Ignell, Rickard
- Institutionen för växtskyddsbiologi, Sveriges lantbruksuniversitet
Sammanfattning
Transfer and processing of olfactory information in the antennal lobe of Drosophila relies primarily on neurotransmitters such as acetylcholine and GABA, but novel studies also implicate a neuropeptide: the Drosophila tachykinin (DTK). DTK is expressed in local interneurons that innervate the glomeruli of the antennal lobe with varicose processes. Recently, DTK was shown to mediate presynaptic inhibition of olfactory sensory neurons by physiological and behavioral analysis. 1 That study drew our attention to the issue of alternative targets of DTK in the antennal lobe. Hence, in the present study, we interfered with DTK peptide and DTK receptor (DTKR) expression in local interneurons of the antennal lobe and studied the behavioral outcome of these manipulations. We show that DTKR is expressed not only in olfactory sensory neurons, but likely also in local interneurons. The behavioral consequences of interfering with postsynaptic peptide receptors are different from presynaptic peptide receptor interference. We discuss the possibility that the sum of pre- and post-synaptic interactions may be to modulate the dynamic range in odor sensitivity.
Nyckelord
olfaction; antennal lobe; local interneuron; neuropeptide; tachykinin; peptide receptor
Publicerad i
Fly
2010, volym: 4, nummer: 2, sidor: 167-171
Utgivare: LANDES BIOSCIENCE
SLU författare
UKÄ forskningsämne
Biokemi
Molekylärbiologi
Zoologi
Publikationens identifierare
- DOI: https://doi.org/10.4161/fly.4.2.11467
Permanent länk till denna sida (URI)
https://res.slu.se/id/publ/59990