Vol. 82 No: 3

Title:
Developing a screening system for resistance to anthracnose in grapevines using culture filtrates from Elsinoe ampelina

Authors:
H.K. YUN, K.S. PARK, J.H. ROH, Y.J. CHOI and S.B. JEONG

pp: 360-364

Abstract:
This study aimed to determine whether culture filtrates produced by Elsinoe ampelina Shear could be used as a substitute for pathogen inoculation or field screening of grape cultivars for resistance to anthracnose. Bioassays of grape leaves using culture filtrates showed that their phytotoxicities were host-selective. Ethyl acetate extracts of culture filtrates showed the same toxicities and host selectivity among grapevine cultivars. The range of plants sensitive to culture filtrates of the pathogen and their ethyl acetate extracts was consistent with the host range of the pathogen. Susceptible cultivars were sensitive even to highly-diluted culture filtrates. However, resistant cultivars were not affected even by the original culture filtrates. Susceptible cultivars were more sensitive to undiluted culture filtrates than to highly-diluted culture filtrates. This suggests that culture filtrates of the pathogen can be used as an alternative to pathogen inoculation, or to field tests to evaluate resistance to anthracnose in grapevines.

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