Odor and pheromone detection in Drosophila melanogaster

Smith, Dean P.

doi:10.1007/s00424-006-0190-2

Cited by 48 publications

(37 citation statements)

References 67 publications

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“…Ch is usually associated to the detection of chemosensory stimuli as well as the selection of the courtship microenvironment. B, in turn, has been shown to be mainly used in the identification of ordinary odor molecules (Benton, 2007;Smith, 2007). It is generally assumed that au is a type of physical receptor that mediates the detection of sound waves (Chen and Kang, 1998;Dyer and Seabrook, 1978;Ma and Du, 2000;Shao et al, 2002).…”

Section: Conclusion and Discussionmentioning

confidence: 98%

Scanning electron microscopy of antennal sensible of Anoplistes halodendri halodendri and Anoplistes halodendri ephippium (Coleoptera: Cerambycidae)

Liu

Luo

Cao³

et al. 2011

Microscopy Res & Technique

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Anoplistes halodendri halodendri (Pallas, 1776) and Anoplistes halodendri ephippium (Stevens and Dalman, 1817) are two subspecies of the longicorn beetle A. halodendri (Coleoptera, Cerambycidae). In the recent years, these subspecies have been spreading rapidly in Hippophae rhamnoides and Hedysarum scoparium shrubberies in the Chinese provinces of Shanxi and Kingie, causing mass mortality of these shrubberies species and consequently leading to great damage to local ecological environment construction as well as high economic, ecological, and societal losses. To control their hazards effectively, here, we study and compare the types, densities, and distribution of antennal sensilla of A. h. halodendri and A. h. ephippium using scanning electron microscopy. Eight sensilla types were observed on the antennae of these two subspecies, including placoid sensilla (Ps), chaetica sensilla (ch) (types I-III), sensilla basiconica (b) (types I and II), sensilla gemmiformium (G), and auricillica sensilla (au). Ps predominated on the antennae of both A. h. halodendri and A. h. ephippium, followed by b and ch, and G and au. There were differences between the subspecies in the distribution and density of the different sensilla types, with ch I being found exclusively on the antennae of A. h. ephippium and b I and au on the antennae of A. h. halodendri only. With the exception of Ps, the densities of ch II, ch III, b II, and G on the antennae of A. h. halodendri were much higher than on the antennae of A. h. ephippium. These results provide sufficient evidence to clarify the receptive mechanisms used by these two subspecies of longicorn beetles and their responses to volatile semiochemicals released by their host plants as well as discuss their differences with respect to host and habitat selection.

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Section: Conclusion and Discussionmentioning

confidence: 98%

Scanning electron microscopy of antennal sensible of Anoplistes halodendri halodendri and Anoplistes halodendri ephippium (Coleoptera: Cerambycidae)

Liu

Luo

Cao³

et al. 2011

Microscopy Res & Technique

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“…The hair-like sensilla that house the olfactory receptor neurons (ORNs) are located on the main olfactory organ, the antenna, and the maxillary palp [4, 5]. Consistent with the detection of citronellal through the sense of smell, animals with ablated antenna and maxillary palps, or antennal only, showed dramatic decreases in avoidance (Figure 1D).…”

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confidence: 88%

Drosophila TRPA1 Channel Is Required to Avoid the Naturally Occurring Insect Repellent Citronellal

et al. 2010

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Summary Plants produce naturally occurring insect repellents, such as citronellal, which is the main component of citronellal oil and is among the most widely-used-naturally-occurring insect repellents. However, the molecular pathways through which insects sense botanical repellents are unknown. Here, we showed that Drosophila used two pathways for direct avoidance of citronellal. The olfactory co-receptor, Or83b, which is required for the response to the synthetic repellent DEET, contributed to citronellal repulsion, and was essential for citronellal-evoked action potentials. Mutations affecting the Ca2+-permeable cation channel, TRPA1 resulted in a comparable defect in avoiding citronellal vapor. The TRPA1-dependent aversion to citronellal relied on a G protein/phospholipase C (PLC) signaling cascade, rather than direct detection of citronellal by TRPA1. Loss of TRPA1, Gq or PLC caused an increase in the frequency of citronellal-evoked action potentials in olfactory receptor neurons. Absence of the Ca2+-activated K+ channel, Slowpoke, resulted in a similar impairment in citronellal avoidance, and an increase in the frequency of action potentials. These results suggest that TRPA1 is required for activation of a BK channel to modulate citronellal-evoked action potentials, and for aversion to citronellal. In contrast to Drosophila TRPA1, Anopheles gambiae TRPA1 was directly and potently activated by citronellal, thereby raising the possibility that mosquito TRPA1 may be a target for developing improved repellents to reduce insect-borne diseases such as malaria.

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“…[11][12][13]. Figure 1A shows a scanning electron micrograph of a fly, with the maxillary palps and antenna highlighted.…”

Section: Anatomy Of Drosophila Olfactionmentioning

confidence: 98%

Diverse signaling mechanisms mediate volatile odorant detection in Drosophila

Ronderos¹,

Smith²

2009

Fly

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Insects have extraordinary sensitivity to volatile odorants. In the case of pheromone reception, sensitivity approaches the single molecule detection limit. The mystery of how insects detect volatile odorants has intrigued researchers for more than a century, but only recently have the molecular underpinnings been uncovered. In this review we summarize recent work that reveals multiple signaling mechanisms utilizing several distinct receptor families underlie olfaction in Drosophila. Some of these mechanisms have not been observed in other animals, suggesting they evolved relatively late along an evolutionary branch that ultimately gave rise to the insects.

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Odor and pheromone detection in Drosophila melanogaster

Cited by 48 publications

References 67 publications

Scanning electron microscopy of antennal sensible of Anoplistes halodendri halodendri and Anoplistes halodendri ephippium (Coleoptera: Cerambycidae)

Scanning electron microscopy of antennal sensible of Anoplistes halodendri halodendri and Anoplistes halodendri ephippium (Coleoptera: Cerambycidae)

Drosophila TRPA1 Channel Is Required to Avoid the Naturally Occurring Insect Repellent Citronellal

Diverse signaling mechanisms mediate volatile odorant detection in Drosophila

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