Navigation Links
How the plant immune system can drive the formation of new species
Date:9/3/2007

Plant geneticists know that not all plants from the same species can be successfully bred. Apparently, there are reproductive barriers that not only prevent the exchange of genes between well-established species (which goes to the very definition of a species), but also between varieties of one and the same species. How these barriers arise is of central importance if one wants to understand the origin of biodiversity. A research team led by Detlef Weigel from the Max Planck Institute of Developmental Biology in Germany and Jeff Dangl from the University of North Carolina has now shown that a mis-regulated plant immune system can establish reproductive barriers and might be a first step toward speciation.

The international collaboration studied a genetic incompatibility known as hybrid necrosis, using thale cress, Arabidopsis thaliana. The new study, reported in the latest edition of the open-access journal PLoS Biology, was based on the observation that unfit hybrids arising in different plant species are very similar. Their growth is retarded, the leaves become yellow and necrotic, the tissue collapses, and they often do not survive to make flowers; the syndrome is generally known as hybrid necrosis. We suspected that hybrid necrosis is always caused by the same biochemical mechanism, explains Weigel, director at the Max Planck Institute.

To test this hypothesis, the scientists took 280 genetically different strains of Arabidopsis from all over the world, which they crossed in 861 different combinations. Most of the hybrid plants were strong and grew normally, but 20or two percentof the crosses produced only small necrotic and unhealthy plants. Genomics-based experiments showed that these hybrids all had a comparable profile of gene activity: A common group of some 1000 genes were either more strongly or more weakly active in the hybrids than in their healthy parents. Moreover, this pattern was very similar to what is seen with a stron
'/>"/>

