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Colonial morphology of various specimens of Pseudomonas aeruginosa, including mucoid types. In microbiology, colonial morphology refers to the visual appearance of bacterial or fungal colonies on an agar plate. Examining colonial morphology is the first step in the identification of an unknown microbe.
The English word fungus is directly adopted from the Latin fungus (mushroom), used in the writings of Horace and Pliny. [10] This in turn is derived from the Greek word sphongos (σφόγγος 'sponge'), which refers to the macroscopic structures and morphology of mushrooms and molds; [11] the root is also used in other languages, such as the German Schwamm ('sponge') and Schimmel ('mold').
Colonies are initially flat, but the centre of which later becomes raised and folded, with the periphery submerged. [4] On rich media like Sabouraud agar, colonies usually degenerate into white pleomorphic tufts within several weeks, and sometimes exude a red-brown pigment into its agar. [7] E. floccosum has septate, hyaline hyphae.
Actinomyces species may form endospores, and while individual bacteria are rod-shaped, Actinomyces colonies form fungus-like branched networks of hyphae. [3] The aspect of these colonies initially led to the incorrect assumption that the organism was a fungus and to the name Actinomyces , "ray fungus" (from Greek actis , ray or beam, and mykes ...
Colonies on culture medium may grow to several centimeters in height. Older colonies become grey to brown in color due to the development of spores. Mucor spores or sporangiospores can be simple or branched and form apical, globular sporangia that are supported and elevated by a column-shaped columella.
For instance, the bacterial colony is a cluster of identical cells (clones). These colonies often form and grow on the surface of (or within) a solid medium, usually derived from a single parent cell. [2] Colonies, in the context of development, may be composed of two or more unitary (or solitary) organisms or be modular organisms.
This category is for macroscopic and microscopic structures found on various kinds of fungi Wikimedia Commons has media related to Fungal morphology and anatomy . Contents
However, some examples of increased thermal resistance in filamentous fungi suggest a power-law relationship for memory and exposure to a stimulus. [23] Mycelia have also demonstrated the ability to edit their genetic structures within a lifetime due to antibiotic or other extracellular stressors, which can cause rapid acquisition of resistance ...