Ultrastructure of Nocardia Cell Growth and Development on Defined and Complex Agar Media

Author:

Beaman B. L.1,Shankel D. M.1

Affiliation:

1. Department of Microbiology, University of Kansas, Lawrence, Kansas 66044

Abstract

The cell growth of Nocardia strain 721-A on Brain Heart Infusion Agar (BHIA), nutrient agar, and chemically defined agar media was studied by light and electron microscopy. Light microscopy revealed a change in cell morphology induced by growth on BHIA. Electron microscopy demonstrated a concurrent change in intracellular complexity. On BHIA, the cells became bulbous and developed irregularly branched filaments which fragmented by multiple and random septation. These fragments appeared to undergo a secondary stage of development similar to that described for Arthrobacter . Cells grown on defined or nutrient agar did not become bulbous and lacked the unusual complexity found in cells grown on BHIA. Intracytoplasmic membranes were altered by the nutritional state of the cell and changed during cell development.

Publisher

American Society for Microbiology

Subject

Molecular Biology,Microbiology

Cited by 34 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. L-form bacteria, chronic diseases and the origins of life;Philosophical Transactions of the Royal Society B: Biological Sciences;2016-11-05

2. Nocardia;Bergey's Manual of Systematics of Archaea and Bacteria;2015-09-14

3. The Pathogenesis of Nocardia;Gram-Positive Pathogens;2014-04-30

4. Phylum XXVI. Actinobacteria phyl. nov.;Bergey’s Manual® of Systematic Bacteriology;2012

5. Filterable forms of Nocardia: a preferential site of infection in the mouse brain;Microbes and Infection;2009-07

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