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EXPERIMENTS ON THE MOVEMENT OF STREPTOMYCIN IN CHERRY TREES
Author(s) -
CROSSE J. E.,
GARRETT CONSTANCE M. E.
Publication year - 1958
Publication title -
annals of applied biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.677
H-Index - 80
eISSN - 1744-7348
pISSN - 0003-4746
DOI - 10.1111/j.1744-7348.1958.tb02212.x
Subject(s) - biology , streptomycin , penetration (warfare) , antibiotics , chromosomal translocation , pseudomonas , horticulture , transpiration stream , transpiration , botany , microbiology and biotechnology , bacteria , biochemistry , genetics , photosynthesis , operations research , gene , engineering
Systemic activity of streptomycin in cherry trees was investigated by studying the penetration of the antibiotic into leaves and its subsequent translocation. Antibiotic penetration appreciably suppressed infection with Pseudomonas morsprunorum. In detached leaves the uptake of the antibiotic was progressive with time. Widespread and rapid distribution of the antibiotic in the transpiration stream resulted from petiolar injection. Immersion of the laminae of intact leaves in the antibiotic resulted in a much slower translocation, possibly occurring in the transpiration stream. Evidence suggests that the antibacterial activity detected in fruiting spurs after field spraying is not dependent on the presence of leaves, but results from direct penetration of the antibiotic through the dermal tissues of the spur. It was concluded that foliar sprays at field concentrations were unlikely to result in significant systemic distribution of the antibiotic, but that localized activity might be an important factor in the control of bacterial canker.