Exogenous nitric oxide-mediated GSH-PC synthesis pathway in tomato under copper stress

Exogenous nitric oxide-mediated GSH-PC synthesis pathway in tomato under copper stress Nitric oxide (NO) is a bioactive molecule that is extensively used at various biotic and abiotic stresses. This study investigated the law governing the variation of related enzymatic activity and metabolites in exogenous NO-mediated GSH-PC synthesis pathway in tomato solution culture subjected to copper stress. Results demonstrated that relative to control copper stress was more effective in the activation of γ-ECS and GS in tomato. Moreover, sharp increases in root GSH and PCs were observed, which keep upward as the process continued. Moreover, adding exogenous SNP (NO donor) can further improve γ-ECS and GS activities in tomato roots and facilitate the synthesis of GSH and PCs, thereby enhancing its peroxide removal ability, chelating excessive Cu2+, and reducing its biotoxicity. The GSH-PC metabolism in the tomato leaves lagged behind that in the roots to a certain extent. Although exogenous GSH synthesis inhibitor BSO inhibited γ-ECS activity in tomato roots, as well as GSH and PC syntheses, adding SNP can counteract this effect by lessening the influence to the PCs in leaves. Under copper stress, exogenous NO may stimulate a signaling mechanism and reduce the biotoxicity and oxidative damage caused by excessive Cu2+ through activating or enhancing the enzymatic and non-enzymatic systems in the GSH-PC synthesis pathway. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

Exogenous nitric oxide-mediated GSH-PC synthesis pathway in tomato under copper stress

Loading next page...
 
/lp/springer_journal/exogenous-nitric-oxide-mediated-gsh-pc-synthesis-pathway-in-tomato-HN6a1DI3xo
Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443715030188
Publisher site
See Article on Publisher Site

Abstract

Nitric oxide (NO) is a bioactive molecule that is extensively used at various biotic and abiotic stresses. This study investigated the law governing the variation of related enzymatic activity and metabolites in exogenous NO-mediated GSH-PC synthesis pathway in tomato solution culture subjected to copper stress. Results demonstrated that relative to control copper stress was more effective in the activation of γ-ECS and GS in tomato. Moreover, sharp increases in root GSH and PCs were observed, which keep upward as the process continued. Moreover, adding exogenous SNP (NO donor) can further improve γ-ECS and GS activities in tomato roots and facilitate the synthesis of GSH and PCs, thereby enhancing its peroxide removal ability, chelating excessive Cu2+, and reducing its biotoxicity. The GSH-PC metabolism in the tomato leaves lagged behind that in the roots to a certain extent. Although exogenous GSH synthesis inhibitor BSO inhibited γ-ECS activity in tomato roots, as well as GSH and PC syntheses, adding SNP can counteract this effect by lessening the influence to the PCs in leaves. Under copper stress, exogenous NO may stimulate a signaling mechanism and reduce the biotoxicity and oxidative damage caused by excessive Cu2+ through activating or enhancing the enzymatic and non-enzymatic systems in the GSH-PC synthesis pathway.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Apr 29, 2015

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