|
Plant Cell, Vol. 13, 153-161, January 2001, Copyright © 2001, American Society of Plant Physiologists
Syringolin Reprograms Wheat to Undergo Hypersensitive Cell Death in a Compatible Interaction with Powdery Mildew
Urs Wäspia,
Patrick Schweizera, and
Robert Dudlera
a Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, CH-8008 Zurich, Switzerland
Correspondence to:
Robert Dudler, rdudler{at}botinst.unizh.ch (E-mail), 41-1-634-82-04 (fax)
We had previously isolated and characterized syringolin A, one of the molecular determinants secreted by Pseudomonas syringae pv syringae that is perceived by nonhost plant species such as rice. Here, we show that syringolin A is recognized by wheat and that it induces the accumulation of gene transcripts and increases protection against powdery mildew when applied before inoculation. Moreover, syringolin A essentially eradicates powdery mildew from infected wheat if applied after inoculation. This curative effect is accompanied by the induction of cell death and the reactivation of pathogenesis-related genes whose transcript levels initially accumulate after powdery mildew inoculation but then decline during the later course of infection. Because syringolin A has no fungicidal activity against a variety of fungi and its action on wheat cannot be mimicked by the fungicide cyprodinil, syringolin A is hypothesized to counteract the suppression of host defense reactions imposed by the pathogen on the colonized cells.
This article has been cited by other articles:

|
 |

|
 |
 
R. W.M. Fung, M. Gonzalo, C. Fekete, L. G. Kovacs, Y. He, E. Marsh, L. M. McIntyre, D. P. Schachtman, and W. Qiu
Powdery Mildew Induces Defense-Oriented Reprogramming of the Transcriptome in a Susceptible But Not in a Resistant Grapevine
Plant Physiology,
January 1, 2008;
146(1):
236 - 249.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
T. L. Graham, M. Y. Graham, S. Subramanian, and O. Yu
RNAi Silencing of Genes for Elicitation or Biosynthesis of 5-Deoxyisoflavonoids Suppresses Race-Specific Resistance and Hypersensitive Cell Death in Phytophthora sojae Infected Tissues
Plant Physiology,
June 1, 2007;
144(2):
728 - 740.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
M. Y. Graham
The Diphenylether Herbicide Lactofen Induces Cell Death and Expression of Defense-Related Genes in Soybean
Plant Physiology,
December 1, 2005;
139(4):
1784 - 1794.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
V. Pavet, E. Olmos, G. Kiddle, S. Mowla, S. Kumar, J. Antoniw, M. E. Alvarez, and C. H. Foyer
Ascorbic Acid Deficiency Activates Cell Death and Disease Resistance Responses in Arabidopsis
Plant Physiology,
November 1, 2005;
139(3):
1291 - 1303.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
H. Feil, W. S. Feil, P. Chain, F. Larimer, G. DiBartolo, A. Copeland, A. Lykidis, S. Trong, M. Nolan, E. Goltsman, et al.
Comparison of the complete genome sequences of Pseudomonas syringae pv. syringae B728a and pv. tomato DC3000
PNAS,
August 2, 2005;
102(31):
11064 - 11069.
[Abstract]
[Full Text]
[PDF]
|
 |
|

|
 |

|
 |
 
J. M. Warren and S. F. Covert
Differential Expression of Pine and Cronartium quercuum f. sp. fusiforme Genes in Fusiform Rust Galls
Appl. Envir. Microbiol.,
January 1, 2004;
70(1):
441 - 451.
[Abstract]
[Full Text]
[PDF]
|
 |
|
|
|