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Drosophila odorant receptors are both ligand-gated and cyclic-nucleotide-activated cation channels
It is shown that application of odorants to mammalian cells co-expressing Or22a and Or83b results in non-selective cation currents activated by means of an ionotropic and a metabotropic pathway, and a subsequent increase in the intracellular Ca2+ concentration.
A Conserved Dedicated Olfactory Circuit for Detecting Harmful Microbes in Drosophila
Olfactory Shifts Parallel Superspecialism for Toxic Fruit in Drosophila melanogaster Sibling, D. sechellia
Evolution of insect olfactory receptors
The olfactory system of the primary wingless bristletail Lepismachilis y-signata, the firebrat Thermobia domestica and the neopteran leaf insect Phyllium siccifolium is investigated, suggesting that ORs arose as an adaptation to a terrestrial lifestyle, but evolved later in insect evolution, with Orco being present before the appearance of ORs.
Evolution of Insect Olfaction
The draft genome of whitefly Bemisia tabaci MEAM1, a global crop pest, provides novel insights into virus transmission, host adaptation, and insecticide resistance
The B. tabaci genome contains numerous genetic novelties, including expansions in gene families associated with insecticide resistance, detoxification and virus transmission, as well as numerous horizontally transferred genes from bacteria and fungi.
Novel natural ligands for Drosophila olfactory receptor neurones
- M. Stensmyr, E. Giordano, A. Balloi, A. Angioy, B. Hansson
- BiologyJournal of Experimental Biology
- 15 February 2003
The GC—SC recordings revealed that the olfactory receptor neurones investigated were often selective and could be divided into distinct functional types with discrete characteristics, and dose—response investigations revealed very low response thresholds to the tested compounds.
Pollination by brood-site deception.
Pollination: Rotting smell of dead-horse arum florets
It is confirmed that the composition of volatiles from these flowers and from a rotting carcass is strikingly similar and it is shown that the pollinators respond in the same way to chemicals from both sources.
Evolution of the olfactory code in the Drosophila melanogaster subgroup
- M. Stensmyr, T. Dekker, B. Hansson
- BiologyProceedings of the Royal Society of London…
- 22 November 2003
It is shown that the olfactory code as relayed by the investigated subset of ORNs is conserved to a striking degree and may represent a novel host–specific adaptation to its sole host, morinda fruit (Morinda citrifolia).