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:3/19/2015)... Inc. (NASDAQ: NXTD ) ("NXT-ID" or the "Company"), ... market, announces its biometric payment technology, the Wocket® smart wallet ... on Washington DC,s Fox 5 News ... Next Great Thing", host Laura Evans calls the ... really big breakthrough in mobile payment.,  Award-winning ...
(Date:3/17/2015)... 17, 2015 MedNet Solutions , ... clinical study management systems, is pleased to announce ... ARENA,s Outsourcing in Clinical Trials Southeast conference – ... an excellent forum for MedNet to showcase ... software-as-a-service (SaaS) eClinical technology platform. We ...
(Date:3/17/2015)... , March 17, 2015  MecklerMedia Corporation (OTCQX: ... exhibition for service robots ever held in ... place on May 11-13, 2015 at the Javits ... for the event include: Acorn Product Development; Axis ... Infranor; Kinova Robotics; Littler; NewBotic Corporation; Neya Systems ...
Breaking Biology News(10 mins):NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 2NXT-ID's Wocket Smart Wallet Featured on Fox News Segment, "The Next Great Thing" 3Connect With MedNet Solutions At Outsourcing In Clinical Trials Southeast 2MecklerMedia's RoboUniverse New York Announces Sponsors and Exhibitors, May 11-13, 2015 2
... Brine water that flows back from gas wells in ... times more salty than seawater, with high contents of ... consistent with brines formed during the Paleozoic era, a ... Penn State,s Department of Geosciences found. The study indicates ...
... of Energy,s National Renewable Energy Laboratory (NREL) will partner ... a five-year, $7 million effort to economically produce drop-in ... the federal laboratory announced today. The work will ... (CRADA) between NREL and Johnson Matthey. "It,s a ...
... The Hass Avocado Board (HAB) is supporting ... benefits of consuming fresh avocados to human health ... investigate the relationship between avocado consumption and risk ... in weight management and diabetes, and avocados, ability ...
Cached Biology News:Analysis of Marcellus flowback finds high levels of ancient brines 2NREL and Johnson Matthey announce 5-year collaboration on biofuels 2Hass Avocado Board study published in Food & Function journal 2
(Date:3/30/2015)...  Multiple new research abstracts suggest walnuts may have ... From their impact on colon cancer and certain aspects ... gut health and vascular health, the research findings presented ... of walnuts, inner workings. Running March 28 through April ... meeting attracts an international audience of over 14,000 leading ...
(Date:3/30/2015)... -- US-Australian drug discovery company, Novogen Ltd, (ASX:NRT; NASDAQ: ... Yale University, on March 27 released pre-clinical data on ... an oral presentation by Professor Gil Mor ... nd Annual Scientific Meeting of the Society of ... In both in vitro and in ...
(Date:3/30/2015)... , March 30, 2015  Spherix Incorporated ... committed to the fostering and monetization of intellectual ... VTech,  Case No. 3:13-cv-03494-M and  Spherix v. Uniden ... States District Court for the Northern District of ... regarding Spherix v. Verizon, Case No. ...
(Date:3/30/2015)... -- Richmond Pharmacology nimmt weltweit den ... das erste Zentrum weltweit, das in Zusammenarbeit mit ... London in einer weltweiten ... einem Patienten begonnen hat. Das Therapeutikum wurde für ... einer seltenen Herz- und Nervenkrankheit. ...
Breaking Biology Technology:New Findings Support the Benefits of Eating Walnuts on Overall Health 2New Findings Support the Benefits of Eating Walnuts on Overall Health 3New Findings Support the Benefits of Eating Walnuts on Overall Health 4Yale University and Novogen Release Data on Cantrixil Mode of Action 2Yale University and Novogen Release Data on Cantrixil Mode of Action 3Yale University and Novogen Release Data on Cantrixil Mode of Action 4Spherix Provides Update on Litigation vs. VTech, Uniden and Verizon 2Spherix Provides Update on Litigation vs. VTech, Uniden and Verizon 3
... June 16 Naviscan PET Systems(R), a company,specializing ... the Society of Nuclear Medicine,s Annual Meeting, new ... cancer management. The PEM,Flex(TM) Solo II is a ... for the breast application known as positron,emission mammography, ...
... Medullary Thyroid Cancer Planned to Initiate This Summer, ... Inc. (Nasdaq: EXEL ) announced today that ... (FDA) have reached agreement on the phase 3,registration ... targeting,MET, RET, and VEGFR2, via the Special Protocol ...
... NDC #58177-320-04 & 58177-330-04 ... Lot Numbers listed below, ST. ... recalled specific additional lots of morphine,sulfate 60 mg extended release tablets, ... a precaution, due to the,possible presence of oversized tablets. Oversized tablets ...
Cached Biology Technology:Naviscan's PEM Flex(TM) Detects Smallest Cancers Better Compared to MRI in an Independent Study 2Exelixis Reaches Agreement with FDA on Special Protocol Assessment for XL184 Phase 3 Trial 2Exelixis Reaches Agreement with FDA on Special Protocol Assessment for XL184 Phase 3 Trial 3Exelixis Reaches Agreement with FDA on Special Protocol Assessment for XL184 Phase 3 Trial 4Exelixis Reaches Agreement with FDA on Special Protocol Assessment for XL184 Phase 3 Trial 5ETHEX Corporation Voluntarily Recalls Specific Lots of 30 mg. and 60 mg. Morphine Sulfate Extended Release Tablets Due to the Potential for Oversized Tablets 2ETHEX Corporation Voluntarily Recalls Specific Lots of 30 mg. and 60 mg. Morphine Sulfate Extended Release Tablets Due to the Potential for Oversized Tablets 3ETHEX Corporation Voluntarily Recalls Specific Lots of 30 mg. and 60 mg. Morphine Sulfate Extended Release Tablets Due to the Potential for Oversized Tablets 4
Autoclavable, variable volumefitted w./ an anti-drip safety valve; borosilicate glass barrelprotected with transparentpolypropylene sleeve; spring-lock cursor design ensuresfine adjustment for exact ...
Spaced cover glasses to promote effective hybridization...
Disposable tips with floating filter (US Patent 6,702,990) for PDM1.5 OneTouch Plus spotpicker, 10 racks of 96, DNAse and RNAse free...
... new D-LUX Detection Platform combines robust ... the most sensitive, specific, and cost-effective ... D-LUX Detection Platform offers exceptional performance ... TaqMan probes, high signal/background ratio, and ...
Biology Products: