title: Taxonomic significance of flavonoid variation in temperate species of Nothofagus.
abstract: Forty-two flavonoids and a stilbene (pinosylvin) were identified in the leaf exudates of 11 temperate species of Nothofagus from South America, Australia and New Zealand. The flavonoid profiles demonstrate significant taxonomic value at the subgeneric level. Most species of subgenus Fuscospora are characterized by the presence of pinosylvin, galangin and galangin methyl ethers. Kaempferol-type flavonols are abundant in subgenus Lophozonia while these flavonols are largely absent from species of subgenus Fuscospora. The flavonoid patterns are largely in agreement with a recent subgeneric classification of Nothofagus.
authors.affiliation: Institut für Botanik der Technischen Universität, Schnittspahnstrasse 3, D-64287 Darmstadt, Germany. wollenweber@bio.tu-darmstadt.de
authors.forename: Eckhard
authors.initials: E
authors.lastname: Wollenweber
authors.forename: Jan F
authors.initials: JF
authors.lastname: Stevens
authors.forename: Marion
authors.initials: M
authors.lastname: Dörr
authors.forename: Andrew C
authors.initials: AC
authors.lastname: Rozefelds
mesh_terms: D016000:Cluster Analysis; D005419:Flavonoids / Q000032:analysis / Q000737:chemistry* / Q000145:classification*; D019684:Magnoliopsida / Q000737:chemistry* / Q000145:classification* / Q000378:metabolism; D010802:Phylogeny; D018515:Plant Leaves / Q000737:chemistry; D013045:Species Specificity; D013267:Stilbenes / Q000032:analysis; D000094162:Phytoalexins
chemical_list: D005419:Flavonoids; D013267:Stilbenes; C037032:galangin; C049032:pinosylvin; D000094162:Phytoalexins