Navigation Links
Are new genes always better?
Date:1/30/2010

Re-vegetation seems like a beneficial strategy for conserving and restoring damaged ecosystems, and using a variety of species can help increase biodiversity in these systems. But what are the risks involved with introducing seeds from other locations to plants located near the damaged site? Introduced populations often hybridize with the local populations from the same species, which can result in "polluting" neighboring populations with genes that are poorly adapted to local conditions. Long-term consequences of such "pollution" could negatively impact the survival of the existing native populations.

A recent article in the January issue of the American Journal of Botany by Lisle Crmieux and colleagues from the University of Fribourg in Switzerland (http://www.amjbot.org/cgi/content/full/97/1/94) looks at how gene flow from two distant populations and one local, but ecologically distinct, population affected a local population of Plantago lanceolata, a short-lived perennial herb. Seedling size, adult vegetative biomass, and estimated seed production were measured for two hybrid generations plus the first generation backcrossed with the local parents.

"We wanted to know whether the provenance of the seed material used in ecosystem restoration had an effect on the fitness of neighboring, locally adapted, populations," Crmieux said, "and not only on the success of the restored area itself."

The farther away two populations are, the larger the genetic differences are assumed to be and the more negative the consequences of hybridizing them. Crmieux and colleagues found that by the end of the growing season, the parental plants from the two distant (foreign) populations were smaller and produced fewer seeds than the local plants, indicating they were not well-adapted to the local environment. However, while the first generation of offspring resulting from local plant
'/>"/>

Contact: Richard Hund
rhund@botany.org
314-577-9557
American Journal of Botany
Source:Eurekalert

Page: 1 2

Related biology news :

1. Gene regulation, not just genes, is what sets humans apart
2. Interaction of just 2 genes governs coloration patterns in mice
3. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
4. Study finds blocking angiogenesis signaling from inside cell may lead to serious health problems
5. Smoking turns on genes -- permanently
6. Genes, Environment and Health Initiative invests in genetic studies, environmental monitoring
7. Hebrew SeniorLife researchers search for aging, osteoporosis genes
8. UT Southwestern researchers identify hundreds of genes controlling female fertility
9. Genes and environment grant funds close look at nature-nurture overlap in common diseases
10. Jumping genes could make for safer gene delivery system
11. Genes from the father facilitate the formation of new species
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/30/2014)... National Institutes of Health (NIH) awarded Lawrence Livermore ... an electrode array system that will enable researchers ... unprecedented resolution and scale. , LLNL,s grant-funded project ... Obama,s BRAIN (Brain Research through Advancing Innovative ... revolutionize our understanding of the human mind and ...
(Date:9/30/2014)... professor and Howard Hughes Medical Institute investigator, and ... recipients in the 2014 round of grants from ... BRAIN (Brain Research through Advancing Innovative Neurotechnologies) Initiative ... September 30, provides more than $3 million in ... , The BRAIN Initiative, launched last year, is ...
(Date:9/30/2014)... of environmental scientists and engineers, led by Clemson ... three-year, $5.25 million grant from the U.S. Department ... to make a direct positive impact on South ... disposal of radioactive contaminants. , "Understanding the scientific ... with environmental aspects of nuclear technologies is imperative ...
Breaking Biology News(10 mins):NIH taps lab to develop sophisticated electrode array system to monitor brain act 2NIH taps lab to develop sophisticated electrode array system to monitor brain act 3Salk scientists receive $3 million for BRAIN Initiative grant 2Researchers get $5.25 million to advance nuclear technologies in South Carolina 2
... produce increases, vegetable and fruit producers are facing ... challenged to examine traditional production practices in order ... A recent focus on both the positive and ... the globe working to find methods that can ...
... Motor commands issued by the brain to activate arm ... led by Professor Silvia Arber at the University of ... Research has now discovered, many neurons in the spinal ... but at the same time also back to the ...
... Drosophila (fruit fly) can be synchronised using vibrations, ... . The results suggest that an animal,s own movements can ... daily rhythms characterising most of our bodily functions including the ... and temperature. Researchers at UCL and Queen Mary, University ...
Cached Biology News:Nitrogen management studied in greenhouse pepper production 2Cc to the brain: How neurons control fine motor behavior of the arm 2Cc to the brain: How neurons control fine motor behavior of the arm 3
(Date:9/30/2014)... (PRWEB) September 30, 2014 On September 11, ... James Sherley in anticipation of a session that he will ... Toxicology Summit,” scheduled for February 17-18, 2015 in London. ... Pharma IQ asked Dr. Sherley to respond to several questions ... toxicity, challenges to evaluating stem cell toxicity, and future trends ...
(Date:9/29/2014)... CA (PRWEB) September 30, 2014 ... million burn injuries require medical attention. In the ... brings serious complications to battlefield medical care. More ... Iraq and Afghanistan. Burn wounds heal slowly, remain ... can be excessive, physically debilitating and functionally damaging. ...
(Date:9/29/2014)... TORONTO , Sept. 29, 2014 /PRNewswire/ - Portage Biotech ... Exchange: PBT.U), is pleased to announce that its three ... of Portage, who advanced $ 100,000 each in July ... have their Notes and related Coupons converted into 3,500,001 ... and carried 5% coupon. Both the Note and the ...
(Date:9/29/2014)... 29, 2014 Transparency Market Research, in ... SPPS, LPPS, HPPS, by Application - Cancer, Metabolic, CVS, ... and by Delivery) - Global Industry Analysis, Size, Share, ... the global peptide therapeutics market was worth US$14.1 billion ... by 2018 at an 8.7% CAGR. , The two ...
Breaking Biology Technology:Adult Stem Cell Technology Center, LLC Director James L. Sherley Discusses Stem Cell Toxicology 2Adult Stem Cell Technology Center, LLC Director James L. Sherley Discusses Stem Cell Toxicology 3Adult Stem Cell Technology Center, LLC Director James L. Sherley Discusses Stem Cell Toxicology 4Faster Healing with Fewer Scars 2Portage announces conversion of its debt into equity 2Portage announces conversion of its debt into equity 3Global Peptide Therapeutics Market to be Worth US$25.4 Billion by 2018: Transparency Market Research 2Global Peptide Therapeutics Market to be Worth US$25.4 Billion by 2018: Transparency Market Research 3
... Sequella, Inc., a clinical-stage biopharmaceutical company focused on ... today announced that it received a $594,661 two-year ... National Institutes of Health (NIH), National Institute of ... of SQ641, Sequella,s lead compound in its capuramycin ...
... Dr. Michael Merzenich , PhD - ... plasticity expert and tech entrepreneur - was formally ... D.C. Also a member of the National Academy of Sciences, ... and doctors in the U.S. who have been selected for ...
... CITY, England, October 12 , ... and Milestones Plus,Royalties , Heptares Therapeutics ... announced today that it has,entered into an option agreement with ... StaR(TM) technology to generate novel,drug leads against a nominated, unspecified ...
Cached Biology Technology:Sequella Obtains Funding to Continue Expansion of its Anti-infectives Pipeline 2Sequella Obtains Funding to Continue Expansion of its Anti-infectives Pipeline 3Dr. Michael Merzenich Joins Venerable Short List Honored for Cutting-Edge Neuroscientific Research 2Dr. Michael Merzenich Joins Venerable Short List Honored for Cutting-Edge Neuroscientific Research 3Heptares Therapeutics Announces Agreement With Novartis Option Fund to Apply its StaR(TM) Technology and Generate Novel Drug Leads Against a GPCR Target 2Heptares Therapeutics Announces Agreement With Novartis Option Fund to Apply its StaR(TM) Technology and Generate Novel Drug Leads Against a GPCR Target 3
... The Zero Blunt TOPO ... Sequencing is designed for ... of blunt-end PCR products. ... 5-minute TOPO Cloning and ...
... Blunt TOPO PCR Cloning ... designed for cloning and ... PCR products. The pCR4Blunt-TOPO ... Cloning and greater than ...
... EA. Ultrospec 6300 pro UV/Visible ... the Pharmacopoeia in terms of instrument specification ... being able to be used for rapid, ... excellent scanning capability., *Press to read high ...
...
Biology Products: