• Head of School, School of BioSciences, University of Melbourne, 2017-
  • Distinguished Professor, University of Toronto, 2015-2020
  • Founder and Inaugural Director, Canadian Centre for World Hunger Research (CCWHR)
  • Canada Research Chair (Systems Biology of Plant Nutrition & Ion Transport), 2005-2015
  • Bayer Science for a Better Life Award, for Canadians who have made a mark on society through science and innovation. Also see this article
  • Lifetime Achievement Award, Laval University, 2013
  • Principal's Research Award, UTSC, 2012-2013. Watch the lecture associated with this award here.
  • 2013 Spring Convocation Speaker, University of Toronto, Science
  • Editor-in-Chief, Journal of Plant Physiology (Elsevier), October 2014-
  • Consulting Editor, Plant & Soil, 2015-
  • Editorial Board, Plant, Cell & Environment, 2006-
  • Editorial Board, Frontiers in Plant Science, 2011-
  • Editorial Board, Frontiers in Chemistry (Agricultural Biological Chemistry), 2014-
  • Evaluation Group, Biological Systems & Functions, Natural Sciences & Engineering Research Council of Canada (NSERC), 2010-2013
  • Biotechnology and Biological Sciences Research Council (BBSRC) Research Grants Board of the UK, 2013-
  • Advisor, Bill & Melinda Gates Foundation, 2013-
          Citations on GoogleScholar



We are moving to Australia!!!

Prof. Kronzucker has accepted the position of Head of School of BioSciences at the University of Melbourne, Australia’s top research university (new email address: herbert.kronzucker@unimelb.edu.au). We hope to have our new lab up and running by the Canadian fall (the Australian spring) of 2017. New student and postdoc applications should be directed to: herbert.kronzucker@unimelb.edu.au. Our home will be the ‘Bio21’ Molecular Science and Biotechnology Institute of the University of Melbourne, and we are excited to be next door to a group of truly exceptional research teams: http://www.bio21.unimelb.edu.au. We are looking forward to our new life by the waters of Port Phillip Bay, in one of the world’s most liveable cities :).

For more on the School of Biosciences: http://biosciences.unimelb.edu.au

Professor Herbert J. Kronzucker

Distinguished Professor

Head of School

School of BioSciences
Faculty of Science
University of Melbourne

Editor-in-Chief
Journal of Plant Physiology (Elsevier)

 

School of BioSciences

The University of Melbourne

BioSciences 4, Building 147

Laboratory: Bio21

Parkville 3010

Victoria, Australia

Phone: +61 39035 9793

Mobile: +61 481 915 468

E-mail: herbert.kronzucker@unimelb.edu.au

 

Executive Assistant to the Head (Mr. Carlos C. Martin): +61 39035 9541;

carlos.campanero@unimelb.edu.au




RESEARCH STATEMENT

Declining soil fertility, increasing soil salinization, and a burgeoning human population have led to severe strains on the world's agricultural systems. A key factor in the relief from such strains is the better understanding of plant responses to soil nutrients and toxicants, and the application of this understanding to the improvement of cultivars and farming practices. Our laboratory seeks to directly engage in this urgent mission, by use of a combination of physiological approaches designed to address questions of ion acquisition and stress tolerance at cellular and whole-plant levels, in the world's most important plant species.

We examine the role of nutrient ion fluxes at cellular, whole-organism, and ecosystem levels, focusing on yield potential in cereals, cellular ionic interactions, and drought and salt stresses. Our approach is multidisciplinary, ranging from mathematical modelling to radiotracing of ion fluxes and ecological analyses in the field. The techniques we use include the subcellular tracing of ion fluxes and compartmentation, the genetic manipulation of plant metabolism and nutrient acquisition, electrophysiology, gas exchange, ionic and metabolic profiling of tissues, and analyses of plant growth and yield. We strive to investigate the physiology of intact model and non-model organisms, and develop methods to tackle the complexity associated with whole systems.

Our research program has attracted over 10 million dollars in research funding since 1999, and has been supported by The University of Melbourne, The University of Toronto, The Natural Sciences and Engineering Research Council of Canada (NSERC), the Canada Research Chair (CRC) program, the Canadian Foundation for Innovation (CFI), and Canada's national Green Crop Network (GCN), aimed at increasing greenhouse gas capture through biological means. Our international collaborative partners include The International Rice Research Institute, The University of Copenhagen, The University of Bonn, The Technical University of Munich, and The Chinese Academy of Sciences. In Canada, we have formed partnerships with diverse groups, including, in Toronto, the Canadian Association for Mental Health (CAMH), the Centre for Global Engineering (CGEN), the Dalla Lana School of Public Health, St. Michael's Hospital, and the Institute for the History and Philosophy of Science and Technology (IHPST); in Vancouver, the Tri-University Meson Facility (TRIUMF); in London, the BIOTRON facility at Western University; and in Quéc City, the University of Laval.

Herbert Kronzucker is a researcher at the University of Toronto's Scarborough Campus who is leading a team of researchers who are trying to help solve the problem of world hunger by developing a type of rice that can thrive in salt water.

Recent work from our lab, including a publication in Nature Plants, has been featured in The University of Melbourne's Pursuit magazine.
Our work on rice has been featured on the front page of Canada's national newspaper, The Globe & Mail.


Toronto Life Dec 2009 Our research has been featured in numerous spapers, magazines, television and radio broadcasts (including CBC, Radio Canada, CTV, Global TV, Fairchild Television, and the Weather Channel), a cover article in Toronto Life magazine, and the 2010 G20 Conference in Toronto, where it was hailed as among the city's greatest "life-changing and life-saving discoveries." Also, see our recent article on rice in Zoomer Magazine (June 2015 issue).

Our lab group's contributions to editorial activities at the Journal of Plant Physiology have been recently highlighted in the Bulletin of the Canadian Society of Plant Biologists (CSPB), which can be found here.

Our 2016 study in the journal New Phytologist has been covered in more than 300 international news outlets, including coverage by the American Association for the Advancement of Science (AAAS), the Global Plant Council, the New Phytologist Trust, Science Daily, Science Newsline, The Times of India (the world’s largest English-language daily), The Economic Times (the world's largest business newspaper after the Wall Street Journal), Google News, Yahoo! News, numerous government and industry outlets, and venues as exotic as The Oman Observer, The Syria Times, and The Zimbabwe Star.

RESEARCH GROUP


Senior Research Fellow:

Dr. Dev T. Britto 

Research Technician:

Wayne Huynh

Graduate Students:

Ahmed Hamam, Ph.D. candidate.
2016 Recipient of an Ontario Graduate Fellowship (OGS)

Shadman Zaman, M.Sc. candidate (co-supervised with Arun Ramachandran, Centre for Global Engineering)

Congratulations to Devrim Coskun
Congratulations to Devrim for successfully defending his Ph.D., and winning a prestigious NSERC Post-Doctoral Fellowship! He is continuing with his physiological research at Laval University.

And to Ruben Flam-Shepherd , who succesfully defended his M.Sc. thesis in March 2016.
Undergraduate Project Students:

Senthujan Gunaseelan
Abdulwahab Sidiqi
Anam Zaheer

Congratulations to Abdulwahab Sidiqi, who recently won an NSERC summer scholarship to continue his research in our lab!

Undergraduate Volunteers:

Fred Ma
Sujha Perinparajah

PUBLICATIONS           Plant, Cell & Environment cover     Physiologia Plantarum cover  cover articles - see Kronzucker et al. (2013, Plant & Soil), Balkos et al. (2010, Plant, Cell & Environment), and Kronzucker et al. (2003, Physiologia Plantarum), below.
  1. Coskun, D., Britto, D.T., Shi, W.M., Kronzucker, H.J. (2017). Nitrogen transformations in modern agriculture and the role of biological nitrification inhibition. Nature Plants 3, Article number: 17074, doi: 10.1038/nplants.2017.74
  2. Coskun, D., Britto, D.T., Shi, W.M., Kronzucker, H.J. (2017).  How plant root exudates shape the nitrogen cycle. Trends in Plant Science, doi: 10.1016/j.tplants.2017.05.004.
  3. Sun, L., Di, D.W., Li, G.J., Kronzucker, H.J., Shi, W.M. (2017). Spatio-temporal dynamics in global rice gene expression (Oryza sativa L.) in response to high ammonium stress. Journal of Plant Physiology 212, 94-104.
  4. Hessini, K., Kronzucker, H.J, Abdelly, C., Cruz, C. (2017). Drought stress obliterates the preference for ammonium as an N source in the C4 plant Spartina alterniflora. Journal of Plant Physiology 213, 98-107.
  5. Yu, F.W., Zhu, X.F., Li, G.J., Kronzucker, H.J., Shi, W.M. (2016). The chloroplast protease AMOS1/EGY1 affects phosphate homeostasis under phosphate stress. Plant Physiology, 172, 1200-1208. 
  6. Coskun, D., Britto, D.T., Huynh, W.Q., Kronzucker, H.J. (2016). The role of silicon in higher plants under salinity and drought stress. Frontiers in Plant Science 7,  Number  1072, doi:  10.3389/fpls.2016.01072
  7. Sun, L., Lu, Y.F., Yu, F.W., Kronzucker, H.J., Shi, W.M. (2016). Biological nitrification inhibition by rice root exudates and its relationship with nitrogen use efficiency. New Phytologist, 212, 646-656. (Highlighted by the American Association for the Advancement of Science, the New Phytologist Trust, the Global Plant Council, and featured in >300 international news outlets.)
  8. Sun, L, Lu, Y.F., Kronzucker, H.J., Shi, W.M. (2016). Quantification and enzyme targets of fatty acid amides from duckweed root exudates involved in the stimulation of denitrification. Journal of Plant Physiology 198, 81-88.
  9. Li, Y.L., Kronzucker, H.J., Shi, W.M. (2016). Microprofiling of nitrogen patches in paddy soil: Analysis of spatiotemporal nutrient heterogeneity at the microscale. Scientific Reports (Nature6, Number 27064, doi: 10.1038/srep27064
  10. Li, G.J., Kronzucker, H.J., Shi, W.M. (2016). The response of the root apex in plant adaptation to iron heterogeneity in soil. Frontiers in Plant Science 7, Number 00344, doi: 10.3389/fpls.2016.00344
  11. Hamam, A.M., Britto, D.T., Flam-Shepherd, R., Kronzucker, H.J. (2016). Measurement of differential Na+ efflux from apical and bulk root zones of intact barley and Arabidopsis plants. Frontiers in Plant Science 7, Number 00272, doi: 10.3389/fpls.2016.00272
  12. Coskun, D., Britto, D.T., Kochian, L.V., Kronzucker, H.J. (2016). How high do ion fluxes go? A re-evaluation of the two-mechanism model of K+ transport in plant roots. Plant Science 243, 96-104.
  13. Li, G.J., Kronzucker, H.J., Shi, W.M. (2016). Root developmental adaptation to Fe toxicity: mechanisms and management. Plant Signaling & Behavior, 11, doi: 10.1080/15592324.2015.1117722
  14. Britto, D.T., Wilhelm, C., Kronzucker H.J. (2016). From biochemical pathways to the agro-ecological scale: Carbon capture in a changing climate. Journal of Plant Physiology, 203, 1-2.
  15. Coskun, D., Britto, D.T., Kronzucker, H.J. (2016). Nutrient constraints on terrestrial carbon fixation: The role of nitrogen. Journal of Plant Physiology, doi:10.1016/j.jplph.2016.05.016
  16. Coskun, D., Britto, D.T., Kronzucker, H.J. (2016). The nitrogen-potassium intersection: Membranes, metabolism, and mechanism. Plant, Cell & Environment (Yearly Reviews of Environmental Plant Physiology), doi:10.1111/pce.12671
  17. Li, G.J., Song, H., Li, B.H., Kronzucker, H.J., Shi, W.M. (2015). Auxin Resistant1 and PIN-FORMED2 protect lateral root formation in Arabidopsis under iron stress. Plant Physiology 169, 2608-2623.
  18. Britto, D.T., Kronzucker, H.J. (2015). Sodium efflux in plant roots: What do we really know? Journal of Plant Physiology 186-7, 1-12.
  19. Li, G.J., Xu, W.F., Kronzucker, H.J., Shi, W.M. (2015). Ethylene is critical to the maintenance of primary root growth and Fe homeostasis under Fe stress in Arabidopsis. Journal of Experimental Botany 66, 2041-2054. [Supplemental Data]
  20. Kronzucker, H.J. (2015). Pride in being a plant physiologist. Journal of Plant Physiology 175, A1-2.
  21. Kronzucker, H. J. & Coskun, D. (2015). Bioengineering nitrogen acquisition in rice: Promises for global food security. In: Biological Nitrogen Fixation, Wiley/Blackwell (Frans J. de Bruijn, editor; invited chapter). Chapter V., pp. 47-56.
  22. Coskun, D., Britto, D.T., Kronzucker, H.J. (2014). The physiology of channel-mediated K+ acquisition in roots of higher plants. Physiologia Plantarum 151, 305-312. 
  23. Coskun, D., Britto, D.T., Hamam, A., Kronzucker, H.J. (2014). Measuring fluxes of mineral nutrients and toxicants in plants with radioactive tracers. Journal of Visualized Experiments 90, doi: 10.3791/51877
  24. Li, B.H., Li, G.J., Kronzucker, H.J., Baluška, F., Shi, W.M. (2014). Ammonium stress in Arabidopsis: signaling, genetic loci, and physiological targets. Trends in Plant Science 19, 107-114.
  25. Britto, D.T., Balkos, K.D., Becker, A., Coskun, D., Huynh, W.Q., Kronzucker, H.J. (2014). Potassium and nitrogen poising: physiological changes and biomass gains in rice and barley. Canadian Journal of Plant Science 94, 1085-1089.
  26. Lu, Y.F., Zhou, Y., Nakai, S., Hosomi, M., Zhang, H., Kronzucker, H.J., Shi, W.M. (2014). Stimulation of nitrogen removal in the rhizosphere of aquatic duckweed by root exudate components. Planta 239, 591-603.
  27. Coskun, D., Britto, D.T., Li, M., Becker, A., Kronzucker, H.J. (2013). Rapid ammonia gas transport accounts for futile transmembrane cycling under NH3/NH4+ toxicity in plant roots. Plant Physiology 163, 1859-1867.
  28. Xu, W.F., Jia, L.G., Shi, W.M., Baluška, F., Kronzucker, H.J., Liang, J.S., Zhang, J.H. (2013). Tomato 14-3-3 protein TFT4 modulates proton efflux, basipetal auxin transport and PKS5-J3 pathway in root growth response to alkaline stress. Plant Physiology 163, 1817-1828.
  29. Kronzucker, H.J., Coskun, D., Schulze, L.M., Wong, J.R., Britto, D.T. (2013). Sodium as nutrient and toxicant. Plant and Soil 369, 1-23 (Marschner Review & cover article).
  30. Britto, D.T. & Kronzucker, H.J. (2013). Ecological significance and complexity of N-source preference in plants. Annals of Botany 6, 957-963.
  31. Zou, N., Li, B.H., Chen, H., Su, Y., Kronzucker, H.J., Xiong, L.M., Baluška, F., Shi, W.M. (2013). GSA-1/ARG1 protects root gravitropism in Arabidopsis under ammonium stress. New Phytologist 200, 97-111.
  32. Coskun, D. & Kronzucker, H.J. (2013). Complexity of potassium acquisition: How much flows through channels? Plant Signaling & Behavior 8:e24799; PMID: 23656868.
  33. Coskun, D., Britto, D.T., Li, M., Oh, S., Kronzucker, H.J. (2013). Capacity and plasticity of K+ channels and high-affinity transporters in roots of barley (Hordeum vulgare L.) and Arabidopsis thaliana L. Plant Physiology 162, 496-511.
  34. Coskun, D., Britto, D.T., Jean, Y-K., Kabir, I., Tolay, I.. Torun, A.A., Kronzucker, H.J. (2013). K+ efflux and retention in response to NaCl stress do not predict salt tolerance in contrasting genotypes of rice (Oryza sativa L.). PLOS ONE  8, e57767.
  35. Li, G., Li, B.H., Dong, G., Feng, X., Kronzucker, H.J., Shi W.M. (2013). Ammonium-induced shoot ethylene production is associated with the inhibition of lateral root formation in Arabidopsis. Journal of Experimental Botany 64, 1413-1425.
  36. Li, B.H., Kronzucker, H.J., Shi, W.M. (2013). Molecular components of stress-responsive plastid retrograde signaling networks and their involvement in ammonium stress. Plant Signaling & Behavior 8. eLocation ID: e23107; doi: 10.4161/psb.23107
  37. Chen, G., Guo, S., Kronzucker, H.J., Shi, W.M. (2013). Nitrogen use efficiency (NUE) in rice links to NH4+ toxicity and futile NH4+ cycling in roots. Plant and Soil 369, 351-363.
  38. Britto, D.T. & Kronzucker, H.J. (2013). Flux measurements of cations using radioactive tracers. Methods in Molecular Biology 953, 161-170.
  39. Li, B.H., Li, Q., Xiong, L., Kronzucker, H.J., Krär, U., Shi W.M. (2012). Arabidopsis plastid AMOS1/EGY1 integrates abscisic acid signaling to regulate global gene expression response to ammonium stress. Plant Physiology 160, 2040-2051.
  40. Britto, D.T. & Kronzucker, H.J. (2012). Isotope techniques to study kinetics of Na+ and K+ transport under salinity conditions. Methods in Molecular Biology 913, 389-398.
  41. Zou, N., Li, B.H., Dong, G.Q., Kronzucker, H.J., Shi, W.M. (2012). Ammonium-induced loss of root gravitropism is related to auxin distribution and TRH1 function, and is uncoupled from the inhibition of root elongation in Arabidopsis. Journal of Experimental Botany 63, 3777-3788.
  42. Gattward, J.N., de Almeida, A.F., Souza Jú, J.O., Gomes, F.P., Kronzucker, H.J. (2012). Sodium-potassium synergism in Theobroma cacao: Stimulation of photosynthesis, water-use-efficiency, and mineral nutrition. Physiologia Plantarum 146, 350-362.
  43. Schulze, L.M., Britto, D.T., Li, M., Kronzucker, H.J. (2012). A pharmacological analysis of high-affinity sodium transport in barley (Hordeum vulgare L.): A 24Na+/ 42K+ study. Journal of Experimental Botany 63, 2479-2489.
  44. Li, G.J., Dong, G.Q., Li, B.H., Li, Q., Kronzucker, H.J., Shi W.M. (2012). Isolation and characterization of a novel ammonium-overly-sensitive mutant, amos2, in Arabidopsis thaliana. Planta 235, 239-252.
  45. Coskun, D., Britto, D.T., Jean, Y-K., Schulze L., Becker, A., Kronzucker, H.J. (2012). Silver ions disrupt K+ homeostasis and cellular integrity in barley (Hordeum vulgare L.) roots. Journal of Experimental Botany 63, 151-162.
  46. Li, B.H., Li, Q., Kronzucker, H.J., Shi, W.M. (2011). Roles of abscisic acid and auxin in shoot-supplied ammonium inhibition of root system  development. Plant Signaling & Behavior 6, 1451-1453.
  47. Britto, D.T. & Kronzucker, H.J. (2011). Genes do not form channels. Plant and Soil 346, 15-17.
  48. Li, B.H., Li, Q., Su, Y., Chen, H., Xiong, L, Mi, G., Kronzucker, H.J., Shi, W.M. (2011). Shoot-supplied ammonium targets the root auxin influx carrier AUX1 and inhibits lateral root emergence in Arabidopsis. Plant, Cell & Environment 34, 933-946.
  49. Kronzucker, H.J. & Britto, D.T. (2011). Sodium transport in plants: A critical review. New Phytologist 189, 54-81. (Tansley Review)
  50. Coskun, D., Britto, D.T., Kronzucker, H.J. (2010). Regulation and mechanism of potassium release from barley roots: an in planta 42K analysis. New Phytologist  188, 1028–1038.
  51. Li, Q., Li, B.H., Kronzucker, H.J., Shi, W.M. (2010). Root growth inhibition by NH4+ in Arabidopsis is mediated by the root tip and is linked to NH4+ efflux and GMPase activity. Plant, Cell & Environment 33, 1529-1542.
  52. Britto, D.T., Ebrahimi-Ardebili S., Hamam, A.M., Coskun, D., Kronzucker, H.J. (2010). 42K analysis of sodium-induced potassium efflux in barley: Mechanism and relevance to salt tolerance. New Phytologist 186, 373-384.
  53. Balkos, K.D., Britto, D.T., Kronzucker, H.J. (2010). Optimization of ammonium acquisition and metabolism by potassium in rice (Oryza sativa L. cv. IR-72). Plant, Cell & Environment 33, 23–34(cover article) 
  54. Britto, D.T. & Kronzucker, H.J. (2009). Ussing's conundrum and the search for transport mechanisms in plants. New Phytologist 183, 243-246.
  55. Szczerba, M.W., Britto, D.T., Kronzucker, H.J. (2009). K+ transport in plants: physiology and molecular biology. Journal of Plant Physiology 166, 447-466.
  56. Malagoli, P., Britto, D.T., Schulze, L.M., Kronzucker, H.J. (2008). Futile Na+ cycling at the root plasma membrane in rice (Oryza sativa L.) – kinetics, energetics, and relation to salinity tolerance. Journal of Experimental Botany 59, 4109–4117.
  57. Szczerba, M.W., Britto, D.T., Ali, S.A., Balkos, K.D., Kronzucker, H.J. (2008). NH4+-stimulated and -inhibited components of K+ transport in rice (Oryza sativa L.). Journal of Experimental Botany 59, 3415-3423.
  58. Kronzucker, H.J., Szczerba, M.W., Schulze, L.M., Britto, D.T. (2008). Non-reciprocal interactions between K+ and Na+ ions in barley. Journal of Experimental Botany 59, 2793-2801. 
  59. Britto, D.T. & Kronzucker, H.J. (2008). Cellular mechanisms of potassium transport in plants. Physiologia Plantarum 133, 637-650.
  60. Szczerba, M.W., Britto, D.T., Balkos, Kronzucker, H.J. (2008). Alleviation of rapid, futile ammonium cycling at the plasma membrane by potassium reveals K+-sensitive and -insensitive components of NH4+ transport. Journal of Experimental Botany 59, 303-313.
  61. Britto, D.T. & Kronzucker, H.J. (2007).  Mechanisms of potassium transport in plants. Proceedings of the International Fertiliser Society 605, 1-24.
  62. Britto, D.T. & Kronzucker, H.J. (2006). Futile cycling at the plasma membrane: A hallmark of low-affinity nutrient transport. Trends in Plant Science 11, 529-534. 
  63. Kronzucker, H.J., Szczerba, M.W., Moazami-Goudarzi, M., Britto, D.T. (2006). The cytosolic Na+:K+ ratio does not explain salinity-induced growth impairment in barley : A dual-tracer study using 42K+ and 24Na+. Plant, Cell & Environment 29, 2228-2237.
  64. Szczerba, M.W., Britto, D.T., Kronzucker, H.J. (2006). Rapid, futile K+ cycling and pool-size dynamics define low-affinity potassium transport in barley. Plant Physiology 141, 1494-1507. 
  65. Szczerba, M.W., Britto, D.T., Kronzucker, H.J. (2006). The face value of ion fluxes: the challenge of determining influx in the low-affinity transport range. Journal of Experimental Botany 57, 3293-3300.
  66. Britto, D.T., Szczerba, M.W., Kronzucker, H.J. (2006). A new, non-perturbing sampling procedure in tracer exchange measurements. Journal of Experimental Botany 57, 1309-1314.
  67. Britto, D.T. & Kronzucker, H.J. (2005). Plant nitrogen transport and its regulation in changing soil environments. Journal of Crop Improvement 15, 1-23.
  68. Britto, D.T. & Kronzucker, H.J. (2005). Nitrogen acquisition, PEP carboxylase, and cellular pH homeostasis: New views on old paradigms. Plant, Cell & Environment 28, 1396-1409.
  69. Kirk, G.J.D & Kronzucker, H.J. (2005). The potential for nitrification and nitrate uptake in the rhizospheres of wetland plants: A modelling study. Annals of Botany 96, 639 - 646.
  70. Kronzucker, H.J. (2005). A new encyclopedic account of plant nutrition: broad, brilliant, but also flawed. American Journal of Botany 92, 1421-1424.
  71. Britto, D.T. & Kronzucker, H.J. (2005). Plant nitrogen transport and its regulation in changing soil environments. In: Enhancing the Efficiency of Nitrogen Utilization in Plants. (A.S. Basra, S.S. Goyal & R. Tischner, eds.). The Haworth Press Inc., Binghampton, NY, pp. 1-23.
  72. Britto, D.T. & Kronzucker H.J. (2004). Bioengineering N acquisition in rice: Can novel initiatives in rice genomics and physiology contribute to global food security? BioEssays 26, 683-692.
  73. Britto, D.T., Ruth, T.J., Lapi, S., Kronzucker, H.J. (2004). Cellular and whole-plant chloride dynamics in barley: Insights into chloride-nitrogen interactions and salinity responses. Planta 218, 615-622.
  74. Britto, D.T. & Kronzucker H.J. (2004). Biology and Biotechnology of Nitrogen Acquisition in Rice: Implications for Food Security. In: Plant Ecophysiology, Vol. 3: Nitrogen Acquisition and Assimilation in Higher Plants (S. Amâio, & I.D.H. Stulen, eds.). Kluwer Academic Publishers, The Netherlands, pp. 261-281.
  75. Britto, D.T. & Kronzucker, H.J. (2003). Trans-stimulation of 13NH4+ efflux provides evidence for the cytosolic origin of tracer in the compartmental analysis of barley roots. Functional Plant Biology 30, 1233-1238.
  76. Britto, D.T. & Kronzucker, H.J. (2003). Cytosolic ion exchange dynamics: Insights into the mechanisms of component ion fluxes and their measurement. Functional Plant Biology 30, 355-363.
  77. Kronzucker, H.J., Szczerba, M.W., Britto, D.T. (2003). Cytosolic potassium homeostasis revisited: 42K-tracer analysis reveals set-point variations in [K+]. Planta 217, 540-546.
  78. Britto, D.T. & Kronzucker, H.J. (2003). Ion fluxes and cytosolic pool sizes: examining fundamental relationships in transmembrane flux regulation. Planta 217, 490-497.
  79. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M., Britto, D.T. (2003). Root ammonium transport efficiency as a determinant in forest colonization patterns: an hypothesis. Physiologia Plantarum 117, 164-170. (cover article) 
  80. Britto, D.T. & Kronzucker, H.J. (2003). The case for cytosolic NO3- heterostasis: a critique of a recently proposed model. Plant, Cell & Environment 26, 183-188.
  81. Britto, D.T., Siddiqi, M.Y., Glass, A.D.M., Kronzucker, H.J. (2002). Subcellular NH4+ flux analysis in leaf segments of wheat (Triticum aestivum L.). New Phytologist 155, 373-380.
  82. Britto, D.T. & Kronzucker, H.J. (2002). NH4+ toxicity in higher plants: A critical review. Journal of Plant Physiology 159, 567-584. (invited review)
  83. Glass, A.D.M., Britto, D.T., Kaiser, B.N., Kinghorn, J.R., Kronzucker, H.J., Kumar, A., Okamoto, M., Rawat, S., Siddiqi, M.Y., Unkles, S.E., Vidmar, J.J. (2002). The regulation of nitrate and ammonium transport systems in plants. Journal of Experimental Botany 53, 855-864.
  84. Kronzucker, H.J., Britto, D.T., Davenport, R., Tester, M. (2001). Ammonium toxicity and the real cost of transport. Trends in Plant Science 6, 335-337.
  85. Britto, D.T., Siddiqi, M.Y., Glass, A.D.M., Kronzucker, H.J. (2001). Futile transmembrane NH4+ cycling: A cellular hypothesis to explain ammonium toxicity in plants. Proceedings of the National Academy of Sciences, USA 98, 4255-4258.
  86. Britto, D.T. & Kronzucker, H.J. (2001). Constancy of nitrogen turnover kinetics in the plant cell: Insights into the integration of subcellular N fluxes. Planta 213, 175-181.
  87. Britto, D.T. & Kronzucker, H.J. (2001). Can unidirectional influx be measured in higher plants? A mathematical approach using parameters from efflux analysis. New Phytologist 150, 37-47.
  88. Britto, D.T., Glass, A.D.M., Kronzucker, H.J., Siddiqi, M.Y. (2001). Cytosolic concentrations and transmembrane fluxes of NH4+/NH3 . An examination of recent proposals. Plant Physiology 125, 523-526.
  89. Glass, A.D.M., Britto, D.T., Kaiser, B.N., Kronzucker, H.J., Kumar, A., Okamoto, M., Rawat, S.R., Siddiqi, M.Y., Silim, S.M., Vidmar, J.J., Zhou, D. (2001). Nitrogen transport in plants, with an emphasis on the regulation of fluxes to match plant demand. Journal of Plant Nutrition and Soil Science 164, 199-207.
  90. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M., Kirk, G.J.D. (2000). Comparative kinetic analysis of ammonium and nitrate acquisition by tropical lowland rice: Implications for rice cultivation and yield potential. New Phytologist 145, 471-476.
  91. Min, X.J., Siddiqi, M.Y., Glass, A.D.M., Guy, R.D., Kronzucker, H.J. (2000). A kinetic analysis of nitrate and ammonium influx in two early-successional tree species of temperate and boreal ecosystems. Plant, Cell & Environment 23, 321-328.
  92. Britto, D.T., Glass, A.D.M., Kronzucker, H.J. (2000). Studies of Nitrogen Absorption and Assimilation in Plants by Use of 13N. In: Isotope Production And Applications In The 21st Century: Proceedings of the 3rd International Conference on Isotopes (Nigel Stevenson, ed.). World Scientific Publ. Co., Singapore, pp. 433-435.
  93. Kirk, G.J.D. & Kronzucker, H.J. (2000). Nitrogen Uptake by Rice Roots. In: Carbon and Nitrogen Dynamics in Flooded Ecosystems (G.J.D. Kirk & D.C. Olk, eds.). International Rice Research Institute, IRRI, Makati City, Philippines, pp. 147-162.
  94. Bingham, I.J., Glass, A.D.M., Kronzucker, H.J., Robinson, D., Scrimgeour, C.M. (2000). Isotope techniques. In: Root Methods: A Handbook. pp. 365-402.
  95. Rawat, S.R., Silim, S.N., Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1999). AtAMT1 gene expression and NH4+ uptake in roots of Arabidopsis thaliana : Evidence for regulation by root glutamine levels. The Plant Journal 19, 143-152.
  96. Kronzucker, H.J., Glass, A.D.M., Siddiqi, M.Y. (1999). Inhibition of nitrate uptake by ammonium in barley: Analysis of component fluxes. Plant Physiology 120, 283-292.
  97. Min, X.J., Siddiqi, M.Y., Glass, A.D.M., Guy, R.D., Kronzucker, H.J. (1999). A comparative study of fluxes and compartmentation of nitrate and ammonium in early-successional tree species. Plant, Cell & Environment 22, 821-830.
  98. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M., Kirk, G.J.D. (1999). Nitrate-ammonium synergism in rice: A subcellular analysis. Plant Physiology 119, 1041-1046.
  99. Glass, A.D.M., Erner, Y., Hunt, T., Kronzucker, H.J., Okamoto, M., Rawat, S.R., Silim, S., Schjoerring, J.K., Siddiqi, M.Y., Vidmar, J.J., Wang, M.Y., Zhou, D. (1999). Inorganic Nitrogen Absorption by Plant Roots: Physiology and Molecular Biology . In: Plant Nutrition Molecular Biology and Genetics (G. Gissel-Nielsen & A. Jensen, eds.). Kluwer Academic, Wageningen, Netherlands, pp. 1-16.
  100. Kronzucker, H.J., Schjoerring, J.K., Erner, Y., Kirk, G.J.D., Siddiqi, M.Y., Glass, A.D.M. (1998). Dynamic interactions between root NH4+ influx and long-distance N translocation in rice: Insights into feedback processes. Plant & Cell Physiology 39, 1287-1293.
  101. Min, X.J., Siddiqi, M.Y., Guy, R.D., Glass, A.D.M., Kronzucker, H.J. (1998). Induction of nitrate uptake and nitrate reductase activity in trembling aspen and lodgepole pine. Plant, Cell & Environment 21, 1039-1046.
  102. Kronzucker, H.J. & Kirk, G.J.D. (1998). Importance of nitrate vs. ammonium for potential yield. In: Irrigated Rice Ecosystem. International Rice Research Institute, IRRI Research Reports, Makati City, Philippines, pp.12-13.
  103. Siddiqi, M.Y., Kronzucker, H.J., Britto, D.T., Glass, A.D.M. (1998). Growth of a tomato crop at reduced nutrient concentrations as a strategy to limit eutrophication. Journal of Plant Nutrition 21, 1879-1895.
  104. Kronzucker, H.J., Kirk, G.J.D., Siddiqi, M.Y., Glass, A.D.M. (1998). Effects of hypoxia on 13NH4+ fluxes in rice roots: Kinetics and compartmental analysis. Plant Physiology 116, 581-587.
  105. Glass, A.D.M., Erner, Y., Kronzucker, H.J., Schjoerring, J.K., Siddiqi, M.Y., Wang, M.Y. (1997). Ammonium fluxes into plant roots: Energetics, kinetics and regulation. Zeitschrift füanzenernäung und Bodenkunde 160, 261-268.
  106. Johnson, R.R., Glass, A.D.M., Kronzucker, H.J., Gelbort, Z., Venczel, E., Paul, M., Berkovits, D., Cavan, A., Kashiv, Y., Ghelberg, S. (1997). Measurement of aluminum transport in wheat at the cellular level. Nuclear Instruments and Methods in Physics Research (Section B) - Beam Interactions with Materials and Atoms 123, 283-286.
  107. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1997). Conifer root discrimination against soil nitrate and the ecology of forest succession. Nature 385, 59-61.
  108. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1996). Kinetics of NH4+ influx in spruce. Plant Physiology 110, 773-779.
  109. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1995). Analysis of 13NH4+ efflux in spruce roots: A test case for phase identification in compartmental analysis. Plant Physiology 109, 481-490.
  110. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1995). Kinetics of NO3- influx in spruce. Plant Physiology 109, 319-326.
  111. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1995). Compartmentation and flux characteristics of ammonium in spruce. Planta 196, 691-698.
  112. Kronzucker, H.J., Glass, A.D.M., Siddiqi, M.Y. (1995). Nitrate induction in spruce: An approach using compartmental analysis. Planta 196, 683-690.
  113. Kronzucker, H.J., Siddiqi, M.Y., Glass, A.D.M. (1995). Compartmentation and flux characteristics of nitrate in spruce. Planta 196, 674-682.


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