Navigation Links
Is this the beginning of the end of plant breeding?
Date:6/8/2009

plete copy of the chromosome. The double-chromatid chromosomes line up along the centre of the cell. In mitosis, the two chromatids are pulled apartthe X is divided along one axis of symmetryand these then pass into two genetically identical daughter cells. In meiosis, there are two lining up and dividing phases. The first lining up is of homologous chromosomesall chromosomes in an adult cell have a partner, members of the partnership coming from the mother and father of the celland these homologous chromosomes are each made up of two chromatids. The first division divides homologous pairs of chromosomes while the second meiotic division is just like the mitotic di vision: the chromosomes line up at the middle of the new cell and the chromatids divide at the centre of the X.

Thus the differences between mitosis and meiosis are that meiosis has two rounds of division; co-segregation of sister chromatids at the first division; and recombination that occurs during the first divisiona swapping over process that adds more genetic diversity to offspring. The new work, led by Raphael Mercier, identifies a gene that controls one of these three featuresentry into the second meiotic divisionin the sexual plant Arabidopsis thaliana. By combining a mutation in this gene with two other previously described mutationsone that eliminates recombination and another that modifies chromosome segregationthe authors have created a strain of plant (called MiMe for 'mitosis instead of meiosis') in which meiosis is totally replaced by mitosis.

MiMe plants produce pollen and eggs that are genetically identical to their parent. If MiMe eggs are self-fertilized by MiMe sperm, the offspring plant has twice as much DNA as the parent generation, and has all the genes from this single parent.

Thus the authors have made a form of asexual reproduction possible in a normally sexual species. Turning meiosis into mitosis is not enough to reach clonal reproduction, but it's
'/>"/>

Contact: Sally Hubbard
press@plos.org
Public Library of Science
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Worlds top minds to celebrate the birth and life of beginnings
2. Avian origins: new analysis confirms ancient beginnings
3. Beginning scientists receive presidential awards
4. REGiMMUNE presents enhanced efficacy data in preclinical transplantation models
5. NASA satellite detects red glow to map global ocean plant health
6. Scientists develop a new HIV microbicide -- and a way to mass produce it in plants
7. Understanding plants overactive immune system will help MU researchers build better crops
8. MSU discoveries upend traditional thinking about how plants make certain compounds
9. Plant Min protein sits tight and rescues E. coli
10. ISU researcher identifies genetic pathway responsible for much of plant growth
11. MIT’s implantable device offers continuous cancer monitoring
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/10/2014)... NEW YORK , June 27, 2014 /PRNewswire/ ... against Provectus Biopharmaceuticals, Inc. ("Provectus" or the "Company")(NYSE-MKT: ... action, filed in United States District Court, Middle ... Division, is on behalf of a class consisting ... otherwise acquired Provectus securities between December 17, 2013 ...
(Date:7/10/2014)... July 1, 2014 Smart technology emphasis ... convenience and improved security: NXT-ID, Inc. (OTCBB: NXTD), eBay Inc. ... GOOG ), Apple Inc. (NASDAQ: AAPL ), Visa ... MA) NXT-ID, Inc., (OTCQB: NXTD) a biometric authentication company ... that the second series of 30 second spots on CNBC ...
(Date:7/10/2014)... 2, 2014 It is a great honor ... appointment of the world-renowned Thoracic and Cardiovascular surgeon, Mark ... Dr. Ginsburg, with over 34 years of experience, ... and Good Samaritan Regional Medical Center. Dr. Ginsburg has ... 1980,s and is considered an expert in the implantation ...
Breaking Biology News(10 mins):SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 2SHAREHOLDER ALERT: Pomerantz Law Firm Announces the Filing of a Class Action against Provectus Biopharmaceuticals, Inc. and Certain Officers - PVCT 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 2Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 3Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 4Advantages for Digital Wallets Eliminate Need to Carry Credit Cards - Large Scale CNBC Ad Campaign for Latest Smart Wallet to Commence July 7th 5Avery Biomedical Devices, Inc. announces the appointment of Mark E Ginsburg, M.D. to its Board of Directors 2
... http://www.ptitime.com ), an established leader in manufacturing Time ... Generation II,an innovative biometric system that features a ... generation of Pyramid,s TimeTrax Bio was,released in January ... same,features as its predecessor with one-touch time and ...
... of "New Employee,Verification Act", ALEXANDRIA, Va., May ... resource management today led a coalition of,business leaders ... Act." In testimony today before the House Ways ... and CEO of SHRM,urged legislators to recognize that ...
... Chicago, Ill. May 6, 2008 A recent study ... dramatically between 1990 and 2005, but that they continue to ... products contributes nearly one-third of total mercury emissions to the ... into the relative magnitudes of the different sources of mercury ...
Cached Biology News:Pyramid Launches TimeTrax Bio Generation II 2SHRM CEO Testifies Before House Subcommittee on Social Security 2SHRM CEO Testifies Before House Subcommittee on Social Security 3Study shows mercury levels from products decreasing, though still at dangerous levels 2
(Date:7/10/2014)... (PRWEB) July 10, 2014 Unraveling life’s ... together. The Archer Family purchased a DNA ... DNA, but ended up with a lifetime of memories, ... within the family members’ DNA genuinely brought the family ... to search deeper into genetic history and prior to ...
(Date:7/10/2014)... 10, 2014 EvoDerma ’s NOOME Anti-Aging ... rejuvenating device now comes with a second treatment cup to ... , The new cup is thinner on the edges for ... target rough, thin and uneven surfaces on the face, neck ... a stimulating treatment on areas such as the cheeks and ...
(Date:7/10/2014)... PETERSBURG, Russia , July 10, 2014 ... Russian Federation Dmitry Medvedev , presented ... biopharmaceutical company BIOCAD . The Company is developing ... scope of MabNext project BIOCAD develops a number of ... cancer and autoimmune diseases. The ceremony took place at ...
(Date:7/10/2014)... July 10, 2014 Research and Markets ... the "International Photonic Integrated Circuit (Monolithic Integration, ... 2019" report to their offering. ... concept of photonic integration traces its roots in ... promise of photonic integration went unexplored and unfulfilled ...
Breaking Biology Technology:Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 2Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 3Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 4Ancestry DNA Test Reveals a Controversial and Undiscovered Family History 5Introducing a New Bonus Treatment Cup for EvoDerma’s NOOME Anti-Aging Motion 2Dmitry Medvedev Presented BIOCAD the First National "Industry" Award 2International Photonic Integrated Circuit (Monolithic Integration, Hybrid Integration, Module Integration) Market - Forecasts to 2019 2
... tracking are not quite here yet. But Pete Abell ... has a few words to say about when they might ... UW E-Business Institute held June 17 near Waukesha, he told ... RFID tracking as early as next year so they would ...
... disadvantages and implementation advice offered , ,Waukesha, Wis. ... open market, it seldom begins its life as an instant ... or impractical contraption that is waiting for early adopters, who ... must be studied by those experienced in the field, tested ...
... Third CATI company in 12 months , ,STURTEVANT, ... technology licensed from the Center for Advanced Technology ... a license agreement with CATI on its flexible, raised-pavement ... Bates. , ,Raised pavement markers are installed on most ...
Cached Biology Technology:RFID: a 30-year project 2Laying the foundation for RFID 2Laying the foundation for RFID 3Laying the foundation for RFID 4
Convenient 10X buffer concentrate used to maximize binding to the solid phase in microwell ELISA. Formulated to provide optimal pH and ionic strength for binding of antibodies and some antigens. Co...
A trigger solution for Flashlight labeled materials....
... The MiniOpticon 2-color real-time PCR detection system holds 48 ... array of 48 LEDs independently excites fluorescence (470-500 nm) ... detects emitted light (523-543 nm and 540-700 nm). This ... MJ Mini thermal cycler. System dimensions are 18 x ...
... novel procedure for the uniform amplification and ... DNA from small samples. This method has ... highly reproducible amplification and labeling procedure for ... Mini Kit module (QIAGEN) and a ULS ...
Biology Products: