Halophyte agriculture: Success stories

• Published in: Environmental and experimental botany 2014-11, Vol.107, p.71-83
• Main Authors: Panta, Suresh, Flowers, Tim, Lane, Peter, Doyle, Richard, Haros, Gabriel, Shabala, Sergey
• Format: Article
• Language: English
• Subjects: Biological and medical sciences; Desalination; Energy crops; Forage species; Fundamental and applied biological sciences. Psychology; Phytoremediation; Saline agriculture; Saline irrigation; Salinity; Sodium removal
• ISSN: 0098-8472; 1873-7307
• DOI: 10.1016/j.envexpbot.2014.05.006

•Halophytes are viable commercial alternative to traditional crops.•Halophytes can be used for human food consumption.•Halophytes are suitable for forage and animal feeds and as energy, oilseed and protein crops.•Halophytes are efficient to restore saline and contaminated lands.•Halophytes may become an important component of the 21st century farming system. The world's food production will need to increase by up to 70% by 2050 to match the predicted population growth. Achieving this goal will be challenging due to the decreased availability of arable land, resulting from urbanization and land degradation. Soil salinity is a major factor contributing to the latter process. While some improvement in crop yields in saline soils may be achieved as a consequence of single gene transfers, the real progress may be achieved only via a painfully slow “pyramiding” of essential physiological traits. Given the time constraints, a safer solution to meet the 2050 challenge may be to find alternative crop and forage species for farming in salt-affected conditions and to restore salt-affected areas. This review focuses on the suitability of halophytes to become important components of 21st century farming systems. We provide a comprehensive summary of the current use of halophytes for human food consumption, for forage and animal feeds, as oilseed and energy crops, and for desalination and phytoremediation purposes. We argue that the use of halophytes may be a viable commercial alternative to ease pressure on the requirement of good quality land and water for conventional cropping systems and the utilization of land degraded by salinity.