Navigation Links
Mitochondrial genes move to the nucleus -- but it's not for the sex

Why mitochondrial genes ditch their cushy haploid environs to take up residence in a large and chaotic nucleus has long stumped evolutionary biologists, but Indiana University Bloomington scientists report in this week's Science that they've uncovered an important clue in flowering plants.

"Plants that reproduce clonally or are capable of self-pollinating have transferred more genes from the mitochondrion to the nucleus," said graduate student Yaniv Brandvain, lead author of the paper.

That discovery, Brandvain explained, is unexpected. The most obvious benefit of being part of the nuclear genome is recombination, after all, but little recombination takes place in self-pollinating species. So what, exactly, might be luring mitochondrial genes to the nucleus?

"We're not quite sure why yet, but we've hypothesized that successful mitochondrial genes are pairing up with related nuclear genes," Brandvain said. "When you have two successful genes that depend on each other, it's best for them not to be in an environment in which they will recombine. It would be like breaking up a good musical duo."

Mitochondrial and nuclear genomes replicate separately, and a new and beneficial mutation in the mitochondrion could be separated from partner genes in the nucleus -- in the production of eggs or pollen, via meiosis. But the mating system determines whether or not this separation is permanent. With self-pollination, the components separated by meiosis are brought back together. In contrast, the components are further separated if they mix and match haphazardly during out-crossing.

Brandvain said the finding contradicts the expectation that mitochondrial genes migrate to the nucleus because of the evolutionary benefits conferred by sexual recombination. "The benefits of sex could have driven the transfer," he said. "There are powerful arguments out there for that. But that's just not what we saw."

Brandvain, fellow gr
'"/>

Source:Indiana University


Page: 1 2

Related biology news :

1. Mitochondrial DNA mutations play significant role in prostate cancer
2. Mitochondrial DNA sequencing tool updated
3. Newly-discovered class of genes determines ?and restricts ?stem cell fate
4. Inexpensive, mass-produced genes core of synthetic biology advances at UH
5. First atlas of key brain genes could speed research on cancer, neurological diseases
6. U-M scientists find genes that control growth of common skin cancer
7. Researchers find missing genes of ancient organism
8. Scientists document complex genomic events leading to the birth of new genes
9. Genrate: a generative model that finds and scores new genes and exons in genomic microarray data
10. Advances in the characterisation of the oyster mushroom genes
11. Researchers find new genes necessary to make embryo
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Mitochondrial genes move the nucleus but not for the sex

