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Virulence changes in Uromyces appendiculatus after five asexual generations on a partially resistant cultivar of Phaseolus vulgaris


, : Virulence changes in Uromyces appendiculatus after five asexual generations on a partially resistant cultivar of Phaseolus vulgaris. Phytopathology 75(4): 449-453

A field population of the bean pathogen, was obtained from the susceptible Pinto 111 in SW Minnesota, and maintained for 5 asexual generations on a partially resistant Slimgreen. Changes in latent period, pustule size, and urediospore production on Slimgreen and Pinto 111 over the generations were small or not detectable.

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Related references

Alexander H.M.; Groth J.V.; Roelfs A.P., 1985: Virulence changes in uromyces appendiculatus after 5 asexual generations on a partially resistant cultivar of phaseolus vulgaris. A field population of U. appendiculatus, the bean rust pathogen, was obtained from the susceptible cultivar Pinto III in southwestern Minnesota [USA], and maintained for 5 asexual generations on a partially resistant bean cultivar, Slimgreen. Chan...

Alexander, H.M.; Groth, J.V.; Roelfs, A.P., 1984: Pathogenicity changes in Uromyces appendiculatus after five asexual generations on a bean cultivar. Latent period, pustule size and uredospore production in a field-collected population of U. appendiculatus changed little after 5 asexual generations on the partially resistant cultivar Slimgreen. By contrast, there was an increase in the frequenc...

Alexander H.M.; Groth J.V.; Roelfs A.P., 1984: Pathogenicity changes in uromyces appendiculatus after 5 asexual generations on a bean cultivar. Phytopathology 74(7): 794

Shaik M.; Steadman J.R., 1985: Correlations between virulence frequency of uromyces appendiculatus var appendiculatus and pustule size on phaseolus vulgaris. Phytopathology 75(8): 966

Stavely, J.R.; Grafton, K.F., 1985: Genetics of resistance to eight races of Uromyces appendiculatus in Phaseolus vulgaris cultivar Mexico 235. Mexico 235 (M235) and B190 have resistance (R), expressed in the production of small uredosori, or necrotic hypersensitive resistance (HR) to most races of U. appendiculatus. F2 segregation from susceptible (S) Fiesta X M235 indicated that a singl...

Sandlin, C.; Steadman, J.; Araya, C.; Coyne, D., 1999: Isolates of Uromyces appendiculatus with specific virulence to landraces of Phaseolus vulgaris of Andean origin. Five isolates of the bean rust fungus Uromyces appendiculatus were shown to be specifically virulent on bean genotypes of Andean origin. This specificity was demonstrated by the virulence of five pairs of isolates on a differential set of 30 Phase...

Alleyne,A.T.; Steadman,J.R.; Eskridge,K.M., 2008: Monitoring changing virulence patterns of Uromyces appendiculatus in the resistant pinto bean cultivar Olathe by rep-PCR. Corresponding molecular markers associated with avirulence or virulence genes in the bean rust pathogen are currently unknown, although host resistance genes have been linked to molecular markers in bean. The changing virulence patterns in pathoty...

Shaik M.; Steadman J.R., 1989: The effect of leaf developmental stage on the variation of resistant and susceptible reactions of phaseolus vulgaris to uromyces appendiculatus. The effect of leaf developmental stage of beans (Phaseolus vulgaris) at the time of inoculation on the expression of various reactions to rust (Uromyces appendiculatus) was investigated. The areas of uredinia, fungal colonies, and secondary uredin...

Anonymous, 1986: Correlations between leaf age and susceptibility of phaseolus vulgaris l to uromyces appendiculatus var appendiculatus

Gold R.E.; Mendgen K., 1984: Cytology of basidiospore germination penetration and early colonization of phaseolus vulgaris by uromyces appendiculatus var appendiculatus. Cytological studies were done on a compatible interaction between P. vulgaris and U. appendiculatus var. appendiculatus. The cytoplasm of germinated basidiospores contained numerous microbodies in close association with lipid bodies, vacuoles and...