Natural Substrates | Organism | Comment (Nat. Sub.) | Natural Products | Comment (Nat. Pro.) | Rev. | Reac. |
---|---|---|---|---|---|---|
a thioglucoside + H2O | Psylliodes chrysocephala | - |
a sugar + a thiol | - |
? | |
additional information | Psylliodes chrysocephala | leaves of four-week old Brassica rapa plants that have been damaged by Psylliodes chrysocephala adults for one week are analyzed for their glucosinolates profiles, overview | ? | - |
? |
Organism | UniProt | Comment | Textmining |
---|---|---|---|
Psylliodes chrysocephala | - |
- |
- |
Substrates | Comment Substrates | Organism | Products | Comment (Products) | Rev. | Reac. |
---|---|---|---|---|---|---|
4-hydroxybenzyl glucosinolate + H2O | - |
Psylliodes chrysocephala | 4-hydroxybenzyl isothiocyanate + D-glucose | - |
? | |
4-methylsulfinylbutyl glucosinolate + H2O | isolated from seeds of Sinapis alba | Psylliodes chrysocephala | 4-methylsulfinylbutyl isothiocyanate + D-glucose | - |
? | |
a thioglucoside + H2O | - |
Psylliodes chrysocephala | a sugar + a thiol | - |
? | |
additional information | leaves of four-week old Brassica rapa plants that have been damaged by Psylliodes chrysocephala adults for one week are analyzed for their glucosinolates profiles, overview | Psylliodes chrysocephala | ? | - |
? |
Synonyms | Comment | Organism |
---|---|---|
beta-thioglucosidase | - |
Psylliodes chrysocephala |
myrosinase | - |
Psylliodes chrysocephala |
General Information | Comment | Organism |
---|---|---|
physiological function | the cabbage stem flea beetle (Psylliodes chrysocephala) is a key pest of oilseed rape in Europe, and is specialized to feed on Brassicaceae plants armed with the glucosinolate-myrosinase defense system, e.g. Brassica rapa, Sinapis alba, or Arabidopsis thaliana. Upon tissue damage, the beta-thioglucosidase enzyme myrosinase hydrolyzes glucosinolates (GLS) to form toxic isothiocyanates (ITCs) which deter non-adapted herbivores. Feeding damage usually causes rapid enzymatic breakdown of GLS to toxic ITCs in the insect gut. Metabolites derived from 4-methylsulfinylbutyl isothiocyanate in feces of Psylloides chrysocephala, feces extracts of beetles that have fed on detached leaves of different Arabidopsis thaliana genotypes, overview. Psylloides chrysocephala partially detoxifies ITCs by conjugation with glutathione via the conserved mercapturic acid pathway, and can largely prevent GLS hydrolysis in ingested plant tissue by sequestration and desulfation. Psylloides chrysocephala selectively sequester GLS from their host plants and store these throughout their life cycle. In addition, Psylloides chrysocephala metabolizes GLS to desulfo-GLS, which implies the evolution of GLS sulfatase activity in this specialist | Psylliodes chrysocephala |