Navigation Links
The risks and benefits of using poplars for biofuels
Date:10/14/2010

A potential solution for global energy demands is the use of Poplar, a fast-growing tree with high yields, for biofuels. To get the most out of Poplar plantations, varieties that are the best fit for the conditionsones with disease resistance or higher yields, for exampleare desired. But do these plantations of new, non-native (exotic) species impact nearby native populations of Poplar? In particular, is the genetic makeup of the native populations being altered by interactions with the exotic species?

In the October issue of the American Journal of Botany (http://www.amjbot.org/cgi/reprint/97/10/1688), Dr. Nathalie Isabel and colleagues tackled these issues by conducting a scientific risk assessment on the introduction of exotic species of Poplar (complex hybrids primarily made up of Populus nigra, P. trichocarpa, and P. maximowiczii) and the resulting impact on three native populations of Poplar species (P. deltoides and P. balsamifera) at two different locations over 3 years.

The researchers monitored gene flowthe passing of genetic information (alleles) between two populationsresulting from spontaneous hybridization between exotic and native populations. By looking for specific DNA signatures, called SNPs, they determined who the father species was for individual offspring. These paternity tests revealed that complex patterns of hybridization were occurring. All five species were capable of producing hybrids with the native populations, but when the native population was large, the native species were more successful; native species represented more than 95% of the parental alleles.

After the initial hybridization, the new genetic makeup may persist in the population through the generations (introgression) or be lost over time. The long-term effects of hybridization "depend on the ability of the hybrids to become established in natural forests and to subsequently reproduce," Isabel said. "Thus, there is a need to monitor multiple steps of the introgression process for poplars."

The risk of introgression is likely to be higher for small populations of native Poplars (ex: in disturbed agricultural landscapes) compared to more densely populated areas. This has important implications for further steps (ex: modeling introgression) and the development of regulatory guidelines for the commercial release of plants with novel traits, and for other cases where the rate of gene flow from plantations into natural populations should be kept to a minimum.


'/>"/>

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

Related biology news :

1. Risks in multiple pregnancies
2. Ben-Gurion University of the Negev researchers identify risks of hypertension in young adults
3. Gender-specific disease risks start in the womb
4. Payment Default Risks Remain a Crucial Issue for Businesses Across Europe
5. $3.7 million trial uses genes to balance risks, benefits of blood thinner
6. To close achievement gap, US must address major health risks for urban minority youth, study finds
7. Epigenetics could help researchers determine any risks associated with low-dose radiation
8. Crucial differences found among Latino populations facing heart disease risks
9. Report documents the risks of giant invasive snakes in the US
10. Risks involved with transgenic fish
11. Preimplantation genetic diagnosis may pose neurological risks
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:8/23/2017)... general public,s help is being enlisted in what,s thought to be the ... the human body –and are believed to affect health.  ... The Microbiome Immunity Project is the largest study to ... The project's goal is to help advance scientific knowledge of the role ... The ...
(Date:7/20/2017)... -- Delta (NYSE: DAL ) customers now can use fingerprints ... Washington National Airport (DCA). ... Delta launches biometrics to board aircraft at Reagan Washington National ... Delta,s biometric boarding pass experience that launched ... into the boarding process to allow eligible Delta SkyMiles Members who are ...
(Date:6/23/2017)... ARMONK, N.Y. and ITHACA, N.Y. ... IBM ) and Cornell University, a leader in dairy ... combined with bioinformatics designed to help reduce the chances ... breaches. With the onset of this dairy project, Cornell ... the Consortium for Sequencing the Food Supply Chain, a ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... The ... three Winners and six Finalists of the 2017 Blavatnik Regional Awards for Young ... Family Foundation and administered by the New York Academy of Sciences to honor ...
(Date:10/12/2017)... ... October 12, 2017 , ... ... analysis platform specifically designed for life science researchers to analyze and interpret ... Rosalind Franklin, who made a major contribution to the discovery of the ...
(Date:10/11/2017)... , ... October 11, 2017 , ... ... announced today it will be hosting a Webinar titled, “Pathology is going digital. ... Associates , on digital pathology adoption best practices and how Proscia improves lab ...
(Date:10/11/2017)... (PRWEB) , ... October 11, 2017 , ... ... Administration (FDA) has granted orphan drug designation to SBT-100, its novel anti-STAT3 (Signal ... the treatment of osteosarcoma. SBT-100 is able to cross the cell membrane and ...
Breaking Biology Technology: