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Tronchuda cabbage flavonoids uptake by Pieris brassicae.

Federico Ferreres1, Carla Sousa, Patrícia Valentão

  • 1Research Group on Quality, Safety and Bioactivity of Plant Foods, Department of Food Science and Technology, CEBAS (CSIC), P.O. Box 164, 30100 Campus University, Espinardo, Murcia, Spain.

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Summary
This summary is machine-generated.

Cabbage white butterfly larvae selectively accumulate quercetin derivatives from tronchuda cabbage. These larvae also metabolize dietary flavonoids, indicating complex biochemical adaptations.

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Area of Science:

  • Agricultural Science
  • Biochemistry
  • Entomology

Background:

  • Flavonoids are plant secondary metabolites with diverse biological activities.
  • Insects often sequester or metabolize plant compounds for defense or nutrition.
  • The cabbage white butterfly (Pieris brassicae) is a significant agricultural pest.

Purpose of the Study:

  • To analyze the flavonoid profile of Pieris brassicae larvae.
  • To compare larval flavonoids with those present in their host plant, tronchuda cabbage.
  • To investigate selective sequestration and metabolism of flavonoids by the larvae.

Main Methods:

  • Larvae of Pieris brassicae were reared on tronchuda cabbage leaves.
  • High-performance liquid chromatography with diode-array detection and tandem mass spectrometry (HPLC-DAD-MS/MS-ESI) was used for flavonoid analysis.
  • Identification and quantification of individual flavonoid compounds.

Main Results:

  • Twenty flavonoids were identified, primarily kaempferol and quercetin derivatives.
  • Kaempferol 3-O-sophoroside, a minor cabbage component, was the main flavonoid in larvae.
  • Larvae contained high levels of quercetin derivatives not abundant in the host plant, suggesting selective sequestration.
  • The presence of undetectable flavonoids in the host plant indicates larval metabolism.

Conclusions:

  • Pieris brassicae larvae selectively sequester specific flavonoids, particularly quercetin derivatives.
  • Larval metabolism of dietary flavonoids is evident, suggesting biochemical adaptation.
  • Understanding these interactions can inform pest management strategies.