Navigation Links
Symbiotic bacteria program daily rhythms in squid using light and chemicals
Date:4/1/2013

Glowing bacteria inside squids use light and chemical signals to control circadian-like rhythms in the animals, according to a study to be published on April 2 in mBio, the online open-access journal of the American Society for Microbiology. The Hawaiian bobtail squid, Euprymna scolopes, houses a colony of Vibrio fischeri bacteria in its light organ, using the bacteria at night as an antipredatory camouflage while it ventures out to hunt. The results of the study show that, in addition to acting as a built-in lamp, the bacteria also control when the squid expresses a gene that entrains, or synchronizes, circadian rhythms in animals.

"To our knowledge, this is the first report of bacteria entraining the daily rhythms of host tissues," says corresponding author Margaret McFall-Ngai of the University of Wisconsin - Madison. If bacteria can entrain daily rhythms in an animal, McFall-Ngai says, it's reasonable to think these influences will eventually be found in other animals. It's possible that microbial partners in the human gut, for instance, could similarly influence human daily rhythms through chemical signaling.

Like all animals, squids make proteins that set their inner clock to environmental light. E. scolopes produces two of these "light entrainment" proteins (cryptochromes, or CRYs), and one is regulated in the squid's head, just like every other animal. McFall-Ngai and her co-authors noticed that escry1, the gene that encodes the other protein, is most highly expressed in the light organ, where the squid houses its glowing bacterial symbionts. "The animal uses the luminescence in the evening, so the luminescence is greatest at night. The gene escry1 cycles with the bioluminescence of the animal and not with environmental light," says McFall-Ngai.

But is it the bacterial luminescence that synchronizes the cycling, or is it the bacteria themselves? It's both, says McFall-Ngai.

The bacteria
'/>"/>

Contact: Jim Sliwa
jsliwa@asmusa.org
202-942-9297
American Society for Microbiology
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Genetically modified corn affects its symbiotic relationship with non-target soil organisms
2. Unique adaptations to a symbiotic lifestyle reveal novel targets for aphid insecticides
3. Carnivorous plants rely on the services and wastes of a symbiotic ant for nutrition
4. Bugs need symbiotic bacteria to exploit plant seeds
5. Leading evolutionary scientist to discuss how genome of bacteria has evolved
6. Study by UC Santa Barbara researchers suggests that bacteria communicate by touch
7. Team discovers how bacteria resist a Trojan horse antibiotic
8. From scourge to saint: E. coli bacteria becomes a factory - to make cheaper, faster pharmaceuticals
9. Bacterial shock to recapture essential phosphate
10. Disarming disease-causing bacteria
11. Study shows unified process of evolution in bacteria and sexual eukaryotes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/18/2015)...  Cepheid (NASDAQ: CPHD ) today announced that ... invited investors to participate via webcast. , Cowen and ... Tuesday, March 3, 2015 at 11.20 a.m. Eastern Time ... Wednesday, March 4, 2015 at 10.25 a.m. Eastern ... webcasts for these events, please visit Cepheid,s website at ...
(Date:2/12/2015)... 2015 NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce market, ... for DISTRIBUTED METHOD AND SYSTEM TO IMPROVE ... further establishes NXT-ID,s position in the emerging "Internet of ... ability for multiple devices to collaborate with one another ...
(Date:2/9/2015)...  Lintec of America recently announced an exclusive license ... macrostructures, including sheets, yarns and ribbons, developed at the ... the vast industrial resources of the global Lintec Group, ... of America is forming the Nano-Science and Technology Center ... on scaling up the manufacturing and commercialization of nano ...
Breaking Biology News(10 mins):Cepheid to Webcast Upcoming Financial Presentations 2NXT-ID Patents Collaborative Services to Enable the "Internet of Things" 2NXT-ID Patents Collaborative Services to Enable the "Internet of Things" 3Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 2Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 3Lintec announces exclusive license to commercialize innovative carbon nanotube technology from the University of Texas at Dallas 4
... Planck Institute for Human Cognitive and Brain Sciences and ... now developed a mathematical model which could significantly improve ... the future, this kind of algorithms which imitate brain ... them. Many people will have personal experience of ...
... cells for replication and production of virus progeny. Thus ... induces therapy resistance. New improved therapies attempt to targets ... The team led by Professor Dr. Ralf Bartenschlager, ... Hygiene Institute of Heidelberg University Hospital, has identified a ...
... at Carnegie Mellon University have developed an analytical technique ... complex disease syndromes such as diabetes, asthma and cancer, ... , Rather than searching one at a time for ... as in most conventional approaches, the Carnegie Mellon ...
Cached Biology News:Doing what the brain does -- how computers learn to listen 2Doing what the brain does -- how computers learn to listen 3New strategy for inhibiting virus replication 2Carnegie Mellon develops innovative method to detect genetic causes of complex diseases 2
(Date:2/26/2015)... Los Angeles, CA (PRWEB) February 26, 2015 ... organizing an online demonstration to support life extension technologies ... to 8pm UTC, Universal Coordinated Time, on March 21st ... around the world. , Eric Schulke, Founder of ... we must act with urgency. The Movement for Indefinite ...
(Date:2/26/2015)... BioEnterprise today announced that Northeast Ohio ... in growth funding during the past 13 years.  Funding ... – including the Ohio Third Frontier - and federal ... raised in the past five years. ... BioEnterprise Midwest Healthcare Growth Capital  Report.   ...
(Date:2/26/2015)... February 26, 2015 RURO, Inc., a ... FreezerPro® version 6.2 – the latest update to the ... is that of a quick and easy method to ... the latest version, RURO engineering has enhanced the system’s ... move large amounts of sample records. , "FreezerPro ...
(Date:2/26/2015)... Calif. , Feb. 26, 2015 ... Gold Partner status in Oracle PartnerNetwork. In attaining Gold ... its commitment to establish Oracle-related knowledge in delivering Ceres, ... challenges of joint customers. Originally developed for ... to rapidly zoom in and out of massive amounts ...
Breaking Biology Technology:Indefinite Life Extension Activists Organize Online Demonstration 2Indefinite Life Extension Activists Organize Online Demonstration 3More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 2More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 3More Than $2 Billion Invested in Northeast Ohio Bioscience Start-Up Companies Since 2002 4RURO Releases FreezerPro® version 6.2 2Ceres Becomes Oracle PartnerNetwork Gold Level Partner 2Ceres Becomes Oracle PartnerNetwork Gold Level Partner 3Ceres Becomes Oracle PartnerNetwork Gold Level Partner 4
... Oct. 25 Cellectis (Alternext: ALCLS), the French genome ... and Application (CiRA) of Kyoto University, Kyoto, Japan, have ... to combine Cellectis, genome engineering technologies with CiRA,s induced ... characteristics of iPS cells for use as cellular tools. ...
... Oct. 22 Trius Therapeutics, Inc. (Nasdaq: TSRX ... at Trius Therapeutics, will present "Innovative Antibacterial Drugs by Design; ... event taking place on October 26, 2010 from 5:30-9:30 p.m. ... available at http://sdbn.org/october . About ...
... Bacterin International Holdings, Inc. (OTC Bulletin Board: ... for medical applications and revolutionary bone graft material, today ... M. Wickwire, a distinguished Washington, D.C. based attorney and ... & Carparelli, to its Board of Directors.  Effective immediately, ...
Cached Biology Technology:Cellectis and the Center for iPS Cells Research and Application Enter Collaboration 2Cellectis and the Center for iPS Cells Research and Application Enter Collaboration 3Bacterin International Reconstitutes Its Board of Directors and Appoints Experienced Legal and Financial Professionals 2Bacterin International Reconstitutes Its Board of Directors and Appoints Experienced Legal and Financial Professionals 3Bacterin International Reconstitutes Its Board of Directors and Appoints Experienced Legal and Financial Professionals 4
... targets including proteins and to their modification ... antigens. A&Gs service is divided into ... 40 days (duration may vary slightly dependent ... I: Immunization, test bleed and fusion; $2,500 ...
... Clone/PAD: ZMD.368. Immunogen: Synthetic peptide ... the human WNT2B/WNT13 protein. Specificity: ... mouse and rat WNT2B/WNT13 proteins. Recognizes ... Reactivity: Mouse Human Rat (positive ...
... Immunogen: Synthetic peptide derived from ... protein (chromosome 17 open reading frame 37 ... for the C35 protein. On Western blots ... kDa band. Reactivity: Human (positive control: ...
...
Biology Products: