First published online January 23, 2004; 10.1105/tpc.016725
The Plant Cell 16:309-318 (2004)
© 2004 American Society of Plant Biologists
Convergent Evolution of Disease Resistance Gene Specificity in Two Flowering Plant Families
Tom Ashfield,
Laura E. Ong,
Kan Nobuta,
Christopher M. Schneider and
Roger W. Innes1
Department of Biology, Indiana University, Bloomington, Indiana 47405-7107
1 To whom correspondence should be addressed. E-mail rinnes{at}bio.indiana.edu; fax 812-855-6082.
Plant disease resistance (R) genes that mediate recognition of the same pathogen determinant sometimes can be found in distantly related plant families. This observation implies that some R gene alleles may have been conserved throughout the diversification of land plants. To address this question, we have compared R genes from Glycine max (soybean), Rpg1-b, and Arabidopsis thaliana, RPM1, that mediate recognition of the same type III effector protein from Pseudomonas syringae, AvrB. RPM1 has been cloned previously, and here, we describe the isolation of Rpg1-b. Although RPM1 and Rpg1-b both belong to the coiled-coil nucleotide binding site (NBS) Leu-rich repeat (LRR) class of R genes, they share only limited sequence similarity outside the conserved domains characteristic of this class. Phylogenetic analyses of A. thaliana and legume NBS-LRR sequences demonstrate that Rpg1-b and RPM1 are not orthologous. We conclude that convergent evolution, rather than the conservation of an ancient specificity, is responsible for the generation of these AvrB-specific genes.
This article has been cited by other articles:
|
|
|
|
 
V. Geffroy, C. Macadre, P. David, A. Pedrosa-Harand, M. Sevignac, C. Dauga, and T. Langin
Molecular Analysis of a Large Subtelomeric Nucleotide-Binding-Site-Leucine-Rich-Repeat Family in Two Representative Genotypes of the Major Gene Pools of Phaseolus vulgaris
Genetics,
February 1, 2009;
181(2):
405 - 419.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
R. W. Innes, C. Ameline-Torregrosa, T. Ashfield, E. Cannon, S. B. Cannon, B. Chacko, N. W.G. Chen, A. Couloux, A. Dalwani, R. Denny, et al.
Differential Accumulation of Retroelements and Diversification of NB-LRR Disease Resistance Genes in Duplicated Regions following Polyploidy in the Ancestor of Soybean
Plant Physiology,
December 1, 2008;
148(4):
1740 - 1759.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
T. K. Eitas, Z. L. Nimchuk, and J. L. Dangl
Arabidopsis TAO1 is a TIR-NB-LRR protein that contributes to disease resistance induced by the Pseudomonas syringae effector AvrB
PNAS,
April 29, 2008;
105(17):
6475 - 6480.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Ameline-Torregrosa, B.-B. Wang, M. S. O'Bleness, S. Deshpande, H. Zhu, B. Roe, N. D. Young, and S. B. Cannon
Identification and Characterization of Nucleotide-Binding Site-Leucine-Rich Repeat Genes in the Model Plant Medicago truncatula
Plant Physiology,
January 1, 2008;
146(1):
5 - 21.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
D. A. Samac and M. A. Graham
Recent Advances in Legume-Microbe Interactions: Recognition, Defense Response, and Symbiosis from a Genomic Perspective
Plant Physiology,
June 1, 2007;
144(2):
582 - 587.
[Full Text]
[PDF]
|
|
|
|
|
|
|
D. Sandhu, K. G. Schallock, N. Rivera-Velez, P. Lundeen, S. Cianzio, and M. K. Bhattacharyya
Soybean Phytophthora Resistance Gene Rps8 Maps Closely to the Rps3 Region
J. Hered.,
September 1, 2005;
96(5):
536 - 541.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
Y. Belkhadir, Z. Nimchuk, D. A. Hubert, D. Mackey, and J. L. Dangl
Arabidopsis RIN4 Negatively Regulates Disease Resistance Mediated by RPS2 and RPM1 Downstream or Independent of the NDR1 Signal Modulator and Is Not Required for the Virulence Functions of Bacterial Type III Effectors AvrRpt2 or AvrRpm1
PLANT CELL,
October 1, 2004;
16(10):
2822 - 2835.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
