SOIL CHARACTERISTICS, MINERAL NUTRIENTS, BIOMASS, AND CARDENOLIDE PRODUCTION IN DIGITALIS OBSCURA WILD POPULATIONS

Mature leaves of wild-growing Digitalis obscura plants and soil samples were collected in four different regions. Soil and leaf mineral nutrient contents as well as biomass and cardenolide productions were determined. The soils in the four collection sites, basic and highly calcareous, showed signif...

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Bibliographic Details
Published in:Journal of plant nutrition 2002-09, Vol.25 (9), p.2015-2026
Main Authors: Roca-Pérez, Luis, Pérez-Bermüdez, Pedro, Boluda, Rafael
Format: Article
Language:English
Subjects:
Animal and plant ecology
Animal, plant and microbial ecology
Autoecology
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
General pharmacology
Medical sciences
Pharmacognosy. Homeopathy. Health food
Pharmacology. Drug treatments
Plants and fungi
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Summary:Mature leaves of wild-growing Digitalis obscura plants and soil samples were collected in four different regions. Soil and leaf mineral nutrient contents as well as biomass and cardenolide productions were determined. The soils in the four collection sites, basic and highly calcareous, showed significant interpopulation differences in phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), manganese (Mn), copper (Cu), and zinc (Zn). Foliar mineral nutrients and cardenolides also varied among populations. Highest cardenolide yield was found in those Digitalis populations presenting a better development. The cardenolide content exhibited significant negative correlations with the levels of P in plants and those of Cu in soils, suggesting that these elements may affect cardenolide biosynthesis.
ISSN:0190-4167
1532-4087
DOI:10.1081/PLN-120013291