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Epidemiology of anthracnose caused by colletotrichum lindemuthianum on white bean phaseolus vulgaris in southern ontario canada survival of the pathogen


, : Epidemiology of anthracnose caused by colletotrichum lindemuthianum on white bean phaseolus vulgaris in southern ontario canada survival of the pathogen. Plant Disease 67(4): 402-404

Longevity of C. lindemuthianum varied greatly depending on environmental conditions. Moisture had a profound effect on its longevity. The fungus survived at least 5 yr in infected pods and seeds of P. vulgaris that were air-dried and kept in storage at 4.degree. C or in dry infected plant materials left in the field in sealed polyethylene envelopes that had no contact with water. In infected materials placed in nylon-mesh pouches and buried in the field in November, C. lindemuthianum could not be isolated after mid-May. Laboratory tests showed that an alternating wet-dry cycle was detrimental to survival of the fungus. The fungus in the infected pod segments lost viability after 3 cycles of 72 h wet and 72 h dry. The the field, there was no sign of anthracnose throughout the 1979 and 1980 growing seasons in plots on sites with heavily infected crops the previous year. The degree of transmission by seeds increased with increasing severity of infection and density of conidia in the infested seeds.

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Related references

Tu, J.C., 1983: Epidemiology of anthracnose caused by Colletotrichum lindemuthianum on white bean (Phaseolus vulgaris) in southern Ontario: survival of the pathogen. Longevity of the fungus varied greatly with environmental conditions, especially moisture. It survived at least 5 yr in air-dried infected pods and seeds stored at 4 deg C or in dry infected plant materials left in the field in sealed polyethylene...

T.J.C., 1981: Anthracnose colletotrichum lindemuthianum on white bean phaseolus vulgaris cultivar fleetwood in southern ontario canada spread of the disease from an infection focus. Spread of anthracnose (C. lindemuthianum, delta race) from an initial infection focus was studied in 1978 and 1979 in field plots planted with a susceptible white bean cultivar (P. vulgaris Fleetwood). Splashing rain spread the disease for short d...

Tu, J.C., 1981: Anthracnose (Colletotrichum lindemuthianum) on white bean (Phaseolus vulgaris L.) in southern Ontario: spread of the disease from an infection focus. The spread was studied in field plots planted with Fleetwood, a susceptible cv. Splashing rain spread the pathogen for short distances, although some plants adjacent to diseased ones were not infected. Long distance spread (3-4.6 m/rainstorm) was...

Sindhan, G.; Bose, S., 1981: Epidemiology of anthracnose of French bean caused by Colletotrichum lindemuthianum Phaseolus vulgaris. Indian phytopathology 34(4): 484-487

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Guzman V.P.; Donado de la R.M., 1975: Studies on anthracnose of French bean (Phaseolus vulgaris L.) caused by Colletotrichum lindemuthianum (Sacc. & Magn.) Scrib., in the Popayan area. PI304110, Cornell 49-242, Preto 122, 125 and 138, PI310739, PI311979, Turrialba 1 and Hidalgo 31 appeared to be immune to the beta race, the only one found, but it is suggested that the results may have been affected by adverse weather conditions.

Claudiano, A.-Botreal; Castro, H.-Antonio-De; Alves, E.; Santos, J.-Bosco-Dos; Machado, J.-Da-Cruz, 1995: Effect of initial infection foci of anthracnose caused by Colletotrichum lindemuthianum (Sacc and Magn.) Scrib on common bean crops (Phaseolus vulgaris L.). This study refers to the influence of different levels of foci of the initial inoculum of Colletotrichum lindemuthianum on the incidence of anthracnose in common bean, in two different regions of the state of Minas Gerais, during the rainy season...

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Pompeu, A.S., 1979: Bean (Phaseolus vulgaris) lines resistant to the anthracnose fungus (Colletotrichum lindemuthianum). Crosses between the cvs. Aroana, Moruna and Carioca (recurrent parents) and Cornell 49-242 (donor), and backcrosses were made in the glasshouse. Seedlings from these crosses and backcrosses in the F2 and F1, respectively, were inoculated with a sp...

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