Physiological mechanisms of adaptation of alloplasmic wheat hybrids to soil drought

Physiological mechanisms of adaptation of alloplasmic wheat hybrids to soil drought We studied physiological mechanisms of plant adaptation to drought for two alloplasmic wheat (Triticum aestivum L.) hybrids (APHs) on the cytoplasm of rye (Secale cereale L.) or ovate goatgrass (Aegilops ovata L.) and two standard regionalized spring wheat cultivars, Kometa and Priokskaya. In response to plant tissue dehydration, APHs rapidly reduced the transpiration rate and lost much less water than standard cultivars. During drought, peroxidase activity was significantly increased only in APH on the rye cytoplasm, whereas it declined substantially in cv. Kometa. Peroxidation of lipids (POL) was activated in cv. Kometa stronger than in hybrids, which also indicates that, in this cultivar, there was no complete detoxification of hydrogen peroxide under stress conditions. After watering resumption, APHs displayed a better capacity for reparation than standard cultivars, which was manifested in peroxidase activation and POL suppression, i.e., in more complete reduction of the oxidative stress consequences. We concluded that a higher APH drought resistance, as compared with standard cultivars, was determined by their more efficient antioxidant defense and a better capacity for recovery. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Physiological mechanisms of adaptation of alloplasmic wheat hybrids to soil drought

Loading next page...
 
/lp/springer_journal/physiological-mechanisms-of-adaptation-of-alloplasmic-wheat-hybrids-to-R6L1uU2waM
Publisher
Nauka/Interperiodica
Copyright
Copyright © 2007 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443707040073
Publisher site
See Article on Publisher Site

Abstract

We studied physiological mechanisms of plant adaptation to drought for two alloplasmic wheat (Triticum aestivum L.) hybrids (APHs) on the cytoplasm of rye (Secale cereale L.) or ovate goatgrass (Aegilops ovata L.) and two standard regionalized spring wheat cultivars, Kometa and Priokskaya. In response to plant tissue dehydration, APHs rapidly reduced the transpiration rate and lost much less water than standard cultivars. During drought, peroxidase activity was significantly increased only in APH on the rye cytoplasm, whereas it declined substantially in cv. Kometa. Peroxidation of lipids (POL) was activated in cv. Kometa stronger than in hybrids, which also indicates that, in this cultivar, there was no complete detoxification of hydrogen peroxide under stress conditions. After watering resumption, APHs displayed a better capacity for reparation than standard cultivars, which was manifested in peroxidase activation and POL suppression, i.e., in more complete reduction of the oxidative stress consequences. We concluded that a higher APH drought resistance, as compared with standard cultivars, was determined by their more efficient antioxidant defense and a better capacity for recovery.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Jul 24, 2007

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

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