(Date:1/22/2015)... DUBLIN , Jan. 22, 2015 Research and ... the addition of the "Global Wearable Technologies ... Growth, Share, Overview, Trends and Forecast 2014-2020" ... Wearable Technologies are smart devices that can be ...
(Date:12/24/2014)... , Dec. 23, 2014  Since its launch in December 2014, ... to eliminate the pain of trying to remember their usernames ... biometrics fused to their smartphones. To assist people who have ... the company that created 1U and focuses on redefining identity, ...
(Date:12/22/2014)... Dec. 22, 2014  The 2014 Holiday Season may be ... Market Intelligence reports that the long anticipated floodgates for ... intensifying demand for smart phones, tablets, and wearable mobile ... of 2.5 billion users with nearly 4.8 billion biometric ...
Breaking Biology News(10 mins):Global Wearable Technologies Market and Applications, Opportunities, Industry Analysis, Segmentation, Size, Growth, Share, Overview, Trends and Forecast 2014-2020 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 21U Offers Best Solution to the Username / Password Dilemma: For FREE! 3First 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 2
... pluripotent stem cells were first derived in 2007, scientists have ... which are sourced in early-stage embryos. Both cell types ... body, but their origins in embryonic and adult tissue ... cell types have great potential in basic biological research and ...
... (Sept. 11, 2011) Richard Holbrooke, John Ritter, Lucille ... were all taken by the same silent killer: an ... at The University of Texas Health Science Center at ... found an association with a common genetic variant in ...
... University of Iowa researchers have found high levels of toxic ... Harbor and Ship Canal (IHSC) in East Chicago, Ind. Scientists ... is scheduled to be dredged in spring 2012 to maintain ... of southern Lake Michigan. The study, published online in ...
Cached Biology News:Study reveals critical similarity between two types of do-it-all stem cells 2Study reveals critical similarity between two types of do-it-all stem cells 3UTHealth, BCM researchers find common gene variant associated with aortic dissection 2UTHealth, BCM researchers find common gene variant associated with aortic dissection 3Researchers find high levels of toxic PCBs in Indiana Harbor and Ship Canal 2Researchers find high levels of toxic PCBs in Indiana Harbor and Ship Canal 3
(Date:1/22/2015)... zFlo Motion , a US leader in biomechanics software ... a new partner. STT-Systems has developed an impressive ... with offerings in the optical-motion capture, 3D scanning, and industrial ... unit), iSen, is opening eyes around the world. With no ...
(Date:1/22/2015)... NJ (PRWEB) January 22, 2015 ... technologies such as the Bioruptor® and complete solutions ... system for chromatin immunoprecipitation, alleviating the need for ... and controls needed for ChIP of histones or ...
(Date:1/22/2015)... Mass. , Jan. 22, 2015   GenoSpace , a ... of tools to enable the broad use of genomic, imaging ... announced the appointment of Michelle Munson , CEO of ... director. Logo - http://photos.prnewswire.com/prnh/20150122/170713 ...
(Date:12/24/2014)... NEW YORK , Dec. 24, 2014 ... patient care in critical areas, announced the closing of an ... warrants to purchase up to an aggregate 3,500,000 shares of ... and $.01 per warrant.  The warrants have a per share ...
Breaking Biology Technology:3D Motion Capture Just Got Easy 2Diagenode Launches Unique Semi-Automated Solution for Chromatin Immunoprecipitation 2GenoSpace Expands Board with Appointment of Michelle Munson 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 2PlasmaTech Biopharmaceuticals, Inc. Announces Closing of Public Offering 3
... California, September 21, ChemAxon, a software solutions provider ... ) today announced an,agreement to maintain the integration ... software suite. Agilent acquired,the Kalabie ELN from Klee ... Klee and ChemAxon to Agilent and ChemAxon. ...
... catheter-related infections, REDMOND, Wash., Sept. 20 ... to enhance the biocompatibility and,performance of current ... deal with Strategic Applications Inc. (SAI), a ... infusion devices.,Healionics, deal with SAI will fully ...
... SAN DIEGO, Sept. 20 Cadence Pharmaceuticals,Inc. (Nasdaq: ... in-licensing,developing and commercializing proprietary product candidates principally,for use ... company,s,President and CEO Theodore Schroeder will present the ... am Eastern Time (8:30 am Pacific,Time) during the ...
Cached Biology Technology:ChemAxon and Agilent Technologies Sign Agreement Extending JChem Integration With Kalabie Electronic Lab Notebook 2Healionics Corporation Announces Partnership to Develop and Distribute STARcuff(TM) 2Cadence Pharmaceuticals' CEO Theodore Schroeder to Present at UBS 2007 Global Life Sciences Conference 2
... is a trademark of Merck KGaA. Physical form: Solution ... 8.0, 2 mM MgCl 2 , and 20 mM ... herring sperm DNA to acid-soluble oligonucleotides equivalent to a ... pH 8.0 at 37 C (reaction volume 2.625 ml). ...
... StabilCoat Immunoassay Stabilizer is an aqueous solution ... other non-toxic chemicals in a PBS buffer ... This product does not contain a ... conformation and activity of dried protein components ...
... NOBLE BSA-Free Stabilizer is a bovine ... It is an aqueous solution ... a MOPS buffer (3-(N-Morpholino) propanesulfonic acid), ... a combination of 0.02% methylisothiazolone and ...
Mouse monoclonal antibody to PARK2 - Parkinson disease (autosomal recessive, juvenile) 2, parkin...
Biology Products: