Spatial organization of the glucosinolate-myrosinase system in brassica specialist aphids is similar to that of the host plant
| Autor: | Matthew Bridges, Rosemary A. Cole, E. Bartlet, Roger M. Wallsgrove, Alexandra M. E. Jones, Vassiliki K. Karapapa, Nigel Watts, John T. Rossiter, Chris J. Hodgson, Atle M. Bones |
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| Jazyk: | angličtina |
| Rok vydání: | 2002 |
| Předmět: |
Glycoside Hydrolases
media_common.quotation_subject Glucosinolates Brassica Insect General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound Botany Animals General Environmental Science media_common Lipaphis erysimi Aphid General Immunology and Microbiology biology Myrosinase fungi food and beverages General Medicine biology.organism_classification Horticulture chemistry Brevicoryne brassicae Glucosinolate Aphids Isothiocyanate General Agricultural and Biological Sciences Research Article |
| Popis: | Secondary metabolites are important in plant defence against pests and diseases. Similarly, insects can use plant secondary metabolites in defence and, in some cases, synthesize their own products. The paper describes how two specialist brassica feeders, Brevicoryne brassicae (cabbage aphid) and Lipaphis erysimi (turnip aphid) can sequester glucosinolates (thioglucosides) from their host plants, yet avoid the generation of toxic degradation products by compartmentalizing myrosinase (thioglucosidase) into crystalline microbodies. We propose that death, or damage, to the insect by predators or disease causes disruption of compartmentalized myrosinase, which results in the release of isothiocyanate that acts as a synergist for the alarm pheromone E-beta-farnesene. |
| Databáze: | OpenAIRE |
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