Phytodesalination of saline water using Ipomoea aquatica, Alternanthera philoxeroides and Ludwigia adscendens
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A hydroponic experiment has been conducted for desalination of saline water by culturing Ipomoea aquatica, Alternanthera philoxeroides and Ludwigia adscendens at 0–7 dS m−1 salinity level. Water samples were collected at 15-day interval, and the plants were harvested after 45 days. They were separated into root, stem and leaf. EC value decreased in water with increasing time for all halophytes. Root and leaf contain higher amounts of sodium as compared with those of stem. The highest accumulation of sodium was found in the root of A. philoxeroides (145.63 g kg−1); however, I. aquatic has high phytodesalination capacity (130 kg Na+ ha−1) due to high productivity than A. philoxeroides (105 kg Na+ ha−1) and L. adscendens (80 kg Na+ ha−1). Bio-concentration factors (56.10–80.29) and translocation factor values (˃ 1) indicated that these halophytes were good sodium accumulator. Sodium adsorption ration values lied between 16.8–18 at 3 dS m−1 and 20–25.5 at 5 and 7 dS m−1 showed that these halophytes improved the water quality for irrigation. Anatomical variation from microscopic cellular images illustrated that spongy mesophyll cells along with sub-stomatal cells in leaf and xylem vessels along with vacuolar sequestration might be responsible for Na accumulation in the stem of these halophytes.
KeywordsHalophyte Desalination Salinity Sodium Uptake
This research was partially supported by Patuakhali Science and Technology University, Bangladesh (Grant No. PSTU/RTC-B/01/15/03), and International Foundation for Science (IFS), Sweden (Grant No. C/5867-1).
- AMTA (2007) Water desalination processes. Improving America’s waters through membrane treatment and desalting. American Membrane Technology Association 2409 SE Dixie Hwy, Stuart, Florida 34996Google Scholar
- Carillo P, Grazia Annunziata M, Pontecorvo G, Fuggi A, Woodrow P (2011) Salinity stress and salt tolerance. In: Shanker AK, Venkateswarlu B (eds) Abiotic stress in plants—mechanisms and adaptations. InTech, Rijeka, pp 21–38Google Scholar
- Chakraborty SK (2013) Interactions of environmental variables determining the biodiversity of coastal-mangrove ecosystem of West Bengal, India. Development 25:27Google Scholar
- Dajic Z (1996) Studija halofitske zajednice Puccinellietum limosae (Rapcs.) Wend. (Ecological study of halophytic community Puccinellietum limosae (Rapcs.) Wend.) Doctoral dissertation, Faculty of Biology, University of BelgradeGoogle Scholar
- Hoagland DR, Arnon DI (1950) The Water-culture method for growing plants without soil. Circ Calif Agric Exp Stn 347:32 2nd Ed Google Scholar
- Lesch SM, Suarez DL (2009) A short note on calculating the adjusted SAR index. Am Soc Agric Biol Eng 52(2):493–496Google Scholar
- Rabhi M, Ferchichi S, Jouini J, Hamrouni MH, Koyro HW, Ranieri A, Abdelly C, Smaoui A (2010) Phytodesalination of a salt-affected soil with the halophyte Sesuvium portulacastrum L. to arrange in advance the requirements for the successful growth of a glycophytic crop. Bioresour Technol 101:6822–6828CrossRefGoogle Scholar
- Todd DK (1980) Groundwater hydrology, 2nd edn. Willey, New York, pp 267–315Google Scholar