Russian Journal of Plant Physiology

, Volume 54, Issue 5, pp 612–618 | Cite as

Inducible and constitutive mechanisms of salt stress resistance in Geum urbanum L.

  • N. L. Radyukina
  • Yu. V. Ivanov
  • A. V. Kartashov
  • N. I. Shevyakova
  • V. Yu. Rakitin
  • V. N. Khryanin
  • Vl. V. Kuznetsov
Research Papers


The avens (Geum urbanum L.) seedlings were grown for 6 weeks until the expansion of five to six leaves and then exposed to salinity shock (300 mM NaCl in the nutrient medium) or to a gradual (within 4 days) increase in NaCl concentration from 100 to 400 mM. The dynamics of stress-dependent accumulation of Na+, Cl, proline, and polyamines in leaves and roots was measured, together with activities of antioxidant enzymes, namely, superoxide dismutase (SOD) and guaiacol-dependent peroxidase occurring in soluble, ionically bound, and covalently bound forms. It is shown that avens plants can adapt to gradual salinization by mobilizing stressinducible protective mechanisms (accumulation of proline and spermine) and by activating constitutive enzyme systems (SOD and peroxidase).

Key words

Geum urbanum salinization proline polyamines superoxide dismutase guaiacol peroxidases 



reactive oxygen species


superoxide dismutase


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Copyright information

© Pleiades Publishing, Ltd. 2007

Authors and Affiliations

  • N. L. Radyukina
    • 1
  • Yu. V. Ivanov
    • 1
  • A. V. Kartashov
    • 1
    • 2
  • N. I. Shevyakova
    • 1
  • V. Yu. Rakitin
    • 1
  • V. N. Khryanin
    • 2
  • Vl. V. Kuznetsov
    • 1
    • 3
  1. 1.Timiryazev Institute of Plant PhysiologyRussian Academy of SciencesMoscowRussia
  2. 2.Belinskii Penza Pedagogical State UniversityPenzaRussia
  3. 3.Peoples’ Friendship UniversityMoscowRussia

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