Dr Sarah Purdy

Postdoctoral Research Associate - Plant Physiology
School of Life and Environmental Sciences

Member of Sydney Institute of Agriculture

E12 - Plant Breeding Institute Narrabri
The University of Sydney


Biographical details

My research aims to discover metabolic biomarkers that can be used to predict drought responses in chickpea. Metabolic biomarkers are routinely used prognostically in medicine to predict future health risks; a familiar example is the use of cholesterol as a predictor for cardiac events (heart attack or stroke). However, in plant science metabolic biomarkers are rarely used in this way. Australia is the largest exporter of chickpeas with an annual value of $392million to the economy. However, around 50% of potential yields are lost to drought. My research aims to accelerate the selection of high yielding lines under terminal drought conditions by identifying the metabolic signature in healthy plants that results in high yields under drought conditions. I use a combination of enzyme assays and mass spectrometry to identify candidate markers and use statistics and machine learning to model the relationships and produce the predictive algorithms.

Selected publications

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Book Chapters

  • Clifton-Brown, J., Robson, P., Davey, C., Farrar, K., Hayes, C., Huang, L., Jensen, E., Jones, L., Hinton-Jones, M., Maddison, A., et al (2013). Breeding Miscanthus for Bioenergy. Bioenergy Feedstocks: Breeding and Genetics, (pp. 67-81). Ames: John Wiley & Sons. [More Information]

Journals

  • Purdy, S., Maddison, A., Nunn, C., Winters, A., Timms-Taravella, E., Jones, C., Clifton-Brown, J., Donnison, I., Gallagher, J. (2017). Could Miscanthus replace maize as the preferred substrate for anaerobic digestion in the United Kingdom? Future breeding strategies. GCB Bioenergy, 9(6), 1122-1139. [More Information]
  • Maddison, A., Camargo-Rodriguez, A., Scott, I., Jones, C., Elias, D., Hawkins, S., Massey, A., Clifton-Brown, J., McNamara, N., Donnison, I., et al (2017). Predicting future biomass yield in Miscanthus using the carbohydrate metabolic profile as a biomarker. GCB Bioenergy, 9(7), 1264-1278. [More Information]
  • Davey, C., Jones, L., Squance, M., Purdy, S., Maddison, A., Cunniff, J., Donnison, I., Clifton-Brown, J. (2017). Radiation capture and conversion efficiencies of Miscanthus sacchariflorus, M. sinensis and their naturally occurring hybrid M. x giganteus. GCB Bioenergy, 9(2), 385-399. [More Information]
  • Cerasuolo, M., Richter, G., Richard, B., Cunniff, J., Girbau, S., Shield, I., Purdy, S., Karp, A. (2016). Development of a sink-source interaction model for the growth of short-rotation coppice willow and in silico exploration of genotypexenvironment effects. Journal of Experimental Botany, 67(3), 961-977. [More Information]
  • Ireland, G., Petropoulos, G., Carlson, T., Purdy, S. (2015). Addressing the ability of a land biosphere model to predict key biophysical vegetation characterisation parameters with Global Sensitivity Analysis. Environmental Modelling and Software, 65, 94-107. [More Information]
  • Cunniff, J., Purdy, S., Barraclough, T., Castle, M., Maddison, A., Jones, L., Shield, I., Gregory, A., Karp, A. (2015). High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation. Biomass and Bioenergy, 80, 114-127. [More Information]
  • Purdy, S., Maddison, A., Cunniff, J., Donnison, I., Clifton-Brown, J. (2015). Non-structural carbohydrate profiles and ratios between soluble sugars and starch serve as indicators of productivity for a bioenergy grass. AoB Plants, 7(1), 1-12. [More Information]
  • Purdy, S., Cunniff, J., Maddison, A., Jones, L., Barraclough, T., Castle, M., Davey, C., Jones, C., Shield, I., et al (2015). Seasonal Carbohydrate Dynamics and Climatic Regulation of Senescence in the Perennial Grass, Miscanthus. BioEnergy Research, 8(1), 28-41. [More Information]
  • Cerasuolo, M., Richter, G., Cunniff, J., Purdy, S., Shield, I., Karp, A. (2013). A pseudo-3D model to optimise the target traits of light interception in short-rotation coppice willow. Agricultural and Forest Meteorology, 173, 127-138. [More Information]
  • Purdy, S., Maddison, A., Jones, L., Webster, R., Andralojc, J., Donnison, I., Clifton-Brown, J. (2013). Characterization of chilling-shock responses in four genotypes of Miscanthus reveals the superior tolerance of M. x giganteus compared with M. sinensis and M. sacchariflorus. Annals of Botany, 111(5), 999-1013. [More Information]
  • Purdy, S., Bussell, J., Nunn, C., Smith, S. (2013). Leaves of the Arabidopsis maltose exporter1 Mutant Exhibit a Metabolic Profile with Features of Cold Acclimation in the Warm. PloS One, 8(11), 1-12. [More Information]
  • Purdy, S., Bussell, J., Nelson, D., Villadsen, D., Smith, S. (2011). A nuclear-localized protein, KOLD SENSITIV-1, affects the expression of cold-responsive genes during prolonged chilling in Arabidopsis. Journal of Plant Physiology, 168(3), 263-269. [More Information]
  • Wingler, A., Purdy, S., Edwards, S., Chardon, F., Masclaux-Daubresse, C. (2009). QTL analysis for sugar?regulated leaf senescence supports flowering-dependent and -independent senescence pathways. New Phytologist, 185(2), 420-433. [More Information]
  • Diaz, C., Purdy, S., Christ, A., Morot-Gaudry, J., Wingler, A., Masclaux-Daubresse, C. (2005). Characterization of markers to determine the extent and variability of leaf senescence in Arabidopsis. A metabolic profiling approach. Plant Physiology, 138, 898-908. [More Information]

2017

  • Purdy, S., Maddison, A., Nunn, C., Winters, A., Timms-Taravella, E., Jones, C., Clifton-Brown, J., Donnison, I., Gallagher, J. (2017). Could Miscanthus replace maize as the preferred substrate for anaerobic digestion in the United Kingdom? Future breeding strategies. GCB Bioenergy, 9(6), 1122-1139. [More Information]
  • Maddison, A., Camargo-Rodriguez, A., Scott, I., Jones, C., Elias, D., Hawkins, S., Massey, A., Clifton-Brown, J., McNamara, N., Donnison, I., et al (2017). Predicting future biomass yield in Miscanthus using the carbohydrate metabolic profile as a biomarker. GCB Bioenergy, 9(7), 1264-1278. [More Information]
  • Davey, C., Jones, L., Squance, M., Purdy, S., Maddison, A., Cunniff, J., Donnison, I., Clifton-Brown, J. (2017). Radiation capture and conversion efficiencies of Miscanthus sacchariflorus, M. sinensis and their naturally occurring hybrid M. x giganteus. GCB Bioenergy, 9(2), 385-399. [More Information]

2016

  • Cerasuolo, M., Richter, G., Richard, B., Cunniff, J., Girbau, S., Shield, I., Purdy, S., Karp, A. (2016). Development of a sink-source interaction model for the growth of short-rotation coppice willow and in silico exploration of genotypexenvironment effects. Journal of Experimental Botany, 67(3), 961-977. [More Information]

2015

  • Ireland, G., Petropoulos, G., Carlson, T., Purdy, S. (2015). Addressing the ability of a land biosphere model to predict key biophysical vegetation characterisation parameters with Global Sensitivity Analysis. Environmental Modelling and Software, 65, 94-107. [More Information]
  • Cunniff, J., Purdy, S., Barraclough, T., Castle, M., Maddison, A., Jones, L., Shield, I., Gregory, A., Karp, A. (2015). High yielding biomass genotypes of willow (Salix spp.) show differences in below ground biomass allocation. Biomass and Bioenergy, 80, 114-127. [More Information]
  • Purdy, S., Maddison, A., Cunniff, J., Donnison, I., Clifton-Brown, J. (2015). Non-structural carbohydrate profiles and ratios between soluble sugars and starch serve as indicators of productivity for a bioenergy grass. AoB Plants, 7(1), 1-12. [More Information]
  • Purdy, S., Cunniff, J., Maddison, A., Jones, L., Barraclough, T., Castle, M., Davey, C., Jones, C., Shield, I., et al (2015). Seasonal Carbohydrate Dynamics and Climatic Regulation of Senescence in the Perennial Grass, Miscanthus. BioEnergy Research, 8(1), 28-41. [More Information]

2013

  • Cerasuolo, M., Richter, G., Cunniff, J., Purdy, S., Shield, I., Karp, A. (2013). A pseudo-3D model to optimise the target traits of light interception in short-rotation coppice willow. Agricultural and Forest Meteorology, 173, 127-138. [More Information]
  • Clifton-Brown, J., Robson, P., Davey, C., Farrar, K., Hayes, C., Huang, L., Jensen, E., Jones, L., Hinton-Jones, M., Maddison, A., et al (2013). Breeding Miscanthus for Bioenergy. Bioenergy Feedstocks: Breeding and Genetics, (pp. 67-81). Ames: John Wiley & Sons. [More Information]
  • Purdy, S., Maddison, A., Jones, L., Webster, R., Andralojc, J., Donnison, I., Clifton-Brown, J. (2013). Characterization of chilling-shock responses in four genotypes of Miscanthus reveals the superior tolerance of M. x giganteus compared with M. sinensis and M. sacchariflorus. Annals of Botany, 111(5), 999-1013. [More Information]
  • Purdy, S., Bussell, J., Nunn, C., Smith, S. (2013). Leaves of the Arabidopsis maltose exporter1 Mutant Exhibit a Metabolic Profile with Features of Cold Acclimation in the Warm. PloS One, 8(11), 1-12. [More Information]

2011

  • Purdy, S., Bussell, J., Nelson, D., Villadsen, D., Smith, S. (2011). A nuclear-localized protein, KOLD SENSITIV-1, affects the expression of cold-responsive genes during prolonged chilling in Arabidopsis. Journal of Plant Physiology, 168(3), 263-269. [More Information]

2009

  • Wingler, A., Purdy, S., Edwards, S., Chardon, F., Masclaux-Daubresse, C. (2009). QTL analysis for sugar?regulated leaf senescence supports flowering-dependent and -independent senescence pathways. New Phytologist, 185(2), 420-433. [More Information]

2005

  • Diaz, C., Purdy, S., Christ, A., Morot-Gaudry, J., Wingler, A., Masclaux-Daubresse, C. (2005). Characterization of markers to determine the extent and variability of leaf senescence in Arabidopsis. A metabolic profiling approach. Plant Physiology, 138, 898-908. [More Information]

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