Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Gustatory organs of Drosophila melanogaster: fine structure and expressionof the putative odorant-binding protein PBPRP2
Autore:
Shanbhag, SR; Park, SK; Pikielny, CW; Steinbrecht, RA;
Indirizzi:
UMDNJ, Robert Wood Johnson Med Sch, Dept Neurosci & Cell Biol, Piscataway,NJ 08854 USA UMDNJ Piscataway NJ USA 08854 urosci & Cell Biol, Piscataway,NJ 08854 USA Max Planck Inst Verhaltensphysiol, D-82319 Seewiesen, Germany Max Planck Inst Verhaltensphysiol Seewiesen Germany D-82319 sen, Germany
Titolo Testata:
CELL AND TISSUE RESEARCH
fascicolo: 3, volume: 304, anno: 2001,
pagine: 423 - 437
SICI:
0302-766X(200106)304:3<423:GOODMF>2.0.ZU;2-B
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHEROMONE-BINDING; OLFACTORY SENSILLA; TASTE RECEPTOR; GENE; LOCALIZATION; TRANSDUCTION; PROJECTIONS; NEURONS; CHEMORECEPTORS; ORGANIZATION;
Keywords:
insect sensilla; ultrastructure; cryofixation; immunocytochemistry; taste perception; Drosophila melanogaster; insecta;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
68
Recensione:
Indirizzi per estratti:
Indirizzo: Shanbhag, SR Tata Inst Fundamental Res, Dept Biol Sci, Mumbai 400005, India Tata Inst Fundamental Res Mumbai India 400005 400005, India
Citazione:
S.R. Shanbhag et al., "Gustatory organs of Drosophila melanogaster: fine structure and expressionof the putative odorant-binding protein PBPRP2", CELL TIS RE, 304(3), 2001, pp. 423-437

Abstract

In Drosophila, as in most insects, gustation is mediated by sensory hairs located on the external and internal parts of the proboscis and on the legsand wings. We describe in detail the organization and ultrastructure of the gustatory sensilla on the labellum and legs and the distribution of PBPRP2, a putative odorant-binding protein, in the gustatory organs of Drosophila. The labellum carries two kinds of sensilla: taste bristles and taste pegs. The former have the typical morphology of gustatory sensilla and can be further subdivided into three morphological subtypes, each with a stereotyped distribution and innervation. Taste pegs have a unique morphology and are innervated by two receptor cells: one mechanoreceptor and the other a putative chemoreceptor cell. PBPRP2 is abundantly expressed in all adult gustatory organs on labellum, legs, and wings and in the internal taste organs on the proboscis. In contrast to olfactory organs, where PBPRP2 is expressedin the epidermis, this protein is absent from the epidermis of labial palps and legs. In the taste bristles of the labellum and legs, PBPRP2 is localized in the crescent-shaped lumen of the sensilla, and not in the lumen where the dendrites of the gustatory neurons are found, making a function in stimulus transport unlikely in these sensilla. In contrast, PBPRP2 in peg sensilla is expressed in the inner sensillum-lymph cavity and is in contact with the dendrites. Thus, PBPRP2 could be involved as a carrier for hydrophobic ligands, e.g., bitter tastants, in these sensilla.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 28/11/20 alle ore 04:08:38