol. , 150: 228-231.

  • Herren, T. and Feller, U.: Transport of cadmium via xylem and phloem in maturing wheat shoots: Comparison with the translocation of zinc, strontium and rubidium. Ann. Bot. , 80: 623-628.

  • Roulin, S. and Feller, U.: Light-induced proteolysis of stromal proteins in pea (Pisum sativum L.) chloroplasts: requirement for intact organelles. Plant Sci., 128: 31-41.

  • Stieger, P.A. and Feller, U.: Requirements for the light-stimulated degradation of stromal proteins in isolated pea (Pisum sativum L.) chloroplasts. J. Exp. Bot. , 48: 1639-1645.

  • Stieger, P.A. and Feller, U.: Degradation of stromal proteins in pea (Pisum sativum L.) chloroplast under oxidising conditions. J. Plant Physiol. , 151: 556-562.

  • Rodoni, S., Mühlecker, W., Anderl, M., Kräutler, B., Moser, D., Thomas, H., Matile, P., Hörtensteiner, S.: Chlorophyll breakdown in senescent chloroplasts: cleavage of pheophorbide a in two enzymic steps. Plant Physiol. , 115: 669-676.

  • Rodoni, S., Vicentini, F., Schellenberg, M., Matile, P., Hörtensteiner, S.: Partial purification and characterization of red chlorophyll catabolite reductase, a stroma protein involved in chlorophyll breakdown. Plant Physiol. , 115: 677-682.

  • Mühlecker, W., Ongania, K., Kräutler, B., Matile, P., Hörtensteiner, S.: On the enigma of chlorophyll breakdown: the constitution of a "fluorescent" chlorophyll catabolite. Angew. Chem. Int. Ed. Engl. , 36: 401-404.
Publications 1996
  • Crafts-Brandner, S.J., Klein, R.R., Klein, P., Hölzer, R. and Feller, U.: Coordination of protein and mRNA abundances of stromal enzymes and mRNA abundances of the Clp protease subunits during senescence of Phaseolus vulgaris (L.) leaves. Planta , 200: 312-318.

  • Herren, T. and Feller, U.: Effect of locally increased zinc contents on zinc transport from the flag leaf lamina to the maturing grains of wheat. J. Plant Nutr. 19: 379 - 387.

  • Zehnder, H.-J., Kopp, P., Eikenberg, J., Feller U. and Oertli, J.J.: Uptake and transport of radioactive cesium and strontium into strawberry plants and grapevines after leaf contamination. Proceedings of the International Symposium on Radioecology 1996 "Ten Years Radioecological Research Following the Chernobyl Accident", Wien, pp. 155-161.

  • Zehnder, H.-J., Kopp, P., Eikenberg, J., Feller U. and Oertli, J.J.: Aufnahme radioaktiver Stoffe durch Erdbeer- und Rebenblätter. Agrarforschung 3: 165-167.

  • Hinder, B., Schellenberg, M., Rodoni, S., Ginsburg, S., Vogt, E., Martinoia, E., Matile, P., Hörtensteiner, S.: How plants dispose of chlorophyll catabolites: directly energized uptake of tetrapyrrolic breakdown products into isolated vacuoles. J. Biol. Chem. , 271: 27233-27236, 1996.





 

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 Head

Prof. Urs Feller


Prof. em. Dr. Urs Feller

e-mail feller@ips.unibe.ch


 Research Focus Plant Nutrition


Plant Nutrition

The integration of processes on the subcellular level in the physiology of the whole plant was an important aspect of our research. Biochemical investigations with isolated organelles (e.g. chloroplasts) and field experiments with intact crop plants represent complementary approaches to elucidate the regulatory network. The redistribution of nutrients and assimilates is relevant for an efficient use of nutrients by crop plants and for the quality of plant products.

Details of our work during the past few years are documented in the publications.

Protein Metabolism

Reduced nitrogen in mesophyll cells of C3-plants is present mainly in the chloroplasts and stromal proteins represent the most relevant nitrogen fraction within the chloroplasts. Proteins cannot be exported as such via the phloem and must therefore be degraded prior to the export of this nitrogen from leaves to other parts of the same plant.

Metal Transport

The mobility of nutrients, assimilates and pollutants in the phloem varies in a wide range. Radionuclides are often used to investigate transport processes on the whole plant level.

Physiological limitations at elevated temperatures and under drought

On the level of individual plants, climate factors (temperature, CO2 concentration in the ambient air, water relations) influence growth and productivity in a complex manner. Photosynthesis, nutrient and assimilate allocation as well as the senescence pattern are affected by the climate. Such effects may influence the competition between species in a natural population and the productivity of crop plants.