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BacterioFiles Micro Edition 155 - Cells Save Superannuated Sequences

This episode: Bacteria are able to incorporate DNA from the environment into their genomes, even if it's thousands of years old!


(9.6 MB, 10.5 minutes)


Show notes: 
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Talking Bacteria

Quorum sensing is one of the most amazing things about bacteria. More and more research is focusing on potential quorum sensing applications in biomedicine and many other fields of life sciences.

This is a video that I made about QS for a competition in my University. No previous science bac... Read More

Bacteria in space!

Where humans travel, bacteria will follow. If people are in space for any amount of time, bacteria are sure to thrive there so it’s good to know that there are already researchers looking at how the environment within spaceships affects bacterial populations. Work done on planktonic colonies of ... Read More

UA Study on Flu Evolution May Change Textbooks, History Books

A new study published in the journal Nature provides the most comprehensive analysis to date of the evolutionary relationships of influenza virus across different host species over time. In addition to dissecting how the virus evolves at different rates in different host species, the study chall... Read More

Environment influences ability of bacterium to block malaria transmission

The environment significantly influences whether or not a certain bacterium will block mosquitoes from transmitting malaria, according to researchers at Penn State.

The researchers used a species of malaria parasite that affects rodents, Plasmodium yoelii, and the mosquito, Anopheles stephens... Read More

Host plants reprogram their root cells to accommodate symbiotic nitrogen-fixing bacteria

To enter into symbiosis with nitrogen-fixing bacteria, host plants reprogram their root cells. An LMU team has now identified a calcium-binding protein complex that can be persuaded to spontaneously induce the formation of root nodules.

In almost all ecosystems, plant growth rates are limited... Read More

The Fungus That Killed Darwin’s Frog

In his second expedition to South America, Darwin discovered many new species of animals and plants. The field observations obtained throughout this 5-year expedition provided the intellectual framework for the maturation of his ideas on evolution. It also introduced the world to a tiny (2-3 cm ... Read More

Pentagon agency tries to stop drug-resistant bacteria

The rise of drug-resistant bacteria and other biological threats has pushed the Pentagon to seek help developing small molecules that can stop some of the world's most dangerous pathogens.

The Defense Threat Reduction Agency, which seeks ways to stop or limit the effects of weapons of mass de... Read More

59,000 generations of bacteria, plus freezer, yield startling results

After 26 years of workdays spent watching bacteria multiply, Richard Lenski has learned a thing or two.

He's learned that naturalist Charles Darwin was wrong about some things. For one, evolution doesn't always occur in steps so slow and steady that changes can't be observed.
Lenski also lea... Read More

TWiV 272: Give peas a chance



 Hosts: Vincent Racaniello, Dickson Despommier, Read More

BART rider with measles potentially exposed thousands in San Francisco

Public health officials issued a warning Thursday that thousands of Bay Area residents were potentially exposed to measles last week when a UC Berkeley student with the virus attended classes in Berkeley and rode on BART.

The student, a Contra Costa County resident whose name was not released... Read More

Sweet Valentine

Four intracellular Toxoplasma gondii parasites are shown undergoing cellular division by an internal budding process known as endodyogeny. Staining with a T. gondii surface antigen provided heart-shaped images (shot on Valentine’s Day). The definitive host of these parasites is the cat, but they... Read More

Test for Persistent Lyme Infection Using Live Ticks Shown Safe in Clinical Study

In a first-of-its-kind study for Lyme disease, researchers have used live, disease-free ticks to see if Lyme disease bacteria can be detected in people who continue to experience symptoms such as fatigue or arthritis after completing antibiotic therapy. The technique, called xenodiagnosis, attem... Read More

How bacteria communicate with us to build a special relationship

Communication is vital to any successful relationship. Researchers from the Institute of Food Research and the University of East Anglia have discovered how the beneficial bacteria in our guts communicate with our own cells.

This is a key step in understanding how our bodies maintain a close ... Read More

Categorising bacteria in purple and pink

When confronted with a new bacteria there are a series of simple tests that can be carried out to give a rough idea of the properties of the bacteria you are dealing with. One of the simplest and most useful tests is known as “Gram staining” which is a process of staining cells either purple or ... Read More

Laser tool speeds up detection of Salmonella in food products

Purdue University researchers have developed a laser sensor that can identify Salmonella bacteria grown from food samples about three times faster than conventional detection methods.

Known as BARDOT (pronounced bar-DOH'), the machine scans bacteria colonies and generates a distinct black and... Read More

Bacteria and hand washing Pragmatic to school children in rural Nepal

Hand washing is thought to be effective for the prevention of transmission of
Diarrhea pathogens. However it is not conclusive that hand washing with soap is more
Effective at reducing contamination with bacteria associated with diarrhea than using water only. Read More

A Bacterial Bioluminescent Valentine's Day

In this short post, I celebrate Valentine's Day with words of light---using bioluminescent bacteria! Read More

Rare bacteria outbreak in cancer clinic tied to lapse in infection control procedure

Improper handling of intravenous saline at a West Virginia outpatient oncology clinic was linked with the first reported outbreak of Tsukamurella spp., gram-positive bacteria that rarely cause disease in humans, in a new report from the Centers for Disease Control and Prevention (CDC). The repor... Read More

Two new weapons in the battle against bacteria

Proteases are vital proteins that serve for order within cells. They break apart other proteins, ensuring that these are properly synthesized and decomposed. Proteases are also responsible for the pathogenic effects of many kinds of bacteria. Now chemists at the Technische Universitaet Muenchen ... Read More

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