Advertisement

Diversity in the response of two potential halophytes (Batis maritima and Crithmum maritimum) to salt stress

  • Karim Ben Hamed
  • Dorsaf Messedi
  • Annamaria Ranieri
  • Chedly Abdelly

Abstract

In this study, we compared the response to NaCl of Batis maritima and Crithmum maritimum, two potential halophytes with a different range of salinity tolerance. At high NaCl concentrations (800 mM for B. maritima and 300 mM for C. maritimum), the growth of both plants was significantly reduced. A split root experiment aimed at determining whether high NaCl conditions limit growth of plants through toxic effects of excessive salt accumulation in shoots or through impairment of some essential nutrient acquisition. The split root experiment was performed with three treatments. In the first treatment (B/S), half of the roots were immersed in a basal medium (B) and the other half in the same medium supplemented with NaCl (S). In the two other treatments, the two halves of the root system were immersed either in salt-free medium (B/B) or in the basal medium containing salt (S/S). Under split-root conditions, B. maritima and C. maritimum accumulated Na in their shoots, and displayed improved growth as compared to control plants. In C. maritimum, the B/S treatment partially restored K provision to the shoots but not that of Ca, suggesting that the inhibition of K+ uptake by salt could only limit its growth under high salinity. In B. maritima (B/S plants), the concentration of K+ and Ca2+ were diluted by growth. The inhibition of K+ and Ca2+ uptake by salt did not seem to limit growth of B. maritima growth under high salinity. The growth of B. maritima and C. maritimum could be also limited by the restriction imposed by NaCl on N uptake.

Keywords

Salt Stress Salt Tolerance Relative Growth Rate Salinity Tolerance Salt Treatment 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    Kerstiens G, Tych W, Robinson MF, Mansfield TA (2002) Sodium-related partial stomatal closure and salt tolerance of Aster tripolium. New Phytol 153: 509–515CrossRefGoogle Scholar
  2. 2.
    Parks GE, Dietrich MA, Schumaker KS (2002) Increased vacuolar Na+/H+ exchange activity in Salicornia bigelovii Torr. in response to NaCl. J Exp Bot 53: 1055–1065PubMedCrossRefGoogle Scholar
  3. 3.
    Balasuramanian R (2004) Investigation of salt tolerance mechanisms in the halophytes Aster tripolium L. and Sesuvium portulacastrum L. through physiological, biochemical, and molecular methods. Ph D thesis, Institut für Botanik, Universität HannoverGoogle Scholar
  4. 4.
    Greenway H, Munns R (1980) Mechanisms of salt tolerance in nonhalophytes. Annu Rev Plant Physiol 31: 149–190CrossRefGoogle Scholar
  5. 5.
    Koyro HW (2003) Study of potential cash crop halophytes by a quick check system. In: Lieth H, Mochtchenko M (eds): Cash crop halophytes: Recent studies. Kluwer, Dordrecht, 5–17Google Scholar
  6. 6.
    Maas EV (1987) Salt tolerance of plants. In: Christie BR (ed): CRC handbook of plant sciences in agriculture, vol II. CRC Press, Boca Raton, 57–75Google Scholar
  7. 7.
    Gorham J (1996) Mechanisms of salt tolerance of halophytes. In: Choukrallah R, Malcolm CV, Hamdy A (eds): Halophytes and biosaline agriculture. Marcel Dekker, New York, 31–53Google Scholar
  8. 8.
    Short DC, Colmer TD (1999) Salt tolerance in the halophyte Halosarcia pergranulata subsp. Pergranulata. Ann Bot 83: 207–213CrossRefGoogle Scholar
  9. 9.
    Debez A, BenHamed K, Chibani F, Abdelly C (2003) Some physiological and biochemical aspects of salt tolerance in two oleaginous halophytes: Cakile maritima and Crithmum maritimum. In: Lieth H, Mochtchenko M (eds): Cash crop halophytes: Recent studies. Kluwer, Dordrecht, 31–39Google Scholar
  10. 10.
    Marschner H (1995) Mineral nutrition of higher plants, 2nd edn. Academic Press, LondonGoogle Scholar
  11. 11.
    Munns R (2002) Comparative physiology of salt and water stress. Plant Cell Environ 25: 239–250PubMedCrossRefGoogle Scholar
  12. 12.
    Grattan SR, Grieve CM (1999) Salinity-mineral nutrient relation in horticultural crop. Sci Hort 78: 127–157CrossRefGoogle Scholar
  13. 13.
    Rengel Z (1992) The role of calcium in salt toxicity. Plant Cell Environ 15: 625–632CrossRefGoogle Scholar
  14. 14.
    Tester M, Davenport R (2003) Na+ tolerance and Na+ transport in higher plants. Ann Bot 91: 503–527PubMedCrossRefGoogle Scholar
  15. 15.
    Messedi D, Labidi N, Grignon C, Abdelly C (2004) Limits imposed by salt to the growth of the halophyte Sesuvium portulacastrum. J Plant Nutr Soil Sci 167: 720–725CrossRefGoogle Scholar

Copyright information

© Birkhäuser Verlag/Switzerland 2008

Authors and Affiliations

  • Karim Ben Hamed
    • 1
  • Dorsaf Messedi
    • 1
  • Annamaria Ranieri
    • 2
  • Chedly Abdelly
    • 1
  1. 1.Laboratory of Plant Adaptation to Abiotic StressesCenter for Biotechnology in Borj Cedria EcoparkHammam LifTunisia
  2. 2.Department of Agricultural Chemistry and BiotechnologyUniversity of PisaPisaItaly

Personalised recommendations