Stress-protective effect of phenylpropanoid complex on potato plants in vitro

Stress-protective effect of phenylpropanoid complex on potato plants in vitro In order to identify factors governing the maintenance of intracellular redox homeostasis, we investigated the effect of phenylpropanoid complex (PPC) isolated from the root extract of Golden root (Rhodiola rosea L.) on the plants of potato (Solanum tuberosum L.) in vitro. It was found that plant treatment with 100 μM PPC brought about a 23% decrease in peroxidase activity in the cells of potato plants and induced a reversible increase in the level of lipid peroxidation (POL) under oxidative stress caused by paraquat. In the presence of NADH known as an oxidase substrate of peroxidases (PO), a decrease in peroxidase activity was associated with switching peroxidase over to oxidase function. This effect was accompanied by a rise in the superoxide dismutase activity by 34% and identical POL elevation. After plant pretreatment with NADPH-oxidase inhibitor diphenylene iodinum, the stimulation of these processes upon the exposure to PPC decreased by 14 and 24%, respectively. This may point to the participation of a PO/NADPH-oxidase tandem in ROS generation. Along with a decrease in peroxidase function of PO, we also observed an opposite effect: in 3 h after the exposure to PPC, its activity rose, which depended on the ability of PPC to switch peroxidase from oxidative to reductive function and back. It was found that the observed effects of PPC comprise not only the respective modulation of antioxidant enzyme activity but also direct ROS quenching. The latter effect of PPC, detected by the rate of a decrease in the level of superoxide anion considerably exceeded the effect of individual antioxidants (salidroside and ascorbic acid), whose inhibitory activity was 5 times lower than the activity of PPC. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Stress-protective effect of phenylpropanoid complex on potato plants in vitro

Loading next page...
 
/lp/springer_journal/stress-protective-effect-of-phenylpropanoid-complex-on-potato-plants-dQC7PhRdBq
Publisher
Springer US
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443714010166
Publisher site
See Article on Publisher Site

References

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

$49/month

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.

$588

$360/year

billed annually
Start Free Trial

14-day Free Trial