Systemic wound signaling in tomato leaves is cooperatively regulated by systemin and hydroxyproline-rich glycopeptide signals

Systemic wound signaling in tomato leaves is cooperatively regulated by systemin and... Hydroxyproline-rich glycopeptides (HypSys peptides) have been isolated recently from tobacco and tomato leaves that are powerful activators of protease inhibitor synthesis. The peptides are processed from polyprotein precursors, two from a single tobacco precursor and three from a single tomato precursor. The precursor genes are expressed in response to wounding and methyl jasmonate, similar to the expression of the systemin precursor prosystemin in tomato leaves. Here we investigate the relationships between systemin and the tomato HypSys peptides in regulating wound signaling in tomato plants. Analysis of transgenic tomato plants over-expressing sense and antisense constructs of the tomato HypSys precursor under the 35S CaMV promoter show that the transgenic plants regulate protease inhibitor gene expression in response to wounding in a manner similar to prosystemin. The evidence indicates that the expression of both the tomato HypSys precursor gene and the prosystemin gene in response to wounding are necessary for strong systemic signaling. The data supports a role for both genes in an amplification loop that up-regulates the octadecanoid pathway and the synthesis of jasmonates to effect strong systemic signaling of defense genes. This report provides the first demonstration of the involvement of two plant peptides derived from two unrelated genes in regulating long distance wound signaling in plants. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Systemic wound signaling in tomato leaves is cooperatively regulated by systemin and hydroxyproline-rich glycopeptide signals

Loading next page...
 
/lp/springer_journal/systemic-wound-signaling-in-tomato-leaves-is-cooperatively-regulated-MWzWOxap1C
Publisher
Springer Journals
Copyright
Copyright © 2007 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/s11103-007-9242-z
Publisher site
See Article on Publisher Site

Abstract

Hydroxyproline-rich glycopeptides (HypSys peptides) have been isolated recently from tobacco and tomato leaves that are powerful activators of protease inhibitor synthesis. The peptides are processed from polyprotein precursors, two from a single tobacco precursor and three from a single tomato precursor. The precursor genes are expressed in response to wounding and methyl jasmonate, similar to the expression of the systemin precursor prosystemin in tomato leaves. Here we investigate the relationships between systemin and the tomato HypSys peptides in regulating wound signaling in tomato plants. Analysis of transgenic tomato plants over-expressing sense and antisense constructs of the tomato HypSys precursor under the 35S CaMV promoter show that the transgenic plants regulate protease inhibitor gene expression in response to wounding in a manner similar to prosystemin. The evidence indicates that the expression of both the tomato HypSys precursor gene and the prosystemin gene in response to wounding are necessary for strong systemic signaling. The data supports a role for both genes in an amplification loop that up-regulates the octadecanoid pathway and the synthesis of jasmonates to effect strong systemic signaling of defense genes. This report provides the first demonstration of the involvement of two plant peptides derived from two unrelated genes in regulating long distance wound signaling in plants.

Journal

Plant Molecular BiologySpringer Journals

Published: Sep 25, 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 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