Navigation Links
Bacterial biofilms as fossil makers
Date:11/24/2008

BLOOMINGTON, Ind. -- Bacterial decay was once viewed as fossilization's mortal enemy, but new research suggests bacterial biofilms may have actually helped preserve the fossil record's most vulnerable stuff -- animal embryos and soft tissues.

A team of 13 scientists led by Indiana University Bloomington biologists Rudolf and Elizabeth Raff found that the invasion of dying embryo cells by bacteria -- and the subsequent formation of densely packed bacterial biofilms inside the embryo cells -- can completely replace embryo cell structure, generating a faithful replica of the embryo. The scientists call this formation a "pseudomorph," a model of the embryo made of bacteria. Their report will appear online via the Proceedings of the National Academy of Sciences "Early Edition" as early as Nov. 24.

"The bacteria consume and replace all the cytoplasm in the cells, generating a little sculpture of the embryo," said Elizabeth Raff, the report's lead author. "We did find, however, that certain conditions must be met if the bacteria are going to aid the preservation process."

Among those conditions, Raff said that at the time of its death, the embryo must exist in a low-oxygen or reducing environment, such as the bottom of a deep ocean or buried in anoxic lakeside mud. If significant oxygen is available, the embryo will undergo "autolysis," or self-destruction, as digestive enzymes get free and wreak havoc. Without oxygen, autolytic enzymes remain stuck inside their organelle prisons.

"The next step, we believe, is that bacteria able to survive in low-oxygen conditions must then infest the cells of the dying embryo," Raff said.

The bacteria form biofilms, crowded assemblies of bacterial cells held together by sticky fibers made of proteins and sugars. As the biofilms fill the embryo cells, the tiny bacteria insinuate themselves between and among the organelles, forming a faithful representation of the cell's innards.'/>"/>

Contact: David Bricker
brickerd@indiana.edu
812-856-9035
Indiana University
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Legionnaires bacterial proteins work together to survive
2. Scripps research team blocks bacterial communication system to prevent deadly staph infections
3. Small RNA plays parallel roles in bacterial metabolism
4. New drug targets may fight tuberculosis and other bacterial infections in novel way
5. Bacterial infections in premature babies more common than previously realized
6. Tomato pathogen genome may offer clues about bacterial evolution at dawn of agriculture
7. Biochemists reveal details of mysterious bacterial microcompartments
8. Biologists surprised to find parochial bacterial viruses
9. Tomato pathogen genome may offer clues about bacterial evolution
10. Bacterial slime helps cause serious disease
11. A survivor in Greenland: A novel bacterial species is found trapped in 120,000-year-old ice
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Bacterial biofilms as fossil makers
(Date:12/22/2014)... -- The 2014 Holiday Season may be the brightest ... Intelligence reports that the long anticipated floodgates for ... that intensifying demand for smart phones, tablets, and ... a global market of 2.5 billion users with ... According to Maxine Most , ...
(Date:12/19/2014)... DUBLIN , Dec. 18, 2014 Research and ... addition of the "Micro Market Monitor: North America ... http://photos.prnewswire.com/prnh/20130307/600769 ... grow at a CAGR of 3.6% from 2014 to ... in this market, Canada is ...
(Date:12/19/2014)... 2014   LaunchKey , the first decentralized mobile ... Internet of Things era, today announced the close of ... was led by Metamorphic Ventures with participation from ENIAC ... and others.  LaunchKey has raised $4 million to date, ... team and bring LaunchKey to market in 2015. ...
Breaking Biology News(10 mins):First Season of Holiday Shopping with Mobile Biometric Payments Wraps Up With a Present for Biometrics Industry: A Rosy Forecast for More Than 2 Billion Users of 4.8 Billion Mobile Biometric Devices by 2020 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 2LaunchKey Raises $3 Million in Additional Funding Led by Metamorphic Ventures 3
... - Resistant wheat plants stave off attacks by Hessian fly ... to absorb nutrients, according to a study by Purdue University ... midguts - similar to human intestines - were observed in ... midgut function. Those that were given nothing to eat showed ...
... Allergies and Infectious Diseases (NIAID), part of the National ... totaling $15,254,919 to Tulane University for its ongoing efforts ... viral disease that threatens hundreds of thousands of people ... potential bioterrorism threat. The contract will include collaboration ...
... seems, are going on a diet, while others have ... rapidly rising temperatures due to global climate change, speculates ... Zoology, who has been measuring the evolving body sizes ... is most extreme. , Changes are happening primarily in ...
Cached Biology News:Resistant wheat goes for the gut to protect against Hessian flies 2Tulane receives $15 million NIH contract to develop vaccine and treatment for deadly fever 2Animals cope with climate change at the dinner table 2
(Date:12/24/2014)... 2014 PharmaBoardroom,s new report, ... and available for free download , digs deep into ... growth in the sector today. One area where ... been in developing a homegrown pharmaceutical manufacturing base, even if ... remains some way off. A cursory comparison with neighboring ...
(Date:12/22/2014)... PA & Brussels (PRWEB) December 22, 2014 ... (CfPIE), the global leader of technical training across ... Society for Clinical Data Management (SCDM) to provide ... and certification programs —providing access to the more ... partnership extends SCDM members with 10% off when registering ...
(Date:12/22/2014)... Dec. 22, 2014 GenomeDx Biosciences today announced ... Cancer Classifier, a genomic test for prostate cancer, was ... men managed by radical prostatectomy without adjuvant therapy. Although ... relatively uncommon, using tumor genomics to identify these men ... is an important advance. The study has been ...
(Date:12/22/2014)... 2014 Fertility Associates of Memphis has ... USA , a network of more than 20 contributing ... patients have fast access to a national pool of ... . Fertility Associates of Memphis is the only fertility ... option. , Dr. William Kutteh , director of ...
Breaking Biology Technology:PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 2Study Published in European Urology Shows that the Decipher Prostate Cancer Classifier is Predictive of Rapid Metastasis in High-Risk Men who have had Prostate Surgery 3Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3
... The nation's dysfunctional healthcare system may undermine any ... electronic health records, according to a featured speaker at this ... Grossman Dr. Jeff Grossman, president and CEO of the ... the role of IT in healthcare delivery. As he outlined ...
... as much as buildings and there are many stakeholders. But ... involved and excited, said presenters at the Digital Healthcare ... absolutely essential," said Peter Strombom, CIO of Meriter Hospital ... don't feel they're being heard, you're going to have trouble ...
... Santiago that research projects on his campus will get ... laugh at you. , ,"Let's get real," Santiago told ... of higher education in Wisconsin. "(UW-Milwaukee research programs) are ... periods of their evolution." , ,Likewise, don't suggest to ...
Cached Biology Technology:U.S. health system could undermine EHR progress 2U.S. health system could undermine EHR progress 3Healthcare leaders tell how they rally stakeholders around IT 2Why Milwaukee needs its own thriving research base 2Why Milwaukee needs its own thriving research base 3
Complexin-1/2 (FL-134)...
...
... (human, porcine) Endogenous potent vasoconstrictor ... receptor and modulates vascular tonus. ET-1, ET-2, ... distinct endothelin genes. ET-2 and ET-3 are ... and six amino acids, respectively. All three ...
HNF-1 Purified Anti-Mouse, Anti-Rat, Anti-Rabbit, Anti-Human clone 2, Isotype Mouse IgG 1 , 50 µg Consult technical datasheet for details....
Biology Products: