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!
When fat cells change their colour
28.10.2016 | Albert-Ludwigs-Universität Freiburg im Breisgau
Aquaculture: Clear Water Thanks to Cork
28.10.2016 | Technologie Lizenz-Büro (TLB) der Baden-Württembergischen Hochschulen GmbH
Physicists from the University of Würzburg have designed a light source that emits photon pairs. Two-photon sources are particularly well suited for tap-proof data encryption. The experiment's key ingredients: a semiconductor crystal and some sticky tape.
So-called monolayers are at the heart of the research activities. These "super materials" (as the prestigious science magazine "Nature" puts it) have been...
Ultrafast lasers have introduced new possibilities in engraving ultrafine structures, and scientists are now also investigating how to use them to etch microstructures into thin glass. There are possible applications in analytics (lab on a chip) and especially in electronics and the consumer sector, where great interest has been shown.
This new method was born of a surprising phenomenon: irradiating glass in a particular way with an ultrafast laser has the effect of making the glass up to a...
Terahertz excitation of selected crystal vibrations leads to an effective magnetic field that drives coherent spin motion
Controlling functional properties by light is one of the grand goals in modern condensed matter physics and materials science. A new study now demonstrates how...
Researchers from the Institute for Quantum Computing (IQC) at the University of Waterloo led the development of a new extensible wiring technique capable of controlling superconducting quantum bits, representing a significant step towards to the realization of a scalable quantum computer.
"The quantum socket is a wiring method that uses three-dimensional wires based on spring-loaded pins to address individual qubits," said Jeremy Béjanin, a PhD...
In a paper in Scientific Reports, a research team at Worcester Polytechnic Institute describes a novel light-activated phenomenon that could become the basis for applications as diverse as microscopic robotic grippers and more efficient solar cells.
A research team at Worcester Polytechnic Institute (WPI) has developed a revolutionary, light-activated semiconductor nanocomposite material that can be used...
14.10.2016 | Event News
14.10.2016 | Event News
12.10.2016 | Event News
28.10.2016 | Power and Electrical Engineering
28.10.2016 | Physics and Astronomy
28.10.2016 | Life Sciences