Over-expression of AtDREB1A in chrysanthemum enhances tolerance to heat stress

Over-expression of AtDREB1A in chrysanthemum enhances tolerance to heat stress The effect of over-expression of AtDREB1A gene in chrysanthemums on heat stress tolerance was investigated. Transgenic plants with 35S:AtDREB1A construct (henceforth, 35S plants) and wild type (WT) plants were exposed to 45°C as a heat stress treatment. When heat-treated for 36 h and followed by a 3-week recovery, approximately 70% of the 35S plants, but less than 20% of the WT plants were survived. Leaf electrolyte leakage was significantly lower in 35S plants than in WT plants. cDNA macroarray analysis showed that 55 of 74 DREB1A regulon members were up-regulated under heat stress in WT plants. In comparison with WT plants, 35S plants displayed greatly enhanced expression of the genes including signal transduction, transcription and HSP70 in the early time, and the genes including photosynthesis and metabolism in the late time of the heat treatment. We also found that the 35S plants maintained significantly higher photosynthetic capacity, and elevated activity of Rubisco and sucrose-phosphate synthase under heat stress. These results suggest that improvement of heat stress tolerance in transgenic chrysanthemum may be associated with enhanced tolerance of photosynthesis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Over-expression of AtDREB1A in chrysanthemum enhances tolerance to heat stress

Loading next page...
 
/lp/springer_journal/over-expression-of-atdreb1a-in-chrysanthemum-enhances-tolerance-to-VpBsGXefp5
Publisher
Springer Netherlands
Copyright
Copyright © 2009 by Springer Science+Business Media B.V.
Subject
Life Sciences; Plant Pathology; Biochemistry, general; Plant Sciences
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-009-9468-z
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