Contact: Natalie Bouaravong
press@plos.org
415-568-3445
Public Library of Science
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants
2. Key molecule in plant photo-protection identified
3. Plants, animals share molecular growth mechanisms
4. Plants respond similarly to signals from friends, enemies
5. Affymetrix Unveils Plans to Double Plant and Animal Genome Microarray Offering
6. Transplantation Of Monkey Embryonic Stem Cells Reverses Parkinson Disease In Primates
7. Emory Eye Center Implants Its First Retinal Chips In Patients With Retinitis Pigmentosa
8. Plant hemoglobins: Oxygen handlers critical for nitrogen fixation
9. Circles Of DNA Might Help Predict Success Of Stem Cell Transplantation
10. Plants defy Mendels inheritance laws, may prompt textbook changes
11. Antibodies from plants protect against anthrax
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2015)... , March 24, 2015   Crossmatch ... solutions, today announced that its U.are.U ® ... retailer Goorin Bros . to achieve PCI ... solution secures access to the POS terminal, protecting ... risk of data breaches. With ...
(Date:3/23/2015)... YORK , March 23, 2015   HOYOS ... property management company, today announced that the Company will ... for both enterprise and consumers at Connect:ID on March ... HOYOS Labs will highlight the IEEE Biometric ... TM ; and enterprise access control system. BOPS ...
(Date:3/23/2015)... OXFORD, Conn. , Mar. 23, 2015 NXT-ID, Inc. ... authentication company focused on the growing mobile commerce market, announces ... a new advertising campaign on CNBC television starting March 30 ... ads will commence airing in New York ... Executive Officer said: "We are excited about our new ad ...
Breaking Biology News(10 mins):Crossmatch Fingerprint Readers Help Retailer Prevent Data Breaches at Point-of-Sale 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 2HOYOS Labs to Showcase Host of Biometrics Technologies at Connect:ID in Washington, D.C. 3NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 2NXT-ID's Wocket Smart Wallet to Launch New CNBC Regional TV Ad Campaign 3
... New research in The FASEB Journal suggests that rats ... and increased appetite and muscle mass, as well as the number ... are looking to lean out, add muscle mass, and get ripped, ... ( http://www.fasebj.org ) suggests that you might want to look to ...
... Species, ability to overcome adversity goes beyond Darwin,s survival of ... a new study based on simulations examining species and their ... animal can make it to a final, climate-friendly destination isn,t ... way. It,s the extent to which the creatures can withstand ...
... endangered, but their long lives and broad distribution make ... level to different populations and devise appropriate conservation strategies. ... method to evaluate spatially and biologically distinct groups of ... identify threats and data gaps at different scales. ...
Cached Biology News:Lift weights, eat mustard, build muscles? 2Climate change will show which animals can take the heat 2Climate change will show which animals can take the heat 3
(Date:4/23/2015)... CA (PRWEB) April 23, 2015 Athena ... personal development of executive women in San Diego’s technology ... the 17th Annual Pinnacle Awards at their Gala on ... Hyatt Hotel. Register now at http://athenasd.org/events/ , ... support the Athena San Diego vision of fostering networking, ...
(Date:4/23/2015)... , April 23, 2015  Neurocrine Biosciences, Inc. (Nasdaq: ... report its first quarter 2015 results before the Nasdaq ... then host a live conference call and webcast to discuss ... morning, April 30, 2015 at 8:00 a.m. Eastern Time ... the live conference call by dialing 866-952-1906 (US) or ...
(Date:4/23/2015)... Prospects for Leading Companies in ... Details   We predict the global healthcare ... in 2015 and will grow at a CAGR of 6.3% ... around the world and increasing functional requirements for healthcare packaging ... global healthcare packaging market. A global ageing population, ...
(Date:4/23/2015)... April 23, 2015 /PRNewswire/ - Crystal Research Associates, LLC ... Overview ® (EIO) on Aeterna Zentaris Inc. (NASDAQ: ... available on Crystal Research Associates, website at ... website at www.aezsinc.com . Aeterna Zentaris ... biopharmaceutical company in oncology, endocrinology, and women,s health. With ...
Breaking Biology Technology:Athena Pinnacle Awards to Honor Executives, Corporations and Educators Working to Promote Women Leaders 2Neurocrine Biosciences Announces Conference Call and Webcast to Report First Quarter 2015 Results 2Healthcare Packaging Market Forecast 2015-2025 2Healthcare Packaging Market Forecast 2015-2025 3Healthcare Packaging Market Forecast 2015-2025 4Healthcare Packaging Market Forecast 2015-2025 5Healthcare Packaging Market Forecast 2015-2025 6Healthcare Packaging Market Forecast 2015-2025 7Healthcare Packaging Market Forecast 2015-2025 8Healthcare Packaging Market Forecast 2015-2025 9Healthcare Packaging Market Forecast 2015-2025 10Crystal Research Associates, LLC Issues Executive Informational Overview (EIO) on Aeterna Zentaris Inc. 2Crystal Research Associates, LLC Issues Executive Informational Overview (EIO) on Aeterna Zentaris Inc. 3
... Sept. 19 NPS,Pharmaceuticals, Inc. (Nasdaq: NPSP ... Administration,s Office of Orphan Products Development has granted,orphan ... for,injection) for the treatment of hypoparathyroidism, a rare ... FDA-approved therapy. Hypoparathyroidism afflicts approximately 65,000 people ...
... NeurogesX, Inc.,(Nasdaq: NGSX ), a biopharmaceutical company ... it is scheduled to present,at the 2007 UBS Global ... President and Chief Executive Officer, and Jeffery,Tobias, Chief Medical ... September 25, 2007 Time: 9:00 a.m. ...
... Sept. 19 The Pittsburgh Life Sciences,Greenhouse ... life,sciences industry on a fast track for ... in Coventina Healthcare Enterprises, Inc., a medical,device ... Frequency),and multi-modal treatment systems for research, rehabilitation, ...
Cached Biology Technology:PREOS(R) Granted U.S. Orphan Drug Status for Treatment of Hypoparathyroidism 2PREOS(R) Granted U.S. Orphan Drug Status for Treatment of Hypoparathyroidism 3NeurogesX to Present at UBS 2007 Global Life Sciences Conference 2NeurogesX to Present at UBS 2007 Global Life Sciences Conference 3The PLSG Invests $150,000 in Coventina Healthcare Enterprises, Inc., Its Eighth Company Relocation to Pittsburgh 2The PLSG Invests $150,000 in Coventina Healthcare Enterprises, Inc., Its Eighth Company Relocation to Pittsburgh 3
Anti-Wnt-2 Polyclonal Antibody Description: 100 g purified goat polyclonal antibody. Reacts with human/mouse/rat. Tested in Western blot/IP/IHC. Research Focus: signal transduction Storage...
... The Bio-Plex maintenance, calibration, ... is a custom 96-well plate ... validation, and calibration procedures using ... This MCV plate is for ...
... Mynox is the first biological ... killing them, and not just ... the only anti-mycoplasma agent that ... virus stocks directly. The cytotoxicity ...
A component of the Acridinium protein labeling kit....
Biology Products: