Plant Growth Regulation

, Volume 20, Issue 3, pp 271–277 | Cite as

Variations in abscisic acid, indole-3-acetic acid and zeatin riboside concentrations in two Mediterranean shrubs subjected to water stress

  • M. Lopez-Carbonell
  • L. Alegre
  • A. Pastor
  • E. Prinsen
  • H. van Onckelen


Water stress induced an increase in endogenous concentrations of ABA in Lavandula stoechas L. plants to 13100 pmol ABA g−1 FW, which may contribute to the maintenance of water relations between the second and the third day of water stress treatment. After the third day, a sharp decrease in ABA levels was observed to 2630 pmol ABA g−1 FW, together with a decrease in water content and water potential and a loss of plant response to water stress. Water deficit did not induce an increase in endogenous ABA concentration, which remained at 514 pmol ABA g−1 FW in Rosmarinus officinalis L., which is more sclerophyllous than L. stoechas. Nevertheless, the relative water content of Rosmarinus officinalis L. after seven days of water stress decreased more than 40% and ψ reached values of −3.2 MPa. R. officinalis showed lower levels of ABA, but significantly higher levels of IAA and ZR than L. stoechas (4 times and 6 times respectively in well watered-plants). The increase in ABA levels is not a common mechanism in these two Mediterranean shrubs which survive under water stress conditions.

Key words

Lavandula stoechas Rosmarinus officinalis ABA IAA ZR water stress 



abscisic acid


days of water stress treatment


dry weight


fresh weight


indole-3-acetic acid


Reversed Phase


relative water content


turgid weight


water content


zeatin riboside


water potential


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Copyright information

© Kluwer Academic Publishers 1996

Authors and Affiliations

  • M. Lopez-Carbonell
    • 1
  • L. Alegre
    • 1
  • A. Pastor
    • 1
  • E. Prinsen
    • 2
  • H. van Onckelen
    • 2
  1. 1.Department of Plant Biology, Plant Physiology Unit, Faculty of BiologyBarcelona UniversitySpain
  2. 2.Department of BiologyUniversity of Antwerp (UIA)WilrijkBelgium

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