COEVOLUTIONARY GENETICS OF PLANTS AND PATHOGENS

被引：160
作者：
FRANK, SA
机构：
[1] Department of Ecology and Evolutionary Biology, University of California, Irvine, 92717, CA
来源：
EVOLUTIONARY ECOLOGY | 1993年 / 7卷 / 01期
关键词：
PLANT DISEASE; GENETIC POLYMORPHISM; GENE-FOR-GENE; EPIDEMIOLOGY;
D O I：
10.1007/BF01237734
中图分类号：
Q14 [生态学（生物生态学）];
学科分类号：
071012 ; 0713 ;
摘要：
The genetic polymorphism maintained by host-pathogen coevolution is analysed in a multilocus model. The model assumes gene-for-gene interactions of the type commonly observed between host plants and their fungal pathogens. Unstable (epidemic) systems maintain more resistance genes, fewer virulence genes, and less overall genetic diversity than stable (endemic) diseases. The stability of the system depends primarily on demographic parameters, such as the pathogen's intrinsic rate of increase, rather than genetic parameters, such as the costs of resistance and virulence. At equilibrium the model predicts that the number of resistance alleles in each host plant follows a binomial distribution that depends on the cost to the pathogen for carrying virulence alleles. Similarly, the number of virulence alleles in each pathogen spore follows a binomial distribution that depends on one minus the cost to the host for carrying resistance alleles. Data from wild populations match the predicted binomial distributions.
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页码：45 / 75
页数：31
相关论文
共 32 条
[1]  
Agrios G.N., Plant Pathology, (1988)
[2]  
Barrett J.A., The gene-for-gene hypothesis: parable or paradigm, Ecology and Genetics of Host-Parasite Interactions, pp. 215-25, (1985)
[3]  
Burdon J.J., Diseases and plant population biology, (1987)
[4]  
Burdon J.J., Phenotypic and genetic patterns of resistance to the pathogen Phakopsora pachyrhizi in populations of Glycine canescens, Oecol., 73, pp. 257-67, (1987)
[5]  
Burdon J.J., Jarosz A.M., Kirby G.C., Pattern and patchiness in plant-pathogen interactions—causes and consequences, Annual Review of Ecology and Systematics, 20, pp. 119-36, (1989)
[6]  
Burdon J.J., Brown A.H.D., Jarosz A.M., The spatial scale of genetic interactions in host-pathogen coevolved systems, Pests, Pathogens and Plant Communities, pp. 233-47, (1990)
[7]  
Callow J.A., Models of host-pathogen interaction, Genetics and Plant Pathogenesis, pp. 283-95, (1987)
[8]  
Clarke D.D., Campbell F.S., Bevan J.R., Genetic interactions between Senecio vulgaris and the powdery mildew fungus Erysiphe fischeri, Pests, Pathogens and Plant Communities, pp. 189-201, (1990)
[9]  
Crill P., An assessment of stabilizing selection in crop variety development, Annual Review of Phytopathology, 15, pp. 185-202, (1977)
[10]  
Day P.R., Genetics of Host-Parasite Interaction, (1974)
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