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Helminthosporium maydis Suppresses Expression of Resistance to Helminthosporium carbonum in Corn
Author(s) -
Pascholati S. F.,
Nicholson R. L.
Publication year - 1983
Publication title -
journal of phytopathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 60
eISSN - 1439-0434
pISSN - 0931-1785
DOI - 10.1111/j.1439-0434.1983.tb00055.x
Subject(s) - inoculation , biology , spore , zea mays , resistance (ecology) , botany , microbiology and biotechnology , horticulture , agronomy
Inoculation of corn mesocotyls with Helminthosporium maydis (susceptible combination) at the same time or at intervals up to 45 h after inoculation with H. carbonum (resistant combination) suppressed the expression of resistance to H. carbonum . This occurred even when the ratio of H. carbonum to H. maydis spores was as much as 100:1. When inoculated at 60 h after H. carbonum, H. maydis was unable to suppress resistance expression and was also unable to establish a susceptible disease interaction.