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Professor Oula Ghannoum

Oula GhannoumProfessor Oula Ghannoum graduated with a BSc (Honours) in Plant Biochemistry (UNSW, 1993) and obtained her PhD in Plant Physiology (WSU, 1998). She has >20 years of research experience in plant physiology and biochemistry. In 2001, Oula was awarded the prestigious ARC Postdoctoral Fellowship to work at RSBS, ANU, and in 2007, she was awarded an Independent Postdoctoral Fellowship at WSU. In 2010, Oula was appointed Senior Researcher at the Hawkesbury Institute for the Environment (HIE). She was promoted to Associate Professor in 2016.

Her current position includes the following academic and leadership roles:

  • Discipline Lead, Biological Sciences, Western Sydney University
  • Member of Professoriate Leadership Group, Western Sydney University
  • Associate Editor, Functional Plant Biology, CSIRO Publishing (2014-current)
  • Associate Editor, Annals of Botany, Oxford University Press (2021-current)
  • Node Leader/Deputy Program leader, ARC Centre of Excellence for Translational Photosynthesis, (opens in a new window) CoETP
  • Activity Leader (Program 2), Future Food Systems CRC, FFS-CRC (opens in a new window)

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Awards and Recognition

  • Biological Sciences Discipline Leader, Western Sydney University, 2019
  • Women in Research Leadership Program, Western Sydney University, 2014
  • VC Staff Development Award, Western Sydney University, 2011
  • Christine Wieneke New Researcher Award, Western Sydney University, 1998
  • Visiting Fellowship, Japanese Science and Technology, 1988

Teaching

  • Unit Coordinator, Plant Science (301272), Level 3, Undergraduate
  • Unit Coordinator, Plant-Climate Interactions in Controlled Environments (301357), Level 7, Diploma/Masters
  • Deputy Coordinator, Master of Research (MRes), HIE-WSU
  • Member, HDR committee, HIE, WSU

Research Interests

  • Photosynthesis (C4 photosynthesis, sugar signalling, water use efficiency, crop improvement)
  • Plant responses to the environment (global climate change)
  • Protected cropping (optimisation of yield potential and quality in vegetables and soft fruits)

Associate Professor Oula Ghannoum conducts research to advance the disciplines of ‘Photosynthesis’ and ‘Global Change Biology’. Oula is particularly passionate about developing innovative solutions for the two key challenges of the 21st Century; ‘Food Security’ and ‘Climate Change’.

Her research aims at discovering novel ways to improve crop yield by enhancing photosynthesis either directly or indirectly through feedback regulation. Her research group is genetically manipulating key sugar signalling pathways in source leaves of model C3 and C4 plants to elucidate how sugar perception regulates leaf photosynthesis and crop yield and quality. Her group is also exploring novel ways to improve water use efficiency and heat and drought tolerance of major cereal crops through improved understanding of leaf structure. This research underpins the global efforts aimed at closing the gap between current rates of food production and increasing global food demand.

Oula is utilising state-of-the-art smart-glasshouse technology to implement improved approaches for growing more nutritious vegetable crops with less energy, water and chemical input. This research aims at developing an innovative framework for using hyper-spectral imaging and machine learning to offer consumers new and high value vegetable varieties with certified quality assurance. This research will help transform the landscape of protected vegetable cropping in Australia.

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Supervision and Mentoring

Research opportunities:

Students who are passionate about Plant Biology can contact me if they are interested in pursuing a master or PhD research project on a topic aligned with my three research areas outlined above. Students with their own ideas about a related research field are also welcome. Visit the Graduate Research School (GRS) (opens in a new window) for information on conditions of admission and currently funded research projects.

Mentoring:

  1. 2021-2024: Dr Lily Chen, Research Fellow (ARCDP). Regulation of C4 photosynthesis by sugar sensing.
  2. 2016-2020: Dr Francisco Javier Cano Martín, Research Fellow (CoETP). Water use efficiency in C4 plants
  3. 2016-2017: Dr Christie Foster, Research Fellow (CoETP). Structure and function of pigment-protein complexes of C4 chloroplasts
  4. 2015-2019: Dr Alex Watson-Lazowski, Research Fellow (CoETP). Expression and isoform variation between C4 species in key photosynthetic genes
  5. 2015-2018: Dr Clémence Henry, Research Fellow (CoETP). Regulation of C4 photosynthesis by sugar sensing.
  6. 2010-2014: Dr Robert Sharwood, Research Fellow (WSU). Catalytic diversity of Rubisco in C4 plants
  7. 2014-2019: Ms Fiona Koller, Technical Officer (CoETP)
  8. 2015: Ms Samantha Prior, Technical Officer (CoETP)

PhD Supervision:

  1. Eranda Namal Jayasuriya (PhD, 2021-2024). Develop crop-based sensors for real-time monitoring and control under protected cropping. Supervisors: Ghannoum, Guo and He
  2. Yogesh Chaudhari (PhD, 2017-2021). Interplay between sugar sensing and C4 photosynthesis. Supervisors: Ghannoum and Furbank
  3. Xin He (2018-ongoing). Fruit development and quality of Capsicum annuum under Smart Glass and elevated CO2. Supervisors: Tissue, Chen, Ghannoum and Cazzonelli
  4. Urs Benning (PhD, 2017-2021). Comparative sugar sensing pathways in C3 and C4 plants. Supervisors: Ghannoum, Watson-Lazowski, Henry and Furbank
  5. Yazen Al-Salman (PhD, 2017-2020). Determinants of leaf water use efficiency in the C4 crop Sorghum bicolor. Supervisors: Ghannoum and Cano
  6. Walter Krystler Israel (PhD, graduated 2020). Carbon isotope discrimination and stomatal function in C4 grasses. Supervisors: Ghannoum, Chen and William-Stuart
  7. Julius Ver Sagun (PhD, graduated 2019). Environmental regulation of energetics of C4 photosynthesis. Supervisors: Ghannoum and Chow
  8. Sachin Chavan (PhD, graduated 2019): Responses of wheat photosynthesis and yield to elevated CO2 under heat and water stress. Supervisors: Ghannoum and Duursma.
  9. Varsha Pathare (PhD, graduated 2018): Grass and herb photosynthesis and productivity in a resource-limited Eucalyptus woodland. Supervisors: Ellsworth and Ghannoum
  10. Balasaheb Sonawane (PhD, graduated 2016): Environmental regulation of CO2 concentrating mechanisms in C4 grasses with different biochemical subtypes. Supervisors: Ghannoum, Sharwood and Whitney.
  11. Josephine Ontedhu (PhD, graduated 2015): Interactive effects of elevated carbon dioxide concentration, temperature and soil P on growth and physiology of eucalypts. Supervisors: Tissue, Ghannoum and Milham
  12. Harshini Pinto (PhD, graduated 2015): Resource use efficiency of C4 grasses with different evolutionary origins. Supervisors: Ghannoum, Tissue, Sharwood and Conroy.

Honours Supervision

  1. Simon Reeves (Honours, graduated 2013): Contrasting the effect of climate warming on the photosynthesis of Eucalyptus provenances. Supervisos: Sharwood and Ghannoum.
  2. Anthony Newton (Honours, graduated 2012): Investigating the molecular plasticity of C4 photosynthesis. Supervisors: Sharwood and Ghannoum.
  3. Gyro Sherwin (Honours, graduated 2011): Impact of industrial-age climate change on nitrogen uptake and partitioning in Eucalyptus. Supervisors: Ghannoum, George, Kannangara, Tissue
  4. Harshini Pinto (Honours, graduated 2010): Resource use efficiency of C4 grasses with different evolutionary origins. Supervisors: Tissue and Ghannoum

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Grants / Current Projects

    Boosting C4 photosynthesis to climate proof yields
    Co-Researcher: Rob Sharwood
    Partner/funding body: Australian Research Council (ARC) Discovery Program
    Period: 2023-2024

    Automated crop monitoring for protected cropping systems
    Co-Researchers: David Tissue, Rob Sharwood, Chris Cazzonelli, and Zhonghua Chen (SoSc)
    Partner/funding body: Grains Research and Development Corporation (GRDC)
    Period: 2023-2028

    Increasing intrinsic heat tolerance of wheat through improved genetics in source-sink relationship
    Co-Researchers: Zhonghua Chen and Jay Bose
    Partner/funding body: Grains Research and Development Corporation (GRDC)
    Period: 2023-2027

    Improving crop productivity by altering sugar sensing
    Co-Researcher: Rob Furbank
    Partner/funding body: Australian Research Council Centre of Excellence for Translational Photosynthesis
    Period: 2021

    Smart glass film impacts on energy use and productivity in greenhouse lettuce
    Co-Researchers: David Tissue, Chris Cazzonelli, Robert Sharwood and Zhonghua Chen
    Partner/funding body:  Future Food Systems Cooperative Research Centre
    Period: 2021-2022

    Can altered sugar sensing improve crop productivity?Co-Researchers: Rob Furbank and MJ Paul
    Partner/funding body: Australian Research Council Discovery
    Period: 2021-2023

    Real-time decision support system for remote monitoring of crops
    Co-Researchers: Brendan Choat and Ian Anderson
    Partner/funding body: Horticulture Innovation Australia
    Period: 2021

    IoT for Indoor Farming
    Co-Researchers: Wen Wu and Jun Young Kim
    Partner/funding body: Future Food Systems Cooperative Research Centre
    Period: 2020-2023

    Review of advances in high throughput sensing technologies for automated and fast phenotyping for trait extraction
    Partner/funding body: Future Food Systems Cooperative Research Centre
    Period: 2021

    Heat stress tolerance in Sorghum bicolor and in combination with elevated CO2, drought and phosphorous deficiency
    Co-Researchers: Javier Cano Martin
    Partner/funding body: Australian Research Council Centre of Excellence for Translational Photosynthesis
    Period: 2020

    Development of transcriptomic predictors of heat shock response in Sorghum bicolor
    Co-Researcher: Alex Watson-Lazowski
    Partner/funding body: Australian Research Council Centre of Excellence for Translational Photosynthesis
    Period: 2019

    Emerging leaders in protected cropping
    Co-Researchers: Zhonghua Chen, Ian Anderson, David Tissue, Yi-Chen Lan, Priti Krishna, Paul Holford, Vijay Jayasena, Basant Maheshwari, Andy Broderick and Dilupa Nakandala
    Partner/funding body: Horticulture Innovation Australia
    Period: 2017-2022

    research and operations to trial innovation glass and photovoltaic technologies in protected cropping
    Co-Researchers: David Tissue, Zhonghua Chen and Chris Cazzonelli
    Partner/funding body: Horticulture Innovation Australia
    Period: 2017-2020

    Will trees get enough nitrogen to sustain productivity in elevated CO2?
    Co-Researchers: Yolima Carrillo, David Ellsworth and Sönke Zaehle
    Partner/Funding Body: Australian Research Council Discovery
    Period: 2016-2018

    ARC Centre of Excellence for Translational Photosynthesis
    Co-Researchers: Murray Badger, Suzanne von Caemmerer, John Evans, Ghrham Farquhar, G Price, S Whitney, G Hammer, D Jordan, M Chen, Rob Furbank and W Quick
    Partner/funding body: Australian Research Council Centre of Excellence for Translational Photosynthesis
    Period: 2014-2020

    Is physiological flexibility of forest trees constrained by home climate in a rapidly warming world? Co-Researchers: Mark Tjoelker, John Drake, David Tissue and Peter Reich
    Partner/funding body: Australian Research Council Discovery
    Period: 2014-2016

    Crop traits for productivity in a high carbon dioxide world under drought and heat
    Co-Researchers: Muchael Tausz, Sabine Tausz-Posch, Remko Duursma, G Fitzgerald, R Armstrong, G O'Leary and J Nuttall
    Partner/funding body: Department of Agriculture, Forest and Fisheries
    Period: 2013-2016

    Rubisco for all climates: unlocking the enzyme's structure-function relations for more efficient photosynthesis
    Co-Researcher: SM Whitney
    Partner/funding body: Australian Research Council Discovery
    Period: 2012-2014

    Impacts of climate change on nitrogen uptake by eucalypt seedlings
    Co-Researcher: Paul Milham
    Partner/funding body: Australian Institute of Nuclear Science and Engineering
    Period: 2010

    Causes and consequences of the differences in leaf biochemistry and structure between NAD-ME and NADP-ME C4 grasses Partner/funding body: Australian Research Council Postdoctoral Fellowship
    Period: 2001-2003

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Media Coverage

Public Articles:

2020 The green shoots of recovery. https://www.openforum.com.au/the-green-shoots-of-recovery/

2020 Protected cropping and resilience of the food supply chain. https://www.openforum.com.au/protected-cropping-and-resilience-of-the-food-supply-chain/

Videos:

2021: Video by the Australian Academy of Science: Video: https://youtu.be/rHO7vorqTlA

2021: Follow-up interviews on Arabic community radio: https://www.sbs.com.au/language/arabic/audio/improving-photosynthesis-our-best-bet-to-create-a-food-secure-world

https://www.facebook.com/watch/?v=474781293680443

2017: The Big Picture: Is China the new food market? Interview by Greg Navarro, CGTN on Food Security. https://youtu.be/rwxooxRz3pc

2017: Interview by Greg Navarro, CGTN on Desertification. https://youtu.be/rwxooxRz3pc

Media Releases:

2021: AAS CoETP: https://www.scimex.org/newsfeed/improving-photosynthesis-our-best-bet-to-create-a-food-secure-world

2019: Too much sugar doesn't put the brakes on turbocharged crops: https://phys.org/news/2019-11-sugar-doesnt-turbocharged-crops.html

2019: Narrow leaves make better crops for future climates: https://www.arc.gov.au/news-publications/media/research-highlights

2017: Australia’s native grasses give clues about crop responses to global warming: http://photosynthesis.org.au/australias-native-grasses-give-clues-about-crop-responses-to-global-warming/

http://www.arc.gov.au/australia%E2%80%99s-native-grasses-give-clues-about-crop-responses-global-warming-23-october-2017

2017: Proposed Benefits Of Rising Carbon Dioxide Are More Likely Driven By Water: https://www.westernsydney.edu.au/hie/news/proposed_benefits_of_rising_carbon_dioxide_are_more_likely_driven_by_water

2016: Panic grass could be the response to uncertain food future: http://www.anu.edu.au/news/all-news/common-grass-could-help-boost-food-security

2016: Common grass could help boost food security: http://www.anu.edu.au/news/all-news/common-grass-could-help-boost-food-security

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Selected Publications

https://scholar.google.com.au/citations?user=xwvXQtUAAAAJ&hl=en

Selected Publications

Follow me on Google Scholar (opens in a new window)

Book Chapters

Ghannoum O, von Caemmerer S, Taylor N, Millar AH (2013). CO2 assimilation and respiration in "Plants in Action". 2nd edition: http://plantsinaction.science.uq.edu.au (opens in a new window). (Eds. R Munns, S Schmidt, C Beveridge). Australian Society of Plant Scientists.

Ghannoum O, Evans JR, von Caemmerer S, (2011) Nitrogen and water use efficiency of C4 plants, in C4 Photosynthesis and Related CO2 Concentrating Mechanisms, Advances in Photosynthesis and Respiration series, pp 129 - 146 (Eds) Raghavendra AS, Sage RF, Springer, Berlin

Ghannoum O, Searson M, Conroy J, (2006) Nutrient and water demands of plants under climate change, in Agroecosystems in a Changing Climate, Advances in Agroecology Series 12, (Eds) Newton PCD, Edwards G, Carran A, & Niklaus P, CRC Press, Boca Raton, FL, USA, pp 53–83

Journal Articles

Jayasuriya N, Guo Y, Hu W, Ghannoum O, (2024) 'Machine vision based plant height estimation for protected crop facilities', Computers and Electronics in Agriculture, vol.218, art. no.108669

Al-Salman Y, Cano FJ, Pan L, Koller F, Pineiro J, Jordan D, Ghannoum O, (2023) 'Anatomical drivers of stomatal conductance in sorghum lines with different leaf widths grown under different temperatures', Plant Cell and Environment, vol.46, no.7, pp 2142 - 2158

Al-Salman Y, Ghannoum O, Cano FJ, (2023) 'Elevated [CO2] negatively impacts C-4 photosynthesis under heat and water stress without penalizing biomass', Journal of Experimental Botany, vol.74, no.9, pp 2875-2890 , SI

Al-Salman Y, Ghannoum O, Cano FJ, (2023) 'Midday water use efficiency in sorghum is linked to faster stomatal closure rate, lower stomatal aperture and higher stomatal density', Plant Journal, vol.115, no.6, pp 1661-1676

Benning UF, Chen L, Watson-Lazowski A, Henry C, Furbank RT, Ghannoum O, (2023) 'Spatial expression patterns of genes encoding sugar sensors in leaves of C4 and C3 grasses', Annals of botany, vol.131, no.6, pp 985-1000

Chavan SG, He X, Maier C, Alagoz Y, Anwar S, Chen Z-H, Ghannoum O, Cazzonelli CI, Tissue DT, (2023) 'An energy-saving glasshouse film reduces seasonal, and cultivar dependent Capsicum yield due to light limited photosynthesis', Annals of Agricultural Sciences, vol.68, no.1, pp 21 - 35

Maier CR, Chavan SG, Klause N, Liang W, Cazzonelli CI, Ghannoum O, Chen Z-H, Tissue DT, (2023) 'Light blocking film in a glasshouse impacts Capsicum annuum L. yield differentially across planting season', Frontiers in Plant Science, vol.14, Article no.1277037

Retta MA, Yin XY, Ho QT, Watte R, Berghuijs HNC, Verboven P, Saeys W, Cano FJ, Ghannoum O, Struik PC, Nicolai BM, (2023) 'The role of chloroplast movement in C-4 photosynthesis: a theoretical analysis using a three-dimensional reaction-diffusion model for maize', Journal of Experimental Botany, vol.74, no.14, pp 4125-4142

Chavan SG, Duursma RA, Tausz M, Ghannoum O, (2022) 'Moderate heat stress prevented the observed biomass and yield stimulation caused by elevated CO2 in two well-watered wheat cultivars', Plant Molecular Biology, vol.110, no.s4-5, pp 365-384

He X, Chavan SG, Hamoui Z, Maier C, Ghannoum O, Chen ZH, Tissue DT, Cazzonelli CI, (2022) 'Smart Glass Film Reduced Ascorbic Acid in Red and Orange Capsicum Fruit Cultivars without Impacting Shelf Life', Plants-Basel, vol.11, no.7, Article no.985

Israel WK, Watson-Lazowski A, Chen Z-H, Ghannoum O, (2022) 'High intrinsic water use efficiency is underpinned by high stomatal aperture and guard cell potassium flux in C3and C4grasses grown at glacial CO2and low light', Journal of Experimental Botany, vol.73, no.5, pp 1546 - 1565

Lin T, Goldsworthy M, Chavan S, Liang W, Maier C, Ghannoum O, Cazzonelli C, Tissue DT, Lan Y-C, Sethuvenkatraman S, Lin H, Jia B, Chen Z-H, (2022) 'A novel cover material improves cooling energy and fertigation efficiency for glasshouse eggplant production', Energy, vol.251, Article no.123871

Pan L, George-Jaeggli B, Borrell A, Jordan D, Koller F, Al-Salman Y, Ghannoum O, Cano FJ, (2022) 'Coordination of stomata and vein patterns with leaf width underpins water-use efficiency in a C-4 crop', Plant Cell and Environment, vol.45, no.6, pp 1612-1630

Ver Sagun J, Chow WS, Ghannoum O, (2022) 'Leaf pigments and photosystems stoichiometry underpin photosynthetic efficiency of related C-3, C-C-4 and C-4 grasses under shade', Physiologia Plantarum, vol.174, no.6, Article no.e13819

Yamori W, Ghannoum O, (2022) 'Adaptation of plants to a high CO2 and high-temperature world', Plant Molecular Biology, vol.110. no.s 4-5, pp. 301-303

Falster DS, Gallagher RV, Wenk E, Wright IJ, Indiarto D, Andrew SC, Baxter C, Lawson J, Allen S, Fuchs A, Monro A, Kar F, Adams MA, Ahrens CW, Alfonzetti M, Angevin T, Apgaua DMG, Arndt A, Atkin OK, Atkinson J, Auld TD, Baker A, von Balthazar M, Bean A, Blackman CJ, Bloomfield K, Bowman DMJS, Bragg J, Brodribb TJ, Buckton G, Burrows G, Caldwell E, Camac J, Carpenter R, Catford JA, Cawthray GR, Cernusak LA, Chandler G, Chapman AR, Cheal D, Cheesman AW, Chen S-C, Choat B, Clinton B, Clode PL, Coleman H, Cornwell WK, Cosgrove M, Crisp M, Cross E, Crous KY, Cunningham S, Curran T, Curtis E, Daws MI, DeGabriel JL, Denton MD, Dong N, Du P, Duan H, Duncan DH, Duncan RP, Duretto M, Dwyer JM, Edwards C, Esperon-Rodriguez M, Evans JR, Everingham SE, Farrell C, Firn J, Fonseca CR, French BJ, Frood D, Funk JL, Geange SR, Ghannoum O, Gleason SM, Gosper CR, Gray E, Groom PK, Grootemaat S, Gross C, Guerin G, Guja L, Hahs AK, Harrison MT, Hayes PE, Henery M, Hochuli D, Howell J, Huang G, Hughes L, Huisman J, Ilic J, Jagdish A, Jin D, Jordan G, Jurado E, Kanowski J, Kasel S, Kellermann J, Kenny B, Kohout M, Kooyman RM, Kotowska MM, Lai HR, Laliberté E, Lambers H, Lamont BB, Lanfear R, van Langevelde F, Laughlin DC, Laugier-Kitchener B-A, Laurance S, Lehmann CER, Leigh A, Leishman MR, Lenz T, Lepschi B, Lewis JD, Lim F, Liu U, Lord J, Lusk CH, Macinnis-Ng C, McPherson H, Magallón S, Manea A, López-Martinez A, Mayfield M, McCarthy JK, Meers T, van der Merwe M, Metcalfe DJ, Milberg P, Mokany K, Moles AT, Moore BD, Moore N, Morgan JW, Morris W, Muir A, Munroe S, Nicholson A, Nicolle D, Nicotra AB, Niinemets Ü, North T, O’Reilly-Nugent A, O’Sullivan OS, Oberle B, Onoda Y, Ooi MKJ, Osborne CP, Paczkowska G, Pekin B, Guilherme Pereira C, Pickering C, Pickup M, Pollock LJ, Poot P, Powell JR, Power SA, Prentice IC, Prior L, Prober SM, Read J, Reynolds V, Richards AE, Richardson B, Roderick ML, Rosell JA, Rossetto M, Rye B, Rymer PD, Sams MA, Sanson G, Sauquet H, Schmidt S, Schönenberger J, Schulze E-D, Sendall K, Sinclair S, Smith B, Smith R, Soper F, Sparrow B, Standish RJ, Staples TL, Stephens R, Szota C, Taseski G, Tasker E, Thomas F, Tissue DT, Tjoelker MG, Tng DYP, de Tombeur F, Tomlinson K, Turner NC, Veneklaas EJ, Venn S, Vesk P, VlasveldC , Vorontsova MS, Warren CA, Warwick N, Weerasinghe LK, Wells J, Westoby M, White M, Williams NSG, Wills J, Wilson PG, Yates C, Zanne AE, Zemunik G, Ziemińska K, (2021) 'AusTraits, a curated plant trait database for the Australian flora', Scientific Data, vol.8, no.1, Article no.254

He X, Maier C, Chavan S, Chenchen Z, Alagoz Y, Cazzonelli CI, Ghannoum O, Tissue DT, Chen ZH, (2021) 'Light-altering Cover Materials and Sustainable Greenhouse Production of Vegetables: A Review', Plant Growth Regulation, vol.95, pp 1-17

Sagun JV, Badger MR, Chow WS, Ghannoum O, (2021) 'Mehler reaction plays a role in C3 and C4 photosynthesis under shade and low CO2', Photosynthesis Research, doi 10.1007/s11120-021-00819-1

Zhao C, Chavan S, He X, Zhou M, Cazzonelli CI, Chen Z-H, Tissue DT, Ghannoum O, (2021) 'Smart glass impacts stomatal sensitivity of greenhouse Capsicum through altered light', Journal of Experimental Botany, vol.72, no.8, pp 3235–3248

Chavan SG, Maier C, Alagoz Y, Filipe JC, Warren CR, Lin H, Jia BH, Loik ME, Cazzonelli CI, Chen ZHH, Ghannoum O, Tissue DT, (2020) 'Light-limited photosynthesis under energy-saving film decreases eggplant yield', Food and Energy Security, Article no.e245

Henry C, Watson-Lazowski A, Oszvald M, Griffiths C, Paul MJ, Furbank RT, Ghannoum O, (2020) 'Sugar sensing responses to low and high light in leaves of the C4 model grass Setaria viridis', Journal of experimental botany, vol.71, no.3, pp 1039-1052

Chavan SG, Duursma RA, Tausz M, Ghannoum O, (2019) 'Elevated CO2 alleviates the negative impact of heat stress on wheat physiology but not on grain yield', Journal of experimental botany, vol.70, no.21, pp 6447-6459

Hernández-Prieto MA, Foster C, Watson-Lazowski A, Ghannoum O, Chen M, (2019) 'Comparative analysis of thylakoid protein complexes in the mesophyll and bundle sheath cells from C3, C4 and C3 –C4 Paniceae grasses', Physiologia Plantarum, vol.166, no.1, pp 134-147

Kumarathunge DP, Medlyn BE, Drake JE, Tjoelker MG, Aspinwall MJ, Battaglia M, Cano FJ, Carter KR, Cavaleri MA, Cernusak LA, Chambers JQ, Crous KY, De Kauwe MG, Dillaway DN, Dreyer E, Ellsworth DS, Ghannoum O, Han QM, Hikosaka K, Jensen AM, Kelly JWG, Kruger EL, Mercado LM, Onoda Y, Reich PB, Rogers A, Slot M, Smith NG, Tarvainen L, Tissue DT, Togashi HF, Tribuzy ES, Uddling J, Varhammar A, Wallin G, Warren JM, Way DA, (2019) 'Acclimation and adaptation components of the temperature dependence of plant photosynthesis at the global scale', New Phytologist, vol.222, no.2, pp 768-784

Ver Sagun J, Badger MR, Chow WS, Ghannoum O, (2019) 'Cyclic electron flow and light partitioning between the two photosystems in leaves of plants with different functional types', Photosynthesis Research, vol.142, no. 3, pp 321-334

Way DA, Aspinwall MJ, Drake JE, Crous KY, Campany CE, Ghannoum O, Tissue DT, Tjoelker MG, (2019) 'Responses of respiration in the light to warming in field-grown trees: a comparison of the thermal sensitivity of the Kok and Laisk methods', New Phytologist, vol.222, no.1, pp 132-143

Wujeska-Klause A, Crous KY, Ghannoum O, Ellsworth DS, (2019) 'Leaf age and eCO2 both influence photosynthesis by increasing light harvesting in mature Eucalyptus tereticornis at EucFACE', Environmental and Experimental Botany, vol.167, Article no.103857

Wujeska-Klause A, Crous KY, Ghannoum O, Ellsworth DS, (2019) 'Lower photorespiration in elevated CO2 reduces leaf N concentrations in mature Eucalyptus trees in the field', Global Change Biology, vol.25, no.4, pp 1282-1295

Crous KY, Drake JE, Aspinwall MJ, Sharwood RE, Tjoelker MG, Ghannoum O, (2018) 'Photosynthetic capacity and leaf nitrogen decline along a controlled climate gradient in provenances of two widely distributed Eucalyptus species', Global Change Biology, vol.24, no.10, pp 4626-4644

Sonawane BV, Sharwood RE, Whitney S, Ghannoum O, (2018) 'Shade compromises the photosynthetic efficiency of NADP-ME less than that of PEP-CK and NAD-ME C-4 grasses', Journal of Experimental Botany, vol.69, no.12, pp 3053-3068

Taylor SH, Aspinwall MJ, Blackman CJ, Choat B, Tissue DT, Ghannoum O, (2018) 'CO2 availability influences hydraulic function of C3 and C4 grass leaves', Journal of Experimental Botany, vol.69, no.10, pp 2731-2741

Watson-Lazowski A, Papanicolaou A, Sharwood R, Ghannoum O, (2018) 'Investigating the NAD-ME biochemical pathway within C-4 grasses using transcript and amino acid variation in C-4 photosynthetic genes', Photosynthesis Research, vol.138, no.2, pp 233-248

Drake JE, Varhammar A, Kumarathunge D, Medlyn BE, Pfautsch S, Reich PB, Tissue DT, Ghannoum O, Tjoelker MG, (2017) 'A common thermal niche among geographically diverse populations of the widely distributed tree species Eucalyptus tereticornis: No evidence for adaptation to climate-of-origin', Global Change Biology, vol.23, no.12, pp 5069-5082

Li CJ, Jackson P, Lu X, Xu CH, Cai Q, Basnayake J, Lakshmanan P, Ghannoum O, Fan YH, (2017) 'Genotypic variation in transpiration efficiency due to differences in photosynthetic capacity among sugarcane-related clones', Journal of Experimental Botany, vol.68, no.9, pp 2377-2385

Pathare VS, Crous KY, Cooke J, Creek D, Ghannoum O, Ellsworth DS, (2017) 'Water availability affects seasonal CO2-induced photosynthetic enhancement in herbaceous species in a periodically dry woodland', Global Change Biology, vol.23, no.12, pp 5164-5178

Sharwood RE, Crous KY, Whitney SM, Ellsworth DS, Ghannoum O, (2017) 'Linking photosynthesis and leaf N allocation under future elevated CO2 and climate warming in Eucalyptus globulus', Journal of Experimental Botany, vol.68, no.5, pp 1157-1167

Sonawane BV, Sharwood RE, von Caemmerer S, Whitney SM, Ghannoum O, (2017) 'Short-term thermal photosynthetic responses of C-4 grasses are independent of the biochemical subtype', Journal of Experimental Botany, vol.68, no.20, pp 5583-5597

Von Caemmerer S, Ghannoum O, Furbank RT, (2017) 'C4 photosynthesis: 50 years of discovery and innovation', Journal of Experimental Botany, vol.68, no.2, pp 97-102

Aspinwall MJ, Drake JE, Campany C, Vårhammar A, Ghannoum O, Tissue DT, Reich PB, Tjoelker MG, (2016) 'Convergent acclimation of leaf photosynthesis and respiration to prevailing ambient temperatures under current and warmer climates in Eucalyptus tereticornis', New Phytologist, vol.212, no.2, pp 354-367

Ghannoum O, (2016) 'How can we breed for more water use-efficient sugarcane?', Journal of Experimental Botany, vol.67, no.3, pp 557-559

Pinto H, Powell JR, Sharwood RE, Tissue DT, Ghannoum O, (2016) 'Variations in nitrogen use efficiency reflect the biochemical subtype while variations in water use efficiency reflect the evolutionary lineage of C4 grasses at inter-glacial CO2', Plant, Cell and Environment, vol.39, no.3, pp 514-526

Sharwood RE, Ghannoum O, Kapralov MV, Gunn LH, Whitney SM, (2016) 'Temperature responses of Rubisco from Paniceae grasses provide opportunities for improving C 3 photosynthesis', Nature Plants, vol.2, Article no.16186

Sharwood RE, Ghannoum O, Whitney SM, (2016) 'Prospects for improving CO2 fixation in C3-crops through understanding C4-Rubisco biogenesis and catalytic diversity', Current Opinion in Plant Biology, vol.31, pp 135-142

Sharwood RE, Sonawane BV, Ghannoum O, Whitney SM, (2016) 'Improved analysis of C4 and C3 photosynthesis via refined in vitro assays of their carbon fixation biochemistry', Journal of Experimental Botany, vol.67, no.10, pp 3137-3148

Drake JE, Aspinwall MJ, Pfautsch S, Rymer PD, Reich PB, Smith RA, Crous KY, Tissue DT, Ghannoum O, Tjoelker MG, (2015) 'The capacity to cope with climate warming declines from temperate to tropical latitudes in two widely distributed Eucalyptus species', Global Change Biology, vol.21, no.1, pp 459-472

Lin Y-S, Medlyn BE, Duursma RA, Prentice IC, Wang H, Baig S, Eamus D, De Dios VR, Mitchell P, Ellsworth DS, De Beeck MO, Wallin G, Uddling J, Tarvainen L, Linderson M-L, Cernusak LA, Nippert JB, Ocheltree TW, Tissue DT, Martin-StPaul NK, Rogers A, Warren JM, De Angelis P, Hikosaka K, Han Q, Onoda Y, Gimeno TE, Barton CVM, Bennie J, Bonal D, Bosc A, Löw M, Macinins-Ng C, Rey A, Rowland L, Setterfield SA, Tausz-Posch S, Zaragoza-Castells J, Broadmeadow MSJ, Drake JE, Freeman M, Ghannoum O, Hutley LB, Kelly JW, Kikuzawa K, Kolari P, Koyama K, Limousin J-M, Meir P, Da Costa ACL, Mikkelsen TN, Salinas N, Sun W, Wingate L, (2015) 'Optimal stomatal behaviour around the world', Nature Climate Change, vol.5, no.5, pp 459-464

Chehine C, Holford P, Ghannoum O, Collins D, Conroy JP, Milham PJ, (2014) 'Transpiration influences cadmium uptake by baby leaf Spinach (Spinacia Oleracea L.)', American Journal of Agricultural and Biological Science, vol.9, no.4, pp 523-533

Pinto H, Sharwood RE, Tissue DT, Ghannoum O (2014). Photosynthesis of C3, C3-C4 and C4 grasses at glacial CO2. Journal of Experimental Botany, vol.65 , no.13 , pp 3669-3681 , Special Issue SI.

Sharwood RE, Sonawane BV, Ghannoum O, (2014) 'Photosynthetic flexibility in maize exposed to salinity and shade', Journal of Experimental Botany, vol.65, no.13, pp 3715-3724 Special Issue: SI

von Caemmerer S, Ghannoum O, Pengelly JL, Cousins AB (2014). Carbon isotope discrimination as a tool to explore C4 photosynthesis. Journal of Experimental Botany, vol.65, no.13 , pp 3459-3470 , Special Issue SI.

Anderson IC, Drigo B, Keniry K, Ghannoum O, Chambers SM, Tissue DT, Cairney JW, (2013) 'Interactive effects of preindustrial, current and future atmospheric CO2 concentrations and temperature on soil fungi associated with two Eucalyptus species', FEMS Microbiology Ecology, vol.83, no.2, pp 425-437

De Dios VR, Turnbull MH, Barbour MM, Ontedhu J, Ghannoum O, Tissue DT, (2013) 'Soil phosphorous and endogenous rhythms exert a larger impact than CO 2 or temperature on nocturnal stomatal conductance in Eucalyptus tereticornis', Tree Physiology, vol.33, no.11, pp 1206-1215

Franks PJ, Adams MA, Amthor JS, Barbour MM, Berry JA, Ellsworth DS, Farquhar GD, Ghannoum O, Lloyd J, McDowell N, Norby RJ, Tissue DT, von Caemmerer S, (2013) 'Sensitivity of plants to changing atmospheric CO2 concentration: From the geological past to the next century', New Phytologist, vol.197, no.4, pp 1077-1094

Lewis JD, Smith RA, Ghannoum O, Logan BA, Phillips NG, Tissue DT, (2013) 'Industrial-age changes in atmospheric [CO2] and temperature differentially alter responses of faster- and slower-growing Eucalyptus seedlings to short-term drought', Tree Physiology, vol.33, no.5, pp 475-488

Sherwin GL, George L, Kannangara K, Tissue DT, Ghannoum O, (2013) 'Impact of industrial-age climate change on the relationship between water uptake and tissue nitrogen in eucalypt seedlings', Functional Plant Biology, vol.40, no.2, pp 201-212

Smith RA, Lewis JD, Ghannoum O, Tissue DT, (2012) 'Leaf structural responses to pre-industrial, current and elevated atmospheric [CO2] and temperature affect leaf function in Eucalyptus sideroxylon', Functional Plant Biology, vol.39, no.4, pp 285-296

Xu C-Y, Salih A, Ghannoum O, Tissue DT, (2012) 'Leaf structural characteristics are less important than leaf chemical properties in determining the response of leaf mass per area and photosynthesis of Eucalyptus saligna to industrial-age changes in [CO2] and temperature', Journal of Experimental Botany, vol.63, no.16, pp 5829-5841

Ghannoum O, Way DA, (2011) 'On the role of ecological adaptation and geographic distribution in the response of trees to climate change', Tree Physiology, vol.31, no.12, pp 1273-1276

Phillips NG, Attard RD, Ghannoum O, Lewis JD, Logan BA, Tissue DT, (2011) 'Impact of variable [CO2] and temperature on water transport structure-function relationships in Eucalyptus', Tree Physiology, vol.31, pp 945-952

Pinto H, Tissue DT, Ghannoum O, (2011) 'Panicum milioides (C3-C4) does not have improved water or nitrogen economies relative to C3 and C4 congeners exposed to industrial-age climate change', Journal of Experimental Botany, vol.62, pp 3223-3234

Logan BA, Hricko C, Lewis JD, Ghannoum O, Phillips NG, Smith RA, Conroy JP, Tissue DT, (2010) 'Examination of pre-industrial and future [CO2] reveals the temperature-dependent CO2 sensitivity of light energy partitioning at PSII in eucalypts', Functional Plant Biology, vol.37, pp 1041-1049

Ghannoum O, Phillips NG, Sears MA, Logan BA, Lewis JD, Conroy JP, Tissue DT, (2010) 'Photosynthetic responses of two eucalypts to industrial-age changes in atmospheric [CO2] and temperature', Plant, Cell and Environment, vol.33, pp 1671-1681

Edwards EJ, Osborne CP, Strömberg CAE, Smith SA, Bond WJ, Christin P-A, Cousins AB, Duvall MR, Fox DL, Freckleton RP, Ghannoum O, Hartwell J, Huang Y, Janis CM, Keeley JE, Kellogg EA, Knapp AK, Leakey ADB, Nelson DM, Saarela JM, Sage RF, Sala OA, Salamin N, Still CJ, Tipple B, (2010) 'The origins of C4 grasslands: Integrating evolutionary and ecosystem science', Science, vol.328, pp 587-591

Cousins AB, Ghannoum O, von Caemmerer S, Badger MR, (2010) 'Simultaneous determination of Rubisco carboxylase and oxygenase kinetic parameters in Triticum aestivum and Zea mays using membrane inlet mass spectrometry', Plant, Cell and Environment, vol.33, pp 444-452

Ghannoum O, Phillips NG, Conroy JP, Smith RA, Attard RD, Woodfield R, Logan BA, Lewis JD, Tissue DT, (2010) 'Exposure to pre-industrial, current and future atmospheric [CO2] and temperature differentially affects growth and photosynthesis in Eucalyptus', Global Change Biology, vol.16, pp 303-319

Ghannoum O, (2009) 'C4 photosynthesis and water stress', Annals of Botany, vol.103, pp 635-644 (Invited Review)

Ghannoum O, Paul MJ, Ward JL, Beale MH, Corol D-I, Conroy JP, (2008) 'The sensitivity of photosynthesis to phosphorus deficiency differs between C3 and C4 tropical grasses', Functional Plant Biology, vol.35, pp 213-221

Ghannoum O, Conroy JP, (2007) 'Phosphorus deficiency inhibits growth in parallel with photosynthesis in a C3 (Panicum laxum) but not two C4 (P. coloratum and Cenchrus ciliaris) grasses', Functional Plant Biology, vol.34, pp 72-81

Dwyer SA, Ghannoum O, Nicotra A, von Caemmerer S, (2007) 'High temperature acclimation of C4 photosynthesis is linked to changes in photosynthetic biochemistry', Plant, Cell and Environment, vol.30, pp 53-66

Ghannoum O, Evans JR, Chow WS, Andrews TJ, Conroy JP, and von Caemmerer S, (2005) 'Faster Rubisco is the key to superior nitrogen use efficiency in NADP-ME relative to NAD-ME C4 grasses', Plant Physiology, vol.137, pp 638-650

Pellny T, Ghannoum O, Conroy JP, Schluepmann H, Smeekens S, Andralojc J, Krause K-P, Goddijn O, Paul MJ, (2004) 'Genetic modification of photosynthesis with E. coli genes for trehalose synthesis', Plant Biotechnology Journal, vol.2, pp 71-82

*Siebke K, Ghannoum O, Conroy JP, Badger MR, von Caemmerer S, (2003) 'Photosynthetic oxygen exchange in C4 grasses: the role of oxygen as electron acceptor', Plant, Cell and Environment, vol.26, pp 1963-1972

*Ghannoum O, Conroy JP, Driscoll SP, Paul MJ, Foyer CH, and Lawlor DW, (2003) 'Non-stomatal limitations are responsible for drought-induced photosynthetic inhibition in four C4 grasses', New Phytologist, vol.159, pp 835-844

Siebke K, Ghannoum O, Conroy JP, von Caemmerer S, (2002) 'Elevated CO2 increases the leaf temperature of two glasshouse-grown C4 grasses', Functional Plant Biology, vol.29, pp 1377-1384

*Ghannoum O, von Caemmerer S, Conroy JP, (2002) 'The effect of drought on plant water use efficiency of 9 NAD-ME and 9 NADP-ME C4 grasses', Functional Plant Biology, vol.29, pp 1337-1348

Seneweera SP, Conroy JP, Ishimaru K, Ghannoum O, Okada M, Lieffering M, Kim H-Y, Kobayashi K, (2002) 'Changes in source-sink relations during development influence photosynthetic acclimation of rice to free-air CO2 enrichment (FACE)', Functional Plant Biology, vol.29, pp 945-953

Ghannoum O, von Caemmerer S, Conroy JP, (2001a) 'Carbon and water economy of Australian NAD-ME and NADP-ME C4 grasses', Functional Plant Biology, vol.28, pp 213-223

Ghannoum O, von Caemmerer S, Conroy JP, (2001b) 'Plant water use efficiency of 17 Australian NAD-ME and NADP-ME C4 grasses at ambient and elevated CO2 partial pressure', Functional Plant Biology, vol.28, pp 1207-1217

Seneweera SP, Ghannoum O, Conroy JP, (2001) 'Root and shoot factors contribute to the effect of drought on photosynthesis and growth of the C4 grass Panicum coloratum at elevated CO2 partial pressure', Functional Plant Biology, vol.28, pp 451-460

von Caemmerer S, Ghannoum O, Conroy JP, Clark H, Newton PCD, (2001) 'Photosynthetic responses of temperate species to free air CO2 enrichment (FACE) in a grazed New Zealand pasture', Functional Plant Biology, vol.28, pp 439-450

Ziska LH, Ghannoum O, Baker JT, Conroy J, Bunce JA, Kobayashi K, Okada M, (2001) 'A global perspective of ground level, "ambient" carbon dioxide for assessing the response of plants to atmospheric CO2', Global Change Biology, vol.7, pp 789-796

Ghannoum O, von Caemmerer S, Ziska LH, and Conroy JP, (2000) 'The growth response of C4 plants to rising atmospheric CO2 partial pressure: a reassessment', Plant, Cell and Environment, vol.23, pp 931-942 (Review)

Aben S. Seneweera S. Ghannoum O, Conroy J, (1999) 'Nitrogen requirement for maximum growth and photosynthesis of rice Oryza sativa L. cv Jarrah grown at 36 and 70 Pa CO2', Functional Plant Biology, vol.26, pp 759-766

Howden SM, McKeon GM, Walker L, Carter JO, Conroy JP, Hall WB, Ash AJ, Ghannoum O, (1999) 'Global change impacts on native pasture in south-east Queensland, Australia', Environmental Modelling & Software, vol.14, pp 307-316

Ghannoum O, Conroy JP, (1998) 'N deficiency precludes a growth response to elevated CO2 in C3 and C4Panicum grasses', Functional Plant Biology, vol.25, pp 627-636

Ghannoum O, Siebke K, von Caemmerer S, Conroy JP, (1998) 'The photosynthesis of young C4Panicum leaves is not C3-like', Plant, Cell and Environment, vol.9, pp 1123-1131

Seneweera SP, Ghannoum O, Conroy JP, (1998) 'High vapour pressure deficit and low soil water availability enhance shoot growth responses of a C4 grass (Panicum coloratum cv. Bambatsi) to CO2 enrichment' Functional Plant Biology, vol.25, pp 287-292

Ghannoum O, von Caemmerer S, Barlow EWR, Conroy JP, (1997) 'The Effect of CO2 enrichment and irradiance on the growth, morphology and gas exchange of a C3 (Panicum laxum) and a C4 (Panicum antidotale) grass' Functional Plant Biology, vol.24, pp 227-237

Conference Proceedings

Ghannoum O, von Caemmerer S, Conroy JP, (2001) Growth and water use efficiency of NAD-ME and NADP-ME C4 grasses exposed to a drying soil, in: Proceedings of the 12th International Congress on Photosynthesis. (Paper No. S17-006), CSIRO Publishing, Melbourne

Siebke S, Ghannoum O, Conroy JP, von Caemmerer S, (2001) Leaf temperature of C4 grasses is increased in elevated CO2 in a glasshouse, in Proceedings of the 12th International Congress on Photosynthesis. (Paper No. S32-012), CSIRO Publishing, Melbourne

Eucalyptus Leaf