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Fireblight: Occurrence of Bacterial Strands on Various Hosts under Glasshouse Conditions
Author(s) -
Edengreen S. J.,
Billing Eve
Publication year - 1972
Publication title -
plant pathology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.928
H-Index - 85
eISSN - 1365-3059
pISSN - 0032-0862
DOI - 10.1111/j.1365-3059.1972.tb01741.x
Subject(s) - biology , pear , exudate , shoot , botany , horticulture , greenhouse , inoculation
SUMMARY Exudate extruded in the form of aerial strands or threads has been observed on shoots and leaves of apple, pear, hawthorn and quince infected with fijreblight under glasshouse conditions. Strands were up to 100 mm long, with diameters 6–300 μ m; colourless, amber or brick red; unstable at high humidities and instantly soluble in water. Aqueous solutions gave viable bacterial counts equivalent to 10 7— 10 8 cells/mm 3 dry strand. The possible significance of these findings in disease epidemiology is discussed.