Navigation Links
Molecular barcodes - identification of 16 new species of Caenorhabditis
Date:11/20/2011

Caenorhabditis are usually thought of as soil nematodes, happily living in compost heaps. The famous (scientifically speaking) Caenorhabditis elegans has provided a wealth of information about developmental processes and cell death. These tiny worms have been at the forefront of three Nobel prizes and have even been sent into space! However all other known Caenorhabditis species are as distantly related to C. elegans as mouse is to man. New research published in BioMed Central's open access journal BMC Evolutionary Biology looked at the relationship between the ten known species of Caenorhabditis and found another 16. In the process it was discovered that these particular nematodes prefer to live in rotting fruit and vegetation rather than soil.

A team of researchers, led by Dr Karin Kiontke, from New York University, and Marie-Anne Flix, from the Institute Jacques Monod in Paris, delved into rotting vegetation collected from around the world. They found Caenorhabditis worms in samples from temperate and tropical climes across four continents, but only in those which contained rotting fruit or vegetable material. Some species, like C. elegans, were found in many locations, but others in only one.

'Worms' were separated according to physical characteristics such as color, tail length, and position of reproductive organs. True separation between species was determined by the animals being unable to mate or to produce viable offspring, and the species were molecular barcoded using the ITS2 regions of DNA.

Dr Kiontke explained, "Using our new data we were able to generate an evolutionary tree for all 26 species which showed that the history of Caenorhabditis has had many evolutionary reversals and convergences. For example, the spicules (the male reproductive organs) increased in length after the first species diverged from the Caenorhabditis ancestor, but decreased again in a more modern ancestor of five present-day species. Also, it is clear that hermaphroditism has evolved independently three times within the Caenorhabditis genus. The newly discovered species will be an important resource for future research and will doubtless teach us much more about the evolution of genomes, reproductive modes and development. Although we still have not yet found the elusive close relative for C. elegans we now know where to search."


'/>"/>
Contact: Dr HIlary Glover
hilary.glover@biomedcentral.com
44-020-319-22370
BioMed Central
Source:Eurekalert

Related biology news :

1. SNM releases new fact sheet on breast cancer and molecular imaging
2. Genetic Engineering & Biotechnology News reports on growing role of molecular diagnostics
3. A new journal where molecular biology meets clinical research
4. Scientists trace molecular origin of proportional development
5. New molecular insight into vertebrate brain development
6. Plants display molecular amnesia
7. Pitt, NETL researchers report molecular chain reaction thought to be impossible
8. Tracking the molecular pathway to mixed-lineage leukemia
9. Researchers compile molecular manual for 100s of inherited diseases
10. Biologists learn structure, mechanism of powerful molecular motor in virus
11. Phoenix conference highlights TGens and Scottsdale Healthcares contributions to molecular oncology
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/16/2017)... FRANCISCO , Feb. 16, 2017  Genos, ... today announced that it has received Laboratory Accreditation ... CAP Accreditation is presented to laboratories that meet ... who demonstrate scientifically rigorous processes. "Genos ... excellence in laboratory practices. We,re honored to be ...
(Date:2/13/2017)... , Feb. 13, 2017  RSA Conference -- RSA, ... that is designed to enhance fraud detection and ... in the RSA Fraud & Risk Intelligence Suite. ... to leverage additional insights from internal and external ... better protect their customers from targeted cybercrime attacks. ...
(Date:2/10/2017)... , Feb 10, 2017 Research ... report "Personalized Medicine - Scientific and Commercial Aspects" ... ... medicine. Diagnosis is integrated with therapy for selection of treatment ... early detection and prevention of disease in modern medicine. Biochip/microarray ...
Breaking Biology News(10 mins):
(Date:2/22/2017)... Linda, Ca (PRWEB) , ... February 22, 2017 ... ... virtual events for tech innovators, engineers, and scientists from around the world, is ... will place on February 22 and 23, 2017. This premier, online-only conference focused ...
(Date:2/22/2017)... Dublin - Research ... Crop Protection (Bio-Pesticide) Market-By Type, By Application, By End User, By ... offering. ... Biological Crop Protection Market is forecasted to grow at a CAGR ... biopesticide or biological crop protection market is driven by the surging ...
(Date:2/22/2017)... 2017 Aethlon Medical, Inc. (Nasdaq: ... that validated the ability of the Aethlon HemopurifierĀ® to ... mortality in immune-suppressed sepsis patients and also contribute to ... objective of the study was to validate the ... (EBV) and Herpes Simplex virus 1 (HSV1) by the ...
(Date:2/22/2017)... ... February 22, 2017 , ... Pharma ... Tom Perkins as European director. Operating from Pennsideā€™s Zurich headquarters, Pennside Partners, GmbH, ... Perkins joins Pennside after more than a decade with leading market research firm, ...
Breaking Biology Technology: