Navigation Links
How does inbreeding avoidance evolve in plants?
Date:6/10/2013

Inbreeding is generally deleterious, even in flowering plants. Since inbreeding raises the risk that bad copies of a gene will be expressed, inbred progeny suffer from reduced viability.

Many flowering plants are able to recognize and reject their own pollen, thereby preventing inbreeding despite the plants' hermaphroditic nature. This mechanism is a complex trait that involves the interaction of a gene that tags the pollen with an identifier molecule, and a gene that produces a molecule capable of detecting pollen produced by the same plant.

Evolutionary biologists have often argued that once complex traits are lost, they are seldom regained. But a new study, led by biologists at McGill University and published in the journal PLOS Biology, suggests that this may not be the case for self-pollen recognition.

In the evolutionary lineage leading to the genus Leavenworthia (a plant group related to canola and cole crops such as broccoli and cabbage), the ancestral genes that code for self-pollen recognition were lost. But the self-pollen recognition function in Leavenworthia appears to have been taken up by two other genes that originally may have had a different role -- for example, in pathogen recognition.

"Self-incompatibility," the pollen-recognition system that enables plants to avoid the inbreeding caused by self-pollination, involves a pair of tightly linked genes known as the S locus. In this study, the researchers analyzed the gene sequence, genome organization, and gene evolutionary history of S loci in members of the Brassicaceae family, which includes plants of the genus Leavenworthia.

"We conclude that both genes that comprise the ancestral S locus in the Brassicaceae were lost in Leavenworthia," says McGill researcher Sier-Ching Chantha, lead author of the study. Our analyses show, however, that plants of this genus have two other linked genes that exhibit patterns char
'/>"/>

Contact: Chris Chipello
christopher.chipello@mcgill.ca
514-398-4201
McGill University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Leading evolutionary scientist to discuss how genome of bacteria has evolved
2. Excessive worrying may have co-evolved with intelligence
3. Hitting snooze on the molecular clock: Rabies evolves slower in hibernating bats
4. As world warms, conservation evolves
5. Out of the mouths of primates, facial mechanics of human speech may have evolved
6. Giving ancient life another chance to evolve
7. Same adaptations evolve across different insects
8. Ion selectivity in neuronal signaling channels evolved twice in animals
9. Notre Dame researcher is shedding light on how jaws evolve
10. Menopause evolved to prevent competition between in-laws
11. A clearer picture of how assassin bugs evolved
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/5/2014)... , Dec. 4, 2014 Increased ... boosted investments in new testing and inspection technologies. ... given rise to a range of innovative test ... requirements of Generation Y, which is generally more ... a result, product development strategies of test equipment ...
(Date:11/21/2014)... , November 18, 2014 According ... Market by Systems (Video, RFID, Access Control, Intrusion Detection, ... Hotels, Banks, Government), Component Service Geography - Global Forecasts ... Market is projected to be around $25 Billion in ... 2020, growing at a CAGR of 8.69%. ...
(Date:11/18/2014)... , Nov. 18, 2014  The Secure Identity ... Association today jointly announce the formation of The ... of its Identity and Biometric Entry and ... Framework received official support from BORDERPOL, the international ... improve and provide expertise regarding border security, traveler ...
Breaking Biology News(10 mins):Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 2Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 3Emerging Technologies Enable Smarter Monitoring of Assets, Push Industrial Testing, Inspection and Monitoring Market 4Industrial Security Systems Market Worth $38 Billion by 2020 2Industrial Security Systems Market Worth $38 Billion by 2020 3Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 2Identity Management, Document Authentication and Biometric Companies Form "The Airport Entry and Exit Working Group", Releasing the Framework to Help Guide the Department of Homeland Security and Congress Towards Solutions 3
... for their future needs just as we humans can ... and Helena Osvath,s research, from Lunds University Cognitive Science ... of advanced planning capacities in non-human species. Their findings ... Animal Cognition . The complex skill of future ...
... The world,s only known hairy-nosed otter in captivity, one of the ... and a Buddhist blessing today. ... killed by a fisherman, was released into a large new enclosure ... located near Phnom Penh. The release was celebrated with a ...
... be the early targets of new trans-Pacific research using ... of Queensland (UQ) and the University of Washington (UW) ... Anna Bligh announced $650,000 from the National and International ... of the pathogens of two debilitating mosquito-borne diseases, malaria ...
Cached Biology News:Great apes think ahead 2World's only captive hairy-nosed otter gets new home 2World's only captive hairy-nosed otter gets new home 3
(Date:12/24/2014)... PharmaBoardroom,s new report, , Healthcare and ... free download , digs deep into this vibrant market, ... sector today. One area where Algeria ... a homegrown pharmaceutical manufacturing base, even if the government,s ambitious ... off. A cursory comparison with neighboring Morocco ...
(Date:12/24/2014)... 2014  Rock Creek Pharmaceuticals, Inc., (NASDAQ: ... Clinical Trial Application (CTA) with the United ... seeking regulatory approval to initiate clinical trials for the ... Contingent on the Company receiving CTA regulatory approval, ... to assess the safety, tolerability and dose escalation of ...
(Date:12/22/2014)... 22, 2014 The Center for ... of technical training across the life sciences industry, has ... (SCDM) to provide the organization's members with discounted ... access to the more than 350 sessions across 80 ... 10% off when registering for a public course ...
(Date:12/22/2014)... - RepliCel Life Sciences Inc. (OTCQB: REPCF) (TSX.V: RP), ... development of autologous cell therapies, announced today the publication ... in conjunction with co-authors from Kyoto University and the ... ongoing clinical research using dermal sheath cup (DSC) cells ... The paper entitled " Hair Follicle Dermal Stem Cells ...
Breaking Biology Technology:PharmaBoardroom Releases New Algeria Pharmaceuticals Report 2PharmaBoardroom Releases New Algeria Pharmaceuticals Report 3Rock 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 3CfPIE Announces Partnership with the Society for Clinical Data Management 2CfPIE Announces Partnership with the Society for Clinical Data Management 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 2Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 3Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 4Newly Released Peer-Reviewed Publication Further Validates RepliCel's Use of Dermal Sheath Cup Cells to Treat Pattern Baldness 5
... Fond du Lac, Wis. -- Careers in manufacturing are ... be on the horizon. It appears a negative public ... assembly-line work and lay-offs - is thwarting young adults ... a projected need for 10 million new skilled workers ...
... Madison, Wis. - The Department of Commerce (Commerce) ... under the new Angel Investor and Venture Fund Tax ... to make these crucial investments, we are helping to ... Jim Doyle said. , ,The Angel Investor and ...
... low prices. When it comes to consumer goods, America is ... fanatical commitment to low prices, Wal-Mart is the biggest low-price ... the place to get it. , ,The company that many ... lately. Union and activist groups have successfully derailed its growth ...
Cached Biology Technology:State campaign seeks to reverse negative perception of manufacturing work 2State campaign seeks to reverse negative perception of manufacturing work 3State campaign seeks to reverse negative perception of manufacturing work 4State campaign seeks to reverse negative perception of manufacturing work 5Five technology companies qualify for investor tax credits 2Wal-Mart: How low can you go? 2Wal-Mart: How low can you go? 3Wal-Mart: How low can you go? 4
ANTI-RAT ADHESION MARKERS, CDs, CYTOKINES, ETC Rat ICAM PE - Mouse IgG1...
C/EBPalpha Antibody Shipping Temperature: Cold Storage Temperature: -20C...
Rabbit polyclonal to Tryptophanyl tRNA synthetase ( Abpromise for all tested applications). Antigen: Recombinant full length protein (Human): Tryptophanyl tRNA synthetase Entrez Gene ID: 745...
Goat polyclonal to FBXO2 ( Abpromise for all tested applications). entrezGeneID: 26232 SwissProtID: Q9UK22...
Biology Products: