Bacterial Spore


Also found in: Dictionary, Thesaurus, Medical.
Related to Bacterial Spore: exosporium, bacterial capsule, forespore

Spore, Bacterial

 

an oval or rounded formation that occurs within bacilliform cells (sporiferous bacteria). Within each bacterial spore is a compact mass of deoxyribonucleic acid (DNA), ribonucleic acid (RNA), and protein. Bacterial spores are resistant to the effects of poisonous substances and other unfavorable external factors; the resistance results from the lower water content (15–20 percent) in spores than in vegetative cells, the presence of four to five dense, poorly permeable membranes, and the transition of the enzymes to an inactive state. The resistance of spores to high temperatures—some spores can survive boiling for 30 minutes or longer—is caused by the presence of a large quantity of the calcium salt of dipicolinic acid in the membranes.

Upon encountering a fresh nutrient medium, the spores germinate in a polar or equatorial manner, giving rise to new bacterialcells.

References in periodicals archive ?
Cutting, "Emerging applications of bacterial spores in nanobiotechnology," Journal of Nanobiotechnology, vol.
Sporicidal products are a common and effective way to gain control of fungal and bacterial spores during an outbreak; however, it is not recommended that sporicides be used on a daily basis in controlled environments.
Rabbits were exposed to a lethal dose of the anthrax causing bacterial spores (B.
Despite of the lower costs estimated for the non-axenic production process, active ureolytic bacterial spores are still too costly for practical application and prices below 2 [euro] per kg of spores dry weight should be strived for.
If a contamination does occur, an optional, preprogrammed and easy-to-follow vaporized hydrogen peroxide biodecontamination protocol is available, which effectively kills a wide variety of vegetative bacteria, bacterial spores, fungi, fungal spores and viruses in under four hours.
If a contamination does occur, an optional, pre-programmed and easy-to-follow vaporized hydrogen peroxide biodecontamination protocol is available, which effectively kills a wide variety of vegetative bacteria, bacterial spores, fungi, fungal spores and viruses in under four hours.
TouchClean antibacterial coating kills up to 99.9% of all bacteria upon contact protecting you and your loved ones from germs such as MRSA, E Coli, Salmonella, Difficille and bacterial spores.
PREPARATION OF BACTERIAL SPORES: From reference strain of Bacillus subtilis ATCC 6633, pure growth was obtained in nutrient agar plate, incubating for 24 hours at 37[degrees]C and after confirmation it is further sub cultured on nutrient agar slants in bigger test tubes (25 x 150 mm) with extra agar added and incubated horizontally for 10-14 days at 37[degrees]C.
With mighty bursts of rehydration, bacterial spores offer a new source of renewable energy.
BOSTON -- A new type of electrical generator uses bacterial spores to harness the untapped power of evaporating water, according to research at Harvard University.
30 ( ANI ): Researchers were able to use a small strip of latex rubber coated with bacterial spores to power a new electric generator.
Current methods used for bacterial spores elimination are mostly based on their thermal inactivation.