The dual effects of salicylic acid on dehydrin accumulation in water-stressed barley seedlings

The dual effects of salicylic acid on dehydrin accumulation in water-stressed barley seedlings Dehydrins are a group of plant proteins that usually accumulate in response to environmental stresses. They are proposed to play specific protective roles in plant cells. Present study showed that the accumulation of dehydrins in water-stressed barley (Hordeum vulgare L.) seedlings was influenced by their treatment with salicylic acid (SA). The level of dehydrin proteins was increased by 0.20 mM SA, but decreased by 0.50 mM SA treatment. Both mRNA expression and protein accumulation of a typical barley dehydrin, DHN5, were enhanced by SA treatment when SA concentrations were lower than 0.25 mM. However, the higher SA concentrations significantly decreased the protein level of DHN5 despite of a stable mRNA level. Our results also showed that low SA concentrations (less than 0.25 mM) decreased the electrolyte leakage and malondialdehyde (MDA) and H2O2 contents in water-stressed barley seedlings. But high SA concentrations (more than 0.25 mM) enhanced H2O2 accumulation, tended to cause more electrolyte leakage, and increase MDA content. These data indicated that SA could up-regulate the dehydrin gene expression and protein accumulation. Since the protective role of dehydrins in plant cells, such effect could be an important reason for the SA-mediated alleviation on water stress injury. But excessive SA could suppress the accumulation of dehydrin proteins and aggravate the oxidative damage. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

The dual effects of salicylic acid on dehydrin accumulation in water-stressed barley seedlings

Loading next page...
 
/lp/springer_journal/the-dual-effects-of-salicylic-acid-on-dehydrin-accumulation-in-water-W00eTfD6e8
Publisher
Springer Journals
Copyright
Copyright © 2009 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Sciences ; Plant Physiology
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443709030078
Publisher site
See Article on Publisher Site

Abstract

Dehydrins are a group of plant proteins that usually accumulate in response to environmental stresses. They are proposed to play specific protective roles in plant cells. Present study showed that the accumulation of dehydrins in water-stressed barley (Hordeum vulgare L.) seedlings was influenced by their treatment with salicylic acid (SA). The level of dehydrin proteins was increased by 0.20 mM SA, but decreased by 0.50 mM SA treatment. Both mRNA expression and protein accumulation of a typical barley dehydrin, DHN5, were enhanced by SA treatment when SA concentrations were lower than 0.25 mM. However, the higher SA concentrations significantly decreased the protein level of DHN5 despite of a stable mRNA level. Our results also showed that low SA concentrations (less than 0.25 mM) decreased the electrolyte leakage and malondialdehyde (MDA) and H2O2 contents in water-stressed barley seedlings. But high SA concentrations (more than 0.25 mM) enhanced H2O2 accumulation, tended to cause more electrolyte leakage, and increase MDA content. These data indicated that SA could up-regulate the dehydrin gene expression and protein accumulation. Since the protective role of dehydrins in plant cells, such effect could be an important reason for the SA-mediated alleviation on water stress injury. But excessive SA could suppress the accumulation of dehydrin proteins and aggravate the oxidative damage.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: May 10, 2009

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 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

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

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off