Seasonal variations in phytodesalination capacity of two perennial halophytes in their natural biotope
Journal of Biological Research. 14:181-189.
Access to files
Full-text and supplementary files are not available from Manchester eScholar. Full-text is available externally using the following links:
Full-text held externally
In Soliman sabkha (NE Tunisia), Tecticornia indica and Suaeda fruticosa tufts were divided into three size classes (small, medium, and big) in which the shoot sodium and potassium contents were determined in July 2007 and February 2008. Shoot dry weights per tuft and per hectare were estimated. Soil samples (20 upper centimeters) were taken from inside and outside the halophyte tufts and analyzed for electrical conductivity (EC1/10) and soluble sodium content. We found that these two parameters were significantly lower in the soil from inside the tufts than in the surrounding soil. This effect was more pronounced in winter (February 2008) when EC1/10 inside halophyte tufts was 63 to 72% lower than outside. In July 2007, the relevant reduction of EC1/10 inside the tufts was 55%. Soluble sodium content was reduced by 70.5% in winter and only 31 to 37% in summer. The ecosystem productivity was about 8.6 tonnes dry weight per hectare (t DW ha-1) with higher sodium than potassium contents (about 0.646 t Na+ ha-1 in summer and 0.752 tonnes Na+ ha-1 in winter). Regardless of the season, T. indica exhibited much higher phytodesalination capacity (77.7-94.4% of the whole shoot-removed sodium). For S. fruticosa, the decrease in soil salinity was due to roots that released sodium ions from the exchange sites and facilitated their leaching to the deeper horizons. From an ecological point of view, phytodesalination and sodium leaching enhancement are interesting processes since they provide glycophytes with a microhabitat suitable for their development, which maintains the biodiversity within the saline ecosystem.
- Related website http://www.scopus.com/inward/record.url?eid=2-s2.0-78149238048&partnerID=40&md5=fd94bbb2141672175a89762e2c6e2c32
- 1790045X (ISSN) Export Date: 27 March 2012 Source: Scopus Language of Original Document: English Correspondence Address: Rabhi, M.; Laboratoire des Plantes ExtrÃªmophiles, Centre de Biotechnologie de Borj-CÃ©dria, B. P. 901, Hammam-Lif 2050, Tunisia; email: firstname.lastname@example.org References: Abdelly, C., LachÃ¢al, M., Grignon, C., Soltani, A., Hajji, M., Association Ã©pisodique d'halophytes strictes et de glycophytes dans un Ã©cosystÃ¨me hydromorphe sale en zone semi-aride (1995) Agronomie, 15, pp. 557-568; Ahmad, N., Qureshi, R.H., Qadir, M., Amelioration of a calcareous saline-sodic soil by gypsum and forage plants (1990) Land Degradation and Rehabilitation, 2, pp. 277-284; Barazani, O., Golan-Goldhirsh, A., Salt-driven interactions between Pistacia lentiscus and Salsola inermis (2009) Environmental Science and Pollution Research, 16, pp. 855-861; Benwahhoud, M., Jouad, H., Eddouks, M., Lyoussi, B., Hypoglycemic effect of Suaeda fruticosa in streptozotocin- induced diabetic rats (2001) Journal of Ethnopharmacology, 76, pp. 35-38; Bhatt, J.G., Indirakutty, K.N., Salt uptake and salt tolerance by sunflower (1973) Plant and Soil, 39, pp. 457-460; Helalia, A.M., El-Amir, S., Abou-Zeid, S.T., Zaghloul, K.F., Bio-reclamation of saline-sodic soil by amshot grass in northern Egypt (1992) Soil and Tillage Research, 22, pp. 109-115; Kursakova, V.S., The effect of perennial herbs on the physical properties of saline soils (2006) Eurasian Soil Science, 39, pp. 748-752; Kumar, A., Abrol, I.P., Studies on the reclaiming effect of Karnal-grass and para-grass grown in a highly sodic soil (1984) The Indian Journal of Agricultural Sciences, 54, pp. 189-193; le HouÃ©rou, H.N., Ionesco, T., (1973) AppÃ©tibilitÃ© Des EspÃ¨ces VÃ©gÃ©tales De La Tunisie Steppique, , AG-TUN 71/ 525, FAO, Rome; Lipiec, J., Hatano, R., Quantification of compaction effects on soil physical properties and crop growth (2003) Geoderma, 116, pp. 107-136; Munns, R., Tester, M., Mechanisms of salt tolerance (2008) Annual Review of Plant Biology, 59, pp. 651-681; Pottier-Alapetite, G., (1979) Flore De La Tunisie. Angiospermes- DicotylÃ©dones (ApÃ©tales-DialypÃ©tales, PremiÃ¨re Partie), , Imprimerie Officielle de la RÃ©publique Tunisienne, Tunis; Qadir, M., Oster, J.D., Crop and irrigation management strategies for saline sodic soils and waters aimed at environmentally sustainable agriculture (2004) Science of the Total Environment, 323, pp. 1-19; Qadir, M., Qureshi, R.H., Ahmad, N., Reclamation of a saline-sodic soil by gypsum and Leptochloa fusca (1996) Geoderma, 74, pp. 207-217; Qadir, M., Ghafoor, A., Murtaza, G., Amelioration strategies for saline soils: A review (2000) Land Degradation and Development, 11, pp. 501-521; Qadir, M., Qureshi, R.H., Ahmad, N., Amelioration of calcareous saline-sodic soils through phytoremediation and chemical strategies (2002) Soil Use and Management, 18, pp. 381-385; Qadir, M., Steffens, D., Yan, F., Schubert, S., Proton release by N2-fixing plant roots: A possible contribution to phytoremediation of calcareous sodic soils (2003) Journal of Plant Nutrition and Soil Science, 166, pp. 14-22; Rabhi, M., Hafsi, C., Lakhdar, A., Hajji, S., Barhoumi, Z., Hamrouni, M.H., Abdelly, C., Smaoui, A., Evaluation of the capacity of three halophytes to desalinize their rhizosphere as grown on saline soils under non-leaching conditions (2009) African Journal of Ecology, 47, pp. 463-468; Ravindran, K.C., Venkatesan, K., Balakrishnan, V., Chellappan, K.P., Balasubramanian, T., Restoration of saline land by halophytes for Indian soils (2007) Soil Biology and Biochemistry, 39, pp. 2661-2664; Shahid, S.A., New Technologies for Soil Reclamation and Desert Greenery (2002) Proceedings of the Joint KISR - PEC Symposium, pp. 308-329. , In: Al-Awadhi MN, Faisal KT, eds; Shiyab, S., Shibli, R., Mohammad, M., Influence of sodium chloride salt stress on growth and nutrient acquisition of sour orange in vitro (2003) Journal of Plant Nutrition, 26, pp. 985-996; Tester, M., Davenport, R., Na+ tolerance and Na+ transport in higher plants (2003) Annals of Botany, 91, pp. 503-527; Vysotskaya, L.B., Korobova, A.V., Kudoyarova, G.R., Abscisic acid accumulation in the roots of nutrientlimited plants: Its impact on the differential growth of roots and shoots (2008) Journal of Plant Physiology, 165, pp. 1274-1279; Weber, D.J., Ansari, R., Gul, B., Khan, M.A., Potential of halophytes as source of edible oil (2007) Journal of Arid Environments, 68, pp. 315-321; Zahran, M.A., Abdel Wahid, A.A., Halophytes and human welfare. Part III (1982) Contributions to the Ecology of Halophytes. Tasks for Vegetation Science, Volume, 2, pp. 235-257. , In: Sen DN, Rajpurohit KS, eds., Junk W Publishers, The Hague; Zhao, K.F., Desalinization of saline soils by Suaeda salsa (1991) Plant and Soil, 135, pp. 303-305; Zhao, K.F., Zhang, W.J., Fan, H., Song, J., Jiang, X.Y., Biological measures in amelioration and utilisation of saline soils (2001) Soil Bulletin, 32, pp. 115-119; Zhao, K.F., Fan, H., Song, J., Sun, M.X., Wang, B.Z., Zhang, S.Q., Ungar, I.A., Two Na+ and Cl- hyperaccumulators of the Chenopodiaceae. Journal of Integrative (2005) Plant Biology, 47, pp. 311-318