NDLI: Qualitative Variation in Proanthocyanidin Composition of Populus Species and Hybrids: Genetics is the Key

Content Provider	Springer Nature Link
Author	Scioneaux, Ashley N. Schmidt, Michael A. Moore, Melissa A. Lindroth, Richard L. Wooley, Stuart C. Hagerman, Ann E.
Copyright Year	2010
Abstract	The literature on proanthocyanidins (tannins) in ecological systems is dominated by quantitative studies. Despite evidence that the qualitative characteristics (subunit type, polymer chain length) of these complex polyphenolics are important determinants of biological activity, little is known about genetic and environmental controls on the type of proanthocyanidins produced by plants. We tested the hypothesis that genetics, season, developmental stage, and environment determine proanthocyanidin qualitative characteristics by using four Populus “cross types” (narrowleaf [P. angustifolia], Fremont [P. fremontii], F1 hybrids, and backcrosses to narrowleaf). We used thiolysis and HPLC analysis to characterize the proanthocyanidins, and found that genetics strongly control composition. The narrowleaf plants accumulate mixed procyanidin/prodelphinidins with average composition epicatechin$_{11}$-epigallocatechin$_{8}$-catechin$_{2}$-catechin$_{(terminal)}$. Backcross genotypes produce mixed procyanidin/prodelphinidins similar to narrowleaf, while Fremont makes procyanidin dimers, and the F1 plants contain procyanidin heptamers. Less striking effects were noted for genotype × environment, while season and developmental zone had little effect on proanthocyanidin composition or chain length. We discuss the metabolic and ecological consequences of differences in condensed tannin qualitative traits.
Starting Page	57
Ending Page	70
Page Count	14
File Format	PDF
ISSN	00980331
Journal	Journal of Chemical Ecology
Volume Number	37
Issue Number	1
e-ISSN	15731561
Language	English
Publisher	Springer-Verlag
Publisher Date	2010-11-30
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Populus Condensed tannin Genetic variation Polyphenolic Proanthocyanidin Tannin composition Thiolysis Agriculture Biological Microscopy Entomology Biochemistry Ecology
Content Type	Text
Resource Type	Article
Subject	Medicine Biochemistry Ecology, Evolution, Behavior and Systematics

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