Display options
Cite
Vysotskaya L, Hedley PE, Sharipova G, et al. Effect of salinity on water relations of wild barley plants differing in salt tolerance. AoB Plants. 2010;2010:plq006doi: 10.1093/aobpla/plq006.
Vysotskaya, L., Hedley, P. E., Sharipova, G., Veselov, D., Kudoyarova, G., Morris, J., & Jones, H. G. (2010). Effect of salinity on water relations of wild barley plants differing in salt tolerance. AoB PLANTS, 2010plq006. https://doi.org/10.1093/aobpla/plq006
Vysotskaya, Lidia, et al. "Effect of salinity on water relations of wild barley plants differing in salt tolerance." AoB PLANTS vol. 2010 (2010): plq006. doi: https://doi.org/10.1093/aobpla/plq006
Vysotskaya L, Hedley PE, Sharipova G, Veselov D, Kudoyarova G, Morris J, Jones HG. Effect of salinity on water relations of wild barley plants differing in salt tolerance. AoB Plants. 2010;2010:plq006. doi: 10.1093/aobpla/plq006. Epub 2010 May 16. PMID: 22476064; PMCID: PMC3000697.
Copy Download .nbib Format: NLM
Share it on

AoB Plants. 2010;2010:plq006. doi: 10.1093/aobpla/plq006. Epub 2010 May 16.

Effect of salinity on water relations of wild barley plants differing in salt tolerance.

AoB PLANTS

Lidia Vysotskaya, Peter E Hedley, Guzel Sharipova, Dmitry Veselov, Guzel Kudoyarova, Jennifer Morris, Hamlyn G Jones

Affiliations

  1. Institute of Biology, Ufa Scientific Center , Russian Academy of Sciences , pr. Oktyabrya 69, Ufa 450054 , Russia.

PMID: 22476064 PMCID: PMC3000697 DOI: 10.1093/aobpla/plq006

Abstract

BACKGROUND AND AIMS: Certain lines of wild barley (Hordeum spontaneum) are more tolerant of salinity than others. The physiological basis of this difference is examined in a comparative study of a saline-tolerant and saline-intolerant line that emphasizes plant water relations.

METHODOLOGY: Effects of salt-treatment (75 mM maximum) extending from a few hours to 3 weeks were quantified in 8-day-old seedlings of a saline-sensitive wild barley line ('T-1') and a less saline-sensitive line ('20-45'). Plants were grown in nutrient culture. Levels of mRNA of the HtPIP2;4 aquaporin (AQP) gene were determined together with a range of physiological responses including root hydraulic conductivity, osmotic potential of root xylem sap, transpiration, leaf relative water content, root water content, leaf water potential, leaf sap osmolality, leaf length, leaf area and chlorophyll content.

PRINCIPAL RESULTS: Salt treatment inhibited transpiration and hydraulic conductivity more in salt-tolerant '20-45' plants than in salt-sensitive 'T-1'. In '20-45', the effect was paralleled by a fast (within a few hours) and persistent (3 days) down-regulation of aquaporin. In salt-sensitive 'T-1' plants, aquaporin down-regulation was delayed for up to 24 h. Greater tolerance in '20-45' plants was characterized by less inhibition of leaf area, root fresh weight, leaf water content and chlorophyll concentration. Leaf water potentials were similar in both lines.

CONCLUSIONS: (i) Decline in hydraulic conductivity in salt-treated barley plants is important for stomatal closure, (ii) lowered transpiration rate is beneficial for salt tolerance, at least at the seedling stage and (iii) changes in AQP expression are implicated in the control of whole plant hydraulic conductivity and the regulation of shoot water relations.

References

  1. Plant Cell. 1996 Jul;8(7):1181-91 - PubMed
  2. Plant Cell. 2003 Feb;15(2):509-22 - PubMed
  3. Plant Physiol. 2002 Jan;128(1):282-90 - PubMed
  4. Ann Bot. 2006 Dec;98(6):1301-10 - PubMed
  5. J Exp Bot. 2006;57(5):1025-43 - PubMed
  6. J Exp Bot. 2004 May;55(399):1115-23 - PubMed
  7. Plant Physiol Biochem. 2004 Mar;42(3):251-5 - PubMed
  8. Phytochemistry. 2009 Mar;70(4):492-500 - PubMed
  9. Plant Cell Environ. 2006 Aug;29(8):1644-50 - PubMed
  10. New Phytol. 2005 Sep;167(3):645-63 - PubMed
  11. Plant Cell Physiol. 2003 Dec;44(12):1378-83 - PubMed
  12. Plant Physiol. 2009 Jun;150(2):1093-104 - PubMed
  13. Plant Physiol. 2000 Apr;122(4):1025-34 - PubMed
  14. J Exp Bot. 2005 Nov;56(421):2971-81 - PubMed
  15. J Plant Physiol. 2005 Jan;162(1):21-6 - PubMed
  16. Plant Cell Environ. 2002 Feb;25(2):265-274 - PubMed
  17. Biochim Biophys Acta. 1965 Nov 29;109(2):448-53 - PubMed
  18. J Exp Bot. 2000 Sep;51(350):1531-42 - PubMed
  19. Proc Natl Acad Sci U S A. 2001 Nov 20;98(24):14138-43 - PubMed
  20. Planta. 1989 Mar;177(3):281-95 - PubMed
  21. Plant Mol Biol. 2002 Mar-Apr;48(5-6):511-27 - PubMed
  22. J Exp Bot. 2006;57(5):1079-95 - PubMed
  23. Physiol Plant. 2008 Apr;132(4):479-90 - PubMed
  24. J Exp Bot. 2004 Feb;55(396):307-19 - PubMed

Publication Types