Journal article

Energy costs of salt tolerance in crop plants

Rana Munns, David A Day, Wieland Fricke, Michelle Watt, Borjana Arsova, Bronwyn J Barkla, Jayakumar Bose, Caitlin S Byrt, Zhong-Hua Chen, Kylie J Foster, Matthew Gilliham, Sam W Henderson, Colin LD Jenkins, Herbert J Kronzucker, Stanley J Miklavcic, Darren Plett, Stuart J Roy, Sergey Shabala, Megan C Shelden, Kathleen L Soole Show all

New Phytologist | Wiley | Published : 2020


Agriculture is expanding into regions that are affected by salinity. This review considers the energetic costs of salinity tolerance in crop plants and provides a framework for a quantitative assessment of costs. Different sources of energy, and modifications of root system architecture that would maximize water vs ion uptake are addressed. Energy requirements for transport of salt (NaCl) to leaf vacuoles for osmotic adjustment could be small if there are no substantial leaks back across plasma membrane and tonoplast in root and leaf. The coupling ratio of the H+‐ATPase also is a critical component. One proposed leak, that of Na+ influx across the plasma membrane through certain aquaporin ch..

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Awarded by Australian Research Council Centre of Excellence in Plant Energy Biology

Funding Acknowledgements

This review was instigated from the 22nd New Phytologist Workshop 'Energy costs of salinity tolerance in crop plants' Adelaide, Australia, 10-12 April 2018 and we thank all participants for their contributions and discussion. RM, SDT, MG, CSB, JB, NLT, MS and SW acknowledge the financial assistance from The Australian Research Council Centre of Excellence in Plant Energy Biology (CE140100008).