Calcium Stimulates the Adaptation of Cultured Liquorice Cells to PEG-Induced Water Stress

Calcium Stimulates the Adaptation of Cultured Liquorice Cells to PEG-Induced Water Stress Calcium may be involved in plant tolerance to water deficit by regulating antioxidant metabolism or/and water relations. This study was designed to examine whether external Ca2+ would stimulate drought tolerance in cultured liquorice cells. Water stress induced by 15% PEG significantly reduced fresh weight and relative water content in liquorice cells, but external Ca2+ markedly increased them after stress for 7 days. The activities of catalase (CAT), superoxide dismutase (SOD) declined and activity of peroxidase (POD) slowly increased during water stress imposition. External calcium significantly enhanced SOD and CAT activities, but the effect on POD activity was weak. The effect of external Ca2+ on water deficit tolerance in liquorice cells was not due to the osmotic adjustment in culture medium. Under nonstress conditions, external calcium slightly increased the activities of SOD, CAT, and POD. Ca2+ signal in liquorice cells may be different under stress and nonstress conditions. Under water stress, Ca2+ signal involves in reactive oxygen species transduction pathway and affects the processes participating in regulation of antioxidative enzymes; under nonstress conditions, Ca2+ signal coming from external calcium might not participate in ROS signal transduction pathway resulting in antioxidative defense response in liquorice cells. Less malondialdehyde was accumulated after water stress for 7 days in Ca2+-treated cells than in untreated cells. It was proposed that external calcium could reduce the damage of water deficit and stimulate tolerance to it in liquorice cells by mitigating oxidative stress. Russian Journal of Plant Physiology Springer Journals

Calcium Stimulates the Adaptation of Cultured Liquorice Cells to PEG-Induced Water Stress

Loading next page...
Kluwer Academic Publishers-Plenum Publishers
Copyright © 2004 by MAIK “Nauka/Interperiodica”
Life Sciences; Plant Sciences
Publisher site
See Article on Publisher Site


You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • No expiration
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Start Free Trial

14-day Free Trial

Best Deal — 39% off

Annual Plan

  • All the features of the Professional Plan, but for 39% off!
  • Billed annually
  • No expiration
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.



billed annually
Start Free Trial

14-day Free Trial