HOME >> BIOLOGY >> NEWS
Why some aphids can't stand the heat

For pea aphids, the ability to go forth and multiply can depend on a single gene, according to new research.

An overheated aphid with a mutation in that gene can't reproduce.

The gene isn't even in the insect -- it's in tiny symbiotic bacteria housed inside special cells inside the aphid.

"It's the first time a mutation in a symbiont has been shown to have a huge impact on host ecology," said Nancy A. Moran, Regents' Professor of ecology and evolutionary biology at The University of Arizona in Tucson. "One version of the gene is good if the aphids experience heat, and the other version is good if they are in cool conditions."

Neither organism can survive on its own. The Buchnera aphidicola bacteria, which cannot live on their own, supply the aphids, Acyrthosiphon pisum, with essential nutrients.

UA researchers Helen E. Dunbar, a senior research specialist, Alex C. C. Wilson, now at the University of Miami in Coral Gables, Fla., Nicole R. Ferguson, a member of UA's Undergraduate Biology Research Program, and Moran are publishing their findings in the May 2007 issue of PLoS Biology.

Their research paper is titled "Aphid Thermal Tolerance is Governed by a Point Mutation in Bacterial Symbionts." The research was funded by the National Science Foundation and the National Institutes of Health. Howard Hughes Medical Institute provides funding for the UA's Undergraduate Biology Research Program.

Aphids reproduce asexually, so juveniles are clones of their mothers. The symbiotic bacteria are passed on from mother to child. Moran's lab maintains colonies of aphids, each descended from a single ancestral aphid mother.

The scientists found the heat-intolerant gene by accident.

Wilson, then a UA postdoctoral fellow in Moran's lab, was testing the response of some aphid and bacterial genes from one aphid colony. The bacteria's ibpA gene codes for a protein, called a heat-shock protei
'"/>

Contact: Mari N. Jensen
mnjensen@email.arizona.edu
520-626-9635
University of Arizona
19-Apr-2007


Page: 1 2 3

Related biology news :

1. Salivating aphids and dynamic proteins
2. Alarm pheromone causes aphids to sprout wings
3. Chronically sleep deprived? You cant make up for lost sleep
4. Museum-fueled global study shows you cant judge biodiversity by its bird
5. You cant scare people into getting fit or going green
6. When nerve cells cant make contact
7. Empty nesters cant let go
8. You cant rely on firearms forensics
9. The reason why antiviral therapy cant annihilate HIV infection, and what to do about it
10. Plankton can run, but cant hide from basking sharks
11. Scientists find viruses cant stick to sea bugs in the dark

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:4/5/2017)... , April 5, 2017 Today ... announcing that the server component of the HYPR platform ... for providing the end-to-end security architecture that empowers biometric ... HYPR has already secured over 15 million users ... including manufacturers of connected home product suites and physical ...
(Date:3/30/2017)... The research team of The Hong Kong ... identification by adopting ground breaking 3D fingerprint minutiae recovery and matching ... and accuracy for use in identification, crime investigation, immigration control, security ... ... A research team led by ...
(Date:3/24/2017)... , March 24, 2017 The Controller General of ... Mr. Abdulla Algeen have received the prestigious international IAIR Award ... Continue Reading ... ... and Deputy Controller Abdulla Algeen (small picture on the right) have received ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... San Diego, CA (PRWEB) , ... ... ... BioInformatics (https://www.onramp.bio/ ) has launched Rosalind™, the first-ever genomics analysis platform ... eliminating all bioinformatics complexity. Named in honor of pioneering researcher Rosalind Franklin, ...
(Date:10/11/2017)... ... 11, 2017 , ... The CRISPR-Cas9 system has ... and avoiding the use of exogenous expression plasmids. The simplicity of programming this ... gain-of-function studies. , This complement to loss-of-function studies, such as with RNAi ...
(Date:10/11/2017)... USA (PRWEB) , ... October 11, 2017 , ... ComplianceOnline’s ... take place on 7th and 8th June 2018 in San Francisco, CA. The Summit ... as well as several distinguished CEOs, board directors and government officials from around the ...
(Date:10/11/2017)... BioMarketing, a leading provider of patient support solutions, has announced ... network, which will launch this week. The VMS CNEs will ... to enhance the patient care experience by delivering peer-to-peer education ... professionals to help women who have been diagnosed and are ... ...
Breaking Biology Technology:
Cached News: