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Titolo:
Physiological status and change of cytoplasmic lipid droplets in the pheromone-producing cells of the silkmoth, Bombyx mori (Lepidoptera, Bombycidae)
Autore:
Fonagy, A; Yokoyama, N; Matsumoto, S;
Indirizzi:
RIKEN, Inst Phys & Chem Res, Lab Mol Entomol & Baculovirol, Wako, Saitama 3510198, Japan RIKEN Wako Saitama Japan 3510198 aculovirol, Wako, Saitama 3510198, Japan Hungarian Acad Sci, Inst Plant Protect, Dept Zool, H-1525 Budapest, Hungary Hungarian Acad Sci Budapest Hungary H-1525 ool, H-1525 Budapest, Hungary Univ Tokyo, Grad Sch Agr & Life Sci, Dept Agr & Environm Biol, Tokyo 1138657, Japan Univ Tokyo Tokyo Japan 1138657 Agr & Environm Biol, Tokyo 1138657, Japan
Titolo Testata:
ARTHROPOD STRUCTURE & DEVELOPMENT
fascicolo: 2, volume: 30, anno: 2001,
pagine: 113 - 123
SICI:
1467-8039(200111)30:2<113:PSACOC>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
BIOSYNTHESIS-ACTIVATING NEUROPEPTIDE; SEX-PHEROMONE; SILKWORM MOTH; SIGNAL-TRANSDUCTION; INVOLVEMENT; HORMONE; GLAND; PBAN; IDENTIFICATION; CALMODULIN;
Keywords:
Bombyx mori; pheromone gland (PG); lipid droplets; bombykol precursor; PBAN;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
34
Recensione:
Indirizzi per estratti:
Indirizzo: Fonagy, A RIKEN, Inst Phys & Chem Res, Lab Mol Entomol & Baculovirol, Hirosawa 2-1, Wako, Saitama 3510198, Japan RIKEN Hirosawa 2-1 Wako Saitama Japan 3510198 ama 3510198, Japan
Citazione:
A. Fonagy et al., "Physiological status and change of cytoplasmic lipid droplets in the pheromone-producing cells of the silkmoth, Bombyx mori (Lepidoptera, Bombycidae)", ARTHROP STR, 30(2), 2001, pp. 113-123

Abstract

Changes in size and number of cytoplasmic lipid droplets were quantified in the pheromone gland (PG) of Bombyx mori before and after adult eclosion. Two days before eclosion, size and number of droplets are small (diameter is 2-7 mum) and few. The formation and significant proliferation of larger droplets (5-12 mum) take place between 2 days and I day before eclosion. From the day of emergence until day 3 a fluctuation in size and number of lipid droplets during the photophase (4 h intervals) is observed. The changes are more characteristic and dramatic on the day of emergence and first day, while attenuation of these changes can be observed from the second day and seems to disappear by day 4. Bombykol content, at each respective time, is in good correlation with the observed fluctuation in lipid droplet parameters. Highest bombykol production daily is observed towards the early evening, when lipid droplets are the smallest (2-4 mum) and most numerous. By day 4, however, this regularity also ceases. In 24 It old mated females PG cellstructure is quite similar to newly emerged ones. In glands of 72 h old decapitated females the formation of 'extra' large lipid droplets is remarkable. In vivo pheromone biosynthesis activating neuropeptide (PBAN) treatment, however, induced the formation of many small droplets, although numerous larger ones also remained. The morphological changes in lipid droplets and cellular dynamics associated with the external signal of PBAN in the PG suggest a storage-pool function of the lipid droplets. (C) 2001 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 06/04/20 alle ore 05:47:03