HOME >> BIOLOGY >> NEWS
Scientists find first active 'jumping genes' in rice

ARLINGTON, Va. -- University of Georgia researchers studying rice genomes under a National Science Foundation Plant Genome Research Program award have identified the species' first active DNA transposons, or "jumping genes."

The research is published in the Jan. 9 edition of the journal Nature.

In collaboration with researchers from Cornell, Washington University and Japan, geneticist Susan Wessler also discovered the first active "miniature inverted-repeat transposable element," or "MITE," of any organism.

Rice (Oryza sativa), an important food crop worldwide, has the smallest genome size of all cereals at 430 million base pairs of DNA. About 40 percent of the rice genome comprises repetitive DNA that does not code for proteins and thus has no obvious function for the plant. Much of this repetitive sequence appears to be transposons similar to MITEs. But like most genomes studied to date, including the human genome, the function of this highly repeated so-called "junk DNA" has been a mystery. The discovery of active transposons in rice provides startling new insights into how genomes change and what role transposons may play in the process.

Active DNA transposons can move new copies of DNA to different places in the genome. To hunt for active DNA transposons, the researchers made use of the publicly available genome sequences for two subspecies of rice, japonica and indica. The researchers reasoned that in plants where such transposons move actively there would be multiple copies of an almost identical sequence. If they could find the conserved sequences in the two rice genomes, then they could test for transposon movement in cell cultures because the number of elements should have increased over time.

Using this approach, the researchers found a repeated sequence of 430 base pairs that was identified as a candidate for an active MITE because of the high degree of sequence conservation among the copies. Recognizin
'"/>

Contact: Manny Van Pelt
mvanpelt@nsf.gov
703-292-8070
National Science Foundation
8-Jan-2003


Page: 1 2 3

Related biology news :

1. Scientists to prototype cyberinfrastructure for research and education access to ocean observatories
2. Scientists sequence genome of kind of organism central to biospheres carbon cycle
3. Scientists find nanowires capable of detecting individual viruses
4. Scientists discover potential new way to control drug-resistant bacteria
5. Scientists explore genome of methane-breathing microbe
6. Scientists decipher genetic code of biothreat pathogen
7. Stuck on you: Scientists lay bare secrets of bacterial attachment proteins
8. Scientists discover proteins involved in spread of HIV-1 infection
9. Scientists fear new Ebola outbreak may explain sudden gorilla disappearance
10. Scientists reinvent DNA as template to produce organic molecules
11. Scientists visualise cellular handmaiden that restores shape to proteins

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/7/2020)... , ... August 06, 2020 , ... ... industry, is pleased to announce that Eric Chen and Jessica Wong have joined ... Product Management & Strategy, respectively. , Eric Chen heads development efforts for Alucio’s ...
(Date:7/31/2020)... ... 30, 2020 , ... Justin Zamirowski to lead upcoming launches ... focus on Type 2 diabetes and associated comorbidities. , Justin brings over 20 ... classes. As Chief Commercial Officer, Justin will lead Better Therapeutics’ efforts ...
(Date:7/10/2020)... ... July 09, 2020 , ... Today CJ BIO announced the first in a ... the “fifth taste” phenomenon that is revolutionizing ingredient mixes, nutritional content and flavor profiles ... on Monday, July 13, 2020 at11:00 AM (CDT) during SHIFT20, the virtual edition of ...
Breaking Biology News(10 mins):
(Date:9/1/2020)... SOUTH RIDING, Va. (PRWEB) , ... September 01, ... ... search firm for life sciences, biotechnology, and diagnostics companies, has announced the placement ... Technologies . Averill will be responsible for leading all financial operations and implementing ...
(Date:8/12/2020)... ... 2020 , ... The FSHD Society announced today that it ... Trial Research Network (FSHD CTRN), with consideration of follow-on funding of $300,000 ... research centers in the United States and Europe with expertise in FSHD clinical ...
(Date:8/3/2020)... ... August 03, 2020 , ... ERT, the global ... has been named one of the 100 most inspiring individuals in the life-sciences ... are selected based on how they have inspired their colleagues and affected positive ...
(Date:7/31/2020)... (PRWEB) , ... July 29, 2020 , ... ... reliable, solid-state radar transmitter systems that can be configured to drive Klystrons, TWTs, ... controller that can drive one or two switches in a push-pull configuration; yielding ...
Breaking Biology Technology:
Cached News: