HOME >> BIOLOGY >> NEWS
Flies may taste bitter better, first map of insect 'tongue' reveals

speculates. For example, he said, a fruit fly landing on spoiled apples infected with different bacteria could select those less likely to cause harm when ingested.

In mammals, taste receptors on the tongue can detect five primary flavors: sweet, bitter, sour, salty and umami -- a savory or meaty taste. The sense of taste plays an important role in mammals' decisions about what to eat and what to avoid, and scientists have identified many of the underlying genes and their functions.

In the Drosophila fruit fly, taste receptors are found all over the insect body -- on taste bristles and pegs at the tip of the insect labellum, and in clusters of taste cells in the pharynx. Still other taste sensors are found on the fly's legs and along the margin of the wings. Each tasting bristle or peg contains chemosensory nerve cells bearing receptor proteins that respond to particular compounds.

Geneticists have proposed that many if not most of the tasting abilities in the insect are enabled by receptor proteins coded for by the gustatory receptor (Gr) gene family, consisting of 60 related genes, Amrein said. "But little is known about how insects examine food and decide what to eat," he added.

The team's earlier research indicated that the receptor produced by one Gr gene detects pheromones important in sexual behavior and mating. A research group at another university also has found that a second receptor senses the sugar trehalose, a metabolic component of yeast and major part of the fruit fly diet.

In the current study, Amrein's team mapped the location on the fly's labellum and body of cells that produce proteins encoded by eight of the Gr genes, including the earlier identified trehalose receptor.

The researchers linked individual taste receptor genes with their functions by disabling specific taste cells and observing the feeding behavior of the resulting mutant flies. For example, flies that lacked taste cells containing th
'"/>

Contact: Kendall Morgan
kendall.morgan@duke.edu
919-684-4148
Duke University Medical Center
21-Jun-2004


Page: 1 2 3

Related biology news :

1. Flies offer clues to anesthesia-resistant memory
2. Scientists, Using Flies, Trace Genetic Links To Cancer
3. For Fruit Flies, Finding The Right Mate May Mean Offspring With A Longer Life Span, According To New Study
4. Two Modes Of Aging Discovered In Fruit Flies
5. Scientists Discover Two Modes Of Aging In Fruit Flies
6. Monogamy Has Its Rewards For Flies
7. UF Researchers Innovative Fence Helps Control Sand Flies
8. Drunken Fruit Flies Reveal Molecular Pathway Regulating Sensitivity To Alcohol
9. Fruit Flies May Shed Light On Cocaine Addiction
10. Two Parasitic Wasps Show Promise For Controlling Pest Flies
11. Malnutrition Impacts Longevity Of Females More Than Males And Shows Gender Differences In Fruit Flies

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


(Date:8/14/2019)... ... August 14, 2019 , ... Carterra® ... they have opened a Customer Experience Center (CEC) and office in Munich, Germany. ... office. , The Munich CEC will be a place for researchers throughout Europe ...
(Date:8/14/2019)... ... August 13, 2019 , ... ... of Molecular Pathology, Institute of Cancer Research (ICR) in a live webinar ... about the process of biomarker and companion diagnostic development including machine learning approaches ...
(Date:8/6/2019)... ... August 06, 2019 , ... VetStem ... clinical, regulatory and GMP manufacturing experience. In November it spun out a ... extensive regulatory experience and one of the first cGMP cell manufacturing facilities ...
Breaking Biology News(10 mins):
(Date:8/23/2019)... ... August 22, 2019 , ... An upcoming ... is scheduled to broadcast 4Q/2019. Check your local listings for more information. , ... generic drug delivery. Focusing on therapeutics for children and the elderly, viewers will ...
(Date:8/7/2019)... Ohio (PRWEB) , ... August 07, 2019 , ... Locus ... a breakthrough line of soil amendments (soil “probiotics”), including Rhizolizer ® , which ... a year—the largest impact any approach has offered to date. Results from the treatment ...
(Date:8/4/2019)... MINNEAPOLIS (PRWEB) , ... August 02, 2019 , ... Cirtec ... minimally invasive devices, today announced that it has begun construction on a 30,000 sq. ... about 15 miles from San Jose. , The facility, which is expected to ...
(Date:7/19/2019)... , ... July 18, 2019 , ... ... as “Ravi Everest,” will be joining forces with California-based charity Coalition Duchenne for ... July 20-22nd. Coalition Duchenne raises awareness and funding for Duchenne muscular dystrophy and ...
Breaking Biology Technology:
Cached News: