Lipid, polyamide, and flavonol phagostimulants for adult western corn rootworm from sunflower (Helianthus annuus L.) pollen

Sisi Lin, Christopher A. Mullin

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Adult Diabroticites including western corn rootworm (WCR), Diabrotica virgifera virgifera LeConte, consume pollen of corn, squash, sunflower, and other species. Short-chain neutral amino acids in methanol-water extracts of pollen have been previously identified in our laboratory as strong phagostimulants for Diabrotica. Bioassay-driven fractionation was used to characterize the interacting lipid and midpolarity phagostimulants for adult WCR in Giant Gray Stripe sunflower, Helianthus annuus L., pollen. Lipids rich in ω3-linolenic acid including triglycerides, free fatty acids, phosphatidylethanolamines, phosphatidic acids, and phosphatidylcholines were highly phagostimulatory. Other important phagostimulatory components included a hydroxycinnamic acid-polyamine amide, N',N5,N10-tri[(E)-p- coumaroyl]spermidine, and a flavonol, quercetin β-3-O-glucoside. The structural characteristics of these phagoactive compounds and their role in the pollinivory specialization of rootworm beetles are discussed.

Original languageEnglish (US)
Pages (from-to)1223-1229
Number of pages7
JournalJournal of agricultural and food chemistry
Volume47
Issue number3
DOIs
StatePublished - Mar 1999

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Agricultural and Biological Sciences

Fingerprint

Dive into the research topics of 'Lipid, polyamide, and flavonol phagostimulants for adult western corn rootworm from sunflower (Helianthus annuus L.) pollen'. Together they form a unique fingerprint.

Cite this