Phenolic compounds of the inner bark of Betula pendula: seasonal and genetic variation and induction by wounding.
The contents of individual phenolic compounds in the inner bark of silver birch (Betula pendula Roth) were analyzed by HPLC-DAD. Samples from 21 mature trees originating from three micropropagated parent trees were collected six times over a 1-year period. Significant seasonal variation in the quantities of ten compounds and four chromatographically unresolved compound pairs was found. A majority of the compounds also exhibited significant quantitative variation among birch clones. There were no qualitative differences associated with the season or among the clones. However, wounding of the bark induced the production of new types of bark phenolics: several ellagitannins were detected in the callus tissues of birch for the first time.
Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014 Turku, Finland. jaana.liimatainen@utu.fi
Jaana
J
Liimatainen
Maarit
M
Karonen
Jari
J
Sinkkonen
Marjo
M
Helander
Juha-Pekka
JP
Salminen
D029662:Betula / Q000737:chemistry* / Q000235:genetics; D002851:Chromatography, High Pressure Liquid; D014644:Genetic Variation; D047348:Hydrolyzable Tannins / Q000737:chemistry; D010636:Phenols / Q000032:analysis / Q000737:chemistry*; D024301:Plant Bark / Q000737:chemistry / Q000235:genetics; D012621:Seasons
D047348:Hydrolyzable Tannins; D010636:Phenols; C013515:ellagitannin