School of Agriculture, Food and Wine
Faculty of Sciences
Eligible to supervise Masters and PhD - email supervisor to discuss availability.
My research interest is all about nitrogen from simple molecule such as nitric oxide (NO) to more complex molecules including amino acids and proteins. Nitrogen (N) is an essential nutrient for plant growth and development. Therefore, N fertilisers are one of the highest input costs for crop productions. However, N use efficiency of crop plants are relatively low and excess fertilisers run off and cause pollutions. One of my research questions is how can plants use nitrogen fertilisers more efficiently? To answer this question, we try to find genetic diversity for N use and identify genes responsible for better N uptake and utilization in wheat. We also conduct research on grain quality especially protein content, which is an important criteria for grain classification, and highly influenced by N status of plants. We use genetic approaches to dissect the mechanisms of grain protein accumulation, and aim to increase protein content without compromising other good traits. My other interests include N uptake from roots and shoots, N transporters, and NO synthesis and signalling in plants.
I lead the nitrogen program of the ARC Industrial Transformation Research Hub for Wheat, and an ARC Linkage project.
For more information: http://www.wheathub.com.au/
Year Citation 2017 Plett, D., Garnett, T., & Okamoto, M. (2017). Molecular genetics to discover and improve nitrogen use efficiency in crop plants. In M. Hossain, T. Kamiya, D. Burritt, L. -S. Tran, & T. Fujiwara (Eds.), Plant Macronutrient Use Efficiency: Molecular and Genomic Perspectives in Crop Plants (pp. 93-122). Cambridge: Elsevier.
2016 Tricker, P., Haefele, S., & Okamoto, M. (2016). The interaction of drought and nutrient stress in wheat: Opportunities and limitations. In P. Ahmad (Ed.), Water Stress and Crop Plants: A Sustainable Approach (Vol. 2, pp. 695-710). United Kingdom: Wiley.
— Tricker, P. J., Haefele, S. M., & Okamoto, M. (n.d.). The interaction of drought and nutrient stress in wheat. In Water Stress and Crop Plants (pp. 695-710). John Wiley & Sons, Ltd.
Year Citation 2013 Anbalagan, R., Kovalchuk, N., Parent, B., Kovalchuk, A., Okamoto, M., Whitford, R., & Haefele, S. (2013). A phenotyping platform for transgenic wheat: Method and initial results. In J. Piantadosi, R. Anderssen, & J. Boland (Eds.), Proceedings - 20th International Congress on Modelling and Simulation, MODSIM 2013 (pp. 496-502). Adelaide, AUSTRALIA: MODELLING & SIMULATION SOC AUSTRALIA & NEW ZEALAND INC.
- ARC Linkage Project (LP140100239) 2015-2018 Small molecules with large effect: The dual role of nitrogen-containing metabolites in stress tolerance and nutrient recycling: Lead CI
- ARC Industrial Transformation Research Hub (IH130200027) 2015-2020 Wheat in a hot and dry climate: Original CI
Past Higher Degree by Research Supervision (University of Adelaide)
Date Role Research Topic Program Degree Type Student Load Student Name 2016 - 2021 Principal Supervisor Understanding Nitrogen Uptake, Partitioning and Remobilization to Improve Grain Protein Content in Wheat Doctor of Philosophy Doctorate Full Time Mrs Margaret Wambui Kirika 2016 - 2020 Co-Supervisor Understanding the interactions between biomass, grain yield and grain protein content in low and high protein wheat cultivars Doctor of Philosophy Doctorate Full Time Mr Vahid Rahimi-Eichi 2014 - 2018 Principal Supervisor Purine Catabolism in Wheat: Source of Nutrients and Protective Metabolites Doctor of Philosophy Doctorate Full Time Mr Alberto Casartelli 2012 - 2015 Co-Supervisor Long- and short-term nitrate uptake regulation in maize Doctor of Philosophy Doctorate Full Time Mr Luke Reid Holtham 2011 - 2015 Co-Supervisor Dissecting genetic variation for nitrogen use efficiency in wheat Doctor of Philosophy Doctorate Full Time Miss Saba Mahjourimajd 2009 - 2014 Co-Supervisor Characterisation of a Novel Family of Eukaryotic Ammonium Transport Proteins Doctor of Philosophy Doctorate Full Time Ms Danielle Mazurkiewicz 2009 - 2013 Co-Supervisor Evaluation of Nitrogen Use Efficiency (NUE) in Wheat Master of Agricultural Science Master Full Time Mr Bahaddin Abdullah Faraj 2009 - 2012 Co-Supervisor Characterization of GmSAT1 and Related Proteins Legume Nodules Doctor of Philosophy Doctorate Full Time Mr David Michael Chiasson
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