Laboratory of Plant Adaptation to Abiotic Stresses (LAPSA), Biotechnology Centre of Borj Cedria, P.O. Box 901, 2050 Hammam-Lif, Tunisia.
Bioresour Technol. 2010 Sep;101(17):6822-8. doi: 10.1016/j.biortech.2010.03.097. Epub 2010 Apr 18.
In the present work, we studied the potential of the obligate halophyte, Sesuvium portulacastrum L., to desalinize an experimentally-salinized soil after the following criteria: (i) decrease in soil salinity and sodicity, (ii) plant biomass capacity to accumulate sodium ions, and (iii) phytodesalinized soil quality (equivalent to growth of a glycophytic test culture of Hordeum vulgare L.). The cultivation of the halophyte on the salinized soil (phytodesalination culture) led to a marked absorption of Na(+) ions by S. portulacastrum roots and their accumulation in the above-ground biomass up to 872 mg plant(-1) and 4.36 g pot(-1) (about 1 tha(-1)). The decrease in salinity and sodicity of the phytodesalinized soil significantly reduced the negative effects on growth of the test culture of H. vulgare. Furthermore, the phytodesalination enabled H. vulgare plants to keep a high water content and to develop a higher biomass with relatively high K and low Na contents.
在本工作中，我们研究了专性盐生植物海蓬子（Sesuvium portulacastrum L.）的潜力，使其能够在以下标准后脱盐经实验盐化的土壤：（i）降低土壤盐度和碱度，（ii）植物生物量积累钠离子的能力，以及（iii）脱盐后土壤质量（相当于大麦属（Hordeum vulgare L.）的一种嗜盐测试培养物的生长）。在盐化土壤上种植盐生植物（植物脱盐培养）导致 S. portulacastrum 根对 Na(+)离子的显著吸收，并将其积累到地上生物量中，达到 872mg 植物(-1)和 4.36g 盆(-1)（约 1tha(-1)）。脱盐后土壤的盐度和碱度的降低显著降低了对大麦属（H. vulgare）测试培养物生长的负面影响。此外，植物脱盐使大麦属植物保持高含水量，并以相对较高的 K 和低 Na 含量来发展更高的生物量。
