ISSN:
1573-1561
Keywords:
Castanospermum australe
;
Moreton Bay chestnut
;
Senecio vulgaris
;
groundsel
;
Pseudococcus longispinus
;
mealybug
;
aphid
;
Schizaphis graminum
;
greenbug
;
Myzus persicae
;
green peach aphid
;
Aphis nerii
;
oleander aphid
;
Homoptera
;
Aphididae
;
Coccidae
;
phloem transport
;
honeydew
;
indolizidine
;
pyrrolizidine alkaloid
;
gramine
;
DIMBOA
;
cardenolide
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
,
Chemistry and Pharmacology
Notes:
Abstract Analysis of honeydew excreted by various sap-sucking insects indicated the presence of certain plant secondary constituents in the phloem of their host plants. Honeydew excreted by mealybugs (Pseudococcus longispinus), living onCastanospermum australe, contained the indolizidine alkaloid castanospermine, a potent β-glucosidase inhibitor. Similarly, honeydew from green peach aphids (Myzus persicae), feeding onSenecio vulgaris flower buds, contained the pyrrolizidine alkaloid senecionine, itsN-oxide, and hydrolytic products including retronecine. Cardenolides were detected in the honeydew of oleander aphids (Aphis nerii) feeding on oleander (Nerium oleander), indicating that these compounds are translocated in the phloem. On the other hand, honeydew from greenbugs (Schizaphis graminum), feeding on barley, lacked gramine or related indole metabolites. Similarly MBOA, the breakdown product of DIMBOA, was not detected in the honeydew of greenbugs living on DIMBOA-containing wheat.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01020503
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