Morphology and Ultrastructure of Staphylococcal L Colonies: Light, Scanning, and Transmission Electron Microscopy

Fass, Robert J.

doi:10.1128/jb.113.2.1049-1053.1973

Cited by 9 publications

(2 citation statements)

References 11 publications

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“…SEM had already been used in the first half of the 20 th century (Zworykin et al 1942). Since that time, SEM has been used for the identification of species in different groups of organisms such as bacteria, fungi, lichens, mosses, and vascular plants (Duckett and Soni 1972;Jamjoom 2007;Rewicz et al 2017a, b;Fass 1973;Ullah et al 2018). Nowadays, SEM is playing a useful role in taxonomic research of plants.…”

Section: Introductionmentioning

confidence: 99%

Achene micromorphology and its taxonomic significance in some species in Taraxacum sect. Palustria (Asteraceae)

Rewicz¹,

Marciniuk²,

Marciniuk³

2020

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The genus Taraxacum is one of the largest and taxonomically most complicated apomictic genera. Currently, it is considered to consist of over 2800 species placed within 60 sections. Due to the large number of species, and their uniform morphological design and plasticity of leaves, the identification of plants at the species level is challenging even for specialists. This problem significantly hinders the study of their properties and the rational use of these valuable medicinal and nutritional plants. This paper presents the results of research on the morphology and micromorphology of achenes of 28 Taraxacum species of sect. Palustria and for comparison one species per section of: Erythrosperma, Naevosa, Piesis, and Taraxacum. The achenes were measured with a stereoscopic microscope and a biometric program, and micromorphological studies were performed by scanning electron microscopy. It has been shown that traits associated with achene morphology and micromorphology have a high diagnostic value, allowing us to distinguish sections as well as species within the sect. Palustria. Based on the examined achene features, a dichotomous key for determining the studied species was constructed.

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Section: Introductionmentioning

confidence: 99%

Achene micromorphology and its taxonomic significance in some species in Taraxacum sect. Palustria (Asteraceae)

Rewicz¹,

Marciniuk²,

Marciniuk³

2020

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“…To find out more about the fine structure of the observed macroscopic patterns, I undertook an analysis of Pseudomonas putida colonies with the scanning electron microscope (SEM). Previous SEM examinations of bacterial colonies have indicated regularities in cellular organization and extracellular features of colony architecture (1,2,6,8,19). However, these earlier studies were limited in two respects relevant to developmental analysis.…”

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confidence: 99%

Scanning electron microscope study of Pseudomonas putida colonies

Shapiro¹

1985

J Bacteriol

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Pseudomonas putida colonies were examined by scanning electron microscope. A variety of cell morphologies, multicellular arrangements, and extracellular materials were observed in the fixed material. Different regions of a single colony showed characteristic organizations of these architectural elements. In some cases, the detailed microstructure of the fixed colony surfaces observed by scanning electron microscopy could be correlated with macroscopic patterns visualized by histochemical staining and surface relief photography of live colonies. Extracellular materials were seen to extend onto the agar surface beyond the boundaries of the cell mass, and the final structures of these materials, after fixation and desiccation, were colony specific. The significance of these features of colony microstructure for formulating hypotheses about the control of colony morphogenesis is discussed.

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Pleomorphic Bacterial Intracytoplasmic Bodies: Basic Biology and Medical Significance

DomingueSr.

1997

Eukaryotism and Symbiosis

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Morphology and Ultrastructure of Staphylococcal L Colonies: Light, Scanning, and Transmission Electron Microscopy

Abstract: Scanning electron microscopy utilizing critical point drying was used in parallel with light and transmission electron microscopy to study L colonies produced by a stable L-phase variant of Staphylococcus aureus (AH24H).

Cited by 9 publications

References 11 publications

Achene micromorphology and its taxonomic significance in some species in Taraxacum sect. Palustria (Asteraceae)

Achene micromorphology and its taxonomic significance in some species in Taraxacum sect. Palustria (Asteraceae)

Scanning electron microscope study of Pseudomonas putida colonies

Pleomorphic Bacterial Intracytoplasmic Bodies: Basic Biology and Medical Significance

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