HOME >> BIOLOGY >> NEWS
News tips from the Journal of Neuroscience

A fly pheromone receptor

Tal Soo Ha and Dean P. Smith

Insects use pheromone signaling for all sorts of interesting behaviors, yet only a single volatile pheromone has been identified in Drosophila, the lipid 11-cis-vaccenyl acetate (VA). Upon release by males, VA induces aggregation behavior in both sexes. This week, Ha and Smith identify VA's molecular target on trichoid sensilla, located on the ventrallateral surface of the antenna. VA activates olfactory neurons on T1-type sensilla. The authors screened the Drosophila odorant receptor (Or) gene family in flies lacking functional T1 sensilla. One gene, Or67d was reduced or absent in the mutants. Misexpression of Or67d in olfactory neurons of non-T1 sensilla conferred sensitivity to VA. LUSH, an extracellular protein expressed by sensillar lymph cells, is required for T1 sensitivity to VA and is also expressed in non-T1 sensilla. The lush1 mutation eradicated VA sensitivity in transgenic flies misexpressing Or67d. Thus, VA sensitivity requires both Or67d and LUSH.


Visualizing a netrin gradient

Timothy E. Kennedy, Hao Wang, Wallace Marshall, and Marc Tessier-Lavigne

Chemotropic guidance cues can act through gradients formed by graded expression levels or graded distribution. This week, Kennedy et al. visualized the netrin-1 gradient that guides commissural axons within the developing spinal cord. The authors generated antibodies to visualize netrin-1 and netrin-2 in the developing chick spinal cord. At the time when commissural axons began to extend, netrin-1 immunoreactivity was found not only in the floor plate where it is expressed by floor plate cells, but also in the ventral neural epithelium and dorsal spinal cord. Netrin-2 in contrast had a much more restricted pattern limited to neural epithelial cells that express it in the ventral spinal cord, and it was expressed at much lower lev
'"/>

Contact: Sara Harris
sharris@sfn.org
202-962-4000
Society for Neuroscience
22-Aug-2006


Page: 1 2 3

Related biology news :

1. News tips from the Journal of Neuroscience
2. News tips from the Journal of Neuroscience
3. News tips from the Journal of Neuroscience
4. News tips from the Journal of Neuroscience
5. Tips from the Journals of the American Society for Microbiology
6. Journalists can register now for ECCO 14 -- the European Cancer Conference
7. Journal of Alzheimers Disease achieves significant impact factor
8. News tips from the Journal of Neuroscience
9. Highlights from the July 2007 Journal of the American Dietetic Association
10. News tips from the Journal of Neuroscience
11. Journal of Nuclear Medicines impact grows, remains consistently high over past 5 years

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


(Date:6/14/2017)... (NYSE: IBM ) is introducing several innovative partner startups ... collaboration between startups and global businesses, taking place in ... nine startups will showcase the solutions they have built with ... France is one of the ... percent increase in the number of startups created between 2012 ...
(Date:5/16/2017)... 16, 2017   Bridge Patient Portal , ... MD EMR Systems , an electronic medical ... GE, have established a partnership to build an ... the GE Centricity™ products, including Centricity Practice Solution ... These new integrations will allow healthcare delivery ...
(Date:4/19/2017)... New York , April 19, 2017 ... competitive, as its vendor landscape is marked by the ... the market is however held by five major players ... Safran. Together these companies accounted for nearly 61% of ... of the leading companies in the global military biometrics ...
Breaking Biology News(10 mins):
(Date:10/12/2017)... ... October 12, 2017 , ... ... platform specifically designed for life science researchers to analyze and interpret datasets, ... Franklin, who made a major contribution to the discovery of the double-helix ...
(Date:10/11/2017)... ... ... Personal eye wash is a basic first aid supply for any work environment, but most ... you rinse first if a dangerous substance enters both eyes? It’s one less decision, and ... unique dual eye piece. , “Whether its dirt and debris, or an acid or alkali, ...
(Date:10/11/2017)... , Oct. 11, 2017  VMS BioMarketing, a leading ... a nationwide oncology Clinical Nurse Educator (CNE) network, which will ... need for communication among health care professionals to enhance the ... nurses, office staff, and other health care professionals to help ... breast cancer. ...
(Date:10/11/2017)... ... October 11, 2017 , ... ... implantation and pregnancy rates in frozen and fresh in vitro fertilization (IVF) ... and maternal age to IVF success. , After comparing the results from the ...
Breaking Biology Technology:
Cached News: