The morphology and cytology of Bacterium malvacearum , E. F. S
| Autor: | R. H. Stoughton |
|---|---|
| Rok vydání: | 1929 |
| Předmět: | |
| Zdroj: | Proceedings of the Royal Society of London. Series B, Containing Papers of a Biological Character. 105:469-484 |
| ISSN: | 2053-9185 0950-1193 |
| DOI: | 10.1098/rspb.1929.0056 |
| Popis: | During the course of studies on the angular leaf-spot disease of cotton, caused by the organism Bacterium ( Pseudomonas ) malvacearum , E. F. Smith, the production was constantly observed of bacterial forms differing from the normal structureless cell as seen in stained films from 24-hour old cultures of the organism. Of these the most conspicuous feature was the presence of deeply staining structures within the body, especially in preparations from cultures more than 4 days old. For some time these unusual forms were considered as artefacts produced by the staining technique, or else as contaminations. Observations of living bacteria from cultures derived from single cells, and especially evidence obtained from the examination of unfixed wet films by a technique described below, proved conclusively that neither of these explanations was correct, and that the organism possessed hitherto unrecorded internal structure and variations in morphology. An enormous mass of literature on the subject of bacterial structure and variation has now accumulated. Reference need only be made to the review by Löhnis (8) of the literature on the subject up to 1918, to the analysis of the problem of microbic dissociation by Hadley (5), to the relevant papers in the symposium edited by Jordan and Falk (6), and to the word of Enderlein, most of which has been brought together in his book “Bakterien-Cyclogenie” (3). |
| Databáze: | OpenAIRE |
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