Navigation Links
Apathetic aphids with attitude become easier prey for ladybugs
Date:8/6/2010

ITHACA, N.Y. Apathetic aphids which become accustomed to ignoring genetically engineered chemical alarms in plants and alarms sent by fellow aphids become easy prey for ladybugs. That's good news for farmers, according to researchers at the Boyce Thompson Institute for Plant Research and Cornell University. (Proceedings of the National Academy of Sciences, Aug. 3, 2010.)

The study, "Alarm pheromone habituation in Myzus persicae has fitness consequences and causes extensive gene expression changes," was authored by Georg Jander, associate scientist at the Boyce Thompson Institute (BTI) located on the Cornell campus, and Robert Raguso, Cornell professor of neurobiology and behavior. Co-authors also include Martin de Vos, a former BTI post-doctoral researcher; Wing Yin Cheng, a former undergraduate researcher in Jander's lab; and Holly Summers, a graduate student in Raguso's lab.

Under normal circumstances, when a ladybug captures and bites into an aphid, the victim releases an alarm pheromone called beta-farnesene, prompting nearby aphids to walk away or drop off the plant. When aphids are raised on plants genetically engineered to emit beta-farnesene, they become accustomed to the chemical and no longer respond to it even when a predator is present making them easy prey.

Aphids reared continuously on genetically engineered Arabidopsis thaliana plants that produced beta-farnesene became habituated to the pheromone within three generations and no longer responded to the compound. In the absence of predators, the habituated aphids produce more progeny, likely because they expended less energy on running away and focus more on feeding compared to normal aphids. However, said Jander: "When we put ladybugs into the mix, the ones that are habituated to the alarm pheromone get eaten more." Anxious aphids those actually responding to pheromone alarms had a higher survival rate in the presence of predators.

Genetically
'/>"/>

Contact: Blaine Friedlander
bpf2@cornell.edu
607-254-8093
Cornell University
Source:Eurekalert

0

GOOD

Page: 1 2

Related biology news :

1. Aphids evolved special, surprising talents
2. Discovering soybean plants resistant to aphids and a new aphid
3. Epidemic played large role in shift of attitudes on abortion, author says
4. Fish with attitude: Some like it hot
5. Fish with attitude: Some like it hot
6. Attitudes towards assisted reproduction and preimplantation genetic diagnosis
7. Could genetic research awaken racist attitudes?
8. New insights into how stem cells determine what tissue to become
9. Sea snail saliva may become new treatment for most severe pain
10. Fungus among us could become non-food source for biodiesel production
11. Fish facing reflections become feisty but fearful
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/22/2013)... engineering drastically reduces the time and effort needed ... of biotechnology, scientists are reporting. Published in the ... paves the way for more rapid development of ... other activities. , Keith Shearwin and colleagues explain ... genetic material DNA into a bacterium,s genome is ...
(Date:5/22/2013)... feared Legionella pneumophila bacteria is responsible for ... In order to infect us, this pathogen has developed ... go unnoticed in our cells, thus avoiding these acting ... Basque biosciences research centre, CIC bioGUNE, in which teams ... USA and the National Supercomputation Centre in Barcelona (BSC) ...
(Date:5/22/2013)... in the biodiversity of pollinating insects and wild plants ... study. , Researchers led by the University of Leeds ... evidence of dramatic reductions in the diversity of ... 1950s and 1980s. , But the picture brightened markedly ... biodiversity losses among bees, hoverflies and wild plants. ...
Breaking Biology News(10 mins):Mechanism discovered which aids Legionella to camouflage itself in the organism 2Encouraging signs for bee biodiversity 2Encouraging signs for bee biodiversity 3
... fragments into a genome sequence that scientists can interpret is ... don,t have the box and have no idea what the ... DNA sequences of related organisms can be used to guide ... related any two sequences are to one another. For example, ...
... Radiology," the first in a series of annual ... invasive medicine, was recently released by Society of ... radiology is expanding, and it has become increasingly ... assimilate the volume of literature required to remain ...
... Scientists at the Salk Institute for Biological Studies and ... that play a role in the production of seed ... chemicals and biofuels. Scoring a rare scientific hat ... thale cress plants ( Arabidopsis thaliana ) that regulate ...
Cached Biology News:Researchers look to relatives for clues in quest to develop sources of bioenergy 2Researchers look to relatives for clues in quest to develop sources of bioenergy 3'Updates in Interventional Radiology' accents emerging trends, practice growth 2Discovery of plant proteins may boost agricultural yields and biofuel production 2Discovery of plant proteins may boost agricultural yields and biofuel production 3
(Date:5/22/2013)... 22, 2013 Cambridge Semantics was ... week’s “Data Demonstration Day” on Capitol Hill, hosted by The ... Google, Microsoft and others to showcase how innovative data management ... and Transparency Act (DATA Act). , Originally introduced in 2011 ... and Sen. Mark Warner (D-VA ), the ...
(Date:5/22/2013)... NEW ORLEANS , May 22, 2013 ... of regenerative medicine, presented new data generated in collaboration ... (a leading health economics consultancy) demonstrating the significant healthcare ... and venous leg ulcers (VLU) place upon the US ... research, which reveal annual costs of up to $15 ...
(Date:5/22/2013)... 22, 2013 Express Diagnostics Int’l, ... Ltd are pleased to announce a sponsorship agreement ... and New Zealand distributor of DrugCheck® onsite testing devices, ... participated in the Austin 400 May 17-19 in Austin, ... agreement that involves each car of the Erebus Motorsport ...
(Date:5/22/2013)... , May 22, 2013  Moderna Therapeutics, the pioneering ... modality to enable the in vivo production ... Reynders will join Moderna in early July ... Reynders is a proven leader in the design and ... development, from discovery to translation, clinical operations and commercial ...
Breaking Biology Technology:Cambridge Semantics Underscores Need for Smart Data during “Data Demonstration Day” on Capitol Hill 2Organogenesis Presents Findings from Groundbreaking Research Highlighting the Healthcare Resource and Economic Burden of Venous Leg Ulcers and Diabetic Foot Ulcers 2Organogenesis Presents Findings from Groundbreaking Research Highlighting the Healthcare Resource and Economic Burden of Venous Leg Ulcers and Diabetic Foot Ulcers 3Organogenesis Presents Findings from Groundbreaking Research Highlighting the Healthcare Resource and Economic Burden of Venous Leg Ulcers and Diabetic Foot Ulcers 4Australian Distributor of Express Diagnostics Signs Sponsorship Agreement with V8 Supercar Team 2Industry Leader John Reynders Joins Moderna Therapeutics as Chief Information Officer 2Industry Leader John Reynders Joins Moderna Therapeutics as Chief Information Officer 3
... 29, 2012  Dyadic International, Inc. ("Dyadic") (OTC Pink: ... discovery, development, manufacture and sale of enzyme and ... biopharmaceutical industries, announced today that it has entered ... a leading global provider of nutritional ingredient solutions ...
... the Wyss Institute for Biologically Inspired Engineering at Harvard ... for inducing magnetic sensitivity in an organism that is ... used to magnetize a variety of different cell types ... appear in today,s issue of PLoS Biology . ...
... 28, 2012  Thomson Reuters announced the availability of ... speeds access to critical life sciences research and ... platform, Thomson Reuters Cortellis. ... application programming interfaces (APIs) to enhance the research ...
Cached Biology Technology:Dyadic International Partners with Leading Provider of Nutritional Ingredient Solutions for Production of Food Enzymes 2Dyadic International Partners with Leading Provider of Nutritional Ingredient Solutions for Production of Food Enzymes 3New 'magnetic yeast' marks step toward harnessing Nature's magnetic capabilities 2New 'magnetic yeast' marks step toward harnessing Nature's magnetic capabilities 3Thomson Reuters Cortellis Drives Drug Discovery and Development With Powerful New Web Services 2
... LUMIstar OPTIMA is a fully automated ... for the widest possible range of ... Reporter gene assays luciferase, -galactosidase, gene ... esters, dioxetanes..) Luminescent Immunoassays ...
... dispensers save space and organize gloves, ... garb. They are the perfect benchtop ... in labs, processing and manufacturing. Clear ... the particles they attract. Open-slot design ...
... These handy dispensers save space ... hats, and other garb. They are ... small parts used in labs, processing ... static charges and the particles they ...
... except that it uses a deep-UV deuterium bulb, ... comes with a shutter (controlled via a TTL ... Light Source produces a powerful, stable output from ... light source are available, providing a wavelength range ...
Biology Products: