The accumulation of essential oils in Angelica archangelica subsp. archangelica roots at different developmental stages was investigated through histochemical and chemical analyses. Roots less than 1 mm in diameter showed a primary diarch structure and two primary secretory ducts in the pericycle. These ducts were ephemeral and probably became dysfunctional early on. Oil accumulation was observed only in the secondary secretory ducts formed by cambium activity and located in the secondary phloem. Gas chromatographic analyses revealed that only taproots exceeding 5 mm in diameter contained a high concentration of alpha- and beta- phellandrene, which appreciably influence the oil's aroma.
Silvestrini, A., Pasqua, G., Monacelli, B., Manganaro, R., In vitro root differentiation and essential-oil accumulation in angelica archangelica, <<IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY. PLANT>>, 2001; (37): 763-766. [doi:10.1007/s11627-001-0126-7] [http://hdl.handle.net/10807/5427]
In vitro root differentiation and essential-oil accumulation in angelica archangelica
Silvestrini, Andrea;
2001
Abstract
The accumulation of essential oils in Angelica archangelica subsp. archangelica roots at different developmental stages was investigated through histochemical and chemical analyses. Roots less than 1 mm in diameter showed a primary diarch structure and two primary secretory ducts in the pericycle. These ducts were ephemeral and probably became dysfunctional early on. Oil accumulation was observed only in the secondary secretory ducts formed by cambium activity and located in the secondary phloem. Gas chromatographic analyses revealed that only taproots exceeding 5 mm in diameter contained a high concentration of alpha- and beta- phellandrene, which appreciably influence the oil's aroma.
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