What does Micrococcus luteus?

What does Micrococcus luteus?

Micrococcus luteus (M. luteus) is a Gram-positive to Gram-variable, non-motile, coccus, saprotrophic bacterium. It can form in tetrads or irregular clusters but not in chains and belongs to the family Micrococcaceae. Its name stands for: microscopic (micro), of spherical shape (coccus), and yellow (luteus).

What class is Micrococcus luteus?


Micrococcus luteus
Phylum: “Actinobacteria”
Class: Actinobacteria
Order: Micrococcales
Family: Micrococcaceae

What type of Aerobe is Micrococcus luteus?

obligate aerobe
This bacteria is Gram-positive, spherical, and an obligate aerobe. M. luteus is part of the normal flora of the human skin.

Does Micrococcus luteus cause disease?

Micrococcus luteus is considered a non-pathogenic saprophyte of human skin and eye. Disease in man caused by this organism is not recorded in medical literature. We present a case of septic shock cause by M luteus.

Is Micrococcus luteus a Halophile?

This is in agreement with the reports of Ventosa et al., (1988) on the Biology of moderately halophilic bacteria [20]. The results from this research revealed that Micrococcus luteus, Staphylococcus aureus, and Staphylococcus lentus are halotolerant organisms.

How does Micrococcus luteus spread?

Micrococcus luteus is an aerobic, Gram-positive, spherical or coned bacterium of the Micrococcaceae family. In immunocompromised people, Micrococcus luteus may lead to skin infections. The main transmission path is direct or indirect contact with contaminated persons or objects.

Is Micrococcus luteus Aerotolerant?

Structure and Physiology. This bacteria is a Gram-positive, rod shaped, aerotolerant anaerobe.

How is Micrococcus luteus transmitted?

(bacterium) In immunocompromised people, Micrococcus luteus may lead to skin infections. The main transmission path is direct or indirect contact with contaminated persons or objects.

How is Micrococcus luteus treated?

In contrast to staphylococci (for which it may easily be mistaken) it is usually penicillin-sensitive. However, the most promising antibiotic regimen proposed for treatment of Micrococcus luteus seems to be a combination of vancomycin, amikacin, and rifampicin.

What is the size of Micrococcus luteus?

about 0.5-3.5 micrometer
A gram-positive aerobic harmless bacterium involved in the conversion of nitrate to nitrite. Micrococcus luteus has a size of about 0.5-3.5 micrometer in diameter arranged usually in irregular clusters and generally reduced nitrate.

Is Micrococcus luteus an obligate Aerobe?

luteus, is an obligate aerobe, that has been reported as the most common commensal species of Micrococcus found on human skin [16].

Is Micrococcus luteus resistant to antibiotics?

Each isolate exhibited marked resistance to the antibiotics, with multiple antibiotic resistance (MAR) index > 0.2. Escherichia coli showed the highest resistance (MAR index, 1) while Micrococcus luteus exhibited the least resistance (MAR index, 0.5) to the antibiotics used.

What kind of bacteria is Micrococcus luteus?

Micrococcus luteus is a Gram-positive, to Gram-variable, nonmotile, coccus, tetrad-arranging, pigmented, saprotrophic bacterium that belongs to the family Micrococcaceae. It is urease and catalase positive. An obligate aerobe, M. luteus is found in soil, dust, water and air, and as part of the normal flora of the mammalian skin.

When was Micrococcus luteus reclassified as Kocuria rhizophila?

Micrococcus luteus was formerly known as Micrococcus lysodeikticus. In 2003, it was proposed that one strain of Micrococcus luteus, ATCC 9341, be reclassified as Kocuria rhizophila.

How long has Micrococcus luteus survived on Earth?

Recent work by Greenblatt et al. demonstrate that Micrococcus luteus has survived for at least 34,000 to 170,000 years on the basis of 16S rRNA analysis, and possibly much longer. It was sequenced in 2010 and has one of the smallest genomes of free-living actinobacteria sequenced to date, comprising a single circular chromosome of 2,501,097 bp.

How can Micrococcus be distinguished from Staphylococcus aureus?

Aerobic acid production from glycerol and anaerobic acid production from glucose are two simple tests to distinguish Micrococcus from Staphylococcus [17]. In the present study, acid production from glycerol and glucose was also assessed. M. luteus species are negative for both glycerol and glucose utilization.