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NOVEL FLAVONOIDS AND RETICULATE EVOLUTION IN THE PHLOX PILOSA–P. DRUMMONDII COMPLEX
Author(s) -
Levy Morris,
Levin Donald A.
Publication year - 1974
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.1002/j.1537-2197.1974.tb06041.x
Subject(s) - biology , ploidy , botany , reticulate , apigenin , flavonoid , biochemistry , gene , antioxidant
The nonanthocyanin flavonoids of the diploids Phlox pilosa ssp. pilosa and P. drummondii ssp. mcallisteri and their putative allotetraploid derivatives P. aspera and P. villosissima were characterized by chromatographic and spectrophotometric analyses. Synthetic F 1 diploid hybrids were also examined. All but one of the compounds encountered were glycoflavone (C‐glycosyl) derivatives of either apigenin or luteolin. Although some compounds were present in all four taxa, most were species‐specific. Together, the diploids exhibited 15 different flavonoids. Half of each tetraploid ensemble was composed of novel flavonoids, compounds not manifest in either diploid ancestor. In total, the tetraploids produced seven different novel flavonoids. Five novel compounds differed from particular diploid compounds only in number or kind of oxygen‐linked sugar substituents. Ostensibly, these five are either identical to diploid biosynthetic intermediates or share common precursors with related diploid end products. The mode of origin of all novel compounds is discussed.