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Classification of Actinomycetes | Microbiology

Actinomycetes are classified into 7 families. The classification is based on hyphal and reproductive structures. Family 1: Streptomycetaceae: Hyphae non-fragmented, aerial mycelium with chains of spores with 5 to 50 or more conidia per chain e.g. Streptomyces, Microdlobaspone and Sporictilhya. Family 2: Nocardiaceae: Hyphae typically fragmented e.g. Nocardia, Pseudonocardia. Family 3: Micromononsporaceae: Hyphae non-fragmented conidia borne singly or in pairs [...]

By |2016-11-28T11:04:45+00:00November 28, 2016|Bacteria|Comments Off on Classification of Actinomycetes | Microbiology

Classification of Pili | Bacteria

In this article we will discuss about the classification of pili. Mainly pili are of two types: (a) Common pili which act to adhere the cell to surfaces, and (b) Sex pili which join the other bacterial cell for transfer of genome. Ottow (1975) has classified the pili into the following six groups: Group 1: Fimbriae of this group act [...]

By |2016-11-28T11:04:44+00:00November 28, 2016|Bacteria|Comments Off on Classification of Pili | Bacteria

Capsule: Meaning and Functions | Bacteria

In this article we will discuss about the meaning and functions of capsule. Meaning of Capsule: Some of the bacterial cells are surrounded by the extracellular polymeric substances (EPS) which are commonly called capsule or glycocalyx. It forms an envelope around the cell wall and can be observed under light microscope after special staining technique (Fig.4.2). The presence of capsule [...]

By |2016-11-28T11:04:44+00:00November 28, 2016|Bacteria|Comments Off on Capsule: Meaning and Functions | Bacteria
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