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:6/16/2016)... SAN FRANCISCO , June 16, 2016 /PRNewswire/ ... Market size is expected to reach USD ... report by Grand View Research, Inc. Technological proliferation ... and banking applications are expected to drive the ... ) , The development of ...
(Date:6/7/2016)... , June 7, 2016  Syngrafii Inc. ... a business relationship that includes integrating Syngrafii,s patented ... branch project. This collaboration will result in greater ... the credit union, while maintaining existing document workflow ... http://photos.prnewswire.com/prnh/20160606/375871LOGO ...
(Date:6/2/2016)... June 2, 2016 Perimeter Surveillance ... Unmanned Systems, Physical Infrastructure, Support & Other Service  ... visiongain offers comprehensive analysis of the global ... will generate revenues of $17.98 billion in 2016. ... Inc, a leader in software and hardware technologies for ...
Breaking Biology News(10 mins):
(Date:12/2/2016)... ... December 01, 2016 , ... ... the value of DNA microarray comparative genomic hybridization (array CGH) for HER2 ... Cancer Symposium. Using molecular test results from tumors with previously documented positive, ...
(Date:12/2/2016)... ... December 01, 2016 , ... DrugDev believes the only way ... beautiful technology experience. All three tenets were on display at the 2nd Annual DrugDev ... over 40 sponsor, CRO and site organizations to discuss innovation and the future of ...
(Date:12/2/2016)...   SurePure, Inc. (OTCQB: SURP) a global ... has concluded an agreement with Tamarack Biotics under which ... to acquire units of the Company,s patented photopurification technology ... Concurrently with the option, SurePure has ... will seek regulatory approvals in the United ...
(Date:11/30/2016)...  GenomOncology today announced the appointment of Joshua F. ... Dr. Coleman will oversee clinical content development and ... The GenomOncology software suite empowers molecular pathologists with a seamless ... decision support, from quality control through reporting. ... , , ...
Breaking Biology Technology: