Megan Shelden

Dr Megan Shelden

Senior Lecturer

School of Agriculture, Food and Wine

College of Science

Eligible to supervise Masters and PhD - email supervisor to discuss availability.


Megan is a Senior Lecturer and Mortlock Fellow at the Waite Campus, University of Adelaide. She has extensive knowledge and expertise in plant biology. She is passionate about enhancing food security by improving crop yields in challenging soils, such as those affected by salinity and drought.Salinity affects an estimated 5.7 million hectares of land in Australia, posing significant environmental and agricultural challenges. The area of land affected by salinity will likely be accelerated with climate change. The economic cost associated with saline soils to the Australian farming industry is estimated to be around $1.5 billion annually. Megan's lab group is focused on unravelling the secrets of plants below the ground. Plant roots have a remarkable ability to adapt to stressful conditions like salinity, while continuing to grow. She explores how plant roots respond to these environmental stressors by altering their growth to increase their ability to access nutrients and water in the soil. Her expertise is multi-faceted and spans various disciplines, including root biology, plant physiology, plant biochemistry, molecular biology, and functional genomics.Currently, Megan is working on uncovering the molecular mechanisms that control and regulate root growth in response to salinity using barley as a model cereal crop. By studying barley, she aims to gain valuable information that can be applied to increase salinity tolerance in other vital Australian cereal crops, like wheat, to help reduce the significant financial cost of salinity on grain yield. Megan's expertise in her field extends beyond her research. She actively contributes to the Australian Society of Plant Scientists (ASPS), having served on the committee as a discipline representative and contributed to the establishment of a Gender, Equity and Diversity policy. Her involvement in the society allows her to connect with fellow experts and stay at the forefront of scientific advancements. Passionate about inspiring the next generation of plant and agricultural scientists through her teaching at the University of Adelaide, Megan encourages students to explore the fascinating world of plant science. She firmly believes in the power of education and hopes to nurture a diverse and inclusive community of budding scientists. Megan engages in promoting STEM (Science, Technology, Engineering, and Mathematics) to the wider community through events such as National Science Week. Her contribution to National Science Week was recognised by being the recipient of the ASPS Education and Outreach Award in 2022. She is a strong advocate for Women in STEM and has initiated the Women in Crop Science network at the Waite campus. Megan's innovative approaches to understanding crop root growth in challenging soils and ensuring food security for future generations, has secured over $1.3 million in grant funding from nationally competitive grant programs. She also has several highly cited publications in journals such as The Plant Journal and Journal of Experimental Botany. Megan is a committed researcher and passionate educator in plant science. Her work in understanding root systems and improving crop yields in challenging soils aims to make a significant contribution to agriculture and to a more sustainable future.

Current Projects:

Exploiting root traits for improved yields in salty soils

Megan's research is aimed at understanding the mechanisms that allow crop root systems to adapt to salinity and drought, thereby maintaining root growth and increasing soil exploration for nutrient and water uptake. Her current research aims to identify the molecular mechanisms that control and regulate root adaptation in response to salinity using barley (Hordeum vulgare L.) as a cereal model. This research will lead to the identification of root traits that can be incorporated into breeding programs to develop higher-yielding salt-tolerant crops. For more information see our recent publication in Frontiers in Plant Science:

https://www.frontiersin.org/articles/10.3389/fpls.2023.1120583/full

Barley root tip showing sodium accumulation in salt treated compared to non salt treated.
Sodium accumulation in barley roots grown in saline soil measured using laser ablation inductively coupled mass spectrometry (Shelden et al, The Plant Journal (2020) 101, 1462–1473 doi: 10.1111/tpj.14599)

 

Salt-tolerance in Grapevines

Megan is using grapevine as a model system to understand salt and water movement through plant systems; from the root to shoot. She aims to answer the question of how salt moves across the different tissues and major organs, how salt accumulates in root, leaf, and shoot cells, and how movement and accumulation is controlled by the diversity of transport mechanisms operating in plants. This will be incorporated into biophysical models (in collaboration with UniSA), to quantify the movement of salt through plant organs, tissues, and cells, from root to leaf.

 

Finding the missing links in salt and water transport in plants

Grain crops and horticultural plants use proteins called aquaporins to move water across cell membranes, however a group of these proteins can also transport some important nutrient ions as well as toxic sodium ions. This project aims to reveal the molecular pathways that regulate water and ion transport via aquaporins using advanced techniques in biophysics and molecular biology. The results will provide novel insights into how plants coordinate and adapt to changing water and salt conditions, addressing a missing link in how ions and water move in and out of plant vacuoles. Benefits include an expanded, innovative range of targets for plant breeding programs to improve plant productivity in our changing climate.

 

Lab Group

Staff

Dr. Yue Wu (Postdoctoral Fellow)

Ms. Daisy Edwards (Research Assistant)

Current Students

Ms Zhale Hekmati

Ms Iza Fatima

Mr Caoyang Wang

Completed Students

Dr. Ying Meng 

Dr. Apriadi Situmorang (Post-doc at UoA)

 

Research in the news:

https://www.abc.net.au/news/rural/rural-news/2015-12-11/salinity-research-goes-underground-for-better-yields/7018276

Radio interview with ABC rural:

https://www.abc.net.au/news/rural/2015-12-11/sheldon-saline-wheat/7018212

 

I am recruiting Honours, Masters, and PhD students to work on aspects of the various projects listed above. If interested, please contact Megan directly with an expression of interest and CV (megan.shelden@adelaide.edu.au).

Date Position Institution name
2022 - ongoing Senior Lecturer/ Mortock Fellow University of Adelaide
2020 - 2021 Lecturer The University of Adelaide
2019 - 2020 Research Fellow The University of Adelaide
2014 - 2019 ARC DECRA Fellow University of Adelaide
2009 - 2013 Research Fellow University of Melbourne
2007 - 2009 Postdoctoral Fellow Australian National University

Date Institution name Country Title
2023 Deakin University Australia Graduate Certificate in Higher Education (Learning and Teaching)
2008 University of Adelaide Australia PhD
1994 - 1997 University of Adelaide Australia Bachelor of Science (Honours)

Year Citation
2025 Wu, Y., Henderson, S. W., Walker, R. R., Shelden, M. C., & Gilliham, M. (2025). Expression of the grapevine anion transporter ALMT2 in Arabidopsis root decreases shoot Cl¯/NO₃¯ ratio under salt stress. Journal of Experimental Botany, 76(11), 3088-3104.
DOI Scopus3 WoS2 Europe PMC1
2025 Li, A., Yang, Y., Guo, Y., Li, Q., Zhou, A., Wang, J., . . . Wu, J. (2025). ZmASR6 positively regulates salt stress tolerance in maize. New Crops, 2, 100067.
DOI Scopus6
2023 Shelden, M. C., & Munns, R. (2023). Crop root system plasticity for improved yields in saline soils.. Front Plant Sci, 14, 1-14.
DOI Scopus83 WoS78 Europe PMC36
2020 Munns, R., Day, D. A., Fricke, W., Watt, M., Arsova, B., Barkla, B. J., . . . Tyerman, S. D. (2020). Energy costs of salt tolerance in crop plants. New Phytologist, 225(3), 1072-1090.
DOI Scopus418 WoS372 Europe PMC217
2020 Arsova, B., Foster, K. J., Shelden, M. C., Bramley, H., & Watt, M. (2020). Dynamics in plant roots and shoots minimize stress, save energy and maintain water and nutrient uptake. New Phytologist, 225(3), 1111-1119.
DOI Scopus45 WoS45 Europe PMC29
2020 Shelden, M. C., Gilbert, S. E., & Tyerman, S. D. (2020). A laser ablation technique maps differences in elemental composition in roots of two barley cultivars subjected to salinity stress. The Plant Journal, 101(6), 1462-1473.
DOI Scopus15 WoS14 Europe PMC7
2020 Ho, W. W. H., Hill, C. B., Doblin, M. S., Shelden, M. C., van de Meene, A., Rupasinghe, T., . . . Roessner, U. (2020). Integrative Multi-omics Analyses of Barley Rootzones under Salinity Stress Reveal Two Distinctive Salt Tolerance Mechanisms. Plant Communications, 1(3), 100031.
DOI Scopus39 WoS37 Europe PMC29
2017 Shelden, M., Vandeleur, R., Kaiser, B., & Tyerman, S. (2017). A comparison of petiole hydraulics and aquaporin expression in an anisohydric and isohydric cultivar of grapevine in response to water-stress induced cavitation. Frontiers in Plant Science, 8, 1893-1-1893-17.
DOI Scopus35 WoS35 Europe PMC19
2016 Shelden, M., Dias, D., Jayasinghe, N., Bacic, A., & Roessner, U. (2016). Root spatial metabolite profiling of two genotypes of barley (Hordeum vulgare L.) reveals differences in response to short-term salt stress. Journal of Exerimental Botany, 67(12), 3731-3745.
DOI Scopus127 WoS106 Europe PMC70
2013 Shelden, M., & Roessner, U. (2013). Advances in functional genomics for investigating salinity stress tolerance mechanisms in cereals. Frontiers in Plant Science, 4(article 123), 1-8.
DOI Scopus65 WoS50 Europe PMC26
2013 Shelden, M., Roessner, U., Sharp, R., Tester, M., & Bacic, A. (2013). Genetic variation in the root growth response of barley genotypes to salinity stress. Functional Plant Biology, 40(5), 516-530.
DOI Scopus51 WoS43 Europe PMC12
2011 Price, G., Shelden, M., & Howitt, S. (2011). Membrane topology of the cyanobacterial bicarbonate transporter, SbtA, and identification of potential regulatory loops. Molecular Membrane Biology, 28(5), 265-275.
DOI Scopus28 WoS25 Europe PMC25
2010 Shelden, M., Howitt, S., & Price, G. (2010). Membrane topology of the cyanobacterial bicarbonate transporter, BicA, a member of the SulP (SLC26A) family. Molecular Membrane Biology, 27(1), 12-22.
DOI Scopus49 WoS44 Europe PMC44
2009 Vandeleur, R., Mayo, G., Shelden, M., Gilliham, M., Kaiser, B., & Tyerman, S. (2009). The Role of Plasma Membrane Intrinsic Protein Aquaporins in Water Transport through Roots: Diurnal and Drought Stress Responses Reveal Different Strategies between Isohydric and Anisohydric Cultivars of Grapevine. Plant Physiology, 149(1), 445-460.
DOI Scopus443 WoS414 Europe PMC241
2009 Shelden, M., Howitt, S., Kaiser, B., & Tyerman, S. (2009). Identification and functional characterisation of aquaporins in the grapevine, Vitis vinifera. Functional Plant Biology, 36(12), 1065-1078.
DOI Scopus80 WoS76 Europe PMC31
2007 Shelden, M., Kaiser, B., & Tyerman, S. (2007). Identification and characterisation of aquaporins in the grapevine, <i>Vitis vinifera</i>. PHOTOSYNTHESIS RESEARCH, 91(2-3), 301.
WoS1
2003 Shelden, M. C., Loughlin, P., Tierney, M. L., & Howitt, S. M. (2003). Interactions between Charged Amino Acid Residues within Transmembrane Helices in the Sulfate Transporter SHST1. Biochemistry, 42(44), 12941-12949.
DOI Scopus12 WoS13 Europe PMC8
2001 Shelden, M. C., Loughlin, P., Tierney, M. L., & Howitt, S. M. (2001). Proline residues in two tightly coupled helices of the sulphate transporter, SHST1, are important for sulphate-transport. Biochemical Journal, 356(2), 589-594.
DOI Scopus26 WoS26 Europe PMC10
2001 Shelden, M. C., Dong, B., De Bruxelles, G. L., Trevaskis, B., Whelan, J., Ryan, P. R., . . . Udvardi, M. K. (2001). Arabidopsis ammonium transporters, atAMT1;1 and atAMT1;2, have different biochemical properties and functional roles. Plant and Soil, 231(1), 151-160.
DOI Scopus70 WoS60
2000 Khurana, O. K., Coupland, L. A., Shelden, M. C., & Howitt, S. M. (2000). Homologous mutations in two diverse sulphate transporters have similar effects. FEBS Letters, 477(1-2), 118-122.
DOI Scopus18 WoS18 Europe PMC14
2000 Sohlenkamp, C., Shelden, M., Howitt, S., & Udvardi, M. (2000). Characterization of Arabidopsis AtAMT2, a novel ammonium transporter in plants. FEBS Letters, 467(2-3), 273-278.
DOI Scopus109 WoS107 Europe PMC76
2000 Shelden, M., & Sinclair, R. (2000). Water relations of feral olive trees (Olea europaea) resprouting after severe pruning. Australian Journal of Botany, 48(5), 639-644.
DOI Scopus10 WoS10 Europe PMC2

Year Citation
2019 Tyerman, S., Munns, R., Fricke, W., Arsova, B., Barkla, B., Bose, J., . . . Wen, Z. (2019). Energy costs of salinity tolerance in crop plants. In New Phytologist Vol. 221 (pp. 25-29). UK: Wiley.
DOI Scopus58 WoS51 Europe PMC36
2002 Loughlin, P., Shelden, M. C., Tierney, M. L., & Howitt, S. M. (2002). Structure and function of a model member of the SulP transporter family. In Cell Biochemistry and Biophysics Vol. 36 (pp. 183-190). AUSTRALIA, COOLANGATTA: HUMANA PRESS INC.
DOI Scopus14 WoS13 Europe PMC13

Grains Research and Development Corporation (2025-2026); Establishing a new paradigm for salinity tolerance in cereals, $222,760

Charlick Endowment Fund (2025); University of Adelaide, $14,700

Research Small Equipment Support Scheme (2024), University of Adelaide, $11,000

UoA-UoN Seed Partnering Grant (2024), University of Adelaide, $10,000

Barbara Kidman Women's Fellowship (2024), University of Adelaide, $30,000

ARC Discovery Project (2022 - 2025); Finding the missing links in salt and water transport in plants, $489,236

ARC Discovery Project (2020 - 2023); Root-to-shoot: modeling the salt stress response of a plant vascular system, $420,000

ARC DECRA Fellow (2014 - 2017); Getting to the root of salt-tolerance in the model cereal crop, barley, $394,570

PRIF Catalyst Research Grant (2015 - 2016); Screening for salt-tolerance in wheat using impedance spectroscopy: A novel technique to reveal performance of the hidden half, $30,000

I contribute to teaching in: 

Foundations in Plant Science II

Viticulture II /A

 

 

Date Role Research Topic Program Degree Type Student Load Student Name
2025 Co-Supervisor Evaluating the resilience of emerging winegrape cultivars in Australian vineyards to multiple abiotic stresses Doctor of Philosophy Doctorate Full Time Mr Caoyang Wang
2025 Co-Supervisor Evaluating the resilience of emerging winegrape cultivars in Australian vineyards to multiple abiotic stresses Doctor of Philosophy Doctorate Full Time Mr Caoyang Wang
2024 Principal Supervisor Characterization of hydrotropism in crop plants using barley as a model system Doctor of Philosophy under a Jointly-awarded Degree Agreement with Doctorate Full Time Ms Iza Fatima
2024 Principal Supervisor Characterization of hydrotropism in crop plants using barley as a model system Doctor of Philosophy Doctorate Full Time Ms Iza Fatima
2023 Principal Supervisor Finding the Missing Links in Salt and Water Transport in Plants Doctor of Philosophy Doctorate Full Time Ms Zhale Hekmati
2023 Principal Supervisor Finding the Missing Links in Salt and Water Transport in Plants Doctor of Philosophy Doctorate Full Time Ms Zhale Hekmati

Date Role Research Topic Program Degree Type Student Load Student Name
2017 - 2023 Co-Supervisor The Role of GABA in Plant Salinity and Hypoxia Responses Doctor of Philosophy Doctorate Full Time Miss Ying Meng
2015 - 2019 Co-Supervisor Elucidation of the Ammonium Major Facilitator (AMF) Family in Plants Doctor of Philosophy Doctorate Full Time Mr Apriadi Situmorang

Date Role Committee Institution Country
2017 - 2019 Representative Australian Society of Plant Scientists Executive Discipline Cell Biology Australia

Date Role Membership Country
2015 - ongoing - Society of Experimental Biology -
1998 - ongoing Member Australian Society of Plant Scientists -

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