Host-pathogen diversity in a wild system: Chondrilla juncea-Puccinia chondrillina

被引:30
作者
Espiau C. [1 ]
Riviere D. [1 ]
Burdon J.J. [2 ,3 ]
Gartner S. [1 ]
Daclinat B. [1 ]
Hasan S. [1 ]
Chaboudez P. [1 ]
机构
[1] CSIRO Biological Control Unit, Campus International de Baillarguet
[2] Ctr. for Plant Biodiversity Research, CSIRO Division of Plant Industry, Canberra, ACT 2601
[3] AGROPOLIS, 34394 Montpellier Cedex 5, Avenue Agropolis
关键词
Clonality; Gene-for-gene interactions; Pathogenicity; Resistance; Susceptibility;
D O I
10.1007/s004420050361
中图分类号
学科分类号
摘要
The resistance structure of a Turkish population of the clonal, apomictic composite Chondrilla juncea and the pathotypic structure of a co-occurring population of its obligate rust pathogen, Puccinia chondrillina, was determined by sequential inoculation of 19 host lines with 15 pathogen isolates each derived from single pustules collected from separate plants among the host population. The resultant matrix of resistant and susceptible reactions provides strong circumstantial evidence for a gene-for-gene interaction. Seven distinct pathotypes were detected in the pathogen population. One of these comprised 53% of the population, a second comprised 13%, while the remaining five pathotypes were each detected only once. The host population was similarly diverse, being composed of eight resistance phenotypes, only two of which were represented by more than one host line. Although C. juncea is apomictic, there was only 58% congruence between host resistance and multi-locus isozyme phenotype categories within this population. Pathotypic phenotypes of 13 other isolates of P. chondrillina collected from ten other Turkish and three more distant populations of C. juncea were markedly different from those found in the population studied in detail. There was no obvious relationship between the degree of geographic separation of pathotypes and their ability to attack particular C. juncea lines in this or three other populations represented by single host lines.
引用
收藏
页码:133 / 139
页数:6
相关论文
共 31 条
[1]  
Alexander H.M., Antonovics J., Disease spread and population dynamics of anther-smut infection of Silene alba caused by the fungus Ustilago violacea, J Ecol, 76, pp. 91-104, (1988)
[2]  
Anagnostakis S.L., Kranz J., Population dynamics of Cryphonectria parasitica in a mixed-hardwood forest in Connecticut, Phytopathology, 77, pp. 751-754, (1987)
[3]  
Augspurger C.K., Seedling survival of tropical tree species: Interaction of dispersal distance, light gaps and pathogens, Ecology, 65, pp. 1705-1712, (1984)
[4]  
Bevan J.R., Clarke D.D., Crute I.R., Variation for virulence in Erysiphe fischeri from Senecio vulgaris, Plant Pathol, 42, pp. 622-635, (1993)
[5]  
Bevan J.R., Clarke D.D., Crute I.R., Resistance to Erysiphe fisheri in two populations of Senecio vulgaris, Plant Pathol, 42, pp. 636-646, (1993)
[6]  
Burdon J.J., Diseases and Plant Population Biology, (1987)
[7]  
Burdon J.J., Phenotypic and genetic patterns of resistance to the pathogen Phakopsora pachyrhizi in populations of Glycine canescens, Oecologia, 73, pp. 257-267, (1987)
[8]  
Burdon J.J., The distribution and origin of genes for race specific resistance to Melampsora lini in Linum marginale, Evolution, 48, pp. 1564-1575, (1994)
[9]  
Burdon J.J., Jarosz A.M., Host-pathogen interactions in natural populations of Linum marginale and Melampsora lini. I. Patterns of resistance and racial variation in a large host population, Evolution, 45, pp. 205-217, (1991)
[10]  
Burdon J.J., Jarosz A.M., Temporal variation in the racial structure of flax rust (Melampsora lini) populations growing on natural stands of wild flax (Linum marginale): Local versus metapopulation dynamics, Plant Pathol, 41, pp. 165-179, (1992)