Abstract
Lechevalier, Hubert A. (Rutgers, The State University, New Brunswick, N.J.), Mary P. Lechevalier, and Pauline E. Holbert. Electron microscopic observation of the sporangial structure of strains of Actinoplanaceae. J. Bacteriol. 92:1228–1235. 1966.—Eight strains of Streptosporangium spp. and one strain each of Spirillospora albida and an Ampullariella-like Actinoplanes sp. were observed by electron microscopy. The sporangiospores of all these organisms had a smooth surface. All formed their sporangia by the ingrowth of a hypha inside a bag formed by the extension of the outer sheath of the sporangiophore. The sporogenic hypha was not branched in strains of Streptosporangium but was branched in S. albida and the Actinoplanes sp. Spore formation was by septation of the intrasporangial hyphae. When it occurred, septation took place by the same annular ingrowth of the cell wall common in gram-positive bacteria. The septum at the apex of the sporangiophore was formed before the others. Septation was seen to occur between two fully formed septa, indicating almost simultaneous formation of large segments dividing again, almost simultaneously, into smaller spore-sized segments.
Full text
PDF
Images in this article
Selected References
These references are in PubMed. This may not be the complete list of references from this article.
- BECKER B., LECHEVALIER M. P., LECHEVALIER H. A. CHEMICAL COMPOSITION OF CELL-WALL PREPARATIONS FROM STRAINS OF VARIOUS FORM-GENERA OF AEROBIC ACTINOMYCETES. Appl Microbiol. 1965 Mar;13:236–243. doi: 10.1128/am.13.2.236-243.1965. [DOI] [PMC free article] [PubMed] [Google Scholar]
- GLAUERT A. M., HOPWOOD D. A. The fine structure of Streptomyces violaceoruber (S. coelicolor). III. The walls of the mycelium and spores. J Biophys Biochem Cytol. 1961 Aug;10:505–516. doi: 10.1083/jcb.10.4.505. [DOI] [PMC free article] [PubMed] [Google Scholar]
- LECHEVALIER H., HOLBERT P. E. ELECTRON MICROSCOPIC OBSERVATION OF THE SPORANGIAL STRUCTURE OF A STRAIN OF ACTINOPLANES. J Bacteriol. 1965 Jan;89:217–222. doi: 10.1128/jb.89.1.217-222.1965. [DOI] [PMC free article] [PubMed] [Google Scholar]
- LUFT J. H. Improvements in epoxy resin embedding methods. J Biophys Biochem Cytol. 1961 Feb;9:409–414. doi: 10.1083/jcb.9.2.409. [DOI] [PMC free article] [PubMed] [Google Scholar]
- Lechevalier H., Lechevalier M. P. Classification des actinomycètes aérobies basée sur leur morphologie et leur composition chimique. Ann Inst Pasteur (Paris) 1965 May;108(5):662–673. [PubMed] [Google Scholar]
- RANCOURT M. W., LECHEVALIER H. A. ELECTRON MICROSCOPIC STUDY OF THE FORMATION OF SPINY CONIDIA IN SPECIES OF STREPTOMYCES. Can J Microbiol. 1964 Jun;10:311–316. doi: 10.1139/m64-042. [DOI] [PubMed] [Google Scholar]
- RANCOURT M., LECHEVALIER H. A. Electron microscopic observation of the sporangial structure of an actinomycete, Microellobosporia flavea. J Gen Microbiol. 1963 Jun;31:495–498. doi: 10.1099/00221287-31-3-495. [DOI] [PubMed] [Google Scholar]
- VAN BRUMMELEN J., WENT J. C. Streptosporangium isolated from forest litter in the Netherlands. Antonie Van Leeuwenhoek. 1957;23(3-4):385–392. doi: 10.1007/BF02545891. [DOI] [PubMed] [Google Scholar]
- Willoughby L. G. A conidial actinoplanes isolate from Blelham Tarn. J Gen Microbiol. 1966 Jul;44(1):69–72. doi: 10.1099/00221287-44-1-69. [DOI] [PubMed] [Google Scholar]
- YAMAGUCHI T. COMPARISON OF THE CELL-WALL COMPOSITION OF MORPHOLOGICALLY DISTINCT ACTINOMYCETES. J Bacteriol. 1965 Feb;89:444–453. doi: 10.1128/jb.89.2.444-453.1965. [DOI] [PMC free article] [PubMed] [Google Scholar]