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

are necessary for cycling, she says, since squid grown without their bacterial symbionts do not cycle their expression of escry1, and mimicking the bacterial light with a blue light did not induce the cycling.

And they showed that the light is also necessary, because squids grown with defective V. fischeri symbionts that lack the ability to luminesce didn't cycle their expression of escry1 either. With light-defective bacteria in their light organs, squids exposed to the blue light got back on track, cycling escry1 production as usual.

What is it about the bacteria that could be signaling to the squid? Long experience taught McFall-Ngai where to turn next: microbe-associated molecular patterns (MAMPs), molecules that signal the presence of microbes to other creatures. "In this system we have found again and again that bacterial surface molecules are active at inducing all kinds of cellular behavior in the host," says McFall-Ngai.

Her hunch was right. MAMPs plus light turned cycling on. In squid grown without symbionts, light, combined with MAMPs (either the lipid A component of lipopolysaccharide or the peptidoglycan monomer), could induce some degree of cycling. The squid did not respond fully, though, maybe because the MAMPs were only injected into their seawater habitat, not presented directly to the light organ.

The fact that a bacterium can control a daily rhythm in a squid is exciting for other areas of biology, says McFall-Ngai, because all animals, including humans, have clock genes like escry1.

"Recently, in two different studies, biologists have found that there is profound circadian rhythm in both the epithelium [of the human gut] and the mucosal immune system of the gut that is controlled by these clock genes. What are we missing? Are the bacteria affected by or inducing the cycling of the tissues with which they associate?" We don't know," says McFall-Ngai, but it's an area ripe for study.


'/>"/>
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:12/22/2014)... 2014  The 2014 Holiday Season may be the brightest ... reports that the long anticipated floodgates for consumer biometrics ... for smart phones, tablets, and wearable mobile devices that ... billion users with nearly 4.8 billion biometric devices by ...
(Date:12/17/2014)... 15, 2014 Research and Markets ( http://www.researchandmarkets.com/research/s6qzt5/samsung_galaxy_s5 ... Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology ... http://photos.prnewswire.com/prnh/20130307/600769 Based on a ... introduces for the first time a fingerprint sensor in ...
(Date:12/17/2014)... fundamentally transforming the travel experience and nowhere is this ... decade, ePassports, biometric readers, and secure document scanners have ... via eGates and Automated Passport Control (APC) Kiosks at ... across the globe. According to ...
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 2Samsung Galaxy S5 - Home Button Synaptics Fingerprint Sensor Technology Analysis 2Automated Border Control (ABC) Transforms the Global Travel Experience With More Than 2500 ABC eGates and APC Kiosks Deployed In Airports, Seaports, and Land Borders Worldwide 2
... Institute have developed a new method for studying the complex ... less studied spreader of human malaria. An. albimanus ... in humans in South America and regions outside of Africa. ... An. albimanus mosquito has not been sequenced and since ...
... will take on the challenge of providing the first insights ... will work with scientists from the John Innes Centre on ... the Royal Society and 2000 from the British Society for ... reduce losses to Take-all, one of the most serious fungal ...
... model suggests that inhospitable hydrodgen-sulphide rich waters could have ... oceans. The research, published online this week in the ... the oceans 550-700 million years ago and shows that ... of complex life, were controlled by the biological availability ...
Cached Biology News:New method for researching understudied malaria-spreading mosquitoes 2Growing talent -- schools to provide vital knowledge for food security 2Toxic oceans may have delayed spread of complex life 2
(Date:1/23/2015)... BioPharma Inc. (NASDAQ: ARRY ) today announced ... Pharma AG to acquire worldwide rights to encorafenib (LGX818), ... agreement is conditional on the closing of transactions announced by ... are expected to close in the first half of ...
(Date:1/22/2015)... BOSTON , Jan. 22, 2015  Transwestern | RBJ today ... feet of office space for Shire a leading biopharmaceutical company, ... . Transwestern | RBJ,s Robert Richards , president, and ... the lease for the entire five-floor building at 95 Hayden ...
(Date:1/22/2015)... (PRWEB) January 22, 2015 The laboratory ... that has witnessed a number of technological advancements due ... regulatory requirements, growing need to integrate healthcare systems, and ... ease challenges in system integration. Key players in the ...
(Date:1/22/2015)... 2015 zFlo Motion , a US ... an exciting product from a new partner. STT-Systems ... the past 15 years, with offerings in the optical-motion capture, ... IMU system (inertial measurement unit), iSen, is opening eyes around ...
Breaking Biology Technology:Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 2Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 3Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 4Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 5Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 6Array Announces Agreement To Acquire ENCORAFENIB (LGX818) 7Transwestern | RBJ Advises Shire in 202,000 SF Lease, Creating Boston's Largest Suburban Biotech Campus 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 2Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 3Laboratory Information Management Systems Market is Expected to Reach $1,323.6 Million by 2019 - New Research Report by MarketsandMarkets 43D Motion Capture Just Got Easy 2
... Chang-Hwan Choi of the Department of Mechanical Engineering at ... of the 2010 Young Investigator Program (YIP) award by ... academic scientists and engineers who show exceptional promise for ... of young outstanding scientists and engineers," said ONR,s Director ...
... ShowPatrol ... the specific requirements and challenges of the search industry. , ... Cheshire, CT (PRWEB) April 8, 2010 -- ShowPatrol will ... ShowPatrol is responsible for all sales and marketing of the CardBrowser service to search firms ...
... ... and experience in the life sciences industry and academia to the pioneering life sciences ... ... sciences tool company which introduced the world,s first 3D biosensor surface for label-free biomolecular ...
Cached Biology Technology:Dr. Chang-Hwan Choi honored with prestigious Young Investigator Award 2Dr. Chang-Hwan Choi honored with prestigious Young Investigator Award 3Danny Cahill announces new company ShowPatrol has partnered with CardBrowser 2Silicon Kinetics Announces Addition of Dr. Rick Brown and Dr. Eric Topol to Its Board of Directors 2Silicon Kinetics Announces Addition of Dr. Rick Brown and Dr. Eric Topol to Its Board of Directors 3
Porcine Aortic Endothelial Cells (PAOEC) (>500,000 cells)...
alpha-N-Catenin Antibody Shipping Temperature: HOT Storage Temperature: -20C...
... Mouse monoclonal [E12] to MAP1 Light Chain ... mediate the physical interactions between microtubules and components ... of a heavy chain subunit and multiple light ... is one of the light chain subunits and ...
... as smooth muscle cell specific protein, is reported ... tissues such as intestine, lung and uterus. It ... SM22 alpha expression has been reported in most ... and visceral forms. It is also reported to ...
Biology Products: