While promising the possibility of hardier crops and a larger, more robust food supply for the world, worries continue over the effect genetically engineered plants might have on the environment. One fear is over the movement of altered genes from domesticated populations to the wild and the effect of these "escaped" genes on ecosystems. In a study published in the December issue of Ecological Applications, Charity Cummings (University of Kansas), Helen Alexander (University of Kansas), Allison Snow (Ohio State University), Loren Riesenberg (University of Indiana) and colleagues tracked the movement of three specific alleles, or genes, in wild and domesticated sunflowers to determine how often and to what extent these plant populations will hybridize and pass specific genes on to the next generation.
Domesticated sunflowers are commonly grown in the plains states of the US and California, and the wild sunflower is a native, annual weed that occurs throughout most of the US. Sunflower and other crops are currently under development for a variety of traits to make them more resistant to fungi and pests. Currently wild sunflowers pose a problem for farmers as a weed in domesticated sunflower crops. These already weedy plants could cause even more damage if a gene for insect resistance crossed into the wild population from the cultivated sunflowers.
Many undergraduate biology students conduct an experiment using daphnia, crickets or other small invertebrates, measuring the number of offspring produced, how many survive and several other factors to understand survivorship and other population concepts. The scientists used a similar approach to predict the likelihood of genes from hybrid crops entering wild populations and staying in the wild sunflowers. Starting with a hundred wild plants and a hundred crop-wild hybrids, the scientists set up three plots and observed the sunflowers for two growing seasons, collecting the seeds to analyze the protein and gene flow between generations of plants.
Annie Drinkard | EurekAlert!
Cryo-electron microscopy achieves unprecedented resolution using new computational methods
24.03.2017 | DOE/Lawrence Berkeley National Laboratory
How cheetahs stay fit and healthy
24.03.2017 | Forschungsverbund Berlin e.V.
Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
20.03.2017 | Event News
14.03.2017 | Event News
07.03.2017 | Event News
24.03.2017 | Materials Sciences
24.03.2017 | Physics and Astronomy
24.03.2017 | Physics and Astronomy