Plant Physiol. email content delivery
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on December 21, 2007; 10.1104/pp.107.111302

OPEN ACCESS ARTICLE
This Article
Free via Open Access: OA
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrowOA All Versions of this Article:
146/2/703    most recent
pp.107.111302v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (8)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Anand, A.
Right arrow Articles by Mysore, K. S.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Anand, A.
Right arrow Articles by Mysore, K. S.
Agricola
Right arrow Articles by Anand, A.
Right arrow Articles by Mysore, K. S.

Received October 18, 2007
Accepted December 14, 2007

Salicylic acid and systemic acquired resistance play a role in attenuating crown gall disease caused by Agrobacterium tumefaciens

Ajith Anand , Srinivasa Rao Uppalapati , Choong-Min Ryu , Stacy N. Allen , Li Kang , Yuhong Tang , and Kirankumar S. Mysore *

Plant Biology Division, Samuel Roberts Noble Foundation, Ardmore, OK 73402, USA

* Corresponding author; email: ksmysore{at}noble.org.

We investigated the effects of salicylic acid (SA) and systemic acquired resistance (SAR) on crown gall disease caused by Agrobacterium tumefaciens. Nicotiana benthamiana plants treated with SA showed decreased susceptibility to Agrobacterium infection. Exogenous application of SA to Agrobacterium cultures decreased its growth, virulence and attachment to plant cells. Using Agrobacterium whole genome microarrays we characterized the direct effects of SA on bacterial gene expression and showed that SA inhibits induction of virulence (vir) genes, the repABC operon and differentially regulates the expression of many other sets of genes. Using virus-induced gene silencing we further demonstrate that plant genes involved in SA biosynthesis and signaling are important determinants for Agrobacterium infectivity on plants. Silencing of isochorismate synthase (ICS), non-expresser of PR-1 (NPR1), and salicylic acid binding protein-2 (SABP2) in N. benthamiana enhanced Agrobacterium infection. Moreover, plants treated with benzo-(1,2,3)-thiadiazole-7-carbothioic acid, a potent inducer of SAR, showed reduced disease symptoms. Our data suggest that SA and SAR both play a major role in retarding Agrobacterium infectivity.




This article has been cited by other articles:


Home page
 MicrobiologyHome page
Y.-L. Tsai, M.-H. Wang, C. Gao, S. Klusener, C. Baron, F. Narberhaus, and E.-M. Lai
Small heat-shock protein HspL is induced by VirB protein(s) and promotes VirB/D4-mediated DNA transfer in Agrobacterium tumefaciens
Microbiology, October 1, 2009; 155(10): 3270 - 3280.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
C.-W. Lee, M. Efetova, J. C Engelmann, R. Kramell, C. Wasternack, J. Ludwig-Muller, R. Hedrich, and R. Deeken
Agrobacterium tumefaciens Promotes Tumor Induction by Modulating Pathogen Defense in Arabidopsis thaliana
PLANT CELL, September 1, 2009; 21(9): 2948 - 2962.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
S. B. Gelvin
Agrobacterium in the Genomics Age
Plant Physiology, August 1, 2009; 150(4): 1665 - 1676.
[Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2007 by the American Society of Plant Biologists