Navigation Links
No sex, but plenty of gene transfer
Date:5/29/2008

MBL, WOODS HOLE, MA Where do you get your genes?

If you are an animal, you inherit them from your parents at the moment of conception, and that's about it. No later incorporation of environmental DNA for you, unless you become host to a parasite or an endosymbiont that somehow transfers bits of its genome into yours (which is a rarely documented event).

Unless you are a bdelloid rotifer, that is.

This odd, microscopic, freshwater animal is making news once again, this time for the startling discovery of numerous chunks of foreign DNA in its genome. In a paper published this week in Science, evidence for massive horizontal gene transferfrom bacteria, fungi, even from plantsinto the bdelloid rotifer genome is presented by Irina Arkhipova and Matthew Meselson, scientists at the MBL's Josephine Bay Paul Center and at Harvard University, and Harvard graduate student Eugene Gladyshev.

While horizontal gene transfer is common in bacterial species, it was unheard of in the animal kingdom on such a massive scale until this study.

"It is quite amazing that bdelloids are able to recruit foreign genes, which were acquired from remarkably diverse sources, to function in the new host," says Arkhipova. "Bdelloids may have the capacity for tapping into the entire environmental gene pool, which may be of (evolutionarily) adaptive significance during expansion into new ecological niches, and may even contribute to bdelloid speciation," she says.

This finding may help to explain why bdelloids, which are exclusively asexual, have managed to diversify into more than 360 species over 40 million years of evolution. Sometimes called an "evolutionary scandal," bdelloids contradict the notion that sex which recombines the DNA from the parents in their offspringconfers diversity and greater adaptability on a population, thereby boosting its evolutionary success. Arkhipova's study suggests that if bdelloids can incorporate for
'/>"/>

Contact: Diana Kenney
dkenney@mbl.edu
508-289-7139
Marine Biological Laboratory
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. In-vitro fertilization improved with 3-D/4-D-guided embryo transfer and new placement target
2. Silex Introduces Worlds First Wireless USB Device Server With Streaming Video and Audio Data Transfer
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
No sex, but plenty of gene transfer
(Date:9/15/2014)... are produced naturally across all kingdoms of life and ... broad range of biological activities. The presence of halogen ... on their molecular properties. , One of ... find the late-stage, site-specific incorporation of a halogen atom ... C-H bond (one of the most inert chemical bonds ...
(Date:9/15/2014)... A new strategic vision document, released today ... Program, describes the long-term goals, objectives, and strategies ... of work over the next five years (2015-2020). ... initial, short-term activities, to be funded in 2015, ... science policy fellowships. , The $500 million, ...
(Date:9/15/2014)... cognitive function may play roles in one,s musical aptitude, ... timbre, tone durations, and formal structure in music. , ... that extremes in musical aptitude (extreme capacity/no capacity) are ... having moderate aptitude. , "This is a typical feature ... and it is influenced to varying degrees by environmental ...
Breaking Biology News(10 mins):Pitt chemical biologist finds new halogenation enzyme 2NAS Gulf Research Program announces strategic vision, initial opportunities 2NAS Gulf Research Program announces strategic vision, initial opportunities 3NAS Gulf Research Program announces strategic vision, initial opportunities 4
... growing asthma rates among children with exposure to ... study in the May issue of Journal ... Levels in North Carolina Schools: Comparison of Integrated ... using integrated pest management (IPM) to control cockroaches ...
... has implicated machinery that maintains the flow of potassium in ... Expression of a previously unknown form of a key such ... normal in the brain memory hub of people with the ... variation. An extensive series of experiments suggest that ...
... May 5, 2009 Researchers at the Hebrew University ... the tumor-risk factor in utilizing human embryonic stem cells. ... the promising field of stem cell therapy. ... to all cells of the mature human body (and ...
Cached Biology News:Flow of potassium into cells implicated in schizophrenia 2Flow of potassium into cells implicated in schizophrenia 3Hebrew University researchers neutralize tumor growth in embryonic stem cell therapy 2
(Date:9/12/2014)... 2014 Research and Markets has ... Photoresist Industry Report 2014" report to their offering. ... Report 2014 is a professional and in-depth study on ... industry . The report provides a basic ... industry chain structure. The dry film photoresist market analysis ...
(Date:9/12/2014)... NM (PRWEB) September 12, 2014 Sandia ... an exclusive option agreement with STC.UNM (STC) for a ... Mexico (UNM) in Albuquerque, New Mexico, and Queen Mary ... of technologies, called the Recombinant Fluorescent Antibody Technology Platform ... Department of Internal Medicine and Dr. Angray Kang from ...
(Date:9/11/2014)... it has uncovered the secret behind the unusual ... metal dichalcogenide (TMDC) materials, the two-dimensional semiconductors that ... , Using two-photon excitation spectroscopy, the researchers ... most promising of 2D materials, and found evidence ... energy states in which single photons can be ...
(Date:9/11/2014)... a research paper published this week in Science ... Levitov and Manchester,s Nobel laureate Sir Andre Geim report ... angle to applied fields, similar to sailboats driven diagonally ... one atom-thick chicken wire made from carbon but ... so-called superlattice state by placing it on top of ...
Breaking Biology Technology:Global Dry Film Photoresist Industry Report 2014 2Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 2Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 3Sandia Biotech and STC.UNM Announce Option Agreement to License Novel Recombinant Antibody Technology 4Excitonic dark states shed light on TMDC atomic layers 2Excitonic dark states shed light on TMDC atomic layers 3New species of electrons can lead to better computing 2
... privately held,medical device firm, announced that it has successfully ... Crux IVC Filter. The filter, used to,prevent an often ... Center by David Rosenthal, Chief of Vascular Surgery. Every,year ... PE and,between 120,000 - 150,000 die as a result. ...
... Influenza ... Testing, ... company developing rapid molecular diagnostics and detection,systems, announces a EUR3 million ... The award will fund the,development and validation of a fully automated, ...
... More Than Doubles Assets Under Management, UTRECHT, The ... European venture capital firm, today announced,the closing of its ... II (GHC II). The new fund, which is Gilde,s ... raised to invest in European,healthcare opportunities. GHC II was ...
Cached Biology Technology:Crux Biomedical Announces First Successful U.S. Implant of Its New Retrievable Inferior Vena Cava (IVC) Filter 2Enigma Diagnostics Announces a European Commission Award of EUR3 Million to Fund the Development of a Point of Care Platform for the Rapid Diagnosis of Influenza Infections 2Gilde Healthcare Partners Closes EUR 150 Million European Healthcare Venture Fund 2
... benchtop fume hood ventilates and ... indoor release of exhaust. Bonded ... contaminants. Configurations are available with ... include final HEPA filter, work ...
... modular cleanroom for biological safety labs ... cleanliness (to Class 10/ISO 3) and ... create ultra-smooth surfaces that are easy ... radius corners simplify cleaning. Unique double-wall ...
... new Hummingbird has the ability to quickly and ... makes it a perfect candidate for inclusion in ... OCX interface supplied with all the Cartesian products ... Hummingbirds ability to copy plates in seconds ...
This modular benchtop fume hood ventilates and purifies chemical fumes, allowing safe indoor release of exhaust. Bonded charcoal filters remove most organic contaminants. Options include final HEPA f...
Biology Products: