Navigation Links
Avoiding poisons: A matter of bitter taste
Date:11/18/2013

In most animals, taste has evolved to avoid all things bitter---a key to survival--- to avoid eating something that could be poisonous via taste receptors, known as Tas2r, that quickly spring into action and elicit the bitter sensation.

Published recently in the online early edition of Molecular Biology and Evolution, authors Zhang, et. al., tested the hypothesis that herbivores---and their plant diets---have evolved to have greater number of Tas2r bitter taste receptor genes in their genomes than omnivores or carnivores. They identified Tas2r genes in more than 54 vertebrate species including mammals, birds, reptiles, amphibians, and fishes, and grouped them into functional and non-functional genes. They also constructed evolutionary trees and estimated the loss and birth of Tas2r genes. Finally, they correlated the Tas2r gene repertoire of the species with their diets.

Their analyses supported the hypothesis, showing vertebrates can also be classified as herbivores, carnivores, or omnivores based on their Tas2r genetic profile. The Tas2r gene number in a species also is correlated with the fraction of plants in its diet. They conclude that because plant tissues contain more toxic compounds than animal tissues do, dietary toxins are a major selective force shaping the diversity of the Tas2r genetic repertoire.


'/>"/>

Contact: Joe Caspermeyer
MBEpress@gmail.com
480-258-8972
Molecular Biology and Evolution (Oxford University Press)
Source:Eurekalert

Page: 1

Related biology news :

1. Avoiding a cartography catastrophe
2. Avoiding virus dangers in domesticating wild plants for biofuel use
3. Ultracold matter technology from CU and SRI International licensed to Boulders ColdQuanta
4. Size matters: Large Marine Protected Areas work for dolphins
5. A matter of priorities
6. Theres more star-stuff out there but its not dark matter
7. Want bigger plants? Get to the root of the matter
8. No matter the drilling method, natural gas is a much-needed tool to battle global warming
9. US-Russian collaboration develops new method for sequencing dark matter of life from a single cell
10. Black belts white matter shows how a powerful punch comes from the brain
11. For the rooster, size matters
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/16/2017)... , May 16, 2017   Bridge ... health organizations, and MD EMR Systems , ... development partner for GE, have established a partnership ... Portal product and the GE Centricity™ products, including ... EMR. These new integrations will ...
(Date:4/19/2017)... The global military biometrics market ... by the presence of several large global players. The ... major players - 3M Cogent, NEC Corporation, M2SYS Technology, ... 61% of the global military biometric market in 2016. ... military biometrics market boast global presence, which has catapulted ...
(Date:4/13/2017)... MONICA, Calif. , April 13, 2017 ... New York will feature emerging and evolving ... Summits. Both Innovation Summits will run alongside the expo ... of speaker sessions, panels and demonstrations focused on trending ... coast,s largest advanced design and manufacturing event will take ...
Breaking Biology News(10 mins):
(Date:6/26/2017)... ... June 26, 2017 , ... Two new members were elected to ... June 9, 2017: Jeremy Nowak, President, J Nowak Strategy and Michele Masucci, Ph.D., Vice ... election of Glen N. Gaulton and Kenneth L. Kring, and re-election of David P. ...
(Date:6/23/2017)... Muncie, IN (PRWEB) , ... June 23, 2017 ... ... leading voice for model aircraft flying hobbyists, and the University Aviation Association (UAA), ... for college students. The UAS4STEM Collegiate Challenge will encourage teamwork, competition, and success ...
(Date:6/22/2017)... (PRWEB) , ... June 22, 2017 , ... ... health leaders in designating infertility as a disease, bringing new hope for prospective ... at their 2017 annual meeting to back the World Health Organization’s designation in ...
(Date:6/22/2017)... ... June 22, 2017 , ... Charm Sciences, Inc. is pleased to announce ... determined to be appropriate as a screening test at dairies and farms for raw ... system, and the Charm EZ Lite system. These systems are a combination incubator and ...
Breaking Biology Technology: