Navigation Links
Dine or dash? Genes help decide when to look for new food
Date:3/16/2011

For worms, choosing when to search for a new dinner spot depends on many factors, both internal and external: how hungry they are, for example, how much oxygen is in the air, and how many other worms are around. A new study demonstrates this all-important decision is also influenced by the worm's genetic make-up.

In the simple Caenorhabditis elegans nematode, the researchers found that natural variations in several genes influence how quickly a worm will leave a lawn of bacteria on which it's feeding. One of the genes, called tyra-3, produces a receptor activated by adrenalinea chemical messenger involved in the 'fight-or-flight' response. The findings appeared online March 16, 2011, in the journal Nature.

"What's encouraging to us about this story is that molecules related to adrenaline are implicated in arousal systems and in decision-making across a lot of different animals, including humans," says Howard Hughes Medical Institute investigator Cornelia Bargmann of Rockefeller University in New York, who mentored the work of graduate student Andres Bendesky. These parallels between diverse species suggest that aspects of our decision-making abilities have ancient evolutionary roots.

Six worms on a small lawn of bacterial food (circle). Occasionally, a worm leaves the food to explore the surrounding environment. Video: Bendesky et al. Nature

C. elegans thrive in agricultural settings, such as orchards and crop lands, feeding on bacteria from rotting fruits and vegetables. But eating in this environment is tricky: the worms encounter many bacterial species that are difficult to digest or even toxic. "The worms need to somehow evaluate a whole spectrum of conditions to decide whether they want to try this food source or go out and look for a better one," Bargmann says.

The great scientific advantage of using C. elegans to study complicated behavioral processes such as decision-making is that the w
'/>"/>

Contact: Jim Keeley
keeleyj@hhmi.org
301-215-8858
Howard Hughes Medical Institute
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Study shows how plants sort and eliminate genes over millennia
2. An Israel prize in his genes
3. Suggesting genes friends, Facebook-style
4. David and Goliath viruses shed light on the origin of jumping genes: UBC study
5. Better brain wiring linked to family genes
6. University of Maryland School of Medicine study identifies genes associated with binge drinking
7. U. Iowa team investigates function of junk DNA in human genes
8. Just like cars, developmental genes have more than 1 way to stop
9. Good diets fight bad Alzheimers genes
10. Partnership of genes affects the brains development
11. The most genes in an animal? Tiny crustacean holds the record
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/23/2015)... GARDENS, Fla. , June 23, 2015 ... identity management and authentication solutions, today announced enhanced ... strong, multi-factor authentication solution.  The enhancements build ... use of the DigitalPersona Altus platform and ... reader compatibility. In today,s environment ...
(Date:6/17/2015)... GERMANTOWN, Maryland , June 17, 2015 ...   Produktlinie mit DNA-Tests verbessert den Analyseprozess und ... QGEN ; Frankfurt Prime Standard: QIA) hat heute in ... Produktlinie Investigator ® für ... Die neuen Kits zur Erstellung genetischer Fingerabdrücke bieten eine ...
(Date:6/17/2015)... , June 17, 2015  Crossmatch™, a leading ... that its U.are.U ® 4500 fingerprint readers ... Eateries, Inc., a San Jose, ... to increase security, improve accountability and reduce fraud ... instant, non-repudiable identity confirmation for employee sign in ...
Breaking Biology News(10 mins):Crossmatch Releases Enhanced DigitalPersona Altus Advanced Authentication Functionality 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 2QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 3QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 4QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 5QIAGEN bringt in den USA neue Kits für die forensische DNA-Analyse auf den Markt 6Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 2Togo's Eateries Improve Security and Accountability with Crossmatch Fingerprint Readers 3
... ARBOR, Mich. An early laboratory success is taking ... gland transplants that could one day prevent a currently ... The scientists were able to induce embryonic stem ... hormone essential to maintaining bone density. The laboratory results ...
... ANN ARBOR, Mich.---Brain implants that can more clearly record ... at the University of Michigan. The findings could eventually ... as Parkinson,s disease and paralysis. Neural electrodes must ... When the electrodes are implanted, the brain first reacts ...
... calling on Congress to support the Consistency, Accuracy, Responsibility ... (CARE bill), which would ensure that states set minimum ... bill (H.R. 3652) was introduced Sept. 28 in the ... "The introduction of the CARE bill ...
Cached Biology News:Stem cell success points to way to regenerate parathyroid glands 2A step toward better brain implants using conducting polymer nanotubes 2A step toward better brain implants using conducting polymer nanotubes 3SNM urges Congress to support CARE bill 2
(Date:6/29/2015)... (PRWEB) , ... June 29, 2015 , ... ... 7736892 B2. Under the terms of the agreement, MediVet will acquire the rights ... Cells (UCMSCs). MB-007 is currently in pre-clinical development as a potential next-generation treatment ...
(Date:6/29/2015)... , June 29, 2015  AACC, a global ... health through laboratory medicine, is pleased to announce ... Clinical Chemistry , has increased to 7.9 in ... increase places Clinical Chemistry in the ... the significant influence of the research it publishes ...
(Date:6/29/2015)... DALLAS , June 29, 2015 ... Type (DNA, RNA, XNA), by Application (Diagnostics, Therapeutics, R&D), by ... Biotechnology & Pharmaceutical Companies, CRO) - Global Forecast to 2020", ... reach $244.93 Million by 2020 from $107.56 Million in 2015, ... market T ables and 67 F ...
(Date:6/29/2015)... YORK , June 29, 2015   For the ... life sciences to assess their overall digital maturity called ... show that these companies are not maturing fast enough. ... healthcare industry in numerous ways overall and customers are ... in terms of digital customer engagement.  ...
Breaking Biology Technology:MediVet Biologics Acquires Exclusive Patent License from Kansas State University 2MediVet Biologics Acquires Exclusive Patent License from Kansas State University 3AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 2AACC's Journal, Clinical Chemistry, Continues to Have Significant Impact on Medical Testing, Healthcare 3Aptamers Market Worth $244.93 Million by 2020 2Aptamers Market Worth $244.93 Million by 2020 3Aptamers Market Worth $244.93 Million by 2020 4Results from Digital Maturity Study Show Pharma Lagging 2Results from Digital Maturity Study Show Pharma Lagging 3Results from Digital Maturity Study Show Pharma Lagging 4
... Multiporator / Electroporator 2510 , , , , , , , ... Protocol No. 4308 915.521 02/2002 , , , ... , Microorganism , ... Cell type , Bacteria, gram positive, , ...
... , , , , Multiporator / Electroporator 2510 , , , ... Transformation Protocol , Protocol No. 4308 915.514 04/2002 , ... , , , , ... , Cell type , Bacteria, ...
... , , , , Multiporator / Electroporator 2510 , , , ... Transformation Protocol , Protocol No. 4308 915.511 04/2002 , ... , , , , ... , Cell type , Bacteria, gram ...
Cached Biology Technology:Mycobacterium intracellulare 2Escherichia coli K12 2Escherichia coli K12 3Escherichia coli C600 2Escherichia coli C600 3
Mouse monoclonal antibody raised against a partial recombinant STAU2. NCBI Entrez Gene ID = STAU2...
...
Mouse polyclonal antibody to NR2F2 - nuclear receptor subfamily 2, group F, member 2...
... Pack provides optimized blocking and wash ... Clarifier: Ready-to-use wash solutions have been ... Coated Slides for Microarrays (Product Code ... Buffer: 1L • Microarray Post Hybridization ...
Biology Products: