|
Titre :
|
Honeydew sugars and osmoregulation in the pea aphid Acyrthosiphon pisum
|
|
Auteurs :
|
T. Wilkinson ;
D. Ashford ;
J. Pritchard ;
A. Douglas
|
|
Type de document :
|
article/chapitre/communication
|
|
Année de publication :
|
1997
|
|
Format :
|
2137-2143
|
|
Langues:
|
= Anglais
|
|
Mots-clés:
|
Acyrthosiphon pisum
;
aphid
;
osmoregulation
;
sucrose
;
transglycosylation
;
oligosaccharide
;
Miellat
;
Symbionte
;
Composition biochimique
;
Alimentation artificielle
;
Osmoregulation
;
Vicia faba
;
Leguminosae
;
Aphididae
|
|
Résumé :
|
Pea aphids, Acyrthosiphon pisum, containing their symbiotic bacteria (untreated aphids) and experimentally deprived of their bacteria by treatment with the antibiotic rifampicin (antibiotic-treated aphids) were reared on the plant Vicia faba, The sugars in the honeydew produced by untreated aphids comprised predominantly the monosaccharides glucose and fructose, while the honeydew of antibiotic-treated aphids contained considerable amounts of oligosaccharides of up to 16 hexose units, The honeydew and haemolymph of the aphids were iso-osmotic, and their osmotic pressure was significantly lower in untreated aphids (0.91-0.95 MPa) than in antibiotic-treated aphids (1.01-1.05 MPa) (P
|
|
Source :
|
Journal of Experimental Biology - 0022-0949, vol. 200, n° 15
|
