Isolation and structural identification of a germination inhibitor in fire-recruiters from the California chaparral

Louise M. Egerton-Warburton*, Emilio L. Ghisalberti

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

9 Scopus citations

Abstract

A role for inhibitors as regulators of seed dormancy in fire-dependent annuals and their nondormant (fire-independent) congeners was examined in the family Hydrophyllaceae. From seeds of the fire-dependent species, Emmenanthe penduliflora, Phacelia minor, P. brachyloba, and P. grandiflora, extracts were obtained that were found to be largely self-inhibitory and potent inhibitors of seed germination in nondormant congeners. Lower activity was detected in the fire-independent species, P. tanacetifolia and P. campanularia. The inhibitory activity was associated with the new sucrose ester, 6-O-linoleyl-α-D-glucopyranosyl-β-D-fructofuranoside.

Original languageEnglish (US)
Pages (from-to)371-382
Number of pages12
JournalJournal of Chemical Ecology
Volume27
Issue number2
DOIs
StatePublished - 2001

Keywords

  • Chaparral
  • Emmenanthe penduliflora
  • Fire
  • Germination inhibition
  • Hydrophyl-laceae
  • Phacelia brachyloba
  • Phacelia campanularia
  • Phacelia grandiflora
  • Phacelia minor
  • Phacelia tanacetifolia
  • Sucrose esters

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Biochemistry

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