Isolation of Arthrobacter Bacteriophages from a Soil Sample

0 Ansichten3:32 Min. • July 1st, 2026

Take a soil extract containing bacteriophages, including Arthrobacter phages, pre-mixed with a growth medium.

Add Arthrobacter bacteria and incubate under agitation.

Arthrobacter phages attach to the bacterial surface and inject their DNA to produce new phages.

The host cells lyse to release progeny phages, enriching the medium with Arthrobacter phages.

Dilute this medium to reduce the phage concentration.

Add fresh Arthrobacter cells and calcium ions, which aid in phage infection.

Mix with a soft agar and pour onto a nutrient agar plate. The solidifying soft agar immobilizes the bacteria and restricts the phage spread.

Upon incubation, each phage infects a nearby host cell. It then produces progeny phages that infect neighboring bacteria, allowing localized infection.

The uninfected bacterial cells grow, while the infected bacterial cells lyse, detected as clear zones called plaques over a bacterial lawn.

These plaques contain progeny phages, ready for downstream use.

Begin this procedure by adding 1 to 2.5 milliliters of late exponential or early stationary phase bacteria culture to each of the flasks containing filter sterilized LB soil extract mixture. If the OD 600 of the culture is 0.5 to 0.7, use 1 milliliter. If the OD600 is higher than 0.7, use 2.5 milliliters.

Shake the flasks at 250 RPM at 30 degrees Celsius for approximately 24 hours in a shaking incubator. After the 24 hour incubation period, remove the enrichment flasks from the shaking incubator. Dilute the enrichment samples tenfold in phage buffer.

Set up culture tubes with 0.5 milliliters of late exponential or early stationary phase bacteria culture. Add various amounts from 5 microliters to 500 microliters of the diluted enrichment culture to the culture tubes.

Add calcium chloride to the culture tubes to make a final concentration in 5 milliliters equal to the concentration present in the original enrichment flask. Use a range of different calcium chloride concentrations to select for many phages with varying calcium chloride dependencies. Add 4.5 milliliters of LB top agar to each culture tube, and pour the mixture onto an LB agar plate.

Swirl gently to distribute evenly across the plate and allow the top agar to solidify for approximately 15 minutes. Invert the plates and incubate at 30 degrees Celsius overnight to 48 hours. Vary the incubation times to optimize for the phages present.

09:23

Den Einfluss von Bakteriophagen in gemäßigten Breiten auf ihre Lysogene durch Transkriptomik verstehen

Ähnliche Videos

0 Aufrufe

08:46

T4-Bakteriophagen- und E. coli-Interaktion im murinen Darm: Ein prototypisches Modell zur Untersuchung der Wirt-Bakteriophagen-Dynamik in vivo

Ähnliche Videos

0 Aufrufe

07:19

Entfernung von Bakteriophagen aus infizierten Salmonellenkulturen

Ähnliche Videos

0 Aufrufe

03:16

Isolierung von antibiotikaresistenten Bakterien aus einer Wasserprobe für die molekulare Analyse

Ähnliche Videos

0 Aufrufe

02:18

Herstellung einer Bakterienkultur im Boden für eine Bakteriophageinfektion

Ähnliche Videos

0 Aufrufe

03:21

Isolation of Bacteriophages from a Soil Sample

Ähnliche Videos

0 Aufrufe

13:24

Eine optimierte Enrichment-Technik für die Isolierung von

Ähnliche Videos

0 Aufrufe

10:33

Isolierung von kultivierbaren Hefen und Schimmelpilzen aus Böden zur Untersuchung der Pilzpopulationsstruktur

Ähnliche Videos

0 Aufrufe

07:20

Bioprospektion extremophiler Mikroorganismen zur Bekämpfung der Umweltverschmutzung

Ähnliche Videos

0 Aufrufe

08:58

Isolierung und Identifizierung wässriger antibiotikaresistenter Bakterien und molekulare Charakterisierung ihrer Antibiotikaresistenzgene

Ähnliche Videos

0 Aufrufe

Zuletzt aktualisiert: 22 August 2026