Abstract:
:Indole alkaloid contents were investigated in leaves of Tabernaemontana pachysiphon (Apocynaceae) trees in the natural habitat, Shimba Hills National Reserve, Kenya. The contents of the major alkaloids apparicine, tubotaiwine, tubotaiwine- N-oxide, and isovoacangine varied with site, leaf age, leaf growth form, position in the crown, and plant age. Alkaloid contents were highest in young leaves. Trees bearing aberrant small dwarf-leaves showed similar alkaloid patterns as young leaves from healthy trees. At single trees, the contents were found to increase from the top to the bottom of the crown. Tree age had little influence on leaf alkaloid contents. In even aged leaves of trees from different forest sites, alkaloid contents were highest at the site with highest soil cation exchange capacity (CEC) and base saturation.
journal_name
Planta Medjournal_title
Planta medicaauthors
Höft M,Verpoorte R,Beck Edoi
10.1055/s-2006-957393subject
Has Abstractpub_date
1998-03-01 00:00:00pages
148-52issue
2eissn
0032-0943issn
1439-0221journal_volume
64pub_type
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