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Signal Molecules Inducing Systemic Resistance and Susceptibility in Barley Seedlings
Author(s) -
Hiramoto T.,
Tobimatsu R.,
Abe N.,
Shiraishi T.,
Oku H.,
Yamada T.,
Ichinose Y.
Publication year - 1995
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.1439-0434.1995.tb00199.x
Subject(s) - biology , exudate , hordeum vulgare , pruning , antifungal , botany , resistance (ecology) , horticulture , poaceae , microbiology and biotechnology , agronomy
Exudate collected from the cut end of barley seedlings exhibited both activities that induced systemic resistance and susceptibility against Erysiphe graminis f. sp. hordei race Hh4 depending on the time after pruning. Exudates collected between 3–6 h after pruning showed maximum activity that induced systemic resistance, whereas those during 9–12 h conversely induced susceptibility in barley seedlings. The accumulation of antifungal substances in barley leaves correlates to the timing, of induced resistance. The antifuntingal substances were watersoluble and severely affected the infection of E. graminis f. sp. hordei.