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

s crossed with foreign plants did not do as well as the local parents, some second-generation offspring and all the backcrossed plants performed as well as the local plants. Thus, over time the poorer performing foreign genes were diluted with parental genes from the local population with the end result of fewer maladapted genotypes overall.

If distance from the site did not show long-term negative effects, how would genes from populations located closer to the damaged site but from a contrasting environment affect local plant populations? When local plants were crossed with plants from a nearby, but much drier, site, seedling performance in the first and second generation of progeny was much worse than in the distant crosses.

Although the study is relatively small scale, three generations of offspring were followed, which is relevant for assessing long-term consequences of introducing new genes to populations. The authors conclude that when new, foreign genes are introduced to a damaged site, the neighboring populations may experience initial negative effects; however, over time, as long as the populations do not experience additional foreign gene input, the negative effects may diminish and the maladapted foreign genes will decrease. Moreover, when selecting seeds or plants for re-vegetating damaged sites, it may be more important to match up habitat types or environments than be concerned with distance per se.

"More research on the long-term effects of gene flow introduced into local populations and their consequences for population persistence in widespread and rare plant species is needed to determinate the generality of these findings," said Crmieux.


'/>"/>

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:7/21/2014)... Growers of annual bedding plant seedlings or plugs ... a large stem diameter and high root dry ... during shipping and transplant. To achieve these desirable ... on supplemental lighting from high-pressure sodium lamps during ... diodes (LEDs) can give greenhouse growers other lighting ...
(Date:7/21/2014)... their cells are stressed when facing temperature extremes. Worse ... in the cell are slowed down more than others, ... of whack. Yet, those cells manage to keep their ... Rochester and the European Molecular Biology Laboratory have found ... of proteins is a key process in all cells, ...
(Date:7/20/2014)... A study of 473 sets of twins followed since ... of 24-month-old identical twins had language delay compared to ... the rate of late language emergence of single-born children. ... , The results of the study were published in ... Hearing Research . , University of Kansas Distinguished ...
Breaking Biology News(10 mins):LEDs shine in bedding plant production study 2When temperatures get cold, newly-discovered process helps fruit flies cope 2Large twin study suggests that language delay due more to nature than nurture 2Large twin study suggests that language delay due more to nature than nurture 3
... things that exist underground, plant roots are out-of-sight and ... plant parts are more familiar, plant roots are equally ... crop, and dazzling ornamental lies a root system that ... for plants, extract water and nutrients from soil, and ...
... Since the terrorist attacks of 2001, the Bureau of ... water and power to millions of people, has invested ... protect its facilities and personnel, says a new report ... better communication among security staff, regional and area office ...
... WI, AUGUST 18, 2008 Serpentine soils contain highly ... farming. Successful management of serpentine soils requires accurate measurement ... in the Soil Science Society of America Journal ... accurately measure calcium content in serpentine soils. To ...
Cached Biology News:Getting to the root of the matter 2National Research Council report on security at federally managed dams 2National Research Council report on security at federally managed dams 3
(Date:7/22/2014)... Dr. Williams says, “Bush has joined ... that the greatest health care system in the world ... deadly while trying to serve the public. Unfortunately, Bush ... transform an enormous system that none of them can ... continuing series of Open Letters ( http://is.gd/wdU2CM ) provides ...
(Date:7/21/2014)... Applying just the right amount of tension to a ... metallic conductor to an insulator, according to Rice University ... a hard-to-make, one-dimensional chain of carbon atoms -- by ... in ways that engineers might find useful for mechanically ... Rice theoretical physicist Boris Yakobson and his colleagues appears ...
(Date:7/21/2014)... , July 21, 2014  Mike Patterson, CEO ... $1.6 million in Series Seed B funding to ... sensors for the life science, defense, intelligence, and ... Partners led the round and was joined by ... Said Patterson , "This round of funding ...
(Date:7/20/2014)... Richland, Wash. -- When nuclear fuel gets recycled, the ... uranium in rock contaminates basements with the related gas ... these gases, and research appearing July 20 in ... let the gases in but not out. , ... or hazardous radioactive elements from nuclear fuel or air ...
Breaking Biology Technology:Dr. Ira Williams Asks What’s Wrong With Jonathan Bush’s Book, Where Does It Hurt? 2Carbyne morphs when stretched 2Carbyne morphs when stretched 3Global Graphene Manufacturing Leader, Graphene Frontiers, Receives Series Seed B Funding To Assure Production Of The Next Generation Of Biological And Chemical Sensor Technology 2A noble gas cage 2A noble gas cage 3
... N.J., Nov. 4 Cambrex,Corporation (NYSE: CBM ) reports third ... (Logo: http://www.newscom.com/cgi-bin/prnh/20000613/CAMBREXLOGO ), -- Sales increased ... third quarter 2007. -- Adjusted EBITDA for the quarter was ... $9.7 million last year. -- Debt, net of cash was ...
... - Oncolytics Biotech Inc.,("Oncolytics") (TSX:ONC, NASDAQ:ONCY) announced ... pursue a pivotal (Phase II/III) randomized trial ... refractory,patients with head and neck cancers. The ... by the Company,s Board of Directors from ...
... Md., Nov. 4 PharmAthene, Inc.,(NYSE Alternext US: ... and chemical threats, announced today,that David P. Wright, ... at the Rodman and Renshaw 10th Annual Healthcare ... beginning at 2:25 p.m. E.T. in the,Holmes II ...
Cached Biology Technology:Cambrex Reports Third Quarter 2008 Results 2Cambrex Reports Third Quarter 2008 Results 3Cambrex Reports Third Quarter 2008 Results 4Cambrex Reports Third Quarter 2008 Results 5Cambrex Reports Third Quarter 2008 Results 6Cambrex Reports Third Quarter 2008 Results 7Cambrex Reports Third Quarter 2008 Results 8Cambrex Reports Third Quarter 2008 Results 9Cambrex Reports Third Quarter 2008 Results 10Cambrex Reports Third Quarter 2008 Results 11Cambrex Reports Third Quarter 2008 Results 12Cambrex Reports Third Quarter 2008 Results 13Cambrex Reports Third Quarter 2008 Results 14Oncolytics Biotech Inc. Announces Decision to Pursue Phase II/III Pivotal Clinical Trial 2