Find our publications on Mendeley and ResearchGate.

Our Collaborative Team Publications

Scott, E.R., X. Li., J.P. Wei, N. Kfoury, J. Morimoto, M.M. Guo, A. Robbat, A.Ahmed, S.B. Cash, T.S. Griffin, J.R. Stepp, W. Han, and C.M. and Orians. 2020. Changes in tea plant secondary metabolite profiles as a function of leafhopper density and damage. Front. Plant Sci. doi: 10.3389/fpls.2020.00636.

Boehm, R., H. Kitchel, H., S. Ahmed, A. Hall, M. Orians, J.R. Stepp, A. Robbat, Jr., T.S. Griffin, and S.B. Cash. 2019. Is agricultural emissions mitigation on the menu for tea drinkers? Sustainability 11:4883.

Kfoury N, Scott ER, Orians CM, Ahmed S, Cash SB, Griffin T, Matyas C, Stepp JR, Han W-Y, Xue D, Long C, Robbat A. 2019. Plant-Climate Interaction Effects: Changes in the Relative Distribution and Concentration of the Volatile Tea Leaf Metabolome in 2014–2016. Front Plant Sci 10:1518. doi: 10.3389/fpls.2019.01518

Huang, H.; Kfoury, N; Orians, C.M.; Griffin, T.; Ahmed, S.; Cash, S.B.; Stepp, J.R.; Xue, D.; Long, C.; Robbat, A. 2019. 2014–2016 seasonal rainfall effects on metals in tea (Camelia sinensis (L.) Kuntze). Chemosphere 219, 796–803.

Scott, E.R.; Xin, L.; Kfoury, N.; Morimoto, J.; Han, W.; Ahmed, S.; Cash, S.B.; Griffin, T.S.; Stepp, J.R.; Robbat, A.; Orians, C.M. 2019. Interactive effects of drought severity and simulated herbivory on tea (Camellia sinensis) volatile and non-volatile metabolites. Environ. Exp. Bot. 157, 283–292.

Kfoury, N.; Morimoto, J.; Kern, A.; Scott, E. R.; Orians, C. M.; Ahmed, S.; Griffin, T.; Cash, S.B.; Stepp, J.R.; Xue, D.; Long, C.; Robbat, A. 2018. Striking changes in tea metabolites due to elevational effects. Food Chemistry. doi:10.1016/j.foodchem.2018.05.040

Boehm, R.; Cash, S.B.; Anderson, B.A.; Ahmed, S.; Griffin, T.S.; Robbat, A. Jr.; Stepp, J.R.; Han, W.; Hazel, M.; Orians, C.M. 2016. Association between Empirically Estimated Monsoon Dynamics and Other Weather Factors and Historical Tea Yields in China: Results from a Yield Response ModelClimate. 4 (2),  20

Kowalsick, A; Kfoury, N; Robbat, A; Ahmed, S; Orians, C; Griffin, T; Cash, S; Stepp, R. 2014. Metabolite Profiling of Camellia sinensis by Automated Sequential, Multidimensional Gas Chromatography/Mass Spectrometry (GC-GC/MS) Reveals Strong Monsoon Effects on Tea Constituents. Journal of Chromatography A 1370 (28):  230–239

Ahmed, S; Stepp, JR; Orians, C.; Griffin, T; Matyas, C.; Robbat, A.; Cash, S.; Xue, D; Chunlin, L; Kennelly, E; Unachuckwu, U.; Buckley, S. 2014. Effects of Extreme Climate Events on Tea (Camellia sinensis) Functional Quality Validate Indigenous Farmer Knowledge and Sensory Preferences in Tropical China. PLoS One 9(10): e109126

Ahmed, S.; Orians, C.; Griffin, T.; Buckley, S.; Unachukwu, U.; Stratton, A.E.; Stepp, J.R.; Robbat, A.; Cash, S; Kennelly, E. 2014. Effects of Water Availability and Pest Pressures on Tea (Camellia sinensis) Growth and Functional Quality. AoB Plants 6

Our Other Publications on Tea 

Peer-Reviewed Research Articles

Ahmed S, Griffin TS, Kraner D, Shaffner MK, Sharma D, Hazel M, Leitch AR, Orians CM, Han W-H, Stepp JR, Robbat A, Matyas C, Long C, Xue D, Houser RF, Cash SB. 2019. Environmental Factors Variably Impact Tea Secondary Metabolites in the Context of Climate Change. Front Plant Sci 10:939. doi: 10.3389/fpls.2019.00939

Kfoury N, Baydakov E, Gankin Y, Robbat A. 2018. Differentiation of key biomarkers in tea infusions using a target/nontarget gas chromatography/mass spectrometry workflow. Food Res Int 113:414–423. doi: 10.1016/j.foodres.2018.07.028

Li X, Wei J-P, Scott ER, Liu J-W, Guo S, Li Y, Zhang L, Han W-H. 2018. Exogenous Melatonin Alleviates Cold Stress by Promoting Antioxidant Defense and Redox Homeostasis in Camellia sinensis L. Molecules 23:165. doi: 10.3390/molecules23010165

Xin, T.; Huang, W.; de Riek,J.; Zhang, S.; Ahmed, S.; Long, C. 2017. Cultural Factors Enhance the Genetic Diversity of Camellia Reticulata More than Geography. Ecology and Evolution 1-12 (DOI:

Kfoury, N., Scott, E., Orians, O., Robbat, A. 2017. Direct Contact Sorptive Extraction: A robust method for sampling plant volatiles in the field. Journal of Agricultural and Food Chemistry.

Ahmed, S.; Stepp, J.R. 2016. Beyond Yields: Climate Effects on Specialty Crop Quality and Agroecological Management. Elementa: Science of the Anthropocene (Forum on New Pathways to Sustainability in Agroecological Systems). 4: 000092

Ahmed, S; Peters, CM; Chunlin, L; Meyer, R; Unachukwu, U; Litt, A; Kennelly, E; Stepp, JR. 2013. Biodiversity and Phytochemical Quality in Indigenous and State-Supported Tea Management Systems of Yunnan, China. Conservation Letters. 5 (6): 28-36

Stoeckle, M; Gamble, C; Kirpekar, R; Young, G; Ahmed, S; Little, D. 2011. Commercial Teas Highlight Plant DNA Barcode Identification Successes and Obstacles. Scientific Reports (Nature Publishing Group). 1 (42)

Ahmed, S; Stepp, JR; Toleno, R; Peters, CM. 2010. Increased Market Integration, Value, and Ecological Knowledge of Tea Agro-forests in the Akha Highlands of Southwest China. Ecology and Society. 15 (4): 27

Ahmed, S; Unachukwu, U; Stepp, JR; Peters, CM.; Chunlin, L; Kennelly, E. 2010. Pu-erh Tea Tasting in Yunnan, China: Correlation of Drinkers’ Perceptions to Phytochemistry. Journal of Ethnopharmacology. 132: 176-185

Unachukwu, U; Ahmed, S; Kavalier, A; Lyles, J; Kennelly, E. 2010.Variation of Phenolic and Methylxanthine Composition and Anti-oxidant Activity among White and Green Teas (Camellia sinensis var. sinensis (L.) Kuntze Theaceae). Journal of Food Science. 75 (6): C541–C548

Books, Book Chapters, Magazine Articles and Other Publications

Scott, E.R. & Orians, C. M. 2018. Differential Changes in Tea Quality as Influenced by Insect Herbivory. in Stress Physiology of Tea in the Face of Climate Change (In Press) (eds. Han, W.-Y., Li, X. & Ahammed, G. J.) (Springer Nature, 2018). doi:10.1007/978-981-13-2140-5

Ahmed S. 2018. Toward the Implementation of Climate-Resilient Tea Systems: Agroecological, Physiological, and Molecular Innovations. In: Han WY., Li X., Ahammed G. (eds) Stress Physiology of Tea in the Face of Climate Change. Springer, Singapore

Ahmed, S.; Griffin, T.; Cash, S.B.; Han, W.; Matyas, C.; Long, C.; Orians, C.M.; Stepp, J.R.; Robbat, A.; Xue, D. Global Climate Change, Ecological Stress, and Tea Production. in Stress Physiology of Tea in the Face of Climate Change 1–23 (Springer Singapore, 2018). doi:10.1007/978-981-13-2140-5_1

Freeman, M.; Ahmed, S.; Lin, S. 2015. Life of Tea: Terroir and Connoisseurship. Barclays Bank PLC, London, UK (Large format book; Non-trade Edition; Commissioned by Barclays Bank PLC)

Ahmed, S; Stepp, JR; Xue, D. 2015. Cultivating Botanicals for Sensory Quality: From Good Agricultural Practices (GAPs) to Taste Discernment by Smallholder Tea Farmers. In: Reynertson, Kurt. Ed. Botanicals: Methods for Quality and Authenticity. CRC Press, Taylor & Francis Group, LLC

Ahmed, S. 2014. Tea and the Taste of Climate Change: Understanding Impacts of Environmental Variation on Botanical  Quality. Herbal Gram Magazine. Fall 2014. Issue 103: 44-51

Ahmed, Selena. 2013. The Terroir of Pu-erh Tea and Human Wellbeing. In: Cousineau and Hoyt, Editors. Twenty-one Tea Essays for the 21st century. Talking Leaves Press, Watsonville, CA

Ahmed S, Stepp JR. 2013. Pu-erh Tea: Botany, Production, and Chemistry. In: Tea in Health and Disease Prevention. Elsevier, pp 59–71

Ahmed, S; Stepp, JR. 2012. Pu-erh Tea: Botany, Production, and Chemistry. In: Preedy, Victor. Ed. Tea in Health and Disease Prevention. Academic Press, Elsevier Science and Technology, Missouri

Ahmed, S; Stepp, JR. 2012. Green Tea: The Plants, Processing, Manufacturing and Production. In: Preedy, Victor. Ed. Tea in Health and Disease Prevention. Academic Press, Elsevier Science and Technology, Missouri

Ahmed, S. 2012. Review of the Clinical Evidence on Weight Loss and Tea Consumption. In: Preedy, Victor. Ed. Tea in Health and Disease Prevention. Academic Press, Elsevier Science and Technology, Missouri

Ahmed, Selena; Freeman, Michael. 2011. Pu-erh Tea and the Southwest Silk Road: An Ancient Quest for Wellbeing. Herbal Gram; Summer 2011: 90 (Cover Story)

Freeman, M; Ahmed, S. 2011. Tea Horse Road: China’s Ancient Trade Road to Tibet. River Books Ltd. Bangkok, Thailand. (Large format book; 340 pages; 1.6 x 11.9 x 11.8 inches; 6.3 pounds)

Ahmed, Selena. 2008. A Cup of Diversity: Learning from the Farmers of Forest Tea-Gardens. Resurgence. 250, Indigenous Intelligence Issue for the 2008 World Conservation Congress

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