Navigation Links
Auto immune response creates barrier to fertility; could be a step in speciation
Date:9/3/2007

Plant biologists at the Max Planck Institute of Developmental Biology and the University of North Carolina at Chapel Hill have discovered that an autoimmune response, triggered by a small number of genes, can be a barrier to producing a viable offspring.

Studying Arabidopsis thaliana, sometimes called thale cress, the researchers identified a phenotype that, when paired together from a male and female, produced plants that survived only long enough to produce a few leaves, then died a phenomenon called hybrid necrosis; literally, death. The dead plants resembled what would result from a mortal infection, despite the absence of a pathogen.

This finding presents a new theory in the development of new species: two plants of the same species fail to reproduce not because of infestation or infection from an outside organism, nor from problems with reproductive organs.

If two otherwise healthy members of a species cannot produce progeny, theyre on a track toward no longer being members of the same species, said Jeff Dangl, Ph.D., John N. Couch professor of biology, microbiology and immunology and associate director of the Carolina Center for Genome Sciences. This could be a very early event in what will, over time, lead to speciation.

The study appears in the Sept. 4, 2007, issue of PLoS Biology.

The initial finding was serendipitous, Dangl said. Detlef Weigel, at Max Planck, shared with Dangl some photos of Arabidopsis hybrids from a project by Kirsten Bomblies, a postdoctoral fellow in Weigels lab that was meant to study the timing of flowering..

I said, those look just like autoimmune mutants, Dangl recalled.

Bomblies, Weigel and others at Max Planck crossed 280 genetically different strains of Arabidopsis from around the world into 881 different combinations: 2 percent of these crosses gave necrotic offspring. They all had similar gene expression profiles, a group of about 1,000 genes that would
'/>"/>

Contact: Clinton Colmenares
clinton_colmenares@unc.edu
919-843-1991
University of North Carolina at Chapel Hill
Source:Eurekalert

Page: 1 2

Related biology news :

1. Fox Chase Cancer Center scientists identify immune-system mutation
2. NYU Study Reveals How Brains Immune System Fights Viral Encephalitis
3. Genetically modified natural killer immune cells attack, kill leukemia cells
4. Studies reveal methods viruses use to sidestep immune system
5. Jumping gene helps explain immune systems abilities
6. Scientists solve structure of key protein in innate immune response
7. Rats infected as newborns grew up vulnerable to memory problems during an immune challenge
8. NYU study reveals how brains immune system fights viral encephalitis
9. Chemists identify immune system mechanism for methamphetamine binges
10. Multi-purpose protein regulates new protein synthesis and immune cell development
11. Genetically Modified Natural Killer Immune Cells Attack, Kill Leukemia Cells
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/22/2014)... , Dec. 22, 2014  NXT-ID, Inc. (NASDAQ: ... a biometric authentication company focused on the growing mobile ... and security consultant, Apollo Robbins for the ... wallet.  Apollo Robbins will ... th , 2015, demonstrating some of his famous theft ...
(Date:12/22/2014)... Dec. 22, 2014  The 2014 Holiday Season ... industry as Acuity Market Intelligence reports that the ... be open. Acuity forecasts that intensifying demand for ... incorporate biometrics will drive a global market of ... devices by 2020.   According to ...
(Date:12/19/2014)... --Research and Markets ( http://www.researchandmarkets.com/research/86ncd6/micro_market ) has ... North America Perimeter Security Systems Market" report to ... The North American perimeter security market is ... 2014 to 2019. Although the U.S. market holds a ... is expected to grow at a higher CAGR ...
Breaking Biology News(10 mins):NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 2NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 3NXT-ID Hires Master Pickpocket and Security Consultant Apollo Robbins for Wocket Smart Wallet CES 2015 Debut 4First 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 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 2Micro Market Monitor: North America Perimeter Security Systems Market (Intrusion Detection Sensor, Video Surveillance, Communication/Alarm and Notification, Access Control System) 3
... be done, but researchers from the University of ... Energy Technology Laboratory (NETL) in Pittsburgh demonstrated a ... nanoscale process with sizable potential in areas from ... report in the Dec. 12 edition of ...
... Park, the last stronghold for the savanna elephants of ... animals, down from an estimated 3,000 in 2006. ... particularly when herds venture seasonally outside of the ... in Chad. Several park guards have been shot ...
... at Queen,s University Belfast is playing a major role in ... chemical contaminants in food and animal feed. Professor Chris ... at Queen,s, will lead a team of scientists in developing ... toxins in a wide range of foods including meat, poultry, ...
Cached Biology News:Missing: 2,000 elephants 2Queen's University Belfast plays leading role in Europe-wide tests for safer food 2
(Date:12/24/2014)... 23, 2014  Rock Creek Pharmaceuticals, Inc., (NASDAQ: ... a Clinical Trial Application (CTA) with the ... (MHRA) seeking regulatory approval to initiate clinical trials for ... Contingent on the Company receiving CTA regulatory ... trial to assess the safety, tolerability and dose escalation ...
(Date:12/22/2014)... 22, 2014  Alternative Energy & Environmental Solutions, ... signed a letter of intent to acquire BioTechPharma ... patented a nanotechnology-based development platform used to create ... rapid on-site collection and testing to identify infectious ... in an immediate, non-invasive and cost-effective manner. ...
(Date:12/22/2014)... Fertility Associates of Memphis has announced a ... a network of more than 20 contributing fertility ... fast access to a national pool of frozen ... Associates of Memphis is the only fertility clinic in ... Dr. William Kutteh , director of Fertility Associates ...
(Date:12/19/2014)... 19, 2014  Roche (SIX: RO, ROG; OTCQX: RHHBY) ... (Bina), a privately held company based in ... provides a big data platform for centralized management ... Bina,s proprietary on-market Genomic Management Solution, Bina-GMS 1 ... perform fast and scalable analyses to maximize the ...
Breaking Biology Technology:Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 2Rock Creek Pharmaceuticals Files Clinical Trial Application in the UK for Clinical Trials of Anatabine Citrate Formulations 3ALNE Announces Intention To Acquire BioTechPharma 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 2Fertility Associates of Memphis Announces Partnership with Donor Egg Bank USA 3Roche acquires Bina Technologies and enters the genomic informatics market 2Roche acquires Bina Technologies and enters the genomic informatics market 3
...  LCA-Vision Inc. (NASDAQ: LCAV ), a leading ... ® brand, today announced that management will present at the ... January 17, 2012, at 3:00 p.m. Eastern time.  A live ... the Investor Relations section of LCA-Vision,s website at www.lasikplus.com ...
... way pavement, softened by a hot sun, will slow ... wondrous propertiesslows down an object sliding across its surface. ... say theorists at the National Institute of Standards and ... material,s friction. "I don,t think anyone expects graphene ...
... 2012 PharmAthene, Inc. (NYSE Amex: PIP ), ... threats, announced today that Eric I. Richman, President and Chief ... Eighth Annual Equity Conference on Tuesday, January 17, 2012 at ... Hard Rock Hotel, Hollywood Florida.  Mr. Richman ...
Cached Biology Technology:Slippery when stacked: NIST theorists quantify the friction of graphene 2PharmAthene to Present at the Noble Financial Eighth Annual Equity Conference on Tuesday, January 17, 2012 2
Rabbit polyclonal to Olfactory Receptor LS189744 ( Abpromise for all tested applications)....
C/EBPdelta Antibody Shipping Temperature: Cold Storage Temperature: -20C...
Ubiquitin-like protein 4A (Ubiquitin-like protein GDX). [Source:Uniprot/SWISSPROT;Acc:P11441] Antigen: Recombinant Protein Epitope Signature Tag (PrEST)....
Mouse monoclonal [11C9] to Zeralenone ( Abpromise for all tested applications). Antigen: Chemical / Small Molecule conjugated to BSA: Zeralenone...
Biology Products: