HOME >> BIOLOGY >> NEWS
Microbiologists find a new source of nitrogen fixation

Corkscrew bacteria in termite guts and natural waters help capture a key element

Microbiologists have discovered that a type of bacteria found in termite guts and in fresh and salt water plays a major role in the process of nitrogen fixation. All organisms require the element to survive.

In the June 29 issue of the journal Science, a team led by National Science Foundation (NSF)-funded microbiologist John Breznak of Michigan State University (MSU) reports that spirochetes - spiral and wavy-shaped bacteria - are important providers of nitrogen in termites, whose ability to thrive despite a nitrogen-poor diet of plant matter had posed a decades old puzzle.

Although nitrogen gas makes up 80 percent of the air we breathe, only certain microbes can capture and use it for growth - a process called nitrogen fixation. Once nitrogen gas becomes "fixed" by microbes, it enters the food chain and is ultimately used by plants and animals.

Scientists have known for about 30 years that nitrogen fixation occurs within termites and could furnish up to 60 percent of the insects' nitrogen needs. But the particular microbes performing that fixation had been unclear. With colleagues at MSU and the California Institute of Technology, Breznak isolated spirochetes from termite guts and grew them in test tubes where they could be examined in detail.

"The spirochetes not only contained the genes for nitrogen fixation," Breznak said, "they performed nitrogen fixation at rates consistent with those seen in living termites. This was very exciting, because nitrogen fixation had never been described before in these fascinating, widely distributed bacteria."

The researchers then examined other spirochetes and found that nitrogen fixation also occurs in free-living, aquatic spirochetes, implying that their impact is global. They also found genes for nitrogen fixation in spirochetes that inhabit the human mouth and the intes
'"/>

Contact: Tom Garritano
tgarrita@nsf.gov
703-292-8070
National Science Foundation
28-Jun-2001


Page: 1 2

Related biology news :

1. New Arizona State center brings science to policy on issues of water resources and urban growth
2. Posters highlight water, energy and other natural resource research
3. Tufts University establishes $4 million dollar tissue engineering resource center
4. Review article makes case for a new source of cells in the body
5. Most Americans not sure about the sources of high cholesterol
6. National Bioinformatics Resource Center to support infectious disease research
7. Cardiofunk mutation: Probable source of congenital heart defects
8. Nerac to expand patent collection with 17 more resources
9. Crystallographers take note: A synchrotron light source for your home lab
10. Bay area to get unique x-ray microscopy resource
11. Workshop for new synchrotron light source at Brookhaven

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


(Date:4/28/2016)... GOTHENBURG, Sweden , April 28, 2016 ... 1,491.2 M (139.9), up 966% compared with the first quarter of ... Operating profit totaled SEK 589.1 M (loss: 18.8) and the operating ... SEK 7.12 (loss: 0.32) Cash flow from operations was ... , The 2016 revenue guidance is unchanged, SEK 7,000-8,500 M. ...
(Date:4/15/2016)... April 15, 2016 Research ... Gait Biometrics Market 2016-2020,"  report to their offering.  ... ) , ,The global gait biometrics market is ... during the period 2016-2020. Gait analysis ... can be used to compute factors that are ...
(Date:3/29/2016)... BOCA RATON, Florida , March 29, 2016 /PRNewswire/ ... ("LegacyXChange" or the "Company") LegacyXChange "LEGX" and SelectaDNA/CSI Protect ... Synthetic DNA in ink used in a variety of ... preventing theft. Buyers of originally created collectibles from athletes ... authenticity through forensic analysis of the DNA. ...
Breaking Biology News(10 mins):
(Date:6/27/2016)... 2016  Global demand for enzymes is forecast ... to $7.2 billion.  This market includes enzymes used ... biofuel production, animal feed, and other markets) and ... Food and beverages will remain the largest market ... of products containing enzymes in developing regions.  These ...
(Date:6/27/2016)... June 27, 2016  Sequenom, Inc. (NASDAQ: ... healthier lives through the development of innovative products and ... the United States denied its petition ... claims of Sequenom,s U.S. Patent No. 6,258,540 (",540 Patent") ... established by the Supreme Court,s Mayo Collaborative Services v. ...
(Date:6/27/2016)... ... June 27, 2016 , ... Parallel 6 , the leading ... the Clinical Reach Virtual Patient Encounter CONSULT module which enables both audio ... and clinical trial team. , Using the CONSULT module, patients and physicians can schedule ...
(Date:6/27/2016)... Chapel Hill, N.C. (PRWEB) , ... June 27, ... ... of U.S. commercial operations for Amgen, will join the faculty of the ... will serve as adjunct professor of strategy and entrepreneurship at UNC Kenan-Flagler, with ...
Breaking Biology Technology:
Cached News: