HOME >> BIOLOGY >> NEWS
New method studies living bacterial cells

Researchers at the U.S. Department of Energy's Argonne National Laboratory have found a new way to study individual living bacteria cells and analyze their chemistry.

In research published today in Science, the scientists used high-energy X-ray fluorescence measurements for mapping and chemical analyses of single free-floating, or planktonic, and surface-adhered, or biofilm, cells of Pseudomonas fluorescens. The results showed differences between the planktonic and adhered cells in morphology, elemental composition and sensitivity to hexavalent chromium, a heavy-metal contaminant and a known carcinogen. The biofilm cells were more tolerant of the contaminant, while it damaged or killed the planktonic cells.

In addition to determining the chemical differences between the cells, the work also pioneers a potentially revolutionary new technique for investigating microbiological systems in natural subsurface environments. This study advanced the development of high-energy X-ray microprobes and methods for using the microprobes to investigate single bacterial cells. The new capabilities set the stage for future studies defining mineral-metal-microbe interactions in contaminated environments.

"This technique also should be directly applicable to investigations of microbial processes in extreme subsurface environments and to studies of a variety of astrobiology topics, such as detection of past or present life in samples returned from Mars, or determinations of the origins of life," said lead author Ken Kemner of Argonne's Environmental Research Division.

No previously available techniques had the spatial resolution needed to analyze individual bacterial cells noninvasively and nondestructively. Recent developments at the Advanced Photon Source (APS) at Argonne enabled the production of X-ray beams small enough to probe single bacterial cells, which are typically one-hundredth the diameter of a human hair. The APS provides the nation's mo
'"/>

Contact: Donna Jones Pelkie
djpelkie@anl.gov
630-252-5501
DOE/Argonne National Laboratory
22-Oct-2004


Page: 1 2 3

Related biology news :

1. Cost-effective method for gene silencing is featured in Cold Spring Harbor Protocols
2. A new method of adult stem cell growth efficacious in treatment of disorders of the cornea
3. Purdue-IU researchers explore new method for early disease diagnosis
4. Sequencing method yields fuller picture
5. New imaging method clarifies nutrient cycle
6. Researchers discover method for identifying how cancer evades the immune system
7. Bioinformatics-related methods are featured in Cold Spring Harbor Protocols
8. New method for reading DNA sheds light on basis of cell identity
9. Nanoparticles hitchhike on red blood cells: a potential new method for drug delivery
10. Rutgers, Penn researchers capture research dollars to improve prostate cancer diagnostic methods
11. Developer of new method for treating bone defects wins WPI Entrepreneurship Award

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/19/2017)... , April 19, 2017 ... its vendor landscape is marked by the presence of ... is however held by five major players - 3M ... these companies accounted for nearly 61% of the global ... leading companies in the global military biometrics market boast ...
(Date:4/13/2017)... 2017 According to a new market research report ... Identity Administration, and Authorization), Service, Authentication Type, Deployment Mode, Vertical, and Region ... expected to grow from USD 14.30 Billion in 2017 to USD 31.75 ... ... MarketsandMarkets Logo ...
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ("NXT-ID" or ... independent Directors Mr. Robin D. Richards and Mr. ... the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive Officer said," ... and benefiting from their considerable expertise as we move forward ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... 2017 , ... At its national board meeting in North ... the co-founder, CEO and chief research scientist of Minnesota-based Advanced Space Technology and ... ARCS Alumni Hall of Fame . ASTER Labs is a technology development ...
(Date:10/11/2017)... 11, 2017  VMS BioMarketing, a leading provider of patient ... Clinical Nurse Educator (CNE) network, which will launch this week. ... among health care professionals to enhance the patient care experience ... and other health care professionals to help women who have ... ...
(Date:10/10/2017)... ... 10, 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, ... The bold new look is part of a transformation to increase awareness, appeal ... growth period. , It will also expand its service offering from its signature gourmet ...
(Date:10/10/2017)... Calif. , Oct. 10, 2017 SomaGenics ... from the NIH to develop RealSeq®-SC (Single Cell), expected ... for profiling small RNAs (including microRNAs) from single cells ... Program highlights the need to accelerate development of approaches ... "New techniques for measuring levels ...
Breaking Biology Technology:
Cached News: