HOME >> BIOLOGY >> NEWS
One species, many genomes

This release is also available in German.

Faster growth, darker leaves, a different way of branching - wild varieties of the plant Arabidopsis thaliana are often substantially different from the laboratory strain of this small mustard plant, a favorite of many plant biologists. Which detailed differences distinguish the genomes of strains from the polar circle or the subtropics, from America, Africa or Asia has been investigated for the first time by research teams from Tübingen, Germany, and California led by Detlef Weigel from the Max Planck Institute for Developmental Biology. The results were surprising: The extent of the genetic differences far exceeds the expectations for such a streamlined genome, as the scientists write in this week’s edition of Science magazine.

To track down the variation in the genome of the different Arabidopsis strains, the researchers compared the genetic material of 19 wild strains with that of the genome of the lab strain, which was sequenced in the year 2000. Using a very elaborate procedure, they examined every one of the roughly 120 million building blocks of the genome. For their molecular sleuthing they used almost one billion specially designed DNA probes. "All together, these probes would have seven times the length of human genome," illustrates Weigel the extent of the project. The data were evaluated with several specially designed statistical methods, including a variant of machine learning.

The result of this painstaking analysis: on average, every 180th DNA building block is variable. And about four percent of the reference genome either looks very different in the wild varieties, or cannot be found at all. Almost every tenth gene was so defective that it could not fulfill its normal function anymore!

Results such as these raise fundamental questions. For one, they qualify the value of the m
'"/>

Contact: Detlef Weigel
weigel@tuebingen.mpg.de
49-707-160-11411
Max-Planck-Gesellschaft
20-Jul-2007


Page: 1 2 3

Related biology news :

1. Tropical birds have slow pace of life compared to northern species, study finds
2. Genes and groups of genes commonly shared between species, studies show
3. For some species, an upside to inbreeding
4. Conservation planning loopholes threaten imperiled species, researchers say
5. First surveys of Tanzanian mountains reveal 160+ animal species, including new & endemic
6. War between the sexes influences evolution in some species, say scientists
7. Reservoirs may accelerate the spread of invasive aquatic species, researchers say
8. Same mutation aided evolution in many fish species, Stanford study finds
9. Charting ever-changing genomes
10. Despite their heft, many dinosaurs had surprisingly tiny genomes
11. 2,000 influenza virus genomes now completed and publicly accessible

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


(Date:8/5/2020)... ... , ... Regenative Labs has received approval from the Centers for Medicare & ... first Wharton’s jelly allografts to be assigned a Q code and be approved for ... Wharton’s jelly allograft product to be recognized as a 361 HCT/P by CMS regulated ...
(Date:7/18/2020)... ... July 16, 2020 , ... A study has been published ... Neoasis™ active noise control device to attenuate typical noises in a simulated neonatal ... the alarm sounds from patient monitors, ventilators and other bedside devices that would ...
(Date:7/2/2020)... ... July 01, 2020 , ... AltruBio Inc. http://www.altrubio.com ... a biologic for the treatment of steroid-refractory acute graft-versus-host disease (SR-aGVHD), at European ... J Martin of the Fred Hutchinson Cancer Research Center, this single-arm, open-label Phase ...
Breaking Biology News(10 mins):
(Date:8/12/2020)... FARMS, Mich. (PRWEB) , ... August 12, 2020 ... ... Consulting Group, Inc. (EMMA International), a global leader in FDA compliance consulting ... of the nation’s fastest-growing private companies. The list represents a unique look at ...
(Date:8/3/2020)... (PRWEB) , ... August 03, 2020 , ... ... collection, today announced Jim Corrigan, President and CEO has been named one of ... broad cross-section of industry sectors, PharmaVoice 100 honorees are selected based on how ...
(Date:7/31/2020)... ... July 29, 2020 , ... R3 Stem Cell International is ... $3950. With 50 million stem cells total, patients may choose which extremities they would ... for arthritic joints (BMC Musculoskelet Disord. 2016). At R3 International, umbilical cord tissue is ...
(Date:7/31/2020)... ... July 29, 2020 , ... ... transmitter systems that can be configured to drive Klystrons, TWTs, IOTs, and magnetrons. ... drive one or two switches in a push-pull configuration; yielding fast fall time ...
Breaking Biology Technology:
Cached News: