HOME >> BIOLOGY >> NEWS
The bee that would be queen

TEMPE, Ariz. -- A team of researchers from Arizona State University, Purdue University and the Norwegian University of Life Sciences has discovered evidence that honeybees have adopted a phylogenetically old molecular cascade TOR (target of rapamycin), linked to nutrient and energy sensing and put it to use in caste development.

The findings, published in the June 6 edition of PLoS ONE, the online, open-access journal from the Public Library of Science, show that TOR is directly linked in the nutrient-induced development of female honeybees into either queens, the caste of large dominant egg-layers, or into workers, the caste of small helpers.

Our study provides three independent lines of evidence gene expression, pharmacology and RNA interference (RNAi) that converge on one conclusion: selection can have acted on the TOR pathway to enable two distinct phenotypes to evolve in the bee, says Gro Amdam, an assistant professor in ASUs School of Life Sciences.

The researchers found that queen-fate can be blocked, and that workers develop, when TOR activity is reduced during development.

Amdam notes that while social insect queens and workers have been subjects of great fascination for centuries, and scientific study for the last few decades, the gene regulatory pathways responsible for determining caste fate has remained largely unknown. This is the first time a genetic pathway has been identified to control these two phenotypes, says Amdam, who heads social insect studies in laboratories at both ASU and the Norwegian University Department of Animal and Aquacultural Sciences.

The finding that queens and workers can emerge from an old pathway that controls tissue growth in a variety of species, including humans, helps us understand what evolution builds on when it produces seemingly radically new phenotypes, Amdam says.


'"/>

Contact: Margaret Coulombe
Margaret.coulombe@asu.edu
480-787-8934
Arizona State University
5-Jun-2007


Page: 1

Related biology news :

1. AAAS analysis finds Congress would add billions to FY 2008 R&D investment
2. Smallpox outbreak: How long would it take for vaccines to protect people? Would it work?
3. 2-protein team would be lost without each other
4. Healthy coastal wetlands would adapt to rising oceans
5. Is it ethical for scientists to do research abroad that would be forbidden at home?
6. Designer babies - what would you do for a healthy baby?
7. New discovery: If it werent for this enzyme, decomposing pesticide would take millennia
8. Proposal would allow wild animals to roam North America
9. Cookbook recipes would cure disease with nontoxic DNA delivery systems
10. Passage of Marin County GMO ban would encourage widespread use of harsh pesticides
11. Passage of GMO ban in San Luis Obispo would encourage use of harsh pesticides

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


(Date:7/20/2017)... July 20, 2017 Delta (NYSE: DAL ) customers ... Delta aircraft at Reagan Washington National Airport (DCA). ... Delta launches biometrics to board aircraft ... Delta,s biometric boarding pass ... is now integrated into the boarding process to allow eligible Delta ...
(Date:5/16/2017)... TEANECK, N.J. , May 16, 2017  Veratad ... leading provider of online age and identity verification solutions, ... the K(NO)W Identity Conference 2017, May 15 thru May ... Ronald Regan Building and International Trade Center. ... across the globe and in today,s quickly evolving digital ...
(Date:4/18/2017)... SUNNYVALE, Calif. , April 18, 2017  Socionext Inc., a ... prototype of a media edge server, the M820, which features the ... face recognition software provided by Tera Probe, Inc., will be showcased ... and at the NAB show at the Las Vegas ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... , ... October 11, 2017 , ... ... the implantation and pregnancy rates in frozen and fresh in vitro fertilization ... progesterone and maternal age to IVF success. , After comparing the results from ...
(Date:10/10/2017)... , ... October 10, 2017 , ... ... Center’s FirstHand program has won a US2020 STEM Mentoring Award. Representatives of the ... for Excellence in Volunteer Experience from US2020. , US2020’s mission is to change ...
(Date:10/10/2017)... CALIFORNIA (PRWEB) , ... October 10, 2017 , ... ... technological innovation and business process optimization firm for the life sciences and healthcare ... BoxWorks conference in San Francisco. , The presentation, “Automating GxP Validation for ...
(Date:10/9/2017)... ... ... At its national board meeting in North Carolina, ARCS® Foundation ... Physics and Astronomy, has been selected for membership in ARCS Alumni Hall of ... Breakthrough Prize in Fundamental physics for the discovery of the accelerating expansion of the ...
Breaking Biology Technology:
Cached News: