What is actinomycetes in simple words?
Actinomycetes are Gram-positive mycelial bacteria, known to produce a wide variety of industrially and medically relevant compounds (antibiotics, chemotherapeutics, fungicides, herbicides and immunosuppressants).
Where do actinomycetes live?
Actinomyces species are ubiquitous, occurring in soil and in the microbiota of animals, including the human microbiota. They are known for the important role they play in soil ecology; they produce a number of enzymes that help degrade organic plant material, lignin, and chitin.
What are the uses of actinomycetes?
They play major roles in the cycling of organic matter; inhibit the growth of several plant pathogens in the rhizosphere and decompose complex mixtures of polymer in dead plant, animal and fungal material results in production of many extracellular enzymes which are conductive to crop production.
Is Actinomyces a bacteria?
Actinomycosis is usually caused by the bacterium called Actinomyces israelii. This is a common organism found in the nose and throat. It normally does not cause disease. Because of the bacteria’s normal location in the nose and throat, actinomycosis most commonly affects the face and neck.
What do actinomycetes feed?
– The Frankia family, works in a symbiotic relationship with many non legume plants as nitrogen fixing bacteria. – Other actinomycetes are decomposers digesting tough plant tissues like the cellulose and lignin in bark. – Paper and stems and the chitin or hard exoskeletons of insects.
Are actinomycetes true bacteria?
actinomycete, (order Actinomycetales), any member of a heterogeneous group of gram-positive, generally anaerobic bacteria noted for a filamentous and branching growth pattern that results, in most forms, in an extensive colony, or mycelium.
Who discovered N gonorrhoeae?
A gram-negative, non-motile diplococcal bacterium, Neisseria (Figure) is named after Albert Ludwig Sigesmund Neisser, a German physician who discovered Neisseria gonorrhoeae in 1879.
Why actinomycetes are called Actinobacteria?
Actinobacteria are Gram-positive filamentous bacteria with a high guanine-plus-cytosine (G+C) content in their genomes. They grow by a combination of tip extension and branching of the hyphae. This is what gave them their name, which derives from the Greek words for ray (aktis or aktin) and fungi (mukēs).
Does Neisseria meningitidis ferment lactose?
Neisseria spp. produce acid from carbohydrates by oxidation, not fermentation. N. meningitidis oxidizes glucose and maltose, but not lactose or sucrose.
What are some examples of antithesis in science?
Examples of Antithesis: 1. When he became the first man to walk on the moon, Neil Armstrong said that it was a ” small step for man, but a giant leap for mankind.” 2.
What are some examples of Actinomycetes?
Examples of Actinomycetes include: 1 Actinomyces meyeri 2 Actinomyces israelii 3 Nocardia brasiliensis 4 Nocardia asteroides 5 Streptomyces coelicolor 6 Streptomyces scabies More
What is the role of Actinomyces in the environment?
While some members of this group cause diseases (e.g. actinomycosis caused by Actinomyces israelii), they are important soil organisms (where they break down various recalcitrant organic compounds) and also produce biologically active compounds that have been used as antibiotics and insecticides, etc.