| Description | Lactobacillus gasseri is a Gram-positive, rod-shaped bacterium that thrives in a temperature range of mesophilic, with a preference for temperatures between 20-40°C. As a chemoheterotroph, L. gasseri derives its energy from the breakdown of organic compounds, specifically carbohydrates, proteins, and fats. It produces energy through the process of fermentation, where it converts these compounds into metabolic byproducts such as lactate, acetate, and ethanol. The bacterium's ability to ferment glucose and other carbohydrates is key to its role in the human gut microbiome. L. gasseri is classified as a Gram-positive bacterium, indicating that its cell wall contains a thick peptidoglycan layer. Its rod-shaped morphology allows it to move freely in its environment, facilitating its ability to colonize and adhere to surfaces. As a bacterium found in various body sites, including the mouth, gut, genitourinary tract, and skin, L. gasseri is a common inhabitant of the human body. It can be found in all possible species and has been isolated from various sources, including feces, blood, and tissues. L. gasseri is an obligate anaerobe, meaning it cannot tolerate oxygen and requires a low-oxygen environment to survive. This adaptation allows it to thrive in areas of the body where oxygen levels are limited, such as the gut and oral cavity. In addition to its ability to produce lactic acid, L. gasseri has been found to have various physiological functions, including the production of antimicrobial compounds, modulation of the immune system, and facilitation of nutrient absorption. Its role in maintaining a healthy gut microbiome and contributing to overall human health has made it a key area of research, with potential applications in the development of probiotics and therapeutics. |